| Unterfangen | undertaking |
| Unterlagen | document |
| Unterfranken | Lower Franconia |
| untersagen | ban |
| unbefangen | at ease |
| Unterlassen | omission |
| unterlassen | stop |
| Untermenge | subset |
| Untertanin | subject |
| unterlaufen | eviscerate |
| Untergang | downfall sinking decline |
| Unterlage | base pad underlay document paper root-stock |
| unterbinden | stop |
| unterbringen | accommodate |
| unterfliegen | fly below fly underneath |
| unterhaken | arm link |
| unterhalten | entertain talk chat propose hold underneath |
| unterlegen | inferior |
| unterliegen | to be beaten to be subject to |
| unterpflügen | plough in plough under |