def
1 of 3abbreviation
1
defendant; defense
2
deferred
3
defined; definition
4
definite; definitely
def
2 of 3adverb
ˈdef 
slang
: definitely
Oh, I'll def be there!
If the Ed Westwick tidbit wasn't enough to get you up to the roof, the luxurious pool def will.
Katie Buckleitner
Katie Buckleitnerdef
3 of 3adjective
deffer; deffest
slang
: cool sense 7
… but just about everything else you need is supplied in Rap Trax, a do-it-yourself kit of def beats and prime rhythms. Shann Dix
Shann Dix
Synonyms
Adjective
- au courant
- cool [slang]
- downtown
- groovy
- hep
- hip
- in
- mod
- now
- trendy
- turned-on
- with-it
See all Synonyms & Antonyms 
Example Sentences
Adjective of the rappers on the scene, he was definitely the most def
Word History
Etymology
Adverb
short for definitely
Adjective
probably alteration of death (from the phrase to death excessively)
First Known Use
Adverb
circa 1942, in the meaning defined above
Adjective
1979, in the meaning defined above
Phrases Containing def
Medical Definition
def
abbreviation
1
defecation
2
deficient
3
definite
Legal Definition
def.
abbreviation
defendant
def
adjective
as in now
keenly aware of and responsive to the latest developments especially in fashion and entertainment of the rappers on the scene, he was definitely the most def Synonyms & Similar Words
Relevance
- now
- downtown
- hip
- mod
- stylish
- hep
- groovy
- smart
- chic
- cool
- fashionable
- trendy
- au courant
- in
- with-it
- turned-on
- a la mode
- voguish
- modish
- sharp
- à la mode
- snappy
Antonyms & Near Antonyms
- out
- uncool
- nerdy
- unhip
- geeky
- untrendy
- nerdish
- unstylish
- unfashionable
- dowdy
- styleless