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