Top definition
Treating serious issues or situations with deliberately inappropriate and/or offensive humour. This is often referred to as dark humour.
Johny bought his war veteran uncle Dan a pair of fancy socks for his birthday, which would not have been facetious if Dan still had his legs.
by Who ate all the cheese March 26, 2018
Get a facetious mug for your barber Trump.
Aug 11 Word of the Day
A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.
"My boyfriend has a total case of brain worms. He told me the cat was bugged so the Feds could listen in on us having sex..."

or

"You totally stumbled over that entire sentence. Can't speak English all of a sudden? What, do you have brain worms?"
by _Jez_ October 03, 2009
Get a brain worms mug for your girlfriend Riley.
2
To make an attempt at being funny, while being sarcastic at the same time.
Jacky was being facetious when she said, "Yes, let's all go to Iraq for my birthday party!"
by Nikki P. September 06, 2004
Get a facetious mug for your bunkmate José.
3
Along with abstemious, facetious is one of two words in the English language containing all five vowels in alphabetical order.
by gork March 26, 2003
Get a facetious mug for your girlfriend Helena.
4
The act of being filipant in a serious situation
At miss heath's funeral mr Powell made a facetious joke about her death
by Matthew matterson April 17, 2016
Get a Facetious mug for your brother-in-law Jerry.
5
Stop being so facetious and tell me what you're going to do about the problem!
by neveruse November 10, 2009
Get a facetious mug for your dad Georges.
6
a word used exclusively by people who take themselves too seriously, while failing to convince people otherwise
John's attempt at making a joke crashed and burned. In an effort to save face and appear relatable, he announced to the room that he was merely being facetious. But not before first adjusting his monocle and tightening his ascott.
by dafed April 09, 2013
Get a facetious mug for your friend Günter.