adequate, enough, sufficient

名詞 enough:

1. an adequate quantity; a quantity that is large enough to achieve a purpose
   同義詞：sufficiency

形容詞 enough:

1. enough to meet a purpose
   同義詞：adequate, decent

副詞 enough:

1. as much as necessary
   同義詞：plenty

1. I've had enough of her continual chatter.
   我已厭煩了她喋喋不休的閑談。
2. Do you have enough time to finish the paper?
   你有足夠的時間寫完論文嗎？
3. Enough is as good as a feast.
   知足常樂。

e.nough

adj.（形容詞）
Sufficient to meet a need or satisfy a desire; adequate:
充足的：足以滿足需要或愿望的；充足的：
例句：
enough work to keep us all busy.See Synonyms at sufficient
足夠多的讓我們大家全都忙碌的工作參見 sufficient

pron.（代詞）
An adequate number or quantity:
數目足夠，數量充足：
例句：
.The Gods above should give,/They have enough and we do poorly live.(Henry David Thoreau)
.天上的神祉應該賜予/因他們富足而我們卻貧苦度日.(亨利·戴維·梭羅)

adv.（副詞）
To a satisfactory amount or degree; sufficiently:
足夠地，充分地：數量或程度上令人滿意地；足夠地：
例句：
Is the fish cooked enoughô
魚做的火候夠嗎ô

Very; fully; quite:
很；十分；充分地：
例句：
We were glad enough to leave.
我們很高興離開

Tolerably; rather:
尚可；相當：
例句：
She sang well enough, but the show was a failure.
她演唱得算好的了，但演出卻是個失敗

interj.（感嘆詞）
Used to express impatience or exasperation:
用以表達不耐煩或惱怒：
例句：
You`ve been practicing the violin all afternoon. Enough!
你整個下午都在練小提琴。夠了！

來源：
Middle English enogh
中古英語 enogh
from Old English genôg * see nek- 2
源自 古英語 genôg *參見 nek- 2