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