hmm

interjection
UK /həm/
US /həm/

A sound you make when you are thinking or not sure.

Hmm, I think my keys are in the kitchen.


OTHER MEANINGS

2. A sound that shows you are thinking about what someone said.

Hmm, that's an interesting idea.

3. A sound that shows you are not sure or you disagree a little.

Hmm, I don't know about that.

4. A sound you make when you are listening and want someone to keep talking.

Hmm, go on, I'm listening.