| Unterfamilie | subfamily |
| Überfamilie | superfamily |
| Unterzeile | subheadline |
| Paterfamilias | paterfamilias |
| Kernfamilie | nuclear family |
| Unterhalter | entertainer |
| Untermenge | subset |
| Untertanin | subject |
| Unterfangen | undertaking |
| Unterhalt | alimony upkeep |
| Unterhändler | mediator negotiator transactor |
| Unterlage | base pad underlay document paper root-stock |
| Unterlippe | lower lip |
| Unteroffizier | junior officer non-commissioned officer noncommissioned officer |
| Unterseite | bottom underneath underpart underside subpage |
| Untertasse | saucer |
| Unterwäsche | underwear underclothes underclothing undergarments |
| Unterzahl | minority |
| unterfliegen | fly below fly underneath |
| untergärig | bottom-fermented |