Fiendlike

Part of speech: adjective

Definitions

1. Demonstrating qualities akin to a malevolent being or wicked spirit
2. Exhibiting traits that suggest a sinister or demonic personality often linked to malice
3. Having characteristics that evoke the image of a malicious or evil entity from folklore or myth

Etymology: "Fiendlike" is a straightforward compound: the noun "fiend" with the suffix "-like", which attaches to nouns to mean "resembling" or "characteristic of." Its structure is transparent, so the interest lies in the parts. "Fiend" traces back to Old English "fēond," meaning an enemy or foe, from a Germanic root that also gave modern German "Feind," still meaning "enemy." Over centuries the word narrowed from any hostile person toward the devil and his followers, which is why a fiend now suggests something diabolical rather than merely hostile. The suffix "-like," from Old English "-lic," is one of English's most productive endings, so the compound adds little beyond combining a sense of wickedness with the idea of resemblance. The result describes conduct that looks like the work of a demon: cruel, malicious, or inhuman in a way that feels supernatural.