| unterwegs | on the way on the road |
| Runterweg | descent |
| Unterwerk | substation |
| Unterwelt | underworld nether world netherworld |
| untertags | day daytime during |
| Unterdeck | lower deck |
| Untermenge | subset |
| Unterzug | girder |
| unterer | lower |
| Unterhaus | lower chamber lower house House of Commons |
| Unterhemd | undershirt |
| Unterlage | base pad underlay document paper root-stock |
| Unterleib | abdomen alvus |
| Untermenü | submenu |
| unterlegen | inferior |
| unterweisen | educate |
| Uferweg | towpath |
| unbewegt | emotionless |
| Unterkleid | slip |
| Unterlagen | document |