buzzkill

the party was going great until he showed up and became a total buzzkill.

don't be a buzzkill and ruin the mood with negative comments.

his constant complaining was a serious buzzkill for the vacation.

i was excited about the surprise, but my friend was a buzzkill and told me.

the news about the project cancellation was a real buzzkill for the team.

trying to explain the rules to him felt like being a buzzkill.

i hate when someone's negativity is a buzzkill at a fun event.

the unexpected rain was a bit of a buzzkill for our picnic plans.

please don't be a buzzkill and tell them the cake isn't real.

his constant corrections were a buzzkill during the karaoke night.

i didn't want to be a buzzkill, but i had to point out the problem.