Some four letter words that end with "o" are:zerohaloherohobointojudokiloalsoaltoautoechomemoontopolosilosolotacotarotrioundoveto
Here are some 6-letter words that begin with the letter O and end with the letter E:obligeobtuseoctaneoctaveofficeonlineonsideopaqueopiateopposeoracleorangeordureorioleornateoutageoxlike
There are not many 4 letter words that end with an O. However, there is trio, as well as taco.
aerobicacerbicarchaicasceticelasticidioticidyllicorganic
A few words starting and ending with a consonant that have o in the middle are:bogboxboycodcogcotcoycowdogdotfogfoxfobgobgodgothothobhophowjobjotloblotloglowmowmobmodmommopnotnowpowpodpoppotrotrobrodrowsobsodsonsowsoytogtomtontoptottowvowwow
oregano
hobo
Some four letter words that end with "o" are:zerohaloherohobointojudokiloalsoaltoautoechomemoontopolosilosolotacotarotrioundoveto
No 7 letter words, but using 6 letters, words beginning with c, ending in s, are clouts and cutlets.
Here are some 6-letter words that begin with the letter O and end with the letter E:obligeobtuseoctaneoctaveofficeonlineonsideopaqueopiateopposeoracleorangeordureorioleornateoutageoxlike
There are not many 4 letter words that end with an O. However, there is trio, as well as taco.
fort
overyou
Some three letter words that end with "o" are:agoegoduowhowootootwoboopoomooloogoo
ferocious, delicious,
aerobicacerbicarchaicasceticelasticidioticidyllicorganic
the pointer sisters