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