| downer(noun, drag, worrier, cynic, killjoy) | |
| gloomy(noun, downer, worrier, cynic, quitter) | |
| gloomy Gus | |
| grump | |
| poor sport(expression, killjoy, spoilsport) | |
| misanthrope(noun, downer, worrier, cynic, quitter) | |
| blanket | |
| cold water(expression, killjoy, spoilsport) | |
| crasher | |
| crepehanger(noun, downer, worrier, cynic, doubter) | |
| depreciator(noun, downer, worrier, cynic, doubter) | |
| drag(killjoy, spoilsport) | |
| fatalist | |
| fuddy-duddy | |
| fusspot | |
| hinderer | |
| loser | |
| marplot(killjoy, spoilsport) | |
| naysayer(noun, pessimist) | |
| nonparticipant |
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| APA | Smart Define. (2015). party pooper thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/party_pooper/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "party pooper thesaurus" https://smartdefine.org/party_pooper/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, party pooper thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/party_pooper/thesaurus/synonyms>. |
| MLA | Smart Define. "party pooper thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/party_pooper/thesaurus/synonyms> |