To turn or twist something over quickly; to cause something to rotate or move rapidly from one position to another.
Origin uncertain, possibly from Dutch 'flippen' or related to 'flap.' The word became common in English by the 1600s and has remained relatively stable in meaning.
'Flip' is a perfect example of onomatopoeia's cousins—while not technically sound-imitative, it feels like the sound of something turning quickly, which is why it works so well for the action.
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