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