vacuumabacus, ablaut, acarus, accrue, acetum, acinus, adieus, adieux, adnoun, adytum, aecium, aeneus, afflux, aidful, aimful, airbus, alarum, allium, amylum, animus, antrum, arbour, ardour, armful, armour, artful, asarum, asylum, atrium, aureus, aurous, auteur, avenue, awmous, backup, bagful, barbut, barium, barque, basque, battue, bayous, bedaub, bedbug, bedrug, befoul, belaud, besmut, bestud, bijous, bijoux, bisque, blowup, bonduc, boojum, bosque, boxful, brogue, bugout, bulbul, bulgur, bunkum, bupkus, buyout, byssus, cactus, caecum, caique, callus, calque, campus, canful, cangue, cantus, capful, carful, carpus, casque, catgut, catsup, caucus, census, centum, cercus, cereus, cerium, cerous, cesium, cestus, chabuk, cheque, cherub, chiaus, chirus, chorus, cilium, cinque, circus, cirque, cirrus, cistus, citrus, claque, clavus, clique, cliquy, clonus, cloque, cobnut, coccus, cockup, coitus, coleus, colour, comous, concur, conium, consul, copout, corium, cornua, cornus, corpus, coypus, crinum, crocus, cultus, cundum, cupful, cuprum, curium, cuscus, cutout, cymous, cyprus, dadgum, dengue, detour, devour, devout, dibbuk, dictum, dimout, dingus, dinkum, dirdum, disbud, discus, diseur, dolour, dorbug, dorsum, drogue, dugout, dumdum, dustup, dybbuk, dyvour, earbud, earful, efflux, eggcup, embrue, englut, ensoul, erbium, estrum, estrus, exequy, exodus, eyecup, eyeful, faceup, famous, favour, ferrum, fescue, fichus, fitful, flatus, foetus, foldup, folium, fondue, fondus, frenum, fucous, fundus, fungus, furfur, gallus, gangue, genius, giaour, glomus, gonium, gradus, granum, gweduc, gypsum, hagbut, haikus, hallux, hamaul, hangup, hatful, helium, hiatus, hiccup, hognut, holdup, honour, hookup, hubbub, humbug, hummus, humour, iambus, imbrue, indium, influx, inhaul, inpour, insoul, iodous, ionium, ireful, iterum, jarful, joyful, joyous, jugful, kalium, kanzus, kickup, kombus, kronur, krubut, kudzus, kultur, labium, labour, labrum, langue, langur, lapful, lapsus, larrup, lawful, layout, league, limbus, lineup, lingua, linkup, litmus, lockup, lookup, lupous, luteum, lyceum, magnum, mahout, makeup, mamluk, manful, manque, mantua, maraud, markup, marque, masque, meatus, medium, medius, mentum, miaous, midgut, milium, minium, miscue, miscut, missus, mockup, moghul, morgue, mosque, mucluc, mucous, mudbug, mugful, muggur, mukluk, muktuk, murmur, museum, muumuu, naevus, nairus, nimbus, nodous, obelus, obolus, odious, oidium, oilcup, omasum, opaque, osmium, osmous, ostium, outgun, outjut, output, outrun, padauk, padouk, palpus, panful, pappus, pareus, parous, passus, payout, peanut, peepul, peplum, peplus, perdue, perdus, phylum, pickup, pignus, pignut, pigout, pilaus, pileum, pileup, pileus, pilous, plague, plaguy, plaque, plenum, plexus, podium, poilus, popgun, porous, poseur, possum, potful, poyous, prahus, prebuy, precut, prevue, primus, progun, pullup, pulque, pursue, pushup, putout, qiviut, quipus, quorum, radium, radius, ragout, ramous, recoup, rectum, rectus, redbud, redbug, redout, reflux, regius, reglue, regnum, repour, rescue, rhesus, rictus, rigour, rimous, risque, rotgut, rubout, ruckus, rueful, rufous, rugous, rumour, rumpus, runout, sacbut, sacque, sacrum, sadhus, sagbut, sajous, sambur, sannup, santur, sapour, savour, schlub, scutum, sendup, sensum, septum, serous, setous, setout, shaduf, shamus, shogun, shoyus, shroud, siddur, siglum, sinful, slipup, snafus, sobful, sodium, soleus, sprout, sputum, statue, status, stroud, stylus, subdue, subgum, sulcus, sulfur, tabour, takeup, talcum, tambur, tarsus, teacup, tectum, tedium, telium, tendus, tenour, tergum, thymus, tinful, tissue, tittup, tongue, topful, tophus, torous, torque, tossup, tragus, tryout, tubful, tuchun, tumour, tuneup, turnup, tussur, typhus, ubique, umlaut, unglue, unique, unplug, unshut, unspun, untrue, uraeus, useful, uterus, uveous, vacuum, valgus, valour, vapour, vatful, vellum, velour, vendue, venous, versus, vertus, vigour, villus, vinous, virtue, virtus, viscus, vodoun, vodous, voyeur, vulgus, waeful, walkup, walnut, walrus, wammus, wampum, wampus, wangun, warmup, washup, wikiup, wilful, windup, woeful, workup, xystus, yanqui520 words found.
