{f} move upstage causing another actor to turn his back to the audience (Theatre); draw attention away from another, steal the show; treat someone haughtily
If someone upstages you, they draw attention away from you by being more attractive or interesting. He had a younger brother who always publicly upstaged him. to do something that takes people's attention away from someone else who is more important
When an actor is upstage or moves upstage, he or she is or moves towards the back part of the stage. Upstage and right of centre, Robert Morris stands with his back to the audience Position a camera upstage They slowly moved from upstage left into the centre. downstage Upstage is also an adjective. the large upstage box that Noble used for his 1990 production of King Lear. downstage
move (another actor) upstage, forcing him to turn away from the audience treat snobbishly, put in one's place of the back half of a stage; "she crossed to the upstage chair forcing the lead to turn his back to the audience"