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assure

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verb [transitive] assure pronunciation in American English /əˈʃʊr/ 
Word Forms
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present tense
I/you/we/theyassure
he/she/itassures
present participleassuring
past tenseassured
past participleassured
  1. 1
    formal to tell someone that something will definitely happen or is definitely true, especially in order to remove doubt about it

    There's not much more I can say to assure you.

    assure someone of something:

    She assured me of her support.

    assure someone (that):

    The president assured me that he would sign the bill as amended.

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