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hil-ar-i-a pronounced (hill-lair-ee-uh)
- noun

1. Archaic: amusing or humourous air, as from that recently passed through by roflcopters, roflplanes or by persons wearing lollerskates etc…

Etymology: from the former notion that it was caused by the air that is or was recently, within close proximity of such humourous objects. hil aria, funny air: see hilarious air

2. Pathology: an infectious laughter, generally prolonged and uncontrollable, caused by yet undefined, but extremely funny and boisterously joyous microscopic animals that occupy red blold cells, transmitted to humans by mosquitlols (see also: lolsquito). It is characterised mainly by rofling, loling or where one ltao (see: lmao) or any other variant of these symptoms. Hilaria is typically associated with urinary and/or fecal incontinence (see: lmaopmpappa)
Person 1: OMG what is wrong with Steveo? He's can't stop laughing, he's wet himself and it smells like he may have soiled himself also...

Person 2: That's hilariously disgusting. He must have Hilaria...

Person 3: Yeah, he does...he got bitten by a mosquitlol.
Hilaria by alpinestar84 January 14, 2009
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state or quality of hillariousness
The hilarity of Fred's situation was near impossible not to make you cry with laughter.

"The hilaria of his statement made it nearly impossible for Karen not to burst laughing."
hilaria by Victor Van Styn December 28, 2005

hilarified

when someone says something and shocking funny to you. Maybe the result of a dirty joke.
hahahaha, im hilarified!
hilarified by dev October 26, 2004

hilariei 

That is more than hilarious that is hilariei.
hilariei by stinkomaximus July 13, 2012
When something really hilarious happens, it leaves you in the state of hilaria.
When Jake tried to light his fart on fire and shit on his hand instead, I was in a state of hilaria for at least three hours.
Hilaria by DarthXanax April 27, 2017
Someone who lies about their true identity and makes up stories for attention. An Hilaria is known for taking credit for things they didn’t do, such as giving birth to six kids and being from Spain. Hilarias are known to be a particularly vexing problem of the 21st century because their grift often goes undiscovered for many years, allowing Hilarias to profit from their lies.
I don’t believe anything that woman says — she’s a total Hilaria!
Hilaria by MyrnaMinkoff July 3, 2022

hilaribibble

Funny, and yet ridiculous. A great word to lighten ANY situation.
'My mother died last night.'
'That's hilaribibble!'
'Ho ho ho, ha ha ha!'