1. a person who performs in plays, movies, or television shows
2. a person who takes part in or influences a particular situation or process
Usage: formal

Examples

• The actor memorized all his lines for the play.
• She became a famous actor after starring in several blockbuster movies.
• The young actor was nervous before his first audition.
• He studied acting for years before becoming a professional actor.
• The government is an important actor in economic policy.
• Several key actors were involved in the peace negotiations.
• The company emerged as a major actor in the technology sector.