Why wasn't the military success in Afghanistan enough retaliation for the 9/11 attacks?
The very idea of erections among the aged is enough to make some laugh and others gag.
A dollar millionaire that is, even though it might be enough for most Swedes to become a millionaire in their own currency.
For only with that knowledge would they have had enough information to make an informed—and, no doubt, sophisticated—decision.
Why would we want new evidence that might weaken our case, when we already have to enough to convict him?
And because it is enough to amount to somethin' makes it all the more right.
He had left Pen all his property, which was enough to yield a living income for her.
My ribs were ready to burst, but I could no longer get enough air into my chest.
The merchantman had evidently had enough, and saw that there was no further hope.
You would have thought my appearance was enough to freeze their veins and arteries.
c.1300, from Old English genog, a common Germanic formation (cf. Old Saxon ginog, Old Frisian enoch, Dutch genoeg, Old High German ginuog, German genug, Old Norse gnogr, Gothic ganohs).
This is a compound of ge- "with, together" (also a participial, collective, intensive, or perfective prefix) + root -nah, from PIE *nek- "reach, attain" (cf. Sanskrit asnoti "reaches," Hittite ninikzi "lifts, raises," Lithuanian nešti "to bear, carry," Latin nancisci "to obtain").
It is the most prominent among the surviving examples of Old English ge-, the equivalent of Latin com- and Modern German ge-, from PIE *kom- "beside, near, by, with" (see com-).
Meaning "moderately, fairly, tolerably" (good enough) was in Middle English. Understated sense of have had enough "have had too much" was in Old English (which relied heavily on double negatives and understatement). Colloquial 'nough said is attested from 1839.