| RUD | socially incorrect in behavior |
|---|---|
| RUD | lacking civility or good manners |
| RUD | belonging to an early stage of technical development |
| RUD | (of persons) lacking in refinement or grace |
| RUD | (used especially of commodities) in the natural unprocessed condition |
| RUD | in an impolite manner |
| RUD | a manner that is rude and insulting |
| RUD | a wild or unrefined state |
| RUD | the remains of a body part that was functional at an earlier stage of life |
| RUD | the elementary stages of any subject (usually plural) |
| RUD | being in the earliest stages of development |
| RUD | (biology) not fully developed in mature animals |