Smartest

Everybody arrived dressed in their smartest clothes.

Kate is the smartest student in our class.

He has the illusion that he is the smartest in his class.

I can't believe that you were the smartest kid in your class.

Tom is the smartest man I know.

If he thinks he's the smartest, then there are people much smarter than him.

You're the smartest person I know.

You're supposed to be the smartest guy here.

It will be the smartest move you ever made.

Buying this painting was the smartest thing you've ever done.