sourpuss

From sour (“bad-tempered”) +‎ puss (“slang for mouth”).

• Audio (US):

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• IPA^(key): /ˈsaʊə(ɹ)ˌpʊs/

sourpuss (plural sourpusses)

1. (informal) A person who is habitually gloomy, sullen or miserable; a grouch. A scowling person.
   • 2025, S.E. Case, “Bonus Comics”, in Rigsby WI, volume 1: Foothold, →ISBN, page Ladies Be Shopping:

     They butt heads sometimes because Jenna can be pretty selfish and tone-deaf, and Jeordie can be a little bit of a sourpuss.

• See also Thesaurus:complainer

sourpuss (third-person singular simple present sourpusses, present participle sourpussing, simple past and past participle sourpussed)

1. To make a gloomy, sullen or miserable facial expression; to scowl.
   • 2006 August 6, Jackson Publick, “Twenty Years to Midnight” (11:16 from the start), in The Venture Bros.‎^[1], season 2, episode 5, spoken by Pirate Captain (Christopher McCulloch):

     “Oh, stop your sourpussing. We got what you needed.”