be on the lookout for
idiom
variants
or keep a lookout for
: to watch or search for (something or someone) : be alert to
Be on the lookout for flooded roads after heavy rainstorms.
The police officer walked through the neighborhood, keeping a (sharp) lookout for any suspicious activity.
Examples of be on the lookout for in a Sentence
Recent Examples on the Web
Krein is certainly someone to be on the lookout for in the future.
—
Tyler Shepherd, USA TODAY, 2 Feb. 2025
As missions to these and other celestial candidates for life advance, investigators will be on the lookout for the same minerals identified in Bennu’s samples.
—Ella Jeffries, Smithsonian Magazine, 29 Jan. 2025
After getting past security, Capitol Police were alerted to his presence and issued a bulletin to be on the lookout for the man.
—Pierre Thomas, ABC News, 23 Jan. 2025
At the time of the flyby, be on the lookout for a potential video or statement release from NASA and JHUAPL mission team members to mark the event.
—Tariq Malik, Space.com, 22 Dec. 2024
See all Example Sentences for be on the lookout for 
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Tyler Shepherd, USA TODAY, 2 Feb. 2025
As missions to these and other celestial candidates for life advance, investigators will be on the lookout for the same minerals identified in Bennu’s samples.
—Ella Jeffries, Smithsonian Magazine, 29 Jan. 2025
After getting past security, Capitol Police were alerted to his presence and issued a bulletin to be on the lookout for the man.
—Pierre Thomas, ABC News, 23 Jan. 2025
At the time of the flyby, be on the lookout for a potential video or statement release from NASA and JHUAPL mission team members to mark the event.
—Tariq Malik, Space.com, 22 Dec. 2024
See all Example Sentences for be on the lookout for
Dictionary Entries Near be on the lookout for
Cite this Entry
“Be on the lookout for.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/be%20on%20the%20lookout%20for. Accessed 8 Feb. 2025.
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