| zweifelhaft | doubtful dubious |
| unzweifelhaft | indubitable |
| zweifelhafte Ehre | dubious honor |
| zwergenhaft | dwarf |
| Geiselhaft | captivity as a hostage detention as a hostage hostagity |
| Zweifeln | dubitation |
| zweifeln | doubt |
| zweifelnd | doubtful |
| Zweifel | doubt |
| Zweifelsfall | case of doubt |
| zweifellos | undoubtedly no doubt doubtless doubtlessly certainly indubitable |
| engelhaft | angelic |
| flegelhaft | scurrilous |
| zirkelhaft | circular |
| Einzelhaft | solitary confinement |
| ekelhaft | disgustful feculent misbegotten |
| frevelhaft | reprehensible |
| nebelhaft | foggy |
| wechselhaft | changeable |
| zeichenhaft | iconic |