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snap something back
to cause something to jerk back. The force of the crash snapped his head back and injured his neck. The crash snapped back his head.
snap back (on someone or something)
[for something] to be jerked back onto someone or something. The branch snapped back on Tim and left a welt on his arm. The whip snapped back and stung Tex's hand.
(at someone) to give a sharp or angry response to someone. The telephone operator, unlike in the good old days, snapped back at the caller. Please don't snap back. I've had a bad day.
Rebound from a setback, recover quickly, as in I think we'll snap back quickly from this business downturn. This idiom transfers the sudden release of tension on, for example, a branch to other kinds of recovery. [First half of 1900s]
1. To recover quickly: The patient snapped back quickly after surgery.
2. To utter a sharp retort: I asked a simple question, but the clerk snapped back with a mean remark.