| UP | the class occupying the highest position in the social hierarchy |
|---|---|
| UP | the class occupying the highest position in the social hierarchy |
| UP | a higher deck |
| UP | position of advantage and control |
| UP | the upper jawbone in vertebrates |
| UP | the upper jawbone in vertebrates |
| UP | the limit on the upper (or northernmost) side of something |
| UP | the largest possible quantity |
| UP | the upper part of the mantle |
| UP | the peninsula between Lake Superior and Lake Michigan that forms the northwestern part of Michigan |
| UP | infection of the upper respiratory tract |
| UP | the nose and throat and trachea |