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1. A passenger in a vehicle (not necessarily in the backseat) who attempts to instruct the driver or criticize their driving skills. John quickly became annoyed at Mary's tendency to become a backseat driver whenever he drove her somewhere, so he just began to let her drive.
2. By extension, someone who tries to establish and maintain control over every situation. Primarily heard in US. Although Mary was capable of completing the project on her own, John couldn't stop himself from being a backseat driver and telling her what to do.
take a backseat
1. To be given a lower priority. Unfortunately, I had the flu last week, so everything else around the house had to take a back seat.
2. To willingly take a less prominent role in some situation. I took a back seat during the presentation because I knew you could handle it.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Fig. an annoying passenger who tells the driver how to drive; someone who tells others how to do things. I don't need any backseat driver on this project. Stop pestering me with all your advice. Nobody likes a backseat driver!
take a backseat (to someone or something)
Fig. to become less important than someone or something else. My homework had to take a backseat to football during the playoffs. Jimmy always took a backseat to his older brother, Bill, until Bill went away to college.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
A passenger who gives unwanted and/or unneeded directions to the driver; also, a person who interferes in affairs without having knowledge, responsibility, or authority for doing so. For example, Aunt Mary drives us all crazy with her instructions; she's an incurable backseat driver. This term originated in the United States in the 1920s, when it was first used for a passenger legitimately directing a chauffeur, and it was quickly transferred to figurative use. Also see the synonym Monday-morning quarterback and the antonym take a back seat.
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
n. an annoying passenger who tells the driver how to drive; someone who tells others how to do things. I don’t need any backseat driver on this project.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
A passenger who gives unasked-for and usually unwanted advice to the driver of a vehicle; by extension, anyone who interferes without having real responsibility or authority. The term originated in the United States during the 1920s, when many automobiles were chauffeur-driven and their passengers sat in the backseat, often quite legitimately telling the chauffeur where to go. Today the passenger’s location is irrelevant, the term being principally figurative. It has largely replaced the older armchair general. See also Monday-morning quarterback and the very different take a backseat.
take a backseat, to
To occupy an inferior or relatively obscure position. Equating the backseat of a vehicle with inferiority dates from mid-nineteenth century America. Max Beerbohm used the figure of speech in Around Theatres (1902): “He brought on a circus procession . . . and Oxford had to take a back seat.”
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer