2 enough
Function:
adverb always used after an adjective, adverb, or verbMeaning:
1 : in the amount needed : to the necessary degree ▪ I couldn't run fast enough to catch up with her. ▪ She's old enough to know better. ▪ Are you rich enough to retire? ▪ That's good enough for me. ▪ Oddly/curiously/strangely/amazingly/surprisingly enough, they've never actually met. ▪ As if the crowds aren't bad enough, the parking situation is terrible. ▪ You're always ready enough [=always very or too ready] to blame someone else for your mistakes. ▪ I was happy/willing enough [=I was happy/willing] to go along with his plan. ▪ We can do it if they help enough.
2 : to a degree that is not very high or very low : to a reasonable extent ▪ He sings well enough. [=he sings fairly well] ▪ The solution seems simple enough. [=the solution seems fairly simple]
2 : to a degree that is not very high or very low : to a reasonable extent ▪ He sings well enough. [=he sings fairly well] ▪ The solution seems simple enough. [=the solution seems fairly simple]
fair enough —see 1fair
sure enough —see 2sure