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