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Noun: grump  grúmp
  1. A bad-tempered person
    "The old grump complained about everything";
    - grouch, crank, churl, crosspatch [informal]
Verb: grump  grúmp
Usage: informal
  1. To complain or express dissatisfaction in a bad-tempered manner
    "He spent the entire morning grumping about the weather"

Derived forms: grumped, grumping, grumps

Type of: disagreeable person, unpleasant person

Encyclopedia: Grump