Here's what rhymes with reargument.
Words that almost rhyme with reargument
ligament irritant incident instrument implement innocent intimate filament increment impotent indolent insolent virulent immigrant militant simulate stimulant vigilant visitant littlest sycophant cheerfullest difficult infinite legitimate intricate coincident predicament silicate medicament belittlement nimblest ficklest equivalent imprisonment participant ambivalent omnipotent particulate empiricist militarist precipitant dissimulate ministrant nonvirulent timpanist magnificent inarticulate gesticulate nonmilitant abolitionist grandiloquent coalitionist individuate nonequivalent nonparticipant prohibitionist exhibitionist indiscriminate