To proofread.

To make resistant, especially to water.

To allow yeast-containing dough to rise.

The process of dough proofing.

To demonstrate that something is true or viable; to give proof for.

“I will prove that my method is more effective than yours.”

To turn out; to manifest.

“It proved to be a cold day.”

To turn out to be.

“Have an exit strategy should your calculations prove incorrect.”