in doubt
Showing uncertainty
Use in doubt when something is uncertain or unclear.
The team's future remains in doubt.
Her diagnosis is still in doubt.
In doubt or without doubt?
In doubt means uncertain. Without doubt means certainly. Of doubt is not a standard combination for this meaning.
Quick answer
Common combinations with doubt
Use in doubt to describe uncertainty and without doubt to express certainty. Of doubt is generally not idiomatic after doubt in this meaning.
The result is still in doubt.
without doubt, she was the best candidate.
His loyalty was never in doubt.
without doubt, she was the best candidate.
His loyalty was never in doubt.
Choose the pattern by meaning
These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.
without doubt
Expressing certainty
Use without doubt to mean certainly or unquestionably.
without doubt, this is the safer option.
He is without doubt the most experienced member.
beyond doubt
Emphasising strong certainty
Beyond doubt is a stronger formal expression meaning unquestionably.
Her talent is beyond doubt.
The cause of the fire was beyond doubt accidental.
See the difference in context
The same subject can take different constructions because each sentence answers a different question.
Construction
Example
Meaning
in doubt
The contract is still in doubt.
uncertain or not yet decided
without doubt
Without doubt, the plan succeeded.
certainly; unquestionably
of doubt
Not standard: He was of doubt about the result.
generally not idiomatic for uncertainty
beyond doubt
The evidence is beyond doubt.
completely certain
Common mistakes
Some combinations appear in real text but do not mean what learners often assume.
Using of doubt for uncertainty
English normally uses in doubt, not of doubt, to describe uncertainty.
✕ The outcome is of doubt. ✓ The outcome is in doubt.Confusing without doubt and no doubt
Without doubt expresses certainty more strongly than no doubt.
✓ Without doubt, she will qualify.Missing the article in fixed expressions
Use the full fixed phrase in doubt.
✕ The decision is doubt. ✓ The decision is in doubt.Quick practice
Choose the expression that matches the intended meaning.
1. The final score is still ___ .
2. ___, this was the right decision.
3. Which option is generally nonstandard?
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Frequently asked questions
Can I say of doubt?
Usually no. English normally uses in doubt, beyond doubt, or without doubt instead.
What does in doubt mean?
It means uncertain, undecided, or not yet clear.
Is without doubt formal?
It is common in both formal and neutral English to express strong certainty.
Related preposition guides
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