an unconditional commitment that something will happen or that something is true
"there is no guarantee that they are not lying"
Anything that assures a certain outcome.
"The company offers a money-back guarantee, assuring customers they will receive a full refund if the product fails to meet their expectations within thirty days."
In plain English: A guarantee is a promise that something will work as expected or be fixed if it breaks.
"The warranty acts as a guarantee that the car will be free from defects for three years."
Usage: Use "guarantee" as a noun to refer to a formal promise or assurance that something will happen or be true. It often appears in contexts like product warranties or contractual agreements where a specific result is pledged.
To give an assurance that something will be done right.
"The mechanic gave me a guarantee that he would fix my brakes correctly before I drove home."
In plain English: To guarantee something is to promise that it will definitely happen or be true without any doubt.
"The warranty does not guarantee that the car will never need repairs."
Usage: Use "guarantee" as a verb when you promise with certainty that a specific result will occur or that a service will meet certain standards. It implies taking full responsibility for the outcome, such as guaranteeing a refund if a product is defective.
The word guarantee comes from the Old French verb meaning "to protect" or "assure." It entered English through this Romance language path to describe the act of giving a formal promise.