A "Gareth" is defined as a short unit of measurement.

Scottish slang used to describe a small or short object or distance.

To "Gareth"

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

Derived from the Welsh footballer Gareth "Bale"

Effectively another word for "bail"

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.

Gareth is a fun guy.

straight up cunt

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.

A wanker with a huge ego to make up for his smaller...problems.