| unabdingbar | indispensable inalienable |
| unabwendbar | inevitable |
| unabweisbar | peremptory |
| unabsehbar | incommensurable unforeseeable |
| unauffindbar | nowhere to be found |
| unbewegbar | inanimate |
| unbesiegbar | invincible |
| unbeugbar | indeclinable |
| undenkbar | unthinkable |
| untrinkbar | undrinkable |
| unbeirrbar | undeviating |
| unbrennbar | incombustible |
| undankbar | ungrateful |
| unsinkbar | unsinkable |
| unabhängig | independent autonomous self-sufficient unattached |
| unantastbar | inviolable untouchable indefeasible |
| abdingen | cede |
| Unding | absurdity |
| unbedingt | unconditional absolute at all events by all means |
| gangbar | passable practicable |