Here's what rhymes with pentacovalent.
covalent assailant divalent inhalant Words that almost rhyme with pentacovalent
vacant halest patient payment latent nascent safest raiment vagrant palest sadist sanest vainest fainest statement adjacent latest basement pavement reagent claimant flagrant fragrant blatant curtailment faintest arraignment basest effacement shamefaced cadenced degassed tamest gamest opaqued staidest greatest arrangement attainment impatient placement amazement platelet abatement repayment bracelet bravest abasement plainest wavefront entailment derailment escapement lakefront straightest defacement anapest chastest plainchant ordainment subbasement insanest sedatest unsafest inanest urbanest engagement entertainment affidavit containment supernatant complacent complainant enslavement ascertainment debasement prepayment restatement complaisant misstatement nonpayment overstatement encasement obtainment quaintest underpayment detainment humanest displacement replacement rearrangement derangement estrangement understatement emplacement entrainment intranet misplacement disarrangement infotainment nonadjacent edutainment unchastest disengagement reinstatement prearrangement