| Untergruppe | subgroup |
| Untergrenze | lower limit |
| Untergrund | bedrock (geol.) subfloor subgrade (constr., tech., geol.) subsoil substrate substratum base basis footing ground base coat (paint etc.) base material surface undercoat (paint etc.) underground |
| Unterlippe | lower lip |
| Altersgruppe | age group |
| Kupfergruppe | copper group |
| Künstlergruppe | art group |
| Opfergruppe | victim group |
| Inselgruppe | archipelago island group |
| Unterbühne | mezzanine |
| Unterdrücker | oppressor |
| unterdrucken | hold down |
| unterdrücken | oppress stifle suppress blanket bottle up smother subdue |
| unterdrückt | downtrodden |
| untergraben | subvert undermine |
| Unterdruck | depression low pressure partial vacuum underpressure |
| Untergebene | subordinate servant |
| unterrühren | stir mix in |
| Entengrütze | duckweed |
| Interrupt | interrupt |