self destruct

/ˌsɛlfdɪˈstrʌkt/
verb
  1. To destroy oneself or itself automatically or deliberately, often by a built-in mechanism.
    • He watched his career self-destruct after the scandal broke.
    • After the mission, the drone will self-destruct to avoid capture.
    • The spy's device was programmed to self-destruct if tampered with.
  2. To ruin one's own life, relationships, or chances through reckless or harmful behavior.
    • The team seemed to self-destruct in the final minutes of the game.
    • She has a tendency to self-destruct whenever things are going well.
    • Instead of apologizing, he chose to self-destruct and push everyone away.
noun
  1. An act or instance of destroying oneself or itself, especially by a built-in mechanism.
    • The villain triggered the self-destruct of the entire base.
    • The movie ended with a dramatic self-destruct sequence.
    • The spaceship's self-destruct was activated as a last resort.