Definition of "grumpy" in English

adjective

1. Dissatisfied and irritable.

   • The old man was grumpy because he couldn’t find his glasses.

noun

1. (informal) A dissatisfied and irritable person.

   • "Bunch of grumpies, always scowling and muttering," complained the new employee. "Dear me, I'm afraid you'll find the same type of people here," the foreman responded.