def

[ def ]

/ dɛf /

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adverb Informal.

definitely: Going to Europe this summer? But def!

QUIZ

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Question 1 of 7

Fill in the blank: I can’t figure out _____ gave me this gift.

who

whom

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Origin of def

By shortening

Words nearby def

de-escalate, deesis, Deet, deets, de-excite, def, deface, de facto, de facto segregation, defaecate, defalcate

Other definitions for def (2 of 3)

def²

[ def ]

/ dɛf /

adjective

Slang. excellent: That hip-hop record is def!

Origin of def

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

Other definitions for def (3 of 3)

def.

abbreviation

defective.

defendant.

defense.

deferred.

defined.

definite.

definition.

How to use def in a sentence

The best baby monitors offer high-def video, a wide-screen camera for optimal viewing, night vision, and an alert system if your baby is moving too much.
Best baby monitor: How to find the right one for your family|PopSci Commerce Team|January 29, 2021|Popular-Science
The clip will run for three months on its integrated battery and pairs with a best-in-class high-def baby monitor.
The 10 most exceptional personal care products from 2020|By Rachel Feltman and Jordan Blok|December 4, 2020|Popular-Science
Even if the Xbox Series S can’t do true 4K gaming, it does stream movies in native 4K, so you’ll still be able to watch high-def flicks.
Should You Get a PlayStation 5, Xbox Series X, or Xbox Series S? Here's How to Decide|Patrick Lucas Austin|November 12, 2020|Time
Rico Finally Paid: its easy fast money money and im welling to spoil you to def .
The Sex-Trafficking Kings of Facebook|Michael Daly|May 20, 2014|DAILY BEAST

Downstairs, a band called Def Generation, composed mostly of Neville progeny, is killing the hour before the brothers come on.
The Stacks: The Neville Brothers Stake Their Claim as Bards of the Bayou|John Ed Bradley|April 27, 2014|DAILY BEAST
What do Charlie Sheen, Marion Cotillard, and Mos Def have in common?
Celebrity Conspiracy Theorists: Courtney Love Finds Malaysian Flight 370|Amy Zimmerman|March 20, 2014|DAILY BEAST
From The New Yorker to Mos Def, see the best quotes about the beast on Atlantic Avenue.
The 6 Best Quotes About the Barclays Center|William O’Connor|May 16, 2013|DAILY BEAST
He soon garnered a reputation as a stellar stand-up comic, making regular appearances on Def Comedy Jam.
Chris Tucker’s Journey From Tax Problems to ‘Silver Linings Playbook’|Marlow Stern|November 14, 2012|DAILY BEAST
Drowned to def in de hogshead, wid a brick tied erround him.
The Broken Sword|Dennison Worthington
One author of eminence pronounces defile in three syllables, def-i-le.
Dissertation on the English Language|Noah Webster, Jr.
From kina, hina, originated the Icelandic and Swedish pastpositive def.
The Dakotan Languages, and Their Relations to Other Languages|Andrew Woods Williamson
Plane surfaces or planes exist having the property laid down in Def.
Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6|Various
It's jes' waitin' fur de bressin', an' 'pears like 'twould faint ter def ef ye didn't come.
Culm Rock|Glance Gaylord

British Dictionary definitions for def (1 of 2)

def

/ (dɛf) /

adjective

slang very good, esp of hip-hop

Word Origin for def

C20: perhaps from definitive

British Dictionary definitions for def (2 of 2)

def.

abbreviation for

definition

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012