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