To scream blue murder is to shout loudly and make a huge fuss, sometimes with the implication that the fuss is excessive. But does anyone know why murder should be blue?
Answer
According to Wiktionary, it comes from the French curse word “morbleu“, which in turn is a euphemism for “mort de Dieu” (i.e. “death of God”). Most French profanity involves blasphemy.
Attribution
Source : Link , Question Author : Brian Hooper , Answer Author : splicer
