let fly vs outrage

let fly

verb
  • To unleash an angry outburst. 

  • To strike or release a projectile with great force. 

  • She was furious and let fly at him with a string of obscenities. 

outrage

verb
  • To inspire feelings of outrage in. 

  • To cause or commit an outrage upon; to treat with violence or abuse. 

noun
  • The resentful, indignant, or shocked anger aroused by such acts. 

  • An excessively violent or vicious attack; an atrocity. 

  • An offensive, immoral or indecent act. 

How often have the words let fly and outrage occurred in a corpus of books? (source: Google Ngram Viewer )