The characteristic or quality of being grim.

plural of grimness

Dismal and gloomy, cold and forbidding. / Rigid and unrelenting. / Ghastly or sinister. / Disgusting; gross. / (obsolete) Fierce, cruel, furious.

(transitive, rare) To make grim; to give a stern or forbidding aspect to.

(obsolete) Anger, wrath. / (obsolete) A specter, ghost, haunting spirit.

An English surname

An English surname, probably derived from Old Norse grimr or grimmr

Characterised by grimness; harsh, wrathful, terrible.

simple past tense and past participle of grim

present participle of grim