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
The cases suggest doctors should be on the lookout for this historic illness, particularly among patients experiencing poverty, food insecurity and social isolation.
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Sarah Kuta, Smithsonian Magazine, 23 Oct. 2024
Also, be on the lookout for aphids, cutworms, woodchucks, and rabbits, which attack seedlings.
—Sheryl Geerts, Better Homes & Gardens, 13 Oct. 2024
The Jacksonville Sheriff's Office had issued a notice for law enforcement agencies nationwide to be on the lookout for the Mustang with North Carolina license plates as a massive search for the suspect was launched, officials said.
—Bill Hutchinson, ABC News, 13 Oct. 2024
But with binoculars trained on the horizon, the boat’s captain is on the lookout for something potentially far more unsettling: orcas, also known as killer whales, who in recent years have taken to slamming boats with alarming regularity.
—Josh Lederman, NBC News, 15 Sep. 2024
See all Example Sentences for be on the lookout for 
Sarah Kuta, Smithsonian Magazine, 23 Oct. 2024
Also, be on the lookout for aphids, cutworms, woodchucks, and rabbits, which attack seedlings.
—Sheryl Geerts, Better Homes & Gardens, 13 Oct. 2024
The Jacksonville Sheriff's Office had issued a notice for law enforcement agencies nationwide to be on the lookout for the Mustang with North Carolina license plates as a massive search for the suspect was launched, officials said.
—Bill Hutchinson, ABC News, 13 Oct. 2024
But with binoculars trained on the horizon, the boat’s captain is on the lookout for something potentially far more unsettling: orcas, also known as killer whales, who in recent years have taken to slamming boats with alarming regularity.
—Josh Lederman, NBC News, 15 Sep. 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 5 Nov. 2024.
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