| Abbreviation | Definition |
|---|---|
| FAB | FABulous |
| FAI | Forget About It |
| FAO | For Attention Of .... |
| fax | facsimile automated xerox |
| FB | Firebrand |
| FB | Followed By .... |
| FBM | Fine By Me |
| FBO | For the Benefit Of .... |
| FCS | For Christ's Sake! |
| FE | For Everyone |
| FEAE | For Ever And Ever |
| FEAR | Forget Everything And Run |
| FF | fast-forward |
| FFR | For Future Reference |
| FIFY | Fixed It For You |
| FKI | For your Kind Information |
| FMAU | Fix my Auto Correct |
| FMI | Find My Iphone |
| FMITB | F*** Me In The B*** |
| FMLTWIA | F*** Me Like The Whore I Am |