DNF

Short definition from Wiktionary

Verb

1. 1
   Initialism of did not finish.
2. 2
   Initialism of did not find.
3. 3
   Initialism of do not follow.
4. 4
   To fail to finish, as a sporting event or a piece of media.

Noun

1. 1
   Initialism of disjunctive normal form.

Proper noun

1. 1
   Initialism of Digital National Framework.