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