be sure
idiom
—used to tell someone not to forget to do something
Be sure to lock the door when you leave.
Examples of be sure in a Sentence
Recent Examples on the Web
Update your emergency kit and be sure to include enough food and water to last for 3 days for each person in your home.
—
Nc Weather Bot, Charlotte Observer, 13 Dec. 2025
Just be sure to install the cables before bad weather hits.
—Sarah Moore, Freep.com, 12 Dec. 2025
Then be sure to check out our roundups of the top telescopes and binoculars available in 2025.
—Anthony Wood, Space.com, 6 Dec. 2025
Prepare Bathrooms Before hosting guests, be sure that all high-traffic areas (such as bathrooms) receive proper maintenance.
—Jessica Bennett, Better Homes & Gardens, 5 Dec. 2025
See All Example Sentences for be sure
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Nc Weather Bot, Charlotte Observer, 13 Dec. 2025
Just be sure to install the cables before bad weather hits.
—Sarah Moore, Freep.com, 12 Dec. 2025
Then be sure to check out our roundups of the top telescopes and binoculars available in 2025.
—Anthony Wood, Space.com, 6 Dec. 2025
Prepare Bathrooms Before hosting guests, be sure that all high-traffic areas (such as bathrooms) receive proper maintenance.
—Jessica Bennett, Better Homes & Gardens, 5 Dec. 2025
See All Example Sentences for be sure
Cite this Entry
“Be sure.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/be%20sure. Accessed 20 Dec. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share