keep a watch out for
idiom
: to regularly check to see if someone has arrived or if something has appeared or happened
She asked him to keep a watch out for the delivery truck.
Examples of keep a watch out for in a Sentence
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Under the new rules, companies and institutions may be asked to keep a watch out for and prevent foreign espionage activity.
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Aj Willingham, CNN, 27 Apr. 2021
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Aj Willingham, CNN, 27 Apr. 2021
Cite this Entry
“Keep a watch out for.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/keep%20a%20watch%20out%20for. Accessed 22 Jul. 2025.
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