1. dismal and gloomy, cold and forbidding
    Life was grim in many northern industrial towns.
  2. rigid and unrelenting
    His grim determination enabled him to win.
  3. ghastly or sinister
    A grim castle overshadowed the village.
  4. disgusting; gross
    Wanna see the dead rat I found in my fridge? —Mate, that is grim!

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