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