Here's what rhymes with additionnent.
Words that almost rhyme with additionnent
dissonant militant vigilant virulent sycophant timpanist difficult ambivalent omnipotent silicate stimulant abolitionist visitant exhibitionist littlest prohibitionist nimblest cheerfullest coalitionist ficklest legitimate participant coincident particulate simulate discriminant empiricist militarist precipitant belittlement ministrant nonvirulent nonmilitant equivalent magnificent imprisonment grandiloquent dissimulate inarticulate individuate gesticulate indiscriminate nonequivalent nonparticipant