- back-and-forth: to-and-fro motion.
- a continuous or regular movement backward and forward; an alternating movement, flux, flow, etc.: the to-and-fro of the surf.
Origin of to-and-fro
First recorded in 1820–30; adj. and noun use of adv. phrase to and (fro)(def 2)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for to-and-fro
After a few hours of to-and-fro with his commander, the squad was given permission to do what they wanted with him.Syria: From the Gap to the Firing Squad
August 16, 2012
What is that to-and-fro between one who knows and one who does not?Herein is Love
Reuel L. Howe
With this was sent a whip, thus establishing a to-and-fro communication.The Pillar of Light
The to-and-fro movement of the slide is effected in the following manner.Sharps and Flats
John Nevil Maskelyne
We will suppose our pendulum to execute one to-and-fro movement in a second.Popular scientific lectures
Back again he came, to-and-fro like the pendulum of a clock.The Men of the Moss-Hags
S. R. Crockett