trust someone's word
/trʌst ˈsʌmwʌnz wɜːrd/
Meaning
This phrase means to believe that what someone says is true and that they will keep their promises, without requiring proof or written contracts. It is built on mutual respect, honesty, and a history of reliability between people.
Examples
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He has never lied to me, so I fully trust his word.
He has never lied to me, so I fully trust his word.
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In this business, you have to be able to trust your partner's word.
In this business, you have to be able to trust your partner's word.
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I can't trust her word anymore after she broke her promise last week.
I can't trust her word anymore after she broke her promise last week.
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They didn't sign a contract; they just trusted each other's word.
They didn't sign a contract; they just trusted each other's word.
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If you want people to trust your word, you must always do what you say you will do.
If you want people to trust your word, you must always do what you say you will do.
Common Mistakes
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✗ I trust his words.
✓ I trust his word.
In this idiom, the noun 'word' is singular. Using the plural 'words' changes the meaning to the literal things they spoke, rather than their promise or integrity.
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✗ You can trust on my word.
✓ You can trust my word.
The verb 'trust' is transitive here and does not need the preposition 'on'.
Related Expressions
Practice
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In a healthy relationship, you should be able to ___ without constant doubts.
💡 Believe what your partner promises.
Show answer
trust someone's word
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To ___ means to believe their promise without needing a written contract.
💡 Have faith in someone's honesty.
Show answer
trust someone's word