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