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def
1[ def ]
/ dɛf /
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This shows grade level based on the word's complexity.
adverb Informal.
definitely: Going to Europe this summer? But def!
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
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Origin of def
1By 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
2An Americanism dating back to 1980–85; of uncertain origin
Other definitions for def (3 of 3)
def.
abbreviation
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
How to use def in a sentence
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
Medical definitions for def (1 of 2)
def
abbr.
decayed, extraction indicated due to caries, or filled (used for deciduous teeth)
Medical definitions for def (2 of 2)
DEF
abbr.
decayed, extraction indicated due to caries, or filled (used for permanent teeth)
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.