NFI
{{initialism-old|en}}
NFI- (Internet) No Fucking (Freaking) Idea; Expresses lack of knowledge on the subject matter
- No Further Information; Expresses lack of knowledge on the subject matter
- (slang) Not fucking invited.
- 2011, Marina Hyde, The Guardian, 23 Apr 2011:Speaking of the guest list, though, it is most disappointing to find some of the third tier European princelings unable to hide their bitterness at being NFI.