backfire

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Pronunciation[change]

  • IPA: /bækˈfaɪə(ɹ)/

Verb[change]

Plain form
backfire

Third-person singular
backfires

Past tense
backfired

Past participle
backfired

Present participle
backfiring

  1. If an engine backfires, it experiences a premature ignition of fuel or exhaust gases, making a popping sound.
  2. If something backfires, it failed in a manner that brings an opposite and undesirable effect to what was intend.
    His attempt to make money by importing luxury cars backfired horribly when fuel prices tripled.

Noun[change]

Singular
backfire

Plural
backfires

  1. A backfire is 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.
  2. A backfire is an explosion in the exhaust passages of an internal combustion engine.