Related Clues:

• Promise son clothes
• Swear remedy needs to include sulphur
• Caught Gaelic as spoken word -- crude language
• Cornish listener's curse?
• Invocation of evil; swear
• Keep the censor busy
• Say '&#%@!'
• Use colorful language
• Be blasphemous
• Use vulgarities
• Shock the kiddies, perhaps
• Tomb raider's worry
• React to a hammered thumb
• Say some naughty words
• Show that you're leveling