1. something that someone does; an action
2. a law passed by a government
3. one of the main divisions of a play or opera

1. to do something; to take action
2. to behave in a particular way
3. to perform a role in a play, movie, or show

Examples

• You need to act quickly before it’s too late.
• She always acts politely around her teachers.
• He wants to act in movies when he grows up.
• Stealing is a criminal act.
• Congress passed the Civil Rights Act in 1964.
• The play has three acts and five scenes.
• The comedian’s act made everyone laugh.