Related Clues:

• Sentence modifier, at times
• Sackcloth and ashes
• Compunction
• Regret
• Ruefulness
• Sorrow
• 'The fatal egg by Pleasure laid': Cowper
• Sorry state
• Sorrowful feeling
• Self-reproach
• Contrite feeling
• Deep regret
• Deep contrition
• Contriteness
• Extreme guilt