3-letter wordsaah, aal, aas, aba, aha, ala, alb, ale, alp, als, alt, ape, apt, ash, asp, ate, baa, bah, bal, bas, bat, bel, bet, boa, bop, bos, bot, bus, but, eat, eau, els, eta, eth, hae, hao, hap, has, hat, hep, hes, het, hob, hoe, hop, hot, hub, hue, hup, hut, lab, lap, las, lat, lea, let, leu, lob, lop, lot, oat, obe, oes, ohs, ole, ope, ops, opt, ose, out, pah, pal, pap, pas, pat, pea, peh, pep, pes, pet, pht, poh, pol, pop, pot, pub, pul, pup, pus, put, sab, sae, sal, sap, sat, sau, sea, sel, set, sha, she, sob, sol, sop, sot, sou, spa, sub, sue, sup, tab, tae, tao, tap, tas, tau, tea, tel, the, tho, toe, top, tub, tup, upo, ups, use, uta, uts4-letter wordsaahs, aals, abas, abet, able, abut, alae, alas, alba, albs, ales, aloe, alps, also, alto, alts, apes, apse, asea, atap, ates, atop, auto, baal, baas, baht, bale, bals, base, bash, bast, bate, bath, bats, beat, beau, bels, belt, best, beta, beth, bets, bhut, blae, blah, blat, blet, blot, blue, boas, boat, bola, bole, bolt, bops, bosh, bota, both, bots, bout, buhl, bush, bust, buts, east, eath, eats, epha, epos, etas, eths, habu, haes, haet, hale, halo, halt, haps, hasp, hast, hate, hats, haul, haut, heal, heap, heat, help, hest, hets, hobs, hoes, hole, holp, hols, holt, hope, hops, hose, host, hots, hubs, hues, hula, huts, labs, laps, lase, lash, last, late, lath, lats, leap, leas, lept, lest, lets, lobe, lobs, lope, lops, lose, lost, lota, loth, lots, loup, lout, lube, lues, lush, lust, lute, oast, oath, oats, obes, olea, oles, opah, opal, opes, opts, opus, ouph, oust, outs, pale, palp, pals, papa, paps, pase, pash, past, pate, path, pats, peal, peas, peat, pehs, pelt, pepo, peps, peso, pest, pets, phat, phot, phut, plat, plea, pleb, plop, plot, plus, poet, pole, pols, pope, pops, pose, posh, post, pots, pout, pubs, pula, pule, pulp, puls, pupa, pups, push, puts, sabe, sale, salp, salt, sate, saul, seal, seat, sept, seta, shea, shoe, shop, shot, shul, shut, slab, slap, slat, slob, sloe, slop, slot, slub, slue, slut, soap, sola, sole, soph, soth, soul, soup, spae, spat, spot, spue, stab, step, stoa, stob, stop, stub, suba, suet, supe, tabs, tabu, tael, tala, tale, taos, tapa, tape, taps, taus, teal, teas, tela, tels, tepa, thae, thou, thus, toea, toes, tola, tole, tolu, tope, toph, tops, tosh, tuba, tube, tubs, tule, tups, tush, upas, utas5-letter wordsabase, abash, abate, abets, ables, about, abuse, abuts, alate, albas, aleph, aloes, aloha, alpha, altho, altos, appal, appel, apple, ataps, atlas, autos, baals, bahts, balas, bales, balsa, basal, baste, bates, bathe, baths, beast, beats, beaus, beaut, belts, besot, betas, beths, bhuts, blahs, blase, blast, blate, blats, bleat, blest, blets, bloat, blots, blues, bluet, blush, boast, boats, bohea, bolas, boles, bolts, bolus, botas, botel, boule, bouse, bouts, buhls, buteo, butle, ephas, estop, ethos, habus, haets, hales, halos, halts, haste, hates, hauls, haute, heals, heaps, heats, helot, helps, holes, holts, hopes, hosel, hosta, hotel, house, hulas, lapse, lathe, laths, leaps, leapt, leash, least, lehua, lepta, letup, loath, lobes, lopes, lotah, lotas, lotus, loupe, loups, louse, louts, lubes, lutea, lutes, oaths, obeah, opahs, opals, ouphe, ouphs, ousel, palea, pales, palet, palps, papal