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guarantee

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verb [transitive] guarantee pronunciation in British English /ˌɡærənˈtiː/ 
Word Forms
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present tense
I/you/we/theyguarantee
he/she/itguarantees
present participleguaranteeing
past tenseguaranteed
past participleguaranteed

Related dictionary definitions

  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.

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