noun (n)

• a person given to excessive complaints and crying and whining

  seseorang diberikan kepada berlebihan keluhan dan menangis dan merengek

  Synonym:
  bellyacher, complainer, crybaby, moaner, sniveller, squawker, whiner
  

  source: wordnet30
• One who grumbles.

  satu yang grumbles.

  source: webster1913