, papas, paseo, pasha, pasta, paste, pates, paths, pause, peals, peats, pelts, pepla, pepos, pesto, petal, phase, phots, phuts, plash, plate, plats, pleas, pleat, plebs, plops, plots, plush, poets, poles, popes, poult, pouts, psoae, pubes, pules, pulps, pulse, pupae, pupal, pupas, sable, sabot, salep, salpa, sault, saute, selah, sepal, septa, setal, setup, shale, shalt, shape, shaul, sheal, sheol, shlep, shoal, shoat, shote, shout, shute, slate, slept, slope, sloth, south, spale, spate, spelt, splat, spout, sputa, stale, staph, steal, stela, stoae, stole, stope, stoup, stupa, stupe, subah, tabes, tabla, table, tabus, taels, talas, tales, talus, tapas, tapes, taupe, teals, telos, tepal, tepas, tesla, thole, those, thous, tolas, toles, tolus, topes, tophe, tophs, touse, tsuba, tubae, tubal, tubas, tubes, tules, upset6-letter wordsabates, ablate, ablaut, ablest, ablush, alates, alephs, alohas, alphas, althea, appals, appeal, appels, apples, appose, aslope, basalt, bateau, bathes, bathos, beauts, bleats, bloats, blouse, bluest, bluets, boatel, boheas, botels, boules, bushel, bustle, buteos, butles, halest, haloes, haslet, helots, hopple, hostel, hotels, housel, hustle, lappet, laptop, lathes, lehuas, letups, loathe, lobate, lotahs, loupes, obeahs, obelus, oblast, oblate, obtuse, osteal, ouphes, palate, palest, palets, palpus, papula, papule, pastel, pathos, pausal, pelota, peplos, peplus, petals, plates, pleats, postal, potash, poults, pueblo, pupate, salpae, salute, sapota, sapote, septal, shelta, shlepp, shoppe, sleuth, solate, solute, spathe, stable, staple, suable, sublet, sublot, subtle, sulpha, supple, tablas, tables, tapalo, taupes, tepals, tholes, tophes, tophus, topple, tousle, tupelo, upbeat, upheap, upleap, upshot, upstep, usable7-letter wordsablates, ablauts, altheas, apostle, appeals, appulse, asphalt, beshout, boatels, boletus, hatable, hopples, lappets, laptops, loathes, oblates, outleap, palates, palpate, papulae, papules, pasteup, pelotas, phaseal, phoebus, plateau, potable, pueblos, pulsate, pupates, shapeup, spathal, spatula, stopple, sublate, subplot, tableau, tapalos, taphole, teashop, topples, tupelos, upbeats, upheaps, upleaps, upleapt8-letter wordsabsolute, alphabet, apholate, applause, outleaps, palpates, papulose, petalous, phaseout, plateaus, populate, potables, shapable, sulphate, tableaus, tapholes, taphouse9-letter wordsalphabets, apetalous, apholates, populates, stoppable
A zero-grade is a term used in grammar to describe an ablaut form of a root characterized by the absence of the basic ablauting vowel phonemes */e/ and */o/.
ablaut, barbut, besmut, bugout, buyout, catgut, cobnut, copout, cutout, devout, dimout, dugout, englut, hagbut, hognut, krubut, layout, mahout, midgut, miscut, outjut, output, payout, peanut, pignut, pigout, precut, putout, qiviut, ragout, redout, rotgut, rubout, runout, sacbut, sagbut, setout, sprout, tryout, umlaut, unshut, walnut42 words
The Etruscans were an ancient civilization that existed in Italy before the rise of the Roman Empire, while Latin refers to the language and culture of ancient Rome. The Etruscans had their own distinct language and art style, which influenced Roman culture but was eventually absorbed and replaced by Latin.
