Definition of BACKFIRE

backfire

Plural: backfires

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
  • Alternative spelling of back fire.
  • A premature explosion in the cylinder of a gas or oil engine during the exhaust or the compression stroke, tending to drive the piston in the wrong direction.
  • An explosion in the exhaust passages of an internal combustion engine.
  • An explosion in other equipment.

Verb

Verb Forms: backfired, backfiring, backfires

  • To have an unintended and unwelcome result opposite to what was planned.
  • come back to the originator of an action with an undesired effect
    • "Your comments may backfire and cause you a lot of trouble"
  • emit a loud noise as a result of undergoing a backfire
    • "My old car backfires all the time"
  • set a controlled fire to halt an advancing forest to prairie fire
  • To fire in the opposite direction, for example due to an obstruction in the barrel.
  • To experience a premature ignition of fuel or an ignition of exhaust gases, making a popping sound.
  • To fail in a manner that brings down further misfortune.
  • To set a back fire (small, controlled fire to limit spread of a larger fire).

Examples

  • Her plan backfired on her.
  • His attempt to block me on the triple-word score would backfire magnificently.
  • His attempt to make money by importing luxury cars backfired horribly when fuel prices tripled.

Origin / Etymology

From back + fire.

Scrabble Score: 19

backfire: valid Scrabble (US) TWL Word
backfire: valid Scrabble Word in Merriam-Webster MW Dictionary
backfire: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 21

backfire: valid Words With Friends Word