Related Clues:

• Say "#@%!"
• Promise from Sunday Sport
• Say naughty words
• Offend the innocents
• Use indelicate words
• Promise wears badly
• Vow to ignore men in suits?
• Use profaniity
• Shock the prudes
• Be censored?
• Say on a stack of Bibles
• Make a vow
• Get bleeped, maybe
• Say "&*$@!"
• Solemnly promise to utter obscenities