The word 'Gareth' is usually used to insult people (1) in the Grimsby area of England. Created originally by a small group of friends, this saying has become a popular part of the culture. It generally means 'Dumb person', but can be used to describe inanimate objects too, such as a MAC Computer when it fucks up (2). It is also laughed upon when uttered (3) .
(1) "Haha! Your such a Gareth!"
(2) "For fuck sake! These MAC's are such Gareths!"
(3) "Gareth!" - "Haha!"
by 2006 1st Year Games Design December 6, 2006
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Gareth also known as Gayeth, is a sassy individual that just loves being sassy. When not being sassy, Gareth's like to play the trumpet and spend time with his ladies at ladies night, his quick witted comments and insightful input make him a hit with the ladies, although often not in the way he was hoping, his sassiness often means he's miss understood.
"Hay who's that sassy guy with your friend"

"Ohhhh thats Just Gareth"
by Geek Chic November 26, 2013
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To "Gareth"

The act of bailing on an action, event or person.

Derived from the Welsh footballer Gareth "Bale"

Effectively another word for "bail"
Example 1

Guy 1 - "Yeah nobodies going Steve's anymore"

Guy 2 - "Gareth?"

Guy 1 - "Yeah, screw this I'm Garething"

Example 2

Guy 1 - "Shit man, its the Police"

Guy 2 - "Fuck this, Gareth! Gareth!"
by YouBigGareth April 14, 2013
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Gareth is a fun guy.
This looks like a Gareth.
by Gdawgggggghgg September 9, 2020
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When someone storms out of the room without a reason and with no warning.
He just left without a word. He's clearly garething!
by J.D.House December 2, 2009
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1). The sexy cannibalistic leader of Terminus on AMC's The Walking Dead. He's portrayed by a relatively obscure actor named Andrew J. West.
1). Gareth is the coolest hipster cannibal.
by AliceKettle November 9, 2014
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