What does MHMM mean?
MHMM (pronounced as “Um-hermm” or “Um-humm”) is an interjection commonly used in English to express agreement (i.e., to say “Yes”).
What does Hummm mean?
Hmm is defined as a sound you make to express hesitation or when you are thinking about something or don’t know exactly what to say. An example of hmm is what you say when someone asks you a tough question and you pause for a second before answering.