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.
—
Star-Telegram Weather Bot, Fort Worth Star-Telegram, 28 Dec. 2025
Update your emergency kit and be sure to include enough food and water to last for 3 days for each person in your home.
—Ca Weather Bot, Sacbee.com, 27 Dec. 2025
Certain accommodations don't have private bathrooms, so be sure to book a Frontier Cabin if a shower is nonnegotiable.
—Evie Carrick, Travel + Leisure, 27 Dec. 2025
La Ligne’s chocolate brown cardigan and matching wide leg pants can make even economy feel luxurious (just be sure to pack an eye mask to drown out overhead lighting).
—Elly Leavitt, Vogue, 27 Dec. 2025
See All Example Sentences for be sure
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Star-Telegram Weather Bot, Fort Worth Star-Telegram, 28 Dec. 2025
Update your emergency kit and be sure to include enough food and water to last for 3 days for each person in your home.
—Ca Weather Bot, Sacbee.com, 27 Dec. 2025
Certain accommodations don't have private bathrooms, so be sure to book a Frontier Cabin if a shower is nonnegotiable.
—Evie Carrick, Travel + Leisure, 27 Dec. 2025
La Ligne’s chocolate brown cardigan and matching wide leg pants can make even economy feel luxurious (just be sure to pack an eye mask to drown out overhead lighting).
—Elly Leavitt, Vogue, 27 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 1 Jan. 2026.
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