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