I. i-ˈnəf, ē-, ə- adjective
Etymology: Middle English ynough, from Old English genōg (akin to Old High German ginuog enough), from ge- (perfective prefix) + -nōg; akin to Latin nancisci to get, Greek enenkein to carry — more at co-
Date: before 12th century
: occurring in such quantity, quality, or scope as to fully meet demands, needs, or expectations
enough food for everyone
Synonyms: see sufficient
II. adverb
Date: before 12th century
1. : in or to a degree or quantity that satisfies or that is sufficient or necessary for satisfaction : sufficiently
2. : fully , quite
he is qualified enough for the position
3. : in a tolerable degree
she sang well enough
III. pronoun
Date: before 12th century
: a sufficient number, quantity, or amount
enough were present to constitute a quorum
had enough of their foolishness
— often used interjectionally