Be significant, indicate a great deal, as in That house of theirs speaks volumes about their income. This idiom uses volumes in the sense of “the information contained in volumes of books.” [c. 1800]
Words nearby speak volumes
How to use speak volumes in a sentence
While natural color is no indication of quality, it can speak volumes about character.
While Marville did not campaign for any particular point of view, his photographs speak volumes.Charles Marville Captures the Rebirth of 1800s Paris in New Exhibition|William O’Connor|November 13, 2013|DAILY BEAST
Handbags speak volumes about the women who carry them—Prime Minister Margaret Thatcher was no different.The Language of Margaret Thatcher’s Handbags|Robin Givhan|April 8, 2013|DAILY BEAST
Sometimes a single number—in this case, $2.901 billion—can speak volumes about what is really happening on Wall Street these days.How Much Will Goldman Sachs Give Out In Bonuses?|William D. Cohan|October 16, 2008|DAILY BEAST
These trials speak volumes as to the state of feeling and opinion among the vulgar with regard to human liberty.On Liberty|John Stuart Mill
The trees and plants from that Station certainly speak volumes for the work being done by Supt. Haralson.
The subdued words, the saddened tone seemed to speak volumes.The Shadow of Ashlydyat|Mrs. Henry Wood
A stranger need not be a day in Buenos Ayres without discovering this; and such traits speak volumes.A Five Years' Residence in Buenos Ayres|George Thomas Love
This is not decisive, but it may well be one of those small facts which speak volumes.Fray Luis de Len|James Fitzmaurice-Kelly