| Abbreviation | Definition |
|---|---|
| MTFO | Move The F*** On |
| MTFY | Make Time For Yourself |
| MTH | mathan |
| MTL | More-Than-Likely |
| MTLY | Me Too Love You |
| MTM | In The Meantime |
| MTM | Much Too Much |
| MTMU | Me Thinks I Messed Up |
| MTO | More Than Once |
| MTP | Make This Public |
| MTR | My Trace Route |
| MTTS | My Time To Shine |
| MTYK | More Than You Know |
| MTYLTT | More Than Yesterday, Less Than Tomorrow |
| MU | Mutual Understanding |
| MU2 | Miss You Too |
| MUA | Make Up Air |
| MUC | Move UP, Charlie |
| MUC | Multi-User Chat |
| MUE | Makeup Enthusiast |