Synonyms for Backfire (same or very similar meaning)
WordNet sense 1 (the backward escape of gases and unburned gunpowder after a gun is fired):
blowback
WordNet sense 2 (come back to the originator of an action with an undesired effect):
backlash, recoil, recoil
WordNet sense 3 (a miscalculation that recoils on its maker):
boomerang
From the ODE community, based on WordNet
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