Doubt vs I don't trust them here vs Suspect

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

Doubt

Top 1,000 (very common)B1noun

I don't trust them here

Top 2,000 (common)

Suspect

Top 2,000 (common)B2verb
Most common: Doubt
 DoubtI don't trust them hereSuspect
Pronunciation🇬🇧 //daʊt//🇺🇸 //daʊt//🇬🇧 //aɪ dəʊnt trʌst ðɛm hɪə//🇺🇸 //aɪ doʊnt trʌst ðɛm hɪr//🇬🇧 /["/səˈspekt/","/səˈspekts/","/səˈspektɪd/","/səˈspektɪŋ/"]/🇺🇸 /["/səˈspekt/","/səˈspekts/","/səˈspektɪd/","/səˈspektɪŋ/"]/
MeaningA feeling of not being sure about something.I think they are not honest with me.to think someone might be guilty or bad
ExampleHe expressed doubt about the accuracy of the report.I don't trust them here because they've lied before.The detective began to suspect that the alibi was fabricated.
RegisterNeutralNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)Top 2,000 (common)
CEFR levelB1-B2
Part of speechnounverb
Collocationsexpress doubt, have doubt, cast doubt, doubt someone's intentionstrust someone, trust issues, trust no one, trust in, trust mestrongly, rather, rightly, begin to, have reason to, have reasons to, be widely suspected, rightly, wrongly, of, have grounds for suspecting somebody/​something, have grounds to suspect somebody/​something, have reason to suspect somebody/​something
Antonymscertainty, confidence, belief-trust, believe, assure
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.Translating 'trust' directly into another language without considering context., Confusing 'trust' with 'believe' in certain contexts.Confused with 'suspected' - remember to use 'suspect' for present tense., Using 'suspect' without an object - always have something or someone you suspect., Mispronouncing it as 'suspect' like the noun form, when it is used as a verb.
Usage notesUsed when uncertain or unsure. Common in both spoken and written contexts. Avoid in very formal settings.Used to express doubt or uncertainty about someone's honesty or reliability. Suitable for conversations involving feelings of distrust.Used when you have a feeling that someone is responsible for something negative. Not typically used for casual conversation unless referring to criminals. In formal contexts, it may require clarification.

See it in real clips

Doubt
I don't trust them here
Suspect

Frequently asked questions: Doubt vs I don't trust them here vs Suspect

What's the difference between Doubt, I don't trust them here, and Suspect?

Doubt: A feeling of not being sure about something. I don't trust them here: I think they are not honest with me. Suspect: to think someone might be guilty or bad

Which is more common: Doubt, I don't trust them here, and Suspect?

Doubt is the most common in everyday English.

Which is more advanced: Doubt, I don't trust them here, and Suspect?

Suspect is the highest level, at B2, on the CEFR scale.

Can you show an example of each?

Doubt: He expressed doubt about the accuracy of the report. I don't trust them here: I don't trust them here because they've lied before. Suspect: The detective began to suspect that the alibi was fabricated.

Can I use Doubt, I don't trust them here, and Suspect interchangeably?

Not always. Doubt, I don't trust them here, and Suspect 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.

Related comparisons