What does "spoilsport" mean?

Someone who puts an end to others' fun, especially harmless fun.

What is a synonym for "spoilsport"?

Common synonyms include: killjoy, party pooper, wet blanket, buzzkill, cold fish, craic killer.

Pronounced //ˈspɔɪl.spɔɹt//.

//ˈspɔɪl.spɔɹt// adj, noun

adj, noun ·Uncommon ·Advanced level

Noun

1
Someone who puts an end to others' fun, especially harmless fun.
"I know I am a sad spoilsport, but it would make me wretched."
2
someone who spoils the pleasure of others wordnet

Adjective

1
Like a spoilsport.
"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."