A person's calm exterior often conceals great depths of character, just as the deepest streams can have the smoothest surfaces.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
How to use Still waters run deep in a sentence
She is one of those characters, of whom it has been said proverbially, that "Still waters run deep."Characteristics of Women | Anna Jameson
"Still waters run deep," they said, and all those to whom they said it nodded in a wise acquiescence.First and Last | H. Belloc
Still waters run deep, say the English, and the Italians, Still waters ruin bridges.Cosmopolis, Complete | Paul Bourget
Yes, and there is another old proverb and one much more to the purpose that says, “Still waters run deep.”Dramatic Technique | George Pierce Baker
We sometimes hear it said of a person who is very quiet and does not speak much that "Still waters run deep."Stories That Words Tell Us | Elizabeth O'Neill
Other Idioms and Phrases with Still waters run deep
A quiet person may be very profound, as in Susie rarely says much, but still waters run deep. The physical observation in this term dates from ancient times, but it has been used figuratively since about 1400. Anthony Trollope amplified it in He Knew He Was Right (1869): “That's what I call still water. She runs deep enough. . . . So quiet, but so—clever.”
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.