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
From Lisbon to Bali, a combination of relaxed immigration rules, favorable cost of living, and an interesting lifestyle offering make certain places a magnet for those on the move.
—
Kissa Castaneda, Forbes.com, 15 Sep. 2025
Certain moments make certain songs, and that was one of them.
—Rob Sheffield, Rolling Stone, 12 Sep. 2025
Players are expected to make certain times during their many sprints.
—Gary Bedore, Kansas City Star, 8 Sep. 2025
For example, the tech company will need to make certain search data available to qualified competitors to promote competition.
—Jade Walker, CNN Money, 3 Sep. 2025
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Kissa Castaneda, Forbes.com, 15 Sep. 2025
Certain moments make certain songs, and that was one of them.
—Rob Sheffield, Rolling Stone, 12 Sep. 2025
Players are expected to make certain times during their many sprints.
—Gary Bedore, Kansas City Star, 8 Sep. 2025
For example, the tech company will need to make certain search data available to qualified competitors to promote competition.
—Jade Walker, CNN Money, 3 Sep. 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 17 Sep. 2025.
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