Learn English – What do you call that tiny sound you make with the nose to indicate that you’re listening

single-word-requests

I'm not very sure if grunt is the right word. I think a grunt is louder and comes mainly from the throat. I'm looking for a word that expresses a softer noise.

Best Answer

I think a possible word for this might be 'hum'.

Hum

to say with closed lips, without articulating words.

Tom agreed with him and gave a hum, "Mm.".