keep one's eyes open
phrase
variants
or keep one's eyes peeled
: to be on the alert : be watchful
Cite this Entry
“Keep one's eyes open.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/keep%20one%27s%20eyes%20open. Accessed 11 Dec. 2025.
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Merriam-Webster unabridged
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