A situation that gets ambiguous or gray.
Did you get that tree diagram in finite mathematics?
No that problem was hairy!
by david faustino April 19, 2012

1. frightening, scary

2. difficult and rough
It looks like things are going to get hairy from now on.
by Light Joker September 4, 2005
Synonym for scary, technical, or difficult.
Snowflake: That was a hairy section of single-track!
Jim: I had the lay on the breaks!
by mikwat June 6, 2004
Undesirable young woman from Glasgow. Commonly (although not necessarily) from the schemes, usually fat and hacket with a perm. Can become worryingly attractive after the consumption of copious amounts of booze, with potentially alarming results.
Tam had a taste for adventure and knew the risks of landing a hairy in the sack during a night out in Paisley
by Craig McLaughlin March 25, 2007
hairy toys that make kids feel funny in a way that they just stop laughing when there hairy toy dies
DUDE that toy is sopooooooooooooooooooooooo hairy im dying in laughter thank you mr.drops
by NotArben June 14, 2019
strong white cider, sold in litre bottles.
'who mate you gannin' to the shop for a bottle of hairy'
by Tyne & Wear posse July 4, 2006
Hairi means kindness. Cleanliness & appearances are very important to the ones who are named Hairi and plus, they're good looking!
by Stan Shady December 27, 2016