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
Rosen refuted Palomares’ claim, saying the tugboat captain was reckless and should have been on the lookout for recreational boaters who frequent those waters.
—
David Goodhue, Miami Herald, 30 Oct. 2025
Another showy Thai hybrid to be on the lookout for is ‘Iceman,’ with random narrow green lines contrasting against its thick, silvery leaves.
—The New York Times News Service Syndicate, San Diego Union-Tribune, 25 Oct. 2025
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
See All Example Sentences for be on the lookout for
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.
David Goodhue, Miami Herald, 30 Oct. 2025
Another showy Thai hybrid to be on the lookout for is ‘Iceman,’ with random narrow green lines contrasting against its thick, silvery leaves.
—The New York Times News Service Syndicate, San Diego Union-Tribune, 25 Oct. 2025
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
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 9 Nov. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share