The word HMM is usually used in chats and don't have a definition. HMM generally means that the person is thinking about something you said or asked. ... hmm can mean that the person totally agrees with your message and it's a kind of “yes”.

What does Hmmm mean from a girl?

It just means a big no. She doesn't want to meet you neither hang out with or even talk to you. Hmm is just her gentle ways of saying that you should probably not put in too much efforts for her.

Is hmm good or bad?

Hmm.” Hmm can also signal dissatisfaction or disagreement, often as a curt, low-pitched hm: “Hm. Yeah right. Like you really mean it.” Sometimes, hmm just acts as a place-holder or fills a pause in a conversation: “It's been great talking with you. Well, hmm, guess I should be going, though.”