| unermüdlich | indefatigable tireless |
| Unermüdlichkeit | tirelessness |
| unermeßlich | immeasurable |
| unermesslich | incommensurable immeasurable incalculable |
| unendlich | infinite |
| unergründlich | impenetrable deep fathomless inscrutable unfathomable unfathomably |
| unerheblich | irrelevant |
| unvermeidlich | foregone |
| vermutlich | probably |
| unredlich | bum dishonest |
| unfreundlich | unfriendly unkind |
| ungemütlich | uncomfortable |
| unverzüglich | immediately immediate prompt at once forthwith |
| unerbittlich | inexorable |
| unerklärlich | inexplicable |
| unerquicklich | fruitless |
| unersetzlich | irreplaceable |
| unersättlich | gluttonous |
| unehelich | bastard illegitimate spurious |
| unehrlich | dishonest crooked dodgy reserved unfrank withdrawn |