wet blanket
US /wɛt ˈblæŋkɪt/
UK /wɛt ˈblæŋkɪt/
1.
rabat-joie, casse-pieds
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.
N'invite pas John à la fête; c'est un vrai rabat-joie.
•
She's always being a wet blanket, complaining about everything.
Elle est toujours un rabat-joie, se plaignant de tout.