An depressing person. One whose presence tends to darken others' moods, consistently.
We were having a great time, until the buzzkiller arrived and started whining about his dating troubles.
by tlc August 27, 2003
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(noun) An event, occurrence, situation, and/or more oftentimes a person(s) that bring about unwanted and undesirable times. A buzzkill is to be avoided at all costs.
The evening was going along great. Everyone was having a good time until Betsy's obnoxious ass showed up. Betsy is such a buzzkill, her negative energy just brought everyone down and it wasn't too very long after she arrived, uninvited, that the peaceful and jovial get together soon dispersed.
by Nikki Stixx March 01, 2020
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Something that spoils or ruins an otherwise enjoyable event, esp. when in relation to ruining a drunken or drug-induced high.
We were having a great time at the party until Jim puked all over the floor. That was a major buzzkill.

I was jerking off and then my dad walked in, god what a buzzkill.
by Bart Wilkins March 25, 2003
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Buzzkill (n. or v.trans.)
1. Buzzkill, anything that takes the edge off your fluff, a downer, something that ruins your good mood; a killjoy.
2. (verb) to selectively and deliberately bring down someone's mood by actions that are designed to irritate, annoy or downright upset a person.
Lois had a particular skill as a mother. When any of her children came home, faces beaming, eyes aglow with a report of good behavior at school, having caught a large fish or having really righteously beaten up the nerdy kid next door, she'd have just the right buzzkill to bring them back to reality. Later in life, she wondered why the kids never called, but only infrequently--she was not of an introspective nature, by and large.
by Luigi the ORIGINAL December 28, 2005
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Something that happens that takes a person out of a good mood and into a bad one like sadness or anger.
We where having a good time at the barbecue until Tonisha told everyone how she had three abortions. What a major buzzkill. Everyone went home soon afterward.
by Tomahhtoe February 13, 2009
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Someone who frequently ruins the good mood of a person/group of people.
Stretch is such a buzzkill!
by Steve103 October 20, 2008
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