A number of objects or events arranged or coming one after the other in succession.A set of stamps, coins, or currency issued in a particular period.Physics & Chemistry. A group of objects related by linearly varying successive differences in form or configuration: a radioactive decay series; the paraffin alkane series.Mathematics. The sum of a sequentially ordered finite or infinite set of terms.Geology. A group of rock formations closely related in time of origin and distinct as a group from other formations.Grammar. A succession of coordinate elements in a sentence.A succession of usually continuously numbered issues or volumes of a publication, published with related authors or subjects and similar formats.A succession of regularly aired television programs, each one of which is complete in and of itself.Sports. A number of games played by the same two teams, often in succession.Baseball. The World Series.Linguistics. A set of vowels or diphthongs related by ablaut, as in sing, sang, sung, and song.By Gabija PS.I got this from my dictionary!
O.E. cwen "queen, female ruler of a state, woman, wife," from P.Gmc. *kwoeniz, ablaut variant of *kwenon (source of quean), from PIE *gwen- "woman, wife" supposedly originally "honored woman" (cf. Greek gyné "a woman, a wife;" Gaelic bean "woman;" Skt. janis "a woman," gná "wife of a god, a goddess;" Avestan jainish "wife;" Armenian kin "woman;" O.C.S. zena, O.Pruss. genna "woman;" Goth. qino "a woman, wife; qéns "a queen"). English seems unique in I.E. in having a word for "queen" that is not a fem. derivative of the one for "king." The original sense seems to have been "wife," specialized by O.E. to "wife of a king." Used of chess piece from mid-15c., of playing card from 1570s. Of bees from c.1600 (until late 17c., they generally were thought to be kings; cf. "Henry V," I.ii). Meaning "male homosexual" (especially a feminine and ostentatious one) first recorded 1924; probably an alteration of quean in this sense. Queen Anne first used 1878 for "style characteristic of the time of Queen Anne of Great Britain and Ireland," who reigned 1702-14.
The past participle in German is formed by adding a ge- prefix to the verb stem, followed by the ending -t or -en depending on the verb. For example, the past participle of "machen" (to do) is "gemacht," and the past participle of "sprechen" (to speak) is "gesprochen."
Unlike regular English nouns that form the plural by adding 's' or 'es' to the end of the word, irregular English nouns require vowel or consonant changes, or suffixation. For some common nouns of Old English origin, the vowel undergoes a change (ablaut). For example:foot > feetman > menwoman > womenmouse > micetooth > teethSome other common nouns of Old English origin require the addition of 'n' or 'en' to form the plural. For example:child > childrenox > oxenYet other common nouns, which are often of Old English origin and refer to groups of animals, have identical plural and singular form. For example:deer > deermoose > moosetrout > troutoffspring > offspringsheep > sheepFor nouns of Latin origin that end in an 'a', change the 'a' to 'ae' to form the plural. For example:formula > formulaealumna > alumnaeFor nouns of Latin origin that end in 'ex' or 'ix', change the suffix to 'ices'. For example:matrix > matricesvertex > verticesindex > indicesFor nouns of Latin origin that end in 'is', change the 'is' to 'es'. For example:axis > axescrisis > crisesanalysis > analysesthesis > thesesFor nouns of Latin origin that end in 'on', change 'on' to 'a'. For example:criterion > criteriaphenomenon > phenomenaautomaton > automataFor nouns of Latin origin that end in 'um', change 'um' to 'a'. For example:datum > datamedium > mediaaddendum > addendamillennium > millenniaFor nouns of Latin origin that end in 'us', change the 'us' to 'i', 'era', 'ora' or 'es'. For example:syllabus > syllabigenus > generacorpus > corporacensus > censusesFor nouns of Greek origin that end in 'ma', add 'ta' to the end of the word to form the plural. For example:dogma > dogmatastigma > stigmataschema > schemataFor nouns of French origin that end in 'eau', add 'x' to the end of the word to form the plural. For example:chateau > chateauxbeau > beauxbureau > bureauxFor nouns of Hebrew origin, add 'im' or 'ot' to the end of the word to form the plural. For example:cherub > cherubimmatzah > matzot
In English,strong, or irregular verbs form their past tenses by means of ablaut, that is a change in the stem vowel. They are among the oldest and commonest of English verbs. For example take:took; come:came; see:saw; write:wrote, and so on. The verbs to go and to be even have a different stem - or two!- in the past tenses.Weak, or regular verbs form their past tenses by the addition of the suffix, -d, -ed or -t, without changing the stem vowel. For example ask:asked; donate:donated; learn; learned or learnt. Some otherwise regular verbs may distinguish between the active and the passive past participle, for example proved:proven and mowed:mownNewly coined verbs are weak, and it may seem that the productive period of strong verbs is over, but the English speaker's affinity for the older, strong forms is still in operation, as seen in popular usages like dive:dove and sneak:snuck, where the "correct" past forms are dived and sneaked, respectively.
