| Zweifelsfall | case of doubt |
| zweiter Fall | genitive |
| zweifelsfrei | doubtless |
| zweifelhaft | doubtful dubious |
| zweifelsohne | undoubtedly unquestionably |
| Zeilenfall | justification |
| Zweiersofa | love seat |
| Zweifeln | dubitation |
| zweifeln | doubt |
| zweifelnd | doubtful |
| zweite Wahl | second |
| Zweifel | doubt |
| zweieinhalb | two and a half |
| zweifellos | undoubtedly no doubt doubtless doubtlessly certainly indubitable |
| Ereignisfall | incident |
| Wesfall | genitive case |
| keinesfalls | no way |
| Wessenfall | genitive |
| Einzelfall | isolated case individual case |
| Wessen-Fall | genitive case |