There are 247 words like that in the Scrabble dictionary. Here are 34 of the most common ones:
addressee
balloon
balloonist
barroom
bassoon
bookkeeper
bookkeeping
buffoon
buffoonery
coffee
coffeecake
coffeehouse
coffeepot
committee
coolly
fishhook
fricassee
gazetteer
greenness
keenness
lessee
raccoon
roommate
settee
spittoon
subcommittee
succeed
tattoo
toffee
unneeded
whippoorwill
woollen
woolly
yippee
fettuccinehiccuppingoccurrencesuccessfulsuccessive
balloon coffee
· Mississippi · Tennessee
coffeetoffeesettee
accessoryaddressaggressiveannuallyappallassessassassinbitternessbuccaneerblurrinessbulletproofbutterballbuttresscassettecarelessnesscarryallcoffeecommissarycommissioncrabbinessfurrinesshappinesspennilesspuffinessruddinesssluggishnessstiffnessstillnessstubbornnessstuffinesssuccesstallnessvolleyballwellnesswheelbarrow
fettuccinehiccuppingoccurrencesuccessfulsuccessive
abbreviationaccumulationaccentuationaggressivelyappreciationappropriatedconnotationsdissatisfieddisassociateexpressivelyinstallation
balloon coffee
Mississippi and Tennessee
· Mississippi · Tennessee
coffeetoffeesettee
accessoryaddressaggressiveannuallyappallassessassassinbitternessbuccaneerblurrinessbulletproofbutterballbuttresscassettecarelessnesscarryallcoffeecommissarycommissioncrabbinessfurrinesshappinesspennilesspuffinessruddinesssluggishnessstiffnessstillnessstubbornnessstuffinesssuccesstallnessvolleyballwellnesswheelbarrow
Well, darling, the word "bookkeeper" is a fun little gem with two sets of double letters. It's like a little party for the eyes. So, if you're ever in need of a word to impress your friends with your linguistic prowess, there you go.
accessaccommodationsbrassinessbeefinessembarrasscoffeechildlessnesscarelessnesscoolnesscheerfullycrisscrossclasslesscommitteecommittedfussinessfootlessfearlessnessfootloosefoolishnesshellishnesshopelessnessheaddresshappinessjoblessnesslawlessnessmoonlessmessinesspuffinessprissinesspeevishnesspennilessraccoonruthlessnesssuccesssleeplesssloppinesssleevelessspookinessstuffinessstiffnessspeechlesssillinessscruffinesstoothlesstattootoffee
airlessnessaimlessnessagelessnessaggressivenessartlessnessassassinassertivenessassessbossinessblissfulnessbrassinessbreathlessnessceaselessnesscrossnesscrassnesscarelessnesschildlessnessclasslessnessexpressivenessfaultlessnessfearlessnessflawlessnessfruitlessnessglassinessglossinessgrossnessguilelessnessgutlessnessheartlessnesshelplessnesslawlessnessjoylessnessmassivenessmindlessnessmessinesspainlessnesspointlessnesspassivenesspossessprogressivenessrepressivenessremorselessnessselflessnesssenselessnessshamelessnesssleeplessnesssoullessnessspinelessnessstressfulnesssubmissivenessthoughtlessnesstimelessnessuselessness
buffcuffmuffpuffballbellbillbullcallcellmallmillmullnullpillpullrollsillselltilltelltallwallwellwillbassbosscussfusshisskisslessmessmissmassmosslosspasssasstossmuttmittbuttdollfallfellfillfull
Mississippi has three sets of doubled letters, two double s pairs, and one double p pair. Tennessee also has three pairs of doubled letters in its name.