WordWeb Online

1. A bad-tempered person
   - grump, crank, churl, crosspatch

1. Show one's unhappiness or critical attitude
   "We grouched about the increased work load";
   - grumble, scold, moan

Derived forms: grouched, grouches, grouching

Type of: complain, disagreeable person, kick, kvetch [N. Amer], moan, plain [archaic], quetch, sound off, unpleasant person

Encyclopedia: Grouch