Here's what rhymes with rarefactum.
Words that almost rhyme with rarefactum
prolactin phantom sanctum sachem handsome maxim datum fathom tantum hansom bantam stratum chasm madam ransom spasm madame tantrum talcum pablum random platinum amalgam tandem magnum plasm transom gladsome sphagnum macadam phantasm memorandum substratum enthusiasm cytoplasm neoplasm nonrandom tarmacadam protoplasm iconoclasm