Here's what rhymes with optassem.
Words that almost rhyme with optassem
passion chasm fasten fathom spasm plasm tation fashion ration assassin lation diapason phantasm dispassion unfasten refasten compassion cytoplasm neoplasm refashion protoplasm enthusiasm iconoclasm datum handsome maxim madam ransom tandem madame tantum hansom sachem transom bantam talcum pablum random platinum stratum phantom magnum tantrum gladsome amalgam substratum sanctum macadam sphagnum nonrandom memorandum tarmacadam