From Middle English, from Old Norse um, umb (“around, about”), from Proto-Germanic umbi (“around”), from Proto-Indo-European ambʰi- (“by, around”). Cognate with Old English ymbe (“around”). More at umbe.
Also, I’ve ignored the recordings—I actually can’t listen to them on this computer—but why would there be a mispronounced pronunciation guide? I mean, wouldn’t people who aren’t US speakers correct it, if they knew better? I’m not a US speaker, and I would.
ETA: apparently “hum” may come from the old English version of this—from which we also get um and hmm. Or something.
Here’s some evidence.
Er: http://en.wiktionary.org/wiki/er#Etymology_1
Uh: http://en.wiktionary.org/wiki/uh#Pronunciation
Erm: http://en.wiktionary.org/wiki/erm
Um: http://en.wiktionary.org/wiki/um#Etymology_1
I think the recordings at those pages are misleading, because they’re all from a US speaker. The phonetic markings are what to look at.
Um … evidence?
pronounced: /ɜː/
etymology: copying the sound people make when hesitating.
pronounced: /ʌː/
No listed etymology, but attached to a list of such sounds from various languages.
pronunciation: no phonetic markings listed; recording only.
no etymology listed, but attached to an entirely different list of such sounds in other languages.
pronounciation: /ʊm/
etymology:
Also, I’ve ignored the recordings—I actually can’t listen to them on this computer—but why would there be a mispronounced pronunciation guide? I mean, wouldn’t people who aren’t US speakers correct it, if they knew better? I’m not a US speaker, and I would.
ETA: apparently “hum” may come from the old English version of this—from which we also get um and hmm. Or something.