Pronunciation IPA (key): /fiːnd/ Audio (US)(file) Noun Singular fiend Plural fiends A fiend is someone who is especially interested in something. Only jazz fiends know about this small club downtown. A fiend is a devil or a monster. The fiends enjoy watching the dead suffer in hell. A fiend is someone who is evil. The police recently arrested the fiend.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads