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Originating from M.M. herself at a private all girls school in Sydney, Australia.

Is used wisely across the year 12 community. Mostly as an insult. If you don’t know what FNO means, you probably are one.
Miah aced that business studies test, what an FNO moment.
FNO by clickclackivansback September 20, 2019
Related Words
fnob FNOK fnork Fnog fnoodle fnorgle Fno Monsta fnobob FNOD FNOF
Failure is Not an Option
FNO by Sostrongitswrong December 27, 2016
From Now On
A- Hi I am Mickey!
B- What? Mouse?
A- No.
B- I don't care.. FNO you are Mike! isn't that a better name?
A- Whatever you say sir
FNO by TheFinalChoker October 27, 2009
From now on
I'm keeping myself to myself fno
Fno by Suckmymudda February 26, 2017
When you seriously mean no. If you want some one to get the point: that you're saying f*ck no without using the F word.
Jess: Can I keep the 30 bucks I took from your bag?

Kelley: Fno! Give it back!

(DO NOT USE FNO UNLESS YOU HAVE CONCENT FROM HONORA)
Fno by FNO MAKER June 11, 2016
F ort

N iggas
O nly
Brooklyn blood affiliated gang
Its big FNO hatz k
FNO by SrexyCat March 8, 2023