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guarantee - definition and synonyms


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verb [transitive] guarantee pronunciation in British English /ˌɡærənˈtiː/
Word Forms
present tense
present participleguaranteeing
past tenseguaranteed
past participleguaranteed
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  1. 1
    to make it certain that something will happen or exist
    The government provides help for small businesses, but it cannot guarantee their success.
    guarantee (that): We can’t guarantee that you will get the cheapest fare possible.
    be guaranteed by/under something: Freedom of speech is guaranteed by our constitution.
    The right to a fair trial is guaranteed under Article Six of the convention.
    guarantee someone something: This win guarantees them a place in the final.
  2. 2
    to promise that something will happen
    You should pass the test first time, but we can’t guarantee it.
    guarantee (that): He guaranteed they would be paid on time.
    guarantee to do something: Our tutors can virtually guarantee to get you through the exams.
    1. a.
      to promise someone that they will have something or will get something
      guarantee someone something: We can guarantee you the very finest standards of service.
      be guaranteed something: You’re guaranteed a window seat.
  3. 3
    to agree to repair or replace something that someone has bought if it stops working
    All our products are guaranteed for three years.
    guarantee something against something: The car’s bodywork is fully guaranteed against rusting.


a meal served in the evening which consists of foods traditionally eaten at breakfast

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a company that pays its employees to write online comments in favour or against somebody or something posing as ordinary Internet users

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