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• back-and-forth
  back-and-forth

  adjective

  backward and forward; side to side; to and fro.
• back and forth
  back and forth

  Also, backward(s) and forward(s). To and fro, moving in one direction and then the opposite and so making no progress in either. For example, The clock pendulum swung back and forth. The term is also used figuratively, as in The lawyers argued the point backwards and forwards for an entire week. [c. 1600]

back-and-forth

American  

[bak-uhn-fawrth, -fohrth, -uhnd-] / ˈbæk ənˈfɔrθ, -ˈfoʊrθ, -ənd- /

adjective

1. backward and forward; side to side; to and fro.

   a back-and-forth shuttling of buses to the stadium; the back-and-forth movement of a clock's pendulum.

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noun

1. unresolved argument or discussion.

back and forth Idioms  

1. Also, backward(s) and forward(s). To and fro, moving in one direction and then the opposite and so making no progress in either. For example, The clock pendulum swung back and forth. The term is also used figuratively, as in The lawyers argued the point backwards and forwards for an entire week. [c. 1600]

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Usage

What does back-and-forth mean? Back-and-forth is a noun that means an argument or discussion in which little gets resolved. Back-and-forth is also used to describe something having a movement pattern in which it repeatedly moves somewhere and returns to where it started. A back-and-forth is a discussion where two or more people are failing to reach a compromise or a solution, as in I had a very long back-and-forth with my girlfriend about what to do with my dog. A back-and-forth is a much less productive version of a give-and-take, where people more easily reach a compromise. As an adjective, back-and-forth describes a movement from one point to another and then back to the original point, as in The audience stared at the back-and-forth movements of the hypnotist’s watch. Such a movement might be forward and backward and forward again or from one side to another and back to the first side. Example: The budget discussion became an intense back-and-forth where neither side wanted to concede anything.

Etymology

Origin of back-and-forth

First recorded in 1605–15

Example Sentences

That’s when “the arrows started flying,” recalled Victor Aguilar, who oversees the company’s $2 billion in annual R&D spending, referring to the yearslong back-and-forth to turn the new technology into a salable product.

From The Wall Street Journal • Jun. 22, 2026

As opposed to previous A.I.-powered breakthroughs that involved back-and-forth conversations between a chatbot and a human expert, this was cracked with a single prompt.

From Slate • Jun. 22, 2026

Though the Hauler is in the same class as long-haul trucks, Cohen said its primary use case will be for shorter, back-and-forth journeys.

From Los Angeles Times • Jun. 21, 2026

They’re interested in the wave of new stock market listings, many tied in some way to Wall Street’s fixation with all things AI, and the back-and-forth between Washington and Tehran about the war.

From Barron's • Jun. 12, 2026

Though he was nervous, the back-and-forth sounds made him laugh a little.

From "Messenger" by Lois Lowry