assure (one) of

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assure (one) of

To try to convince one of something or quell one's fears. The partners are getting nervous—we need to assure them of the deal's favorable terms. Can you please assure the boss of my ability to handle this project?
See also: assure, of

assure someone of something

to guarantee something to someone; to promise someone that something will happen or that a particular state exists. I want to assure you of our good intentions. Frequently, she had to assure herself of her basic worth.
See also: assure, of
References in classic literature ?
Bingley will be very glad to see you; and I will send a few lines by you to assure him of my hearty consent to his marrying whichever he chooses of the girls; though I must throw in a good word for my little Lizzy.