keep a sharp eye on

phrase

: to watch (someone or something) carefully

Keep a sharp eye on the kids to make sure they don't hurt themselves.

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“Keep a sharp eye on.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/keep%20a%20sharp%20eye%20on. Accessed 9 Mar. 2026.

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keep a sharp eye on

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