1. a word that actually exists.

2. an extremely unpleasant thing

3. something that annoyed you because it took too long

4. a way to describe anything that didn't go your way
1. Kit: You use the word hellacious? Sweet.

2. That was a hellacious thing.

3. That wait for a sno-cone was hellacious

4. Today was a hellacious day at work.
by um... not Bridget... May 9, 2005
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1) referring to an article of hell
3) possessing outrageous qualities
1) This demon wing is hellacious.
2) What a hellacious day!
by Jack B. Nimble December 17, 2002
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A shit when it feels almost as if your shitting out a broken glass and tobassco sauce cocktail. The burning remains for up to 10 mins afterwards.
*clinching asshole* boys...that was one hellacious plop
by JamesHC September 5, 2006
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Essentially means "extremely cool", but is typically used ironically, to emphasize that something is precisely the opposite.
Person: *walks into the room wearing bunny slippers* "Dude, check out my hellaciously rad slippers!"
by RoboHippo September 13, 2010
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Someone who follows and does vengeance,deception,revenge,and hate often referred to as the act of de dark religion 👉👉👉👉👿👿👿👿
Some fuckas act in a hellacious way!!!💥💥💥💥
by Royce De 5 nine November 12, 2019
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