What does "uhm" mean?

I could mean 'yes' ('uh-huh'), it could mean 'no' ('uh-uh'), it could mean 'I'm listening' ('uh-huh'), it could mean 'what?' ('huh?'), it could mean 'I'm pausing because I don't know what to say, but I want to keep speaking' ('umm').

All are common, and it is difficult to know which utterance you are talking about without any context.

I see the word "uhm" http://www.urbandictionary.com/define.php?term=uhm. But it seems that the author is not serious. By the way, the spelling is un-English, isn't it?

Do not rely upon the Urban Dictionary for any definitions. 'Um' is not a word; it is merely the transcription of a sound, so there is no spelling rule.

Thank you, Mister Micawber .

It most often is what we cause an "articulated pause" -- that is, the speaker stops for a second or two but keeps on making a sound, usually to indicate that he is not through speaking. I have a linguist friend who has made a study of the most common articulated pauses in various languages and has come up with some interesting differences.

Ya I don’t know what is uhm means but I’ll search it up at least???? I came back from searching it up I still don’t really get it!!!??????????????????????????????

It means umbrella heid man. He’s *** brilliant. You should see him if you get the chance.

It’s true, ah tell ye, umbrella heid man is an icon. Watch this space