1.of the back half of a stage;
she crossed to the upstage chair forcing the lead to turn his back to the audience
2.remote in manner;
stood apart with aloof dignity
3.at or toward the rear of the stage;
the dancers were directed to move upstage
1.treat snobbishly, put in one's place
2.move (another actor) upstage, forcing him to turn away from the audience
3.steal the show, draw attention to oneself away from someone else;
When the dog entered the stage, he upstaged the actress