I can't put my finger on it

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19 January 2026

I can't put my finger on it

We use this expression to say that we can't explain or fully understand something.

Written: No

Spoken: Yes

Formal: No

Informal: Yes

Example 1

She looks different, doesn't she?

Yes, I can't put my finger on it. Has she changed her hair?

Example 2

Why don't you like Sam?

I don't know. I can't put my finger on it. I just feel we can't trust him.

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