1. on or onto the stage of a theater

1. taking place on the stage of a theater
2. relating to a performer’s public persona or behavior in front of an audience

Examples

• The actor walked onstage to thunderous applause.
• She forgot her lines during the onstage performance.
• The dancers moved gracefully onstage under the bright lights.
• His onstage presence was commanding and confident.
• The onstage chemistry between the two leads was remarkable.
• She appeared nervous onstage but was relaxed backstage.
• The onstage action continued while stagehands worked behind the scenes.