| Unterzug | girder |
| Güterzug | cargo train freighttrain wagon train |
| Überzug | coat |
| Runterweg | descent |
| Unterton | subharmonic |
| unterer | lower |
| untertan | subject |
| Untertan | subject |
| Unterarm | forearm |
| Unterart | subspecies |
| Unterbau | foundation |
| Untergang | downfall sinking decline |
| Unterhaus | lower chamber lower house House of Commons |
| Unterlage | base pad underlay document paper root-stock |
| Unterlauf | lower reaches |
| Unterling | underling |
| Unterzahl | minority |
| Untreue | unfaithfulness disloyalty embezzlement infidelity |
| unter- | under- |
| unter | below under among |