Definitions
1.AdjectiveDismal and gloomy, cold and forbidding."Life was grim in many northern industrial towns."
2.AdjectiveRigid and unrelenting."His grim determination enabled him to win."
3.AdjectiveGhastly or sinister."A grim castle overshadowed the village."
4.AdjectiveDisgusting; gross."– Wanna see the dead rat I found in my fridge?– Mate, that is grim!"
5.AdjectiveFierce, cruel, furious.
6.VerbTo make grim; to give a stern or forbidding aspect to.
7.Noun A promiscuous woman.
8.NounAnger, wrath.
9.NounA specter, ghost, haunting spirit.