To rob someone blind either means to steal freely from them, or to overcharge them:
- Fig. to steal freely from someone. Her maid was robbing her blind. I don't want them to rob me blind. Keep an eye on them.
- Fig. to overcharge someone. You are trying to rob me blind. I won't pay it! Those auto repair shops can rob you blind if you don't watch out.
How did this idiom come about? The construction of this idiom doesn't seem obvious to me, so was there some history to this idiom, or is it based on a special meaning of "blind"? Also, what does the "blind" refer to, the manner of the robbing, the results, or something else?
Best Answer
To "rob someone blind" means to rob that person as though he or she were blind and thus couldn't detect the robbery. The implication, as medica says in her answer, is that the robbery is likely to be thorough and devastating because the robber has no fear of detection and no need to act in haste. The usage originated in the United States and goes back to the 1890s, though it seems not to have caught on in published writings until the first decade of the twentieth century.
Here is the entry for the idiom in Christine Ammer, The American Heritage Dictionary of Idioms, second edition (2013):
The earliest instances of "robbed blind" that my Ngram searches of Google Books found is in a letter from Milo, of Des Moines, Iowa, published in The Western Druggist (October 1891):
Two other nineteenth-century instances of this wording occur. In a submission by "the Indicator's Own Correspondent," "Binghamton, N. Y., Correspondence," in The Indicator ("A National Journal of Insurance" published in Detroit) (May 1893):
And from "Timber on the Chippewa Indian Reservations," in Congressional Serial Set (1898) [snippet]:
The first Google Books instance of "rob [someone] blind" is from a pieced-together article called "Utah's 'Industrial' Army," with no named author, in The [Salt Lake City] Deseret Weekly (May 19, 1894):
The next instance that my searches turned up is from 14 years later, in "Report of Sixth Vice President Hannon," in Machinists' Monthly Journal (July 1908):
Other instances follow soon after. E.A.H. Tays, "Mining in Mexico, Past and Present," in Engineering and Mining Journal, volume 86 (October 3, 1908):
Don A. Frantz, The Silent Partner, volume 4 (1909) [snippet]:
William Frederick Kirk, "The $11,000 Beauty," in Right Off the Bat: Baseball Ballads (1911):
From Fur-fish-game, volume 16 (1912) [snippet]:
George H. Dacy, Fauquier County, Virginia, letter to the editor, in The Southern Planter (October 1913):
The most famous author among earlier users of the phrase is Ring Lardner, in his story "The Crook," in Saturday Evening Post (June 24, 1916):
In the labor unrest of the late 1910s and 1920s in the United States, the notion of being robbed blind became a popular figure of speech in pro-union periodicals. In just the years 1918 through 1920, Google Books finds versions of the phrase from The American Flint ("Official Magazine of the American Flint Glass Workers' Union of North America"), The Railroad Worker, Utah Labor News (reprinted in National Labor Digest), Brotherhood of Locomotive Firemen and Enginemen's Magazine, and a book-length critique of "the crimes perpetrated by big business" titled Who Will Answer for Mr. Schwab? (invoking the name of Charles M. Schwab, then president of Bethlehem Steel Corporation).