Some examples of irregular plurals are:man, menperson, peoplegoose, geesebasis, basesoasis, oasesfoot, feettooth, teethmouse, micecrisis, crisesemphasis, emphases
4-letter wordsabet, able, abut, acne, acta, alae, alan, alba, alec, alee, anal, anta, ante, atap, aunt, baal, bale, bane, bate, bean, beat, beau, been, beep, beet, belt, bene, bent, beta, blae, blat, blet, blue, bunt, caca, cane, cant, cape, cate, caul, ceca, celt, cent, cepe, cete, clan, clap, club, clue, cube, cult, cute, elan, etna, lace, lane, late, lean, leap, leet, lent, lept, lube, luce, luna, lune, lunt, lute, nabe, nape, neap, neat, neep, paca, pace, pact, pale, pane, pant, pate, peal, pean, peat, peel, peen, pele, pelt, pent, plan, plat, plea, pleb, puce, pula, pule, puna, punt, tabu, tace, tael, tala, talc, tale, tapa, tape, teal, teel, teen, tela, tele, tepa, tuba, tube, tule, tuna, tune, ulan, ulna, unbe5-letter wordsabate, abele, aceta, acute, alane, alant, alate, anele, antae, apace, apnea, bacca, banal, beaut, becap, betel, blate, bleat, bleep, blent, bluet, blunt, butle, cabal, cable, caeca, canal, caput, cecal, celeb, clapt, clean, cleat, clepe, clept, culet, culpa, cupel, eaten, eclat, elate, elect, elute, enact, enate, epact, etape, lance, laten, lauan, leant, leapt, leben, lepta, letup, lunet, lutea, natal, paean, palea, palet, panel, paten, peace, pecan, penal, pence, petal, place, plane, plant, plate, pleat, plebe, plena, tabla, table, taupe, telae, tepal, tubae, tubal, ulnae, ulpan, unapt, uncap, uncle, unlet6-letter wordsablate, ablaut, accent, accept, acetal, actual, acuate, anlace, apneal, baccae, bacula, baleen, bateau, beaten, beleap, buccal, butane, butene, cablet, caecal, calpac, canape, cancel, cantle, canula, caplet, captan, catena, catnap, cental, cetane, culpae, cuneal, eluant, eluate, eluent, enable, enlace, eupnea, lacuna, lacune, lanate, lancet, lateen, launce, lucent, lunate, nebula, nebule, palace, palate, paleae, peanut, pecten, pencel, penult, placet, planet, platan, platen, teacup, tenace, unable, unbelt, unlace, upbeat7-letter wordsabluent, actable, baccate, balance, beleapt, bluecap, canulae, capable, capelan, capelet, catenae, cenacle, cleanup, cuneate, eatable, epaulet, lactean, lacunae, lucence, nebulae, peccant, placate, planate, platane, plateau, tableau, tenable, tunable8-letter wordsaculeate, acutance, calceate, canulate, centuple, cetacean, lacunate, nucleate, panetela, peccable, peculate, pentacle, placenta, tenacula, tuneable9-letter wordsaccentual, petulance, placentae, unactable, uneatable10-letter wordsacceptable12-letter wordsunacceptable
abacus, ablaut, acarus, accrue, acetum, acinus, adieus, adieux, adnoun, adytum, aecium, aeneus, afflux, aidful, aimful, airbus, alarum, allium, amylum, animus, antrum, arbour, ardour, armful, armour, artful, asarum, asylum, atrium, aureus, aurous, auteur, avenue, awmous, backup, bagful, barbut, barium, barque, basque, battue, bayous, bedaub, bedbug, bedrug, befoul, belaud, besmut, bestud, bijous, bijoux, bisque, blowup, bonduc, boojum, bosque, boxful, brogue, bugout, bulbul, bulgur, bunkum, bupkus, buyout, byssus, cactus, caecum, caique, callus, calque, campus, canful, cangue, cantus, capful, carful, carpus, casque, catgut, catsup, caucus, census, centum, cercus, cereus, cerium, cerous, cesium, cestus, chabuk, cheque, cherub, chiaus, chirus, chorus, cilium, cinque, circus, cirque, cirrus, cistus, citrus, claque, clavus, clique, cliquy, clonus, cloque, cobnut, coccus, cockup, coitus, coleus, colour, comous, concur, conium, consul, copout, corium, cornua, cornus, corpus, coypus, crinum, crocus, cultus, cundum, cupful, cuprum, curium, cuscus, cutout, cymous, cyprus, dadgum, dengue, detour, devour, devout, dibbuk, dictum, dimout, dingus, dinkum, dirdum, disbud, discus, diseur, dolour, dorbug, dorsum, drogue, dugout, dumdum, dustup, dybbuk, dyvour, earbud, earful, efflux, eggcup, embrue, englut, ensoul, erbium, estrum, estrus, exequy, exodus, eyecup, eyeful, faceup, famous, favour, ferrum, fescue, fichus, fitful, flatus, foetus, foldup, folium, fondue, fondus, frenum, fucous, fundus, fungus, furfur, gallus, gangue, genius, giaour, glomus, gonium, gradus, granum, gweduc, gypsum, hagbut, haikus, hallux, hamaul, hangup, hatful, helium, hiatus, hiccup, hognut, holdup, honour, hookup, hubbub, humbug, hummus, humour, iambus, imbrue, indium, influx, inhaul, inpour, insoul, iodous, ionium, ireful, iterum, jarful, joyful, joyous, jugful, kalium, kanzus, kickup, kombus, kronur, krubut, kudzus, kultur, labium, labour, labrum, langue, langur, lapful, lapsus, larrup, lawful, layout, league, limbus, lineup, lingua, linkup, litmus, lockup, lookup, lupous, luteum, lyceum, magnum, mahout, makeup, mamluk, manful, manque, mantua, maraud, markup, marque, masque, meatus, medium, medius, mentum, miaous, midgut, milium, minium, miscue, miscut, missus, mockup, moghul, morgue, mosque, mucluc, mucous, mudbug, mugful, muggur, mukluk, muktuk, murmur, museum, muumuu, naevus, nairus, nimbus, nodous, obelus, obolus, odious, oidium, oilcup, omasum, opaque, osmium, osmous, ostium, outgun, outjut, output, outrun, padauk, padouk, palpus, panful, pappus, pareus, parous, passus, payout, peanut, peepul, peplum, peplus, perdue, perdus, phylum, pickup, pignus, pignut, pigout, pilaus, pileum, pileup, pileus, pilous, plague, plaguy, plaque, plenum, plexus, podium, poilus, popgun, porous, poseur, possum, potful, poyous, prahus, prebuy, precut, prevue, primus, progun, pullup, pulque, pursue, pushup, putout, qiviut, quipus, quorum, radium, radius, ragout, ramous, recoup, rectum, rectus, redbud, redbug, redout, reflux, regius, reglue, regnum, repour, rescue, rhesus, rictus, rigour, rimous, risque, rotgut, rubout, ruckus, rueful, rufous, rugous, rumour, rumpus, runout, sacbut, sacque, sacrum, sadhus, sagbut, sajous, sambur, sannup, santur, sapour, savour, schlub, scutum, sendup, sensum, septum, serous, setous, setout, shaduf, shamus, shogun, shoyus, shroud, siddur, siglum, sinful, slipup, snafus, sobful, sodium, soleus, sprout, sputum, statue, status, stroud, stylus, subdue, subgum, sulcus, sulfur, tabour, takeup, talcum, tambur, tarsus, teacup, tectum, tedium, telium, tendus, tenour, tergum, thymus, tinful, tissue, tittup, tongue, topful, tophus, torous, torque, tossup, tragus, tryout, tubful, tuchun, tumour, tuneup, turnup, tussur, typhus, ubique, umlaut, unglue, unique, unplug, unshut, unspun, untrue, uraeus, useful, uterus, uveous, vacuum, valgus, valour, vapour, vatful, vellum, velour, vendue, venous, versus, vertus, vigour, villus, vinous, virtue, virtus, viscus, vodoun, vodous, voyeur, vulgus, waeful, walkup, walnut, walrus, wammus, wampum, wampus, wangun, warmup, washup, wikiup, wilful, windup, woeful, workup, xystus, yanqui520 words found.
