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