make certain of (something)

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make certain of (something)

To check something in order to confirm that it is true, correct, or is happening. I just want call the restaurant and make certain of our reservations for tonight. I always get to the airport two hours early to be certain of making my flight.
See also: certain, make, of
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

make certain of something

to check something in order to be sure. Please make certain of what you want to do. Would you please make certain of the number of things you want to order?
See also: certain, make, of
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

make certain of something/of doing something

do something in order to be sure that something else will happen: You’ll have to leave soon to make certain of getting there on time.
See also: certain, make, of, something
Farlex Partner Idioms Dictionary © Farlex 2017
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References in periodicals archive ?
"This club has to stay in the Premier League and the one way of making certain of our safety is to be in sixth place come March 31," he said.