sourpuss
sour·puss
noun
1.
someone with a habitually sullen or gloomy expression
Origin
From sour (“bad-tempered”) + puss (“slang for mouth”).
Related words
Word family
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.