There isn't a rule. This is an example of the nonsensical state of English spelling.The origin is Latin; -ant derives from the present participle of 1st conjugation latin verbs while -ent comes from the 2nd, 3rd and 4th conjugations. The matter is further complicated by passage of Latin originals through French to English. The French sensibly adopted -and for their spelling, and generally the English took that on. But around 1500 some academic snobs or other decided English spelling should reflect its true source and left us with the mess we have now.So, the only way you can be sure of the 'correct' English spelling (apart from the exceptions, of course) is to learn Latin!Here's what the online OED has to say:-ant, suffixa. Fr. -ant, sometimes:L. -entem, -ntem, -ntem, ending of pres. pple. (see -ENT); sometimes a later adaptation of -ntem only. All the participial forms were in OFr. levelled under -ant, the sole ending of the pr. pple., as L. amnt-, vidnt-, sednt-, crdent-em in Fr. amant, voyant, séant, croyant. But other words were subsequently adopted in their L. stem form, as prudent, présent, élégant. Hence Fr. words in -ant are of two kinds, one answering to L. -nt, the other to L. -ent, -nt. All were adopted, in their actual Fr. forms, in Eng., where they subseq. became -aunt; then again, with the change of stress, -ant, as L. affdent-em, diff-dent-em, plicnt-em, servient-em, tennt-em, OFr. afiant, defiant, pliant, serjeant, tenant, ME. afia(u)nt, defia(u)nt, plia(u)nt, serjeaunt, tenaunt. Most of them retain -ant, e.g. claimant, pleasant, poursuivant, servant, suppliant, valiant; but since 1500 some have been refashioned with -ent after L., wholly (as apparaunt, -ent), or partly (as in pendant, -ent, dependant, -ent, ascendant, -ent). Hence, inconsistency and uncertainty in the present spelling of many words, in which L. and Fr. analogies are at variance: see -ENT. Many new words of this class have been adopted from L. -ntem directly or through later Fr., or have been formed on L. analogies, or adopted from mod.Fr. and Romance -ant, -ante; as concomitant, protestant, commandant, anæsthesiant. For sense, see -ENT.-ent, suffixa. Fr. -ent, ad. L. -ent-em, the ending of pr. pples. of vbs. of the 2nd, 3rd, and 4th conjugation, as rdent-em, currentem, audientem. (In the pples. of the 3rd and 4th conjugation this ending represents OAryan -nt-, or perh. -ent-, of the ablaut-series -ent-, -ont-, -nt-; cf. Skr. -ant-, -at-, Gr. --, Goth. -and-, OE. -end-; in those of the 2nd conjugation it represents this suffix combined with the thematic -e- of the vb.; similarly the -ant- of the 1st conjugation includes a thematic -a-.) In OFr. this suffix and the corresponding -ant-em of the 1st conjugation were levelled under -ant, the sole ending of the Fr. pr. pple., as riant, courant, mourant, levant (:L. levantem). At a later time many L. forms in -ent-, which had acquired an adj. sense, were adopted in Fr. as adjs. with the -ent- unchanged, as diligent, évident; some of these were duplicates of living ppl. forms in -ant, as convénient = convenant, provident = pourvoyant, confident = confiant. The Fr. words in -ant, -ent, which were adopted into Eng., have generally retained the form of the suffix which they had in Fr.; but since 1500 there has been a tendency to refashion them after Lat., and hence several words in -ant have changed that ending for -ent, either entirely or in certain senses. In mod.Eng. also many Lat. words in -entem have been directly adopted, always in the form -ent. The conflict between Eng. and Fr. analogies occasions frequent inconsistency and uncertainty in the present spelling of words with this suffix; cf. e.g. assistant, persistent; attendant, superintendent; dependant, -ent, independent.2. In sense the words in -ent, -ant are primarily adjs., sometimes distinctly ppl., as convergent, obsolescent, errant, peccant; some, however, are, like many words of the same type in Lat. and Fr., used as ns. (either in addition to the adj. use or exclusively), meaning (a) a personal agent, as agent, claimant, president, regent; (b) a material agent, as coefficient, current, ingredient, secant, tangent, torrent; esp. in Medicine, as aperient, astringent, emollient, expectorant.