Words that almost rhyme with spasmum

jasmine gasman upperclassman underclassman

spasm atom annum album chasm datum tandem alum anthem plasm tantum bantam talcum pablum handsome random maxim stratum fathom madam phantom ransom madame antrum tantrum hansom phantasm sachem transom platinum amalgam magnum sanctum gladsome sphagnum angstrom cytoplasm neoplasm macadam enthusiasm memorandum substratum nonrandom protoplasm tarmacadam iconoclasm