Here's what rhymes with assassin.
fasten unfasten refasten diapason Words that almost rhyme with assassin
fashion passion ration fathom lation tation refashion chasm spasm compassion plasm dispassion phantasm neoplasm enthusiasm cytoplasm iconoclasm protoplasm happen hadn famine salmon satin haben fatten sadden barren cabin cannon canon faction wagon gallon baron bastion falcon saffron flatten hangman latin slacken taxon waxen batten chanson flagon flaxen mammon talon gammon madden damson gasman imagine abandon captain fraction sanction chaplain dragon mansion canyon canton caption stallion blacken bracken dampen jasmine madmen adaption banyan capstan gladden handgun platen batsman scansion scallion klaxon badman badmen flashgun raglan taxman taxmen sandmen reaction attraction grandson battalion refraction traction inaction exaction medallion plantain clansman gravamen trashcan gyrfalcon expansion companion transaction abstraction diffraction craftsman compaction plankton draftsman draughtsman impaction infraction redaction reexamine zooplankton benefaction clansmen draftsmen landsman triathlon upperclassman bandsman malefaction interaction satisfaction contraction extraction distraction retraction subtraction liquefaction prolactin rarefaction contraption detraction stupefaction overreaction pentathlon rapscallion underclassman phytoplankton counteraction protraction petrifaction vitrifaction dissatisfaction putrefaction