Related Clues:

• Act with great feeling
• Overdo it, on stage
• Sell the scene, say
• Engage in histrionics
• Overexpress one's feelings, on stage
• Push the envelope, theatrically
• Not be deadpan
• Go into histrionics
• Laugh, perhaps
• Be moved by a stimulus
• Fake feelings
• Do a double take, say
• Hardly be stoical
• Jerk or frown, e.g.
• Gush on stage