make certain
idiom
: to do something or find out something so that one has no doubt about whether something is true, correct, will happen, etc.
Make certain (that) you lock the door when you leave.
We must make certain this doesn't happen again.
She made certain she thanked each of them for coming.
Examples of make certain in a Sentence
Recent Examples on the Web
Both Trump and Harris would make certain income entirely tax-free for some workers but not others.
—
Howard Gleckman, Forbes, 9 Sep. 2024
These variations can also make certain polyps easier or harder to find and remove.
Nonneoplastic
Nonneoplastic bladder polyps are less common than neoplastic ones, accounting for only around 5% of bladder masses.
—James Myhre & Dennis Sifris, Md, Verywell Health, 3 Sep. 2024
The researchers wanted to make certain the symptoms being reported were associated with covid rather than being attributable to pregnancy or the postpartum period.
—Sabrina Malhi, Washington Post, 11 July 2024
Our focus now will shift from negotiations to education and enforcement to make certain contract gains are actualized by our members.
—Brian Welk, IndieWire, 1 Aug. 2024
See all Example Sentences for make certain 
Howard Gleckman, Forbes, 9 Sep. 2024
These variations can also make certain polyps easier or harder to find and remove.
Nonneoplastic
Nonneoplastic bladder polyps are less common than neoplastic ones, accounting for only around 5% of bladder masses.
—James Myhre & Dennis Sifris, Md, Verywell Health, 3 Sep. 2024
The researchers wanted to make certain the symptoms being reported were associated with covid rather than being attributable to pregnancy or the postpartum period.
—Sabrina Malhi, Washington Post, 11 July 2024
Our focus now will shift from negotiations to education and enforcement to make certain contract gains are actualized by our members.
—Brian Welk, IndieWire, 1 Aug. 2024
See all Example Sentences for make certain
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'make certain.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near make certain
Cite this Entry
“Make certain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/make%20certain. Accessed 20 Sep. 2024.
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