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