spoilsport

• spoil-sport (dated)

From the verbal expression spoil sport (“ruin the amusement”).

• (UK) IPA^(key): /ˈspɔɪl.spɔːt/
• (US) IPA^(key): /ˈspɔɪl.spɔɹt/

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• Rhymes: -ɔː(ɹ)t

spoilsport (plural spoilsports)

1. Someone who puts an end to others' fun, especially harmless fun.
   • 1908, Edward Morgan Forster, A Room with a View, Chapter XIV:

     I know I am a sad spoilsport, but it would make me wretched.

   • 1912, George Bernard Shaw, Androcles and the Lion, Act II:

     He looks a spoilsport. There are men in whose presence it is impossible to have any fun: […]

• killjoy, party pooper; see also Thesaurus:spoilsport

spoilsport (comparative more spoilsport, superlative most spoilsport)

1. Like a spoilsport.
   • 2019 September 10, Phil McNulty, “'England horribly fallible in defence' against Kosovo in Euro 2020 qualifying”, in BBC Sport‎:

     It may seem somewhat spoilsport to focus in on this negative after another important victory but to ignore it would be delusion. Southgate will not be letting it escape his attention.