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
Some airline programs, like Singapore KrisFlyer, have a free stopover perk, so be on the lookout for that, too.
—
Chris Dong, Travel + Leisure, 17 Oct. 2025
Morning commuters will need to be on the lookout for runners, joggers and walkers.
—Joseph Hernandez, Kansas City Star, 15 Oct. 2025
While viewing them, be on the lookout for spectacular fireballs — especially bright meteors that flare dramatically to outshine even the brightest planets in the night sky.
—Anthony Wood, Space.com, 13 Oct. 2025
However, women should know how their breasts look and feel and be on the lookout for any concerning changes.
—Katia Hetter, CNN Money, 1 Oct. 2025
See All Example Sentences for be on the lookout for
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Chris Dong, Travel + Leisure, 17 Oct. 2025
Morning commuters will need to be on the lookout for runners, joggers and walkers.
—Joseph Hernandez, Kansas City Star, 15 Oct. 2025
While viewing them, be on the lookout for spectacular fireballs — especially bright meteors that flare dramatically to outshine even the brightest planets in the night sky.
—Anthony Wood, Space.com, 13 Oct. 2025
However, women should know how their breasts look and feel and be on the lookout for any concerning changes.
—Katia Hetter, CNN Money, 1 Oct. 2025
See All Example Sentences for 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 21 Oct. 2025.
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