Here's what rhymes with frightening.
lightening tightening brightening heightening enlightening Words that almost rhyme with frightening
ripening widening likening livening licensing rioting rivalling rivaling siphoning titling cycling silencing dialing dieting idling piloting spiraling enlivening spiralling pirating dialling sniveling libeling recycling entitling quieting sidling playacting redialing redialling disquieting motorcycling