How to use "still waters run deep"

What Does "still waters run deep" Mean?

• The idiom "still waters run deep" means that a person who appears quiet, calm, or reserved on the surface may have a rich, complex, and profound inner life. They might possess hidden depths of knowledge, experience, strong emotions, or unexpected talents. The outward appearance belies a more profound interior.
• The origin of the phrase is uncertain, but similar expressions can be traced back to ancient Greece. The idea is that a body of water that is calm on the surface can conceal strong currents beneath.
• Register: Neutral

How to Use It

• The phrase "still waters run deep" is typically used as a standalone observation or comment about a person's character. It can be used as a complete sentence or incorporated into a larger sentence. It can be used to describe someone directly or referred to in the third person.
• It sounds unnatural to over-literalize the phrase or use it in contexts where it clearly refers to actual bodies of water, unless doing so for humorous or metaphorical effect. It also sounds unnatural to significantly modify the phrase (e.g., "very still waters run extremely deep"). Negating the phrase is possible, but uncommon and requires careful contextualization (e.g., "In his case, still waters do not run deep.").

Real-World Examples

These examples are sourced from still waters run deep on Ludwig.guru.

""Still waters run deep"." — nytimes.com

"Still waters run deep, aver his admirers." — independent.co.uk

"For Hayley, those still waters run deep." — theguardian.com

"Yet she harbors passions; it might be said of her that still waters run deep." — nytimes.com

"His still waters run deep, which may be why the BROOKLYN ACADEMY OF MUSIC has given its retrospective of his film career the unfortunate title "IN DEPPTH"." — nytimes.com

Examples sourced from https://ludwig.guru/s/still+waters+run+deep

Similar Phrases and Alternatives

Phrase	Context
still waters	A shorter version of the idiom, implying the same hidden depth.
a dark horse	Describes someone whose capabilities are unknown but who might surprise others.
more than meets the eye	Indicates hidden qualities or complexities not immediately apparent.
a closed book	Describes someone difficult to understand, perhaps intentionally secretive.
lurks beneath the surface	Suggests something potentially negative or dangerous is being concealed.
depth of character	Emphasizes the complexity and richness of someone's personality.
understated	Highlights a deliberate lack of outward show, implying inherent quality.

Common Mistakes

• A common mistake is to use the phrase in a context where it refers to actual bodies of water, losing the figurative meaning.
• Another error is assuming that the "deep" aspect is always positive. While often used positively, it can also imply hidden negativity or complexity that isn't necessarily virtuous.
• Overusing the phrase can also be a mistake. It's a somewhat formal idiom, and relying on it too often can make your language sound stilted.
• Learners often misunderstand the figurative meaning and interpret it literally as a statement about bodies of water.

Quick-Reference Summary

Expression	Idiomatic Meaning	Register	Avoid In
still waters run deep	Quiet or reserved people often have hidden depths of knowledge, experience, or strong emotions.	Neutral	Discussions about actual bodies of water.

FAQs

Is "still waters run deep" ever used literally?

No, the expression "still waters run deep" is almost always used figuratively to describe a person's character. While the image is drawn from the natural world, its meaning is about hidden depths in people, not actual bodies of water. Using it literally would be a misinterpretation of the idiom.

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How is "still waters run deep" different from "a dark horse"?

Both "still waters run deep" and "a dark horse" describe someone whose true capabilities are not immediately apparent. However, "still waters run deep" emphasizes the hidden depth of character, experience, or emotion, while "a dark horse" focuses on someone who is unexpectedly successful in a competition or election.

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How can I avoid misinterpreting "still waters run deep" literally?

To avoid the common mistake of literal interpretation, remember that "still waters run deep" is about people, not ponds! If you're describing a person who seems quiet but is actually very knowledgeable or complex, then this idiom is appropriate. If you're discussing actual bodies of water, choose a different phrase!