killjoy

American  

[kil-joi] / ˈkɪlˌdʒɔɪ /

Or kill-joy

noun

1. a person who spoils the joy or pleasure of others; spoilsport.

   I don't want to be a killjoy, but there is too much emphasis on booze during the holiday season.

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killjoy British  

/ ˈkɪlˌdʒɔɪ /

noun

1. a person who spoils other people's pleasure

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Etymology

Origin of killjoy

First recorded in 1770–80

Example Sentences

But killjoys swiftly arrived to dismiss it as paleolithic brain rot.

From Los Angeles Times

Telling a Jambo to calm down as their team strides into an eight-point lead at the top of the table is to be the worst kind of killjoy.

From BBC

The Civil War, which is jeopardizing his presidency, has turned him into an utter killjoy.

From Los Angeles Times

And the boss might not be such a killjoy after all.

From New York Times

The question haunts Juicy as he tries to turn his pout into a smile for the guests and not be the killjoy his stepfather accuses him of being.

From Los Angeles Times