keep a watchful eye on (someone or something)
phrase
: to watch (someone or something) closely
The supervisor keeps a watchful eye on the workers.
Cite this Entry
“Keep a watchful eye on (someone or something).” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/keep%20a%20watchful%20eye%20on%20%28someone%20or%20something%29. Accessed 12 Mar. 2026.
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Merriam-Webster unabridged
