| Untermenü | submenu |
| Untermenge | subset |
| Unterdeck | lower deck |
| Unterton | subharmonic |
| Unterwerk | substation |
| unterer | lower |
| untertan | subject |
| Untertan | subject |
| Unterbau | foundation |
| Untergang | downfall sinking decline |
| Unterhemd | undershirt |
| Unterleib | abdomen alvus |
| Unterling | underling |
| Untermensch | subhuman |
| Unterwelt | underworld nether world netherworld |
| unterwegs | on the way on the road |
| untreu | unfaithful disloyal untrue |
| enterben | disinherit |
| Runterweg | descent |
| Unterbühne | mezzanine |