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back·fire

ˈbakˌfī(ə)r/

verb

1. 1. 

   (of an engine) undergo a mistimed explosion in the cylinder or exhaust.

   "a car backfired in the road"

   synonyms:

   rebound, boomerang, come back;  fail, miscarry, go wrong;  informalblow up in someone's face "Bernard's plan backfired"

2. 2. 

   (of a plan or action) rebound adversely on the originator; have the opposite effect to what was intended.

   "overzealous publicity backfired on her"

   synonyms:

   rebound, boomerang, come back;  fail, miscarry, go wrong;  informalblow up in someone's face "Bernard's plan backfired"

noun

1. 1. 

   a mistimed explosion in the cylinder or exhaust of a vehicle or engine.
2. 2. 

   NORTH AMERICAN

   a fire set intentionally to arrest the progress of an approaching fire by creating a burned area in its path, thus depriving the fire of fuel.