Interjection
mmhmm
Elongated form of mhm.
It wasn’t made by a human, but by the Google Assistant, which did an uncannily good job of asking the right questions, pausing in the right places, and even throwing in the odd “mmhmm” for realism. Source: Internet
Ya, mmhmm; no thank you: Charli XCX, “Focus/No Angel” — What fun summertime music Charli XCX hath wrought! Source: Internet