guarantee

Academic Word List, sublist 7.

About 13.44 uses per million words.

Meaning

noun Anything that assures a certain outcome.
Can you give me a guarantee that he will be fit for the match?
noun A legal assurance of something, e.g. a security for the fulfillment of an obligation.
noun A written declaration that a certain product will be fit for a purpose and work correctly; a warranty.
The cooker comes with a five-year guarantee.
noun The person to whom a guarantee is made.
noun A person who gives such a guarantee; a guarantor.
verb To give an assurance that something will be done right.
verb To assume or take responsibility for a debt or other obligation.
verb To make something certain.
The long sunny days guarantee a good crop.