verb

backfire

to backfire, to have an unintended negative result

His plan to get a promotion backfired.

His plan to get a promotion backfired.

The old car's engine backfired loudly.

The old car's engine backfired loudly.

(a plan/action) backfires to have an unintended negative result His plan to get a promotion backfired.

(an engine) backfires to undergo a mistimed explosion in the cylinder The old car's engine backfired loudly.

Synonyms: boomerang, rebound, fail

From 'back' + 'fire'. It originates from early firearms that could accidentally 'fire' out the 'back' towards the shooter.

Imagine a gun firing backwards instead of forwards. This is what happens when a plan 'backfires'—it hurts you instead of helping.

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