overact (v.)

• affect
• assume
• counterfeit
• declaim
• dramatize
• exaggerate
• exhaust
• fake
• feign
• grimace
• ham
• mug
• overdo
• overdramatize
• overdrive
• overemphasize
• overexert
• overindulge
• overplay
• overreact
• overspend
• overstrain
• overstress
• overtax
• overuse
• overwork
• play
• playact
• pretend
• rant
• roar
• sham
• simulate
• spout
• underact
• wear