1. action or dialogue that is secondary to the main action, especially in a dramatic performance
Usage: theatrical
2. incidental or secondary activity happening alongside the main event

Examples

• The actors’ byplay during the main character’s speech added depth to the scene.
• While the politicians debated, there was interesting byplay among the audience members.
• The director encouraged natural byplay between the supporting characters.
• The byplay between the two comedians made the show more entertaining.
• During the meeting, the byplay at the back of the room was distracting.
• The stage directions called for subtle byplay during the monologue.