MHM


Meaning of MHM in English

/ əmˈhm; NAmE / exclamation

used to say 'yes', or to show sb that you are listening to them :

'Can I borrow your pen?' 'Mhm.'

'I phoned Alan ... ' 'Mhm.'' ... and he said he's going to come.'

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.