Related Clues:

• Uncontrollable movement
• Habitual jerk
• Remorseful feeling
• Hunger symptom
• First of three O's, perhaps
• -- Tac (breath mint)
• Start of a grid game
• Sudden, sharp pain
• Mental or emotional pang
• Habitual spasm
• Small spasmodic reaction
• Quirky habit
• Muscle jerk
• Nervous mannerism
• Sudden pain