Buzzkill
Definition 1 of 1

Metaphor
Think of a buzzkill as something that 'kills' the excitement.

At the party, the unexpected rules were a buzzkill.
Emotional
Using buzzkill can express frustration when expectations are not met.

Finding out about the cancellation was a total buzzkill.
Context
Use buzzkill in casual conversations to emphasize disappointment.

His comments about the film were a buzzkill.
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