What's the difference?/Believe, trust, think, and suppose: what's the difference?
believetrustthinksupposeOctober 05, 2026

Vastny Languages editorial team

Believe, trust, think, and suppose: what's the difference?

Believe concerns accepting something as true. Trust concerns confidence in someone or something. Think can express an opinion; suppose often signals an assumption or some uncertainty.

Quick answer

Believe concerns accepting something as true. Trust concerns confidence in someone or something. Think can express an opinion; suppose often signals an assumption or some uncertainty.

Quick choice

Which word fits here?

More details

How to choose a word

believe

Use believe for accepting a statement as true: believe what someone says or believe that it is true.

trust

Use trust for confidence in reliability or honesty: trust a friend or trust a method.

think

Use think for an opinion or judgment: I think it will rain.

suppose

Use suppose for an assumption or tentative opinion: I suppose you are right.

Word by word

Base word

believe

Use believe for accepting a statement as true: believe what someone says or believe that it is true.

I believe her story.

Do you believe what he said?

Common phrases
believe someonebelieve a storybelieve what someone saysbelieve that...believe in yourself
Similar word

trust

Use trust for confidence in reliability or honesty: trust a friend or trust a method.

I trust my doctor.

Don’t trust that website with your card details.

Common phrases
trust someonetrust your judgmenttrust someone with a secrettrust a doctortrust the process
Similar word

think

Use think for an opinion or judgment: I think it will rain.

I think we should leave now.

What do you think of the plan?

Common phrases
I think sothink that...what do you thinkthink about itthink it over
Similar word

suppose

Use suppose for an assumption or tentative opinion: I suppose you are right.

I suppose he’s still at work.

I suppose we could take a taxi.

Common phrases
I suppose soI suppose notsuppose that...let’s supposeI suppose we could...

Frequently asked questions

How do I use believe in this comparison?

Use believe for accepting a statement as true: believe what someone says or believe that it is true.

Are these words always interchangeable?

Believe concerns accepting something as true. Trust concerns confidence in someone or something. Think can express an opinion; suppose often signals an assumption or some uncertainty.

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