Meaning

adjective shockingly repellent; inspiring horror

originFrom grue (“(archaic except Northern England, Scotland) to be frightened; to shudder with fear”) + -some (suffix meaning ‘characterized by some specific condition or quality, usually to a considerable degree’ forming adjectives and nouns), probably popularized by the Scottish novelist and poet Walter Scott (1771–1832): see, for example, the 1816 quotation. cognates * Danish grusom (“cruel;…

Etymology from Wiktionary, CC BY-SA 3.0