Related Clues:

• Solemnly swear
• Undertaking
• Scream ''#@$%!''
• Potential
• Turn blue?
• Use four-letter words
• Oath
• Declare flat out
• It may be taken with a raised hand
• Turn the air blue
• Say '@#$%!'
• 'I do,' at the altar
• 'You swear?'
• Blaspheme
• Betroth