def

¹

[def]

adverb

Informal.

1. definitely.

   Going to Europe this summer? But def!

def

²

[def]

adjective

1. Slang.,  excellent.

   That hip-hop record is def!

def.

³

abbreviation

1. defective.

2. defendant.

3. defense.

4. deferred.

5. defined.

6. definite.

7. definition.

def.

¹

abbreviation

1. definition

def

²

/ dɛf /

adjective

1. slang,  very good, esp of hip-hop

Word History and Origins

Origin of def¹

By shortening

Origin of def²

An Americanism dating back to 1980–85; of uncertain origin

Word History and Origins

Origin of def¹

C20: perhaps from definitive

Example Sentences

So the majority of the people that I know I met through All Def.

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The credits of the track mention Aubierre Rivaldo Taylor as the songwriter -- a name that only appears online in association with the group Def Beats AI, which is clearly identified as an AI project.

Read more on Barron's

Def Leppard's Vivian Campbell has revealed while performing in certain parts of Northern Ireland during the Troubles he would "shut up" on stage.

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Campbell joined Def Leppard in the early 1990s.

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Though streaming services like Spotify and Apple Music didn’t immediately publish the album’s credits, a press release from Bieber’s label Def Jam said he made “Swag II” with much of the same team behind “Swag,” including Carter Lang, Dylan Wiggins, Dijon, Mk.gee,

Read more on Los Angeles Times