enough(adverb)

to the degree needed

Is it hot enough?; He swam well enough to pass the test.

enough(adjective)

in the number or quantity etc needed

Have you enough money to pay for the books?; food enough for everyone.

enough(adverb)

one must admit; you must agree

She's pretty enough, but not beautiful; Oddly enough, it isn't raining.

enough(pronoun)

the amount needed

He has had enough to eat; I've had enough of her rudeness.