Possible Clues:

• "Sacrebleu!" relative
• Exclamation from Poirot
• Parisian's 'My God!'
• "Sacré bleu!" kin
• 'Sacré bleu!' kin
• Stereotypical French exclamation
• Kin of "Sacre bleu!"
• "Oh no!" from Poirot
• Hugo shout
• My Goodness, is this how Paris prayed to his god at Troy?