(theater) The part of a stage that is farthest from the audience or camera.

Toward or at the rear of a theatrical stage. / Away from the audience or camera.

At the rear of a stage. / (figuratively, obsolete) Haughty, aloof.

(figuratively, transitive) To draw attention away from others, especially on-stage. / (transitive, theater) To force other actors to face away from the audience by staying upstage.

Disruptive change, from one state to another. / The process of being heaved upward, especially the raising of part of the earth's crust. / A sudden violent upset, disruption or convulsion.

Maintenance; the act or effort of keeping something in good and working condition.

(transitive, Britain) To maintain (something) or keep it in good repair.

(idiomatic) Advantage or control.

The final result, or outcome of something. / (US) A concise summary.

Someone who upholds