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
People should be on the lookout for signs of heat exhaustion and heat stroke, two distinct affiliations caused by high temperatures.
—
Joe Hernandez, NPR, 16 June 2024
Nutt had been on the lookout for a vehicle involved in a robbery in Danville and noticed a vehicle with no license plate and with the front-seat passenger, Robinson, wearing a ski mask with two eye holes and a nose hole, pulled down over his face.
—Rick Hurd, The Mercury News, 12 June 2024
The city warned residents to be on the lookout for great horned owls, one of the largest and most distinctive species in North America.
—Natalie Wallington, Kansas City Star, 10 June 2024
This means being on the lookout for abnormally high web server CPU load, excessive memory usage and non-native traffic profiles.
—Justin Klawans, The Week Us, theweek, 3 June 2024
See all Example Sentences for be on the lookout for 
Joe Hernandez, NPR, 16 June 2024
Nutt had been on the lookout for a vehicle involved in a robbery in Danville and noticed a vehicle with no license plate and with the front-seat passenger, Robinson, wearing a ski mask with two eye holes and a nose hole, pulled down over his face.
—Rick Hurd, The Mercury News, 12 June 2024
The city warned residents to be on the lookout for great horned owls, one of the largest and most distinctive species in North America.
—Natalie Wallington, Kansas City Star, 10 June 2024
This means being on the lookout for abnormally high web server CPU load, excessive memory usage and non-native traffic profiles.
—Justin Klawans, The Week Us, theweek, 3 June 2024
See all Example Sentences for be on the lookout for
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'be on the lookout for.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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 30 Jun. 2024.
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