spoilsports

don't be a spoilsport and ruin the fun for everyone!

we didn't want any spoilsports bringing the mood down.

the kids were disappointed by the adults' spoilsport behavior.

he's a notorious spoilsport, always finding something to complain about.

let's try to avoid being spoilsports and enjoy the party.

their constant negativity made them total spoilsports at the picnic.

we wanted a carefree vacation, not a bunch of spoilsports.

please don't be a spoilsport and tell them about the surprise.

the spoilsports complained about the food and the music.

we tried to ignore the spoilsports and have a good time.

don't be such a spoilsport; it's just a game!