guaranteed

Definitions

Provided with a formal assurance or promise, especially in writing, that a product or service will meet certain standards.

Certain to happen or be the case; inevitable.

Protected against loss or failure by a formal pledge or security.

Examples

The company offers a money-back guarantee on all of its products.

Success is not guaranteed, but hard work significantly increases your chances.

Synonyms

assured warranted certain secured promised certified vouched

Antonyms

uncertain doubtful unreliable questionable risky unconfirmed conditional