From BiblePortal Wikipedia

Vine's Expository Dictionary of NT Words [1]

A — 1: Ἀρκετός (Strong'S #713 — Adjective — arketos — ar-ket-os' )

"sufficient," akin to arkeo (see B, No. 1), is rendered "enough" in  Matthew 10:25; "sufficient" in  Matthew 6:34; "suffice" in  1—Peter 4:3 , lit., "(is) sufficient." See Suffice , Sufficient.

A — 2: Ἱκανός (Strong'S #2425 — Adjective — hikanos — hik-an-os' )

"sufficient, competent, fit" (akin to hikano and hiko, "to reach, attain" and hikanoo, "to make sufficient"), is translated "enough" in  Luke 22:38 , of the Lord's reply to Peter concerning the swords. See Able.

 Luke 15:17  Acts 27:38

B — 1: Ἀρκέω (Strong'S #714 — Verb — arkeo — ar-keh'-o )

"to ward off;" hence, "to aid, assist;" then, "to be strong enough," i.e., "to suffice, to be enough" (cp. A, No. 1), is translated "be enough" in  Matthew 25:9 . See Content.

B — 2: Ἀπέχω (Strong'S #568 — Verb — apecho — ap-ekh'-o )

lit., "to hold off from, to have off or out" (apo, "from," echo, "to have"), i.e., "to have in full, to have received," is used impersonally in  Mark 14:41 , "it is enough," in the Lord's words to His slumbering disciples in Gethsemane. It is difficult, however, to find examples of this meaning in Greek usage of the word, and apecho may here refer, in its commercial significance, to Judas (who is mentioned immediately afterwards), with the meaning "he hath received" (his payment); cp. the same use in  Matthew 6:2,5,16 (see Deissmann, Light from the Ancient East, pp. 110ff.). See Abstain , Have , Receive.

King James Dictionary [2]

ENOUGH', a. enuf'. Heb. to rest, to be quiet or satisfied.

That satisfies desire, or gives content that may answer the purpose that is adequate to the wants.

She said, we have straw and provender enough.  Genesis 24

How many hired servants of my father have bread enough, and to spare.  Luke 15 .

Note. This word, in vulgar language, is sometimes placed before its noun, like most other adjectives. But in elegant discourse or composition, it always follows the noun, to which it refers as, bread enough money enough.

ENOUGH', n. enuf'. A sufficiency a quantity of a thing which satisfies desire, or is adequate to the wants. We have enough of this sort of cloth.

And Esau said, I have enough, my brother.  Genesis 33

Israel said, it is enough Joseph is yet alive.  Genesis 45

1. That which is equal to the powers or abilities. He had enough to do to take care of himself.

ENOUGH', adv. enuf'. Sufficiently in a quantity or degree that satisfies, or is equal to the desires or wants.

The land, behold, it is large enough for them.  Genesis 34

Ye have dwelt long enough in this mount.  Deuteronomy 1

1. Fully quite denoting a slight augmentation of the positive degree. He is ready enough to embrace the offer. It is pleasure enough to consider the different notions of different men respecting the same thing. 2. Sometimes it denotes diminution, delicately expressing rather less than is desired such a quantity or degree as commands acquiescence, rather than full satisfaction. The song or the performance is well enough. 3. An exclamation denoting sufficiency. Enough, enough, I'll hear no more.

Webster's Dictionary [3]

(1): ( interj.) An exclamation denoting sufficiency, being a shortened form of it is enough.

(2): ( adv.) Fully; quite; - used to express slight augmentation of the positive degree, and sometimes equivalent to very; as, he is ready enough to embrace the offer.

(3): ( a.) Satisfying desire; giving content; adequate to meet the want; sufficient; - usually, and more elegantly, following the noun to which it belongs.

(4): ( adv.) In a degree or quantity that satisfies; to satisfaction; sufficiently.

(5): ( adv.) In a tolerable degree; - used to express mere acceptableness or acquiescence, and implying a degree or quantity rather less than is desired; as, the song was well enough.

(6): ( n.) A sufficiency; a quantity which satisfies desire, is adequate to the want, or is equal to the power or ability; as, he had enough to do take care of himself.