| unfehlbar | infallible unfailing unerring |
| Unfehlbarkeit | infallibility |
| fehlbar | fallible criminal guilty liable sickly |
| unwählbar | unelectable |
| unzählbar | uncountable |
| unheilbar | incurable irremediable irretrievable terminally |
| unteilbar | indivisible |
| unfaßbar | abstruse |
| unfassbar | inconceivable incomprehensible unfathomable incredible unbelievable |
| anfechtbar | contestable disputable |
| erfühlbar | tangible |
| unbezahlbar | priceless |
| fühlbar | palpable noticeable perceptible sensible |
| ansehbar | viewable |
| undenkbar | unthinkable |
| unessbar | inedible |
| unmessbar | immeasurable |
| unmeßbar | immeasurable |
| annehmbar | acceptable |
| unbeugbar | indeclinable |