Dude, I helluv want to go to the show with you, but I'm soooo grounded.
(slang, chiefly N CA) For sure; totally; hell yeah; used as a strong affirmation of something that was just said, accomplished, or revealed.
"Hey, you wanna come to the concert tonight?" "Oh, helluv!"
(colloquial) Elision of "hell of".
(colloquial) Elision of "the hell of".
(colloquial) Elision of "hell have"