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