What's on your mug?

Permutation of "deft". Adroit.

Yo, sir. Those moves are def.

By Bud

UrbanDictionary.com's abbreviation for 'definition'. See the 'new def' link at the top of the page.

I added a new def today. Okay, okay, I DO sound stupid.

By Diggity Monkeez

Certain. First used by Run-DMC. Sort for definate.

Were the best most def.

By Ahmose

abreviation for the word definately, usually used by kids who are either way cool, or way lame. the only way to pull of using the term "def" is to be the first one around to use it. if you're just copying someone, people might think you're lame.

Kara asked if the new guy was cute. Emily repiled, "Oh most def! He's soo hot!"

By Kara

IS short for definitive. Originated in NY, no doubt. or

"#3 on your touch tone, D-E-F spells def" either Tak or Ryu of Styles of Beyond...

By Titanium