N.F.I’d Posted in N Best definition N.F.I’d Not Fucking Invited. A term used when you have not been invited to a party or social occasion You coming to Matt’s tonight? Nope. N.F.I’d mate How satisfied are you with the definition? Looking for N.F.I’d meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 58 times.