| unumkehrbar | irreversible |
| unüberhörbar | unmistakable |
| unausführbar | impracticable |
| unerkennbar | unrecognizable |
| unmessbar | immeasurable |
| unmeßbar | immeasurable |
| unabsehbar | incommensurable unforeseeable |
| unfehlbar | infallible unfailing unerring |
| Umkehrung | converse |
| umkehren | return |
| Heimkehrer | prodigal son |
| ehrbar | reputable |
| ausfahrbar | extendable |
| ausführbar | executable |
| hämmerbar | malleable |
| änderbar | changeable |
| Unterbau | foundation |
| induzierbar | inducible |
| konsumierbar | consumable |
| unbeirrbar | undeviating |