let fly

/L EH1 T F L AY1/
verb
  1. 1

    To strike or release a projectile with great force.

  2. 2

    To unleash an angry outburst.

    โ€œShe was furious and let fly at him with a string of obscenities.โ€

Source: https://en.wiktionary.org/wiki/let%20fly