Back
Back adverb - Toward the rear.
Usage example: staring back, the newly convicted felon vowed revenge
Forth
Forth adverb - Toward or at a point lying in advance in space or time.
Usage example: go forth into the world with love and hope
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Synonyms for Forth
Both words in one sentence
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Similarly enough, the Bjork music video Hunter had her changing back and forth into a bear and back into herself.
Source: Our Werebeasts Are Different -
In The Will Be Done, Praen brings himself back from being not just dead, but vaporized; and travels back and forth from heaven a few times.
Source: Back from the Dead -
By shaking the tube back and forth, the contents would be shifted back and forth between the sides of the tube, further mixing the fluids instead of separating them.
Source: Series / The Flash (2014)
Cite this Source
Forth and Back. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/back/forth
Back & Forth. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/back/forth>.
Forth or Back. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/back/forth.
Google Ngram Viewer shows how "back" and "forth" have occurred on timeline