guarantee

/ˌɡɛrənˈti/
noun
  1. A formal promise that something will happen or be done, or that something is true.
    • There is no guarantee that the train will arrive on time.
    • The store offers a money-back guarantee if you are not satisfied.
    • He gave his personal guarantee that the work would be finished by Friday.
  2. A written promise by a company to repair or replace a product if it breaks within a certain period.
    • The guarantee covers all parts and labor for the first year.
    • Keep your receipt in case you need to use the guarantee.
    • The laptop comes with a two-year guarantee.
verb
  1. To promise formally that something will happen or be true.
    • The contract guarantees you a minimum salary for the first year.
    • The company guarantees delivery within 24 hours.
    • I cannot guarantee that the weather will be nice for the picnic.
  2. To assume responsibility for the quality or performance of something, or for someone's debt or obligation.
    • The manufacturer guarantees the product against defects.
    • Her father guaranteed her loan so she could buy the car.
    • The bank requires someone to guarantee the mortgage.
Synonyms