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
This cornbread is tender thanks to buttermilk and melted butter—just make certain to buy cornmeal that is certified as gluten-free.
—
Kimberly Holland, Southern Living, 30 Dec. 2025
These additions can make certain pretzel products closer to a dessert than a simple snack.
—Brianna Tobritzhofer, Health, 30 Dec. 2025
The lower costs offered through TrumpRx may still not make certain drugs more affordable for all, Dusetzina said.
—Berkeley Lovelace Jr, NBC news, 25 Dec. 2025
By removing maintenance-heavy internal combustion systems and replacing them with electric drivetrains, Everrati aims to make certain classics viable daily drivers again, particularly in regions where clean-air zones and emissions restrictions increasingly limit access.
—Paul Ratner, Interesting Engineering, 17 Dec. 2025
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Kimberly Holland, Southern Living, 30 Dec. 2025
These additions can make certain pretzel products closer to a dessert than a simple snack.
—Brianna Tobritzhofer, Health, 30 Dec. 2025
The lower costs offered through TrumpRx may still not make certain drugs more affordable for all, Dusetzina said.
—Berkeley Lovelace Jr, NBC news, 25 Dec. 2025
By removing maintenance-heavy internal combustion systems and replacing them with electric drivetrains, Everrati aims to make certain classics viable daily drivers again, particularly in regions where clean-air zones and emissions restrictions increasingly limit access.
—Paul Ratner, Interesting Engineering, 17 Dec. 2025
See All Example Sentences for make certain
Cite this Entry
“Make certain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/make%20certain. Accessed 13 Jan. 2026.
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