hella

Short definition from Wiktionary

Determiner

1. 1
   Intensifier, signifies an abundance of a thing; much or many.

Pronoun

1. 1
   A lot; very much.

Adverb

1. 1
   Intensifier, modifying verbs; to a large extent; totally; very much.
2. 2
   Intensifier, modifying adjectives; to a large degree; extremely; exceedingly.

Interjection

1. 1
   For sure; totally; hell yeah; used as a strong affirmation of something that was just said, accomplished, or revealed.

Contraction

1. 1
   Contraction of Hell have.

Proper noun

1. 1
   Any of various place names.