Here's what rhymes with concavum.
Words that almost rhyme with concavum
caution cation possum blossom soften rosin opossum precaution microcosm herniation libation macrocosm tryptophan calumniation column carom bottom solemn forum quorum condom bonum quantum boredom decorum mortem balsam dorsum sorghum wampum foursome slalom cockscomb problem drachm nostrum rostrum flotsam metronome stardom thraldom thralldom gastronome sugarplum falciparum postpartum