wet blanket
US /wɛt ˈblæŋkɪt/
UK /wɛt ˈblæŋkɪt/

1.
perusak suasana, orang yang tidak antusias
a person who spoils other people's fun by being negative and unenthusiastic
:
•
Don't invite John to the party; he's such a wet blanket.
Jangan undang John ke pesta; dia benar-benar perusak suasana.
•
She's always being a wet blanket, complaining about everything.
Dia selalu menjadi perusak suasana, mengeluh tentang segalanya.