def
/dɛf/
adjective
- Excellent, cool, or impressive (slang).
- He wore a def outfit to the concert last night.
- The party was def — everyone had a great time.
- That new song is totally def!
adverb
- Short for 'definitely'; certainly or without doubt (informal).
- She def knows the answer to that question.
- I def want to go to the beach this weekend.
- We are def going to win the game tonight.
Synonyms