- definition
Collins Concise English Dictionary © HarperCollins Publishers::
def. abbreviation for
def2 /dɛf/USA pronunciation adj.
WordReference Random House Unabridged Dictionary of American English © 2026- [Slang.]excellent:That hip-hop record is def!
def
(def ),USA pronunciation adv. [Informal.]
def1 (def),USA pronunciation adj.
def.,
- Informal Termsdefinitely:Going to Europe this summer? But def!
- by shortening
def1 (def),USA pronunciation adj.
- Slang Termsexcellent:That hip-hop record is def!
- of uncertain origin, originally 1980–85, American.
def.,
- defective.
- defendant.
- defense.
- deferred.
- defined.
- definite.
- definition.
'def.' also found in these entries (note: many are not synonyms or translations):
def
- Fidei Defensor
- A, a
- aa
- Aaron's-beard
- ablation
- ablator
- aboriginal
- abortion
- above
- above the line
- abrupt
- absinthe
- absolute
- absolute ceiling
- absolute complement
- absolute maximum
- absolute minimum
- absorbed dose
- absorptance
- Abury
- Abyssinia
- Académie Goncourt
- academy
- Acadian
- accelerant
- accelerator
- accent
- accent mark
- accept
- acceptance
- accepted masons
- accessory
- acclamation
- accuracy
- accusative
- ace
- acedia
- acetaldol
- acetylsalicylic acid
- Achab
- Achaean
- achromatopsia
- acid
- acid anhydride
- acidic
- acid phosphate
- acolyte
- acorn barnacle
- acridid