backfire - noun

the backward escape of gases and unburned gunpowder after a gun is fired

a loud noise made by the explosion of fuel in the manifold or exhaust of an internal combustion engine

a fire that is set intentionally in order to slow an approaching forest fire or grassfire by clearing a burned area in its path

a miscalculation that recoils on its maker

backfire - verb

• come back to the originator of an action with an undesired effect
• emit a loud noise as a result of undergoing a backfire
• set a controlled fire to halt an advancing forest to prairie fire

backfire - thesaurus

backlash   blowback   boomerang   recoil