Wiktionary
helluv
Etymology 1 a. (context slang chiefly N CA English) Intensifier, signifies an abundance of a thing; much or many. adv. 1 (context slang chiefly N CA English) Intensifier (modifies verbs); to a large extent; totally; very much. 2 (context slang chiefly N CA English) Intensifier (modifies adjectives); to a large degree; extremely; exceedingly. interj. (context slang chiefly N CA English) for sure; totally; hell yeah; used as a strong affirmation of something that was just said, accomplished, or revealed. Etymology 2
contraction 1 (context colloquial English) Elision of "hell of". 2 (context colloquial English) Elision of "the hell of". 3 (context colloquial English) Elision of "hell have"