wet blanket

US /wɛt ˈblæŋkɪt/
UK /wɛt ˈblæŋkɪt/
"wet blanket" picture
1.

興ざめな人, 水を差す人

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.
ジョンをパーティーに誘わないで。彼は本当に興ざめな人だから。
She's always being a wet blanket, complaining about everything.
彼女はいつも興ざめな人で、何にでも文句を言う。