Related Clues:

• Avows
• Promises
• Takes an oath
• Curses
• Blasphemes
• Says with a raised hand
• Makes an oath?
• Says on a stack of Bibles
• Vows
• States under oath
• Uses indelicate language
• Takes oath or curses
• Curses or pledges
• Takes oath or utters imprecation (6)
• Being on oath, one may have it on in the ship