STFU
| Acronym | Definition |
|---|---|
| STFU | Shut the Freak Up (polite form) |
| STFU | Southern Tenant Farmers' Union |
| STFU | Super Time Force Ultra |
| STFU | Say, Thanks for Understanding |
| STFU | Special Task Force Unit (gaming) |
| STFU | Short-Term Follow-Up (pharmaceutical study) |
| STFU | Stop Tickling Furry Unicorns |
| STFU | Stop Trolling for Unicorns |
| STFU | Star Trek Federation University |
| STFU | Scrawny Two-Faced Underling |
| STFU | Sir, That's Freakin Ugly (polite form) |
| STFU | Samurai Training Finished Unsuccessfully |
| STFU | Show Them Fury Unleashed |
| STFU | Save the Flying Unicorns |