Here's what rhymes with wtffi.
he she see c sea v ve e ie ii thee fee si z vii dc sie xi xii xiii ci ee hee hie tc bc hae shi shih thi ze fea fie sae sci shee xy zi be we me t de three d free p pp b key tree di g pre tea ye knee ne ac bee li mi plea te flee je ni ti tlie wee fc fhe ki lee nee pea ri ry ski tee wi wie xxi xxii xxiii dd dy flea gi ji lea mea mee ny pc quay sv whieh xxxi yi bb chih dee gee ghee lhe lii nae nie pari pee prix qi rhe rny tiie tke tv xxxii xxxiii bursae twee saree brie whee qui cc xvi xvii cd glee lessee db gli kb pg sd sibi tp xxvi xxvii alii bailee bt donee dp jt pd pensee quis spree tb xxxvi xxxvii scree settee tepee banshee prithee suttee artsy emcee epee gutsy teepee sudsy topee footsie puttee sirree tootsie degree agree decree http trustee debris devotee esprit exp foresee addressee oversee referee rupee trainee apogee appellee ftp vendee amphorae bowsprit goatee oversea queerly undersea abscissae parolee ranee wormy aurorae fusee quinsy draftee honoree whoopee florae kedgeree soignee yippee nobody mit disagree marquis absentee assignee jubilee appointee marquee repartee retiree curie detainee honeybee potpourri attendee escapee internee invitee returnee conferee dungaree paltrier sultrier wintrier shoetree bourgeoisie nominee grantee interviewee licensee quelque diastole legatee transferee tympani filigree franchisee amputee manatee timpani monody wannabe deportee jamboree abductee enlistee inductee maharanee wannabee guarantee mortgagee guaranty phonology consignee hyperbole bumblebee calliope chiropody colossally guarani whiffletree axletree singletree whippletree idiosyncrasy