This plate is dishwasher proof.

This material is acid-proof.

Proof spirit is a term used in the distilling industry to refer to a high-proof alcoholic beverage.

The ontological proof is a philosophical argument for the existence of God.

The DNA evidence was proof positive of his guilt.

Proof readers play a crucial role in ensuring the accuracy of written content.

This phone case is splash-proof.

This fabric is rot-proof, so it will last for a long time.

Proofs by example are often used in mathematics to illustrate concepts.

Proofs by contradiction are commonly used in mathematics.