Buzzkill

//ˈbʌzkɪl// noun, slang

Definitions

Noun
  1. 1
    Something that or someone who spoils an otherwise enjoyable event. idiomatic, slang
  2. 2
    A person who attends a social event and occupies their time with unsociable activities. idiomatic, slang

Etymology

From buzz (“feeling of energy or excitement”) + kill.

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