A fixed expression meaning 'if one is unsure' or 'if there are doubts.' It introduces a recommended action for an unclear situation.
example
Im Zweifelsfall sollten Sie immer einen Experten zu Rate ziehen.
In case of doubt, you should always consult an expert.
Usage tips
Word composition
The word is made up of 'der Zweifel' (doubt) and 'der Fall' (case), connected with a linking -s. So it literally describes a 'case of doubt.'
EXAMPLE
Bei einem Zweifelsfall entscheidet oft eine kleine Regel.
In a case of doubt, a small rule often decides.
Fixed expression
The most common use is the fixed expression 'im Zweifelsfall' (in case of doubt). If this adverbial phrase is placed at the beginning of the sentence, the verb follows directly after it in position 2.
EXAMPLE
Im Zweifelsfall frage ich lieber noch einmal nach.
In case of doubt, I prefer to ask again.
Context clue
The general idiom is 'im Zweifelsfall' (in case of doubt). If the word is used instead with an article such as 'ein' (a) or 'dieser' (this), it refers to a concrete, specific case of uncertainty.
EXAMPLE
Im Zweifelsfall ist es besser, vorsichtig zu sein.
In case of doubt, it is better to be careful.
Typical verbs
A concrete 'Zweifelsfall' (case of doubt) is often combined with verbs such as 'klären' (to clarify), 'prüfen' (to examine/check), or 'entscheiden' (to decide). The point is to resolve the uncertainty.
EXAMPLE
Wir müssen diesen Zweifelsfall schnell klären, bevor wir weitermachen.
We need to clarify this case of doubt quickly before we continue.
Compare with
near_synonym · confusable
Zweifelsfall vs Zweifel
doubt
'der Zweifel' and 'der Zweifelsfall' both have to do with uncertainty. 'Zweifel' refers more to the feeling or thought that something may not be right or may not be certain. 'Zweifelsfall' refers to a specific situation in which you are unsure and have to decide what to do. The expression 'im Zweifelsfall' (in case of doubt) is especially common. Learners may confuse the words because they come from the same base word. A practical way to remember it: you have 'Zweifel' (doubts), but 'im Zweifelsfall' you act cautiously or ask for clarification.
Zweifelsfall
Im Zweifelsfall rufst du besser beim Arzt an.
In case of doubt, you'd better call the doctor.
Zweifel
Nach dem Gespräch hatte Anna Zweifel, ob ihre Entscheidung richtig war.
After the conversation, Anna had doubts about whether her decision was right.