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draw back, as with fear or pain;
"she flinched when they showed the slaughtering of the calf"
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come back to the originator of an action with an undesired effect;
"Your comments may backfire and cause you a lot of trouble"
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spring back; spring away from an impact;
"The rubber ball bounced"
"These particles do not resile but they unite after they collide"
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spring back, as from a forceful thrust;
"The gun kicked back into my shoulder"