
...because she's afraid
she's not smart ENOUGH for Leonard.
The Big Bang Theory Season 2, Episode 1

You getting ENOUGH sleep?
Actually, no.
Breaking Bad Season 2, Episode 12

I see things clear ENOUGH.
Breaking Bad Season 3, Episode 8

And not one of your bald friends
is fast ENOUGH to stop me.
Game of Thrones Season 4, Episode 9

That's ENOUGH.
Game of Thrones Season 1, Episode 4