enough

American Heritage® Dictionary of the English Language, Fourth Edition

1. adj. Sufficient to meet a need or satisfy a desire; adequate: enough work to keep us all busy. See Synonyms at sufficient.
2. pro. An adequate number or quantity: "The Gods above should give,/They have enough and we do poorly live” ( Henry David Thoreau).
3. adv. To a satisfactory amount or degree; sufficiently: Is the fish cooked enough?
4. adv. Very; fully; quite: We were glad enough to leave.
5. adv. Tolerably; rather: She sang well enough, but the show was a failure.
6. interj. Used to express impatience or exasperation: You've been practicing the guitar all afternoon. Enough!

Century Dictionary and Cyclopedia

1. Answering the purpose; adequate to want or demand; sufficient; satisfying desire; giving content; meeting reasonable expectation.
2. Synonyms Sufficient, Competent, etc. See adequate.
3. n. A quantity of a thing or act, or a number of things or persons, sufficient to satisfy desire or want, or adequate to a purpose; sufficiency: as, we have enough of this sort of cloth.
4. n. Synonyms Plenty, abundance.
5. In a quantity or degree that answers the purpose, satisfies, or is equal to the desires or wants; to a sufficient degree; sufficiently.
6. To a notable extent; fairly; rather: used to denote a slight augmentation of the positive degree, the force depending upon the connection or the emphasis: as, he is ready enough to embrace the offer.
7. In a tolerable or passable degree: used to denote diminution, or a degree or quality rather less than is desired, or such a quantity or degree as commands acquiescence rather than full satisfaction: as, the performance is well enough.
8. To a great degree; very much.
9. An elliptical exclamation, signifying ‘it (or that) is enough,’ ‘I have had enough,’ ‘you have done enough,’ etc.

Wiktionary

1. sufficient; all that is required, needed, or appropriate
2. adv. sufficiently
3. pro. A sufficient or adequate number, amount, etc.
4. interj. stop! Don't do that anymore, etc.

GNU Webster's 1913

1. adj. Satisfying desire; giving content; adequate to meet the want; sufficient; -- usually, and more elegantly, following the noun to which it belongs.
2. adv. In a degree or quantity that satisfies; to satisfaction; sufficiently.
3. adv. Fully; quite; -- used to express slight augmentation of the positive degree, and sometimes equivalent to very.
4. adv. In a tolerable degree; -- used to express mere acceptableness or acquiescence, and implying a degree or quantity rather less than is desired.
5. n. A sufficiency; a quantity which satisfies desire, is adequate to the want, or is equal to the power or ability.
6. interj. An exclamation denoting sufficiency, being a shortened form of it is enough.

WordNet 3.0

1. adv. as much as necessary
2. adj. sufficient for the purpose
3. n. an adequate quantity; a quantity that is large enough to achieve a purpose