| ungebührlich | ill-mannered |
| ungefährlich | safe dangerless |
| gebührlich | proper |
| ungemütlich | uncomfortable |
| ungeheuerlich | monstrous |
| ungewöhnlich | unusual unwontedly |
| unehrlich | dishonest crooked dodgy reserved unfrank withdrawn |
| ungebräuchlich | unusual uncommon |
| ungesetzlich | unlawful |
| unglaublich | incredible unbelievable |
| unglücklich | unhappy |
| angeblich | alleged putative supposedly |
| entbehrlich | dispensable |
| gefährlich | dangerous perilous risky hazardous |
| unentbehrlich | indispensable |
| neuerlich | anew |
| unleserlich | illegible |
| unnatürlich | artificial |
| unweigerlich | inevitable |
| undeutlich | indistinct vague hazy |