Proof and Steadfast

Proof adjective - (used in combination or as a suffix) able to withstand.

Steadfast and proof are semantically related in characteristic topic. In some cases you can use "Steadfast" instead an adjective "Proof", when it comes to topics like impervious.

Nearby Words: proofed, proofing

Steadfast adjective - Firm in one's allegiance to someone or something.

Proof and steadfast are semantically related in characteristic topic. Sometimes you can use "Proof" instead an adjective "Steadfast", if it concerns topics such as impervious.

Nearby Words: steadfastness, steadfastly