| unflätig | foul |
| unfertig | crude |
| Unflat | ordure |
| unfähig | incapable incompetent unable |
| untätig | idle |
| unblutig | bloodless |
| unförmig | musclebound |
| künftig | future upcoming forthcoming |
| unfair | unfair |
| zünftig | able decent |
| Inflation | inflation |
| unartig | mischievous |
| unstetig | discontinuous |
| ungiftig | atoxic non-toxic non-venomous nonpoisonous nontoxic nonvenomous |
| ungültig | invalid nonvalid |
| unnötig | unnecessary |
| Fünfling | quintuplet |
| Unfug | devilry mischief |
| fünfwertig | pentavalent |
| unfein | vulgar |