| NAA! |
Not Another Acronym! |
| NAGI |
Not A Good Idea |
| NAHM |
Not A Happy Man |
| NAHW |
Not A Happy Woman |
| NAVY |
Never Again Volunteer Yourself |
| NB |
Nota Bene (note well) |
| NBD |
No Big Deal |
| NBL |
Not Bloody Likely |
| NBTD |
Nothing Better To Do |
| NERD |
National Establishment for Real Dorks |
| NFA |
No Flaming Allowed |
| NFG |
No F---ing Good |
| NFI |
No F---ing Idea |
| NFIAA |
No F---ing Idea At All |
| NFW |
No F---ing Way |
| NFY |
No F--- You |
| NG |
News Group |
| NHOH |
Never Heard Of Him/Her |
| NIAA |
No Idea At All |
| NICBDAT |
Nothing Is Certain But Death And Taxes |
| NIDWTC |
No I Don't Want To Chat |
| NIH |
Not Invented Here |
| NIMBY |
Not In My Back Yard |
| NIMFYE |
Not In My Front Yard Either |
| NINO |
Nothing In |
| NIMTO |
Not In My Term of Office |
| NIT |
Not In Therapy |
| NJTH |
Not Just Thinking Here |
| NLI |
Not Logged In |
| NM |
NeverMind |
| NMFJ |
Not My F---ing Job |
| NMI |
No Middle Initial |
| NN |
Night-Night |
| NOMS |
Not on My System |
| NOPE |
Not On Planet Earth |
| NORWICH |
kNickers Off Ready When I Come Home |
| NOYB |
None Of Your Business |
| NP |
No Problem |
| NPF |
No Problem Found |
| NPLU |
Not People Like Us |
| NQA |
No Questions Asked |
| NQOS |
Not Quite Our Sort |
| NRN |
No Reply Necessary |
| NSS |
No S--- |
| NTG |
Not Too Good |
| NTH |
No Therapy Helpful |
| NTIBOA |
Not That I'm Bitter Or Anything |
| NTIM |
Not That It Matters |
| NTIMM |
Not That It Matters Much |
| NTL |
NeverTheLess / NoneTheLess |
| NUI |
Network User Identification |
| NUNP |
No Users, No Problems |
| NWCDP |
Nothing We Could Do Partner |
| NYM |
New York Minute |
| NYP |
Not Your Problem |
