I don't know the exact meaning of these sentences.

  1. I trust you.
  2. I trust in you.
  3. I trust on you.

I have heard all these sentences. But usually use the 2nd one whenever I need to say it to someone.

3 Answers 3


According to LDOCE, Trust in is a phrasal verb which is formal and means to believe in someone or something as in

We trust in God.

Trust means to believe that someone is honest or will not do anything bad or wrong as in

I just don’t trust him.

When you trust someone for example you tell them your secrets.

However, trust can mean the same as trust in in the sense to be sure that something is correct or right as in

I trust his judgement completely.

About trust on, I'm not sure I've even heard of such collocation. I think it doesn't exist at all at least in dictionaries.

  • Thanks you Azad for the very well explanation. Now I know that the 3rd one is completely wrong and how to use the 1st one and the 2nd one.
    – Sarah
    Mar 28, 2016 at 14:42
  • Glad you found it useful 😊
    – Yuri
    Mar 28, 2016 at 14:46
  • No problem. Keep up the good work! Mar 28, 2016 at 15:35
  • I took the liberty of adding the URL to your source. (Providing links is recommended.) I hope you don't mind. ;-) Mar 28, 2016 at 15:38
  • Not at all, so kind of you thanks. Though I used the app on my cellphone so wasn't really up for mentioning the publication info. The link's gonna be quite handy from now on 😉
    – Yuri
    Mar 28, 2016 at 18:08

You can trust ON that.

Meaning you can put your trust on that.

So the "on" does not refer to trust but to "that". On that.

  • Do you have a reference for that? The previous answer seems to disagree with you.
    – mdewey
    Mar 18, 2021 at 11:21

To my best of understanding, 'trust on' can be said to be a continuous act of trusting in something or somebody.

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