Conjugations › German › zweifeln

zweifeln

to doubt

German Regular
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The German verb "zweifeln" means "to doubt" in English. It is a regular verb. Below you'll find the complete conjugation tables for "zweifeln" across all 7 tenses.

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Present Simple Past Present Perfect Past Perfect Future Subjunctive I Subjunctive II

How to Conjugate "zweifeln" in the Present Tense

Präsens Actions happening now or regularly
Person English Conjugation
ich I zweifle
du you (informal) zweifelst
er/sie/es he/she/it zweifelt
wir we zweifeln
ihr you all (informal) zweifelt
sie/Sie they/you (formal) zweifeln
Er zweifelt an dem Plan.
He doubts the plan.

How to Conjugate "zweifeln" in the Simple Past Tense

Präteritum Completed actions in the past (written/formal)
Person English Conjugation
ich I zweifelte
du you (informal) zweifeltest
er/sie/es he/she/it zweifelte
wir we zweifelten
ihr you all (informal) zweifeltet
sie/Sie they/you (formal) zweifelten
Er zweifelte an der Lösung gestern.
He doubted the solution yesterday.

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How to Conjugate "zweifeln" in the Present Perfect Tense

Perfekt Completed actions (spoken German)
Person English Conjugation
ich I habe gezweifelt
du you (informal) hast gezweifelt
er/sie/es he/she/it hat gezweifelt
wir we haben gezweifelt
ihr you all (informal) habt gezweifelt
sie/Sie they/you (formal) haben gezweifelt
Er hat an dem Plan gezweifelt.
He has doubted the plan.

How to Conjugate "zweifeln" in the Past Perfect Tense

Plusquamperfekt Actions completed before another past action
Person English Conjugation
ich I hatte gezweifelt
du you (informal) hattest gezweifelt
er/sie/es he/she/it hatte gezweifelt
wir we hatten gezweifelt
ihr you all (informal) hattet gezweifelt
sie/Sie they/you (formal) hatten gezweifelt
Er hatte an dem Erfolg gezweifelt.
He had doubted the success.

How to Conjugate "zweifeln" in the Future Tense

Futur I Actions that will happen
Person English Conjugation
ich I werde zweifeln
du you (informal) wirst zweifeln
er/sie/es he/she/it wird zweifeln
wir we werden zweifeln
ihr you all (informal) werdet zweifeln
sie/Sie they/you (formal) werden zweifeln
Er wird am Erfolg zweifeln.
He will doubt the success.

How to Conjugate "zweifeln" in the Subjunctive I Tense

Konjunktiv I Indirect speech and formal requests
Person English Conjugation
ich I zweifle
du you (informal) zweifelst
er/sie/es he/she/it zweifle
wir we zweifeln
ihr you all (informal) zweifelt
sie/Sie they/you (formal) zweifeln
Er zweifle an der Idee.
He may doubt the idea.

How to Conjugate "zweifeln" in the Subjunctive II Tense

Konjunktiv II Hypothetical situations and polite requests
Person English Conjugation
ich I zweifelte
du you (informal) zweifeltest
er/sie/es he/she/it zweifelte
wir we zweifelten
ihr you all (informal) zweifeltet
sie/Sie they/you (formal) zweifelten
Er zweifelte gern an ihr.
He would like to doubt her.
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Frequently Asked Questions About "zweifeln"

Is "zweifeln" regular or irregular in German?
"Zweifeln" is a regular German verb that follows standard conjugation patterns for its verb group.
What does "zweifeln" mean in English?
The German verb "zweifeln" means "to doubt" in English.
How do you conjugate "zweifeln" in the present tense?
In the present tense (Präsens): ich → zweifle, du → zweifelst, er/sie/es → zweifelt, wir → zweifeln, ihr → zweifelt, sie/Sie → zweifeln.
How many tenses does "zweifeln" have in German?
"Zweifeln" is conjugated across 7 tenses in German: Present, Simple Past, Present Perfect, Past Perfect, Future, Subjunctive I, Subjunctive II.

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