Doubt vs Suspicion

When to use each in English, with meaning, register, and examples.

Doubt

Top 1,000 (very common)B1noun

Suspicion

Top 3,000 (common)C1noun
Most common: Doubt
 DoubtSuspicion
Pronunciation🇬🇧 //daʊt//🇺🇸 //daʊt//🇬🇧 /["/səˈspɪʃn/"]/🇺🇸 /["/səˈspɪʃn/"]/
MeaningA feeling of not being sure about something.A feeling that something is wrong or not true.
ExampleHe expressed doubt about the accuracy of the report.She felt a strong suspicion that someone was hiding the truth.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 3,000 (common)
CEFR levelB1C1
Part of speechnounnoun
Collocationsexpress doubt, have doubt, cast doubt, doubt someone's intentionsstrong, considerable, deep, degree, level, entertain, harbour/​harbor, have, arise, exist, linger, above suspicion, beyond suspicion, on suspicion of, the finger of suspicion, grounds for suspicion, an object of suspicion, strong, considerable, deep, degree, level, entertain, harbour/​harbor, have, arise, exist, linger, above suspicion, beyond suspicion, on suspicion of, the finger of suspicion, grounds for suspicion, an object of suspicion, strong, considerable, deep, degree, level, entertain, harbour/​harbor, have, arise, exist, linger, above suspicion, beyond suspicion, on suspicion of, the finger of suspicion, grounds for suspicion, an object of suspicion
Antonymscertainty, confidence, belieftrust, confidence
Common mistakesConfused with 'suspicion' - 'doubt' refers to uncertainty, not mistrust., Using 'doubt' in affirmative sentences instead of negatives., Misunderstanding the difference between 'doubt' and 'question' as they aren't always interchangeable.Confused with 'suspect' which is a verb., Using 'suspicion' as a countable noun incorrectly., Mixing it up with 'distrust', which has a different meaning.
Usage notesUsed when uncertain or unsure. Common in both spoken and written contexts. Avoid in very formal settings.Use 'suspicion' when you think something might be bad or wrong, often without proof. It's appropriate in serious contexts but less suitable in casual conversation.

Frequently asked questions: Doubt vs Suspicion

What's the difference between Doubt and Suspicion?

Doubt: A feeling of not being sure about something. Suspicion: A feeling that something is wrong or not true.

Which is more common: Doubt and Suspicion?

Doubt is the most common in everyday English.

Are Doubt and Suspicion the same CEFR level?

Doubt: B1, Suspicion: C1 on the CEFR scale.

Can I use Doubt and Suspicion interchangeably?

Not always. Doubt and Suspicion are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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