Green’s Dictionary of Slang

hella adv.

[abbr. helluva adj.]
(US campus)

1. a lot (of), many.

[US]Too $hort ‘The Bitch Sucks Dick’ [lyrics] It was hella times, and it all was nice.
[US]Snoop Doggy Dogg ‘Murder was the Case’ [lyrics] Livin like a baller loc / I’m havin money, and blowin hella chronic smoke.
[US]Eble Campus Sl. Nov. 4: hella – to a large degree or amount [...] There were hella people at that party last night.
[US]C. Buzzell My War (2006) 22: Dude, I’ve done like hella drugs, man.
Nicki Minaj ‘Beez In The Trap’ [lyrics] New Jersey got hella bricks.
67 ‘Take It There’ [lyrics] Ten toes on the block with the gang hella times on the pave.

2. very, extremely, really.

MC Twist ‘B-L-N-T’ [lyrics] I’m makin hella more cents than nickels and dimes.
[US] P. Munro Sl. U.
[US]Da Bomb [Internet] 14: Hella: 1. Very; a lot. [...]. 2. indeed; very; certainly.
[US]Dr Dre ‘Bitch Ass Niggaz’ [lyrics] Bitch nigga, a bitch nigga / Bitch nigga, hella bitch nigga.
[US]Eble Campus Sl. Apr. 3: hella – very: That show was hella awesome.
[US]P. Beatty Sellout (2016) 233: Dickens is an unincorporated city [...] Used to be all black, now there’s hella Mexicans.