| untereinander | one under the other among ourselves / themselves |
| hintereinander | at a stretch |
| Unterzeichner | signatory |
| unterernähren | underfeed |
| Unterhändler | mediator negotiator transactor |
| unterbinden | stop |
| füreinander | each other one another |
| beieinander | abreast |
| nacheinander | consecutively |
| nebeneinander | side-by-side |
| aneinander | each other |
| miteinander | together with each other |
| Unterhalter | entertainer |
| Unterstand | cabana refuge |
| Unterzeichnen | subscription |
| unterzeichnen | sign |
| unter Wasser | underwater |
| Unterfangen | undertaking |
| Unterfranken | Lower Franconia |
| Untergebener | subordinate underling |