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UKback and forth
/bˈak and fˈɔːθ/
/bˈæk ænd fˈɔːɹθ/back and forth
[ADVERB]1
backward and forward; going in one direction and then in the opposite repeatedly
Examples
1. The cat's tail worked back and forth as it watched the bird outside.
2. Vibrate a piece of metal back and forth really fast: air pressure waves.
3. His head moves back and forth.
4. So just medium heat, low heat, go back and forth.
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