Here's what rhymes with idiosyncrasy.
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 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 lessee 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 qi rhe rny tiie tke xxxii xxxiii saree whee tree agree pre qui cc plea trustee tlie xvi xvii cd glee gli kb oversee pc referee rupee sd sibi xxvi xxvii alii pari prix quis spree tv xxxvi xxxvii oversea scree settee banshee bursae curie prithee ranee suttee twee artsy aurorae emcee epee fusee gutsy quinsy brie honoree sudsy topee puttee sirree yippee guarantee nobody debris esprit exp foresee marquis mortgagee nominee addressee assignee db grantee guaranty licensee pg phonology quelque tp trainee apogee bailee bt donee dp ftp jt legatee marquee pd pensee repartee tb vendee amphorae goatee queerly tepee undersea abscissae amputee manatee parolee wormy calliope internee returnee teepee conferee draftee whoopee enlistee florae footsie guarani kedgeree singletree soignee tootsie degree decree http bourgeoisie mit devotee interviewee jubilee appellee appointee transferee tympani bowsprit filigree retiree honeybee timpani attendee escapee invitee monody wannabe chiropody colossally dungaree jamboree inductee maharanee paltrier sultrier wannabee shoetree disagree absentee consignee hyperbole franchisee detainee potpourri axletree abductee whiffletree whippletree wintrier diastole bumblebee deportee