# Proof definition

An example of proof is someone returning to eat at the same restaurant many times showing they enjoy the food.

Waterproof watches; a fireproof cellar door.

*Waterproof.*

*Foolproof*, *rustproof.*

*Fireproof.*

Was asked for proof of his identity; an employment history that was proof of her dependability.

Proof liquor.

A proof copy of the manuscript.

Proof a fabric against shrinkage.

The batter proofed overnight.

To work on the *proof* of a theory.

The *proof* of the pudding is in the eating.

*Proof* against criticism.

*transitive verb*, 5.

A proof load; a proof charge.

Proof against harm.

Waterproof; bombproof.

Put one's beliefs to the proof.