hella, adv. and adj. This North American slang term is an intensifier, meaning “very, exceedingly,” that is first recorded in Toronto in 1987, but which does not have any particular regional association, being used throughout Canada and the United States.
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It most certainly does have “particular regional association”; the Wikipedia article starts off “Hella is a word associated with Northern California, mainly the Bay Area” and continues “According to lexicographer Allan A. Metcalf, the word is a marker of Northern California dialect.” I have never heard it from an East Coast native—which is not to say, of course, that no East Coast native uses it, but “used throughout Canada and the United States” is grossly misleading.