uh-huh or um-hum  {adv.},  {informal}
Yes. — Used only in speech or when recording dialogue.
Are you going to the Fair? Uh-huh.
We were in Alaska, um-hum, but that was long before the earthquakes.
When I asked for an appointment, the nurse said, "Um-hum, I have an opening at four o'clock on Friday."
Contrast: HUH-UH.
Categories: adverb informal um-hum

'uh-huh' on video