sourpuss

from WordNet (r) 3.0 (2006)
sourpuss
    n 1: someone with a habitually sullen or gloomy expression [syn:
         {sourpuss}, {picklepuss}, {gloomy Gus}, {pouter}]
    
from Moby Thesaurus II by Grady Ward, 1.0
20 Moby Thesaurus words for "sourpuss":
      bellyacher, brooder, complainer, crab, crank, crosspatch,
      depressive, gloomy Gus, griper, grouch, grouser, kicker, killjoy,
      malcontent, melancholiac, melancholic, mope, sorehead, spoilsport,
      wet blanket

    

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