still waters run deep

idiom

—used to say that people who are quiet or shy are often very intelligent and interesting

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Stillwater
still waters run deep
stilly
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Cite this Entry

“Still waters run deep.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/still%20waters%20run%20deep. Accessed 3 May. 2025.

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