| UMP | an official at a baseball game |
|---|---|
| UMP | the act of umpiring |
| UMP | mediation by an umpire |
| UMP | an official at a baseball game |
| UMP | be a referee or umpire |
| UMP | innumerable but many |
| UMP | (informal) last in an indefinitely numerous series |
| UMP | (informal) last in an indefinitely numerous series |