blowback

/ˈbloʊˌbæk/
noun
  1. Unintended negative consequences or criticism resulting from an action or decision.
    • There was significant political blowback when the law was passed.
    • The celebrity received blowback for her controversial comments online.
    • The company faced major blowback from customers after raising prices.
  2. The escape of gas or pressure backward through a system, especially in a firearm or engine.
    • Blowback in the pipeline caused a small leak that needed repair.
    • A mechanic checked the engine for blowback from the exhaust system.
    • The gun's design prevents blowback from harming the shooter.
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