An inherited English noun whose earliest recorded sense was enemy or foe, not demon. Old English fēond belonged to a Germanic lexicalized one-who-hates formation; Middle English fẹ̄nd preserved enemy, Satan, demon, possession, and monster senses across extensive spelling variation; modern fiend continues the same English line. OED’s revised 2026 entry marks the literal enemy sense obsolete after the medieval record, explains the Devil as the ultimate Enemy, and documents long-versus-short vowel competition before the long vowel became dominant by the eighteenth century. The Middle English Dictionary independently exposes 188 quotations across eight senses without claiming a complete corpus.