People are always asking me what HUM means when I say it. I guess they don't really understand the meaning because I use it all the time and for different reasons. I guess what is obvious to me isn't always obvious to everyone else. So I figured I'd define the many different meanings that HUM can mean.
HUM can be a question. HUM can be a stall while I think of an answer. HUM can mean ok. HUM can mean I agree or disagree. HUM can mean disbelief. HUM can be an acknowledgement. HUM can mean nothing, just a filler.
There are the most common meanings of how I use HUM. There might be a few others as the situating arises but this should answer many peoples questions of what/how I use the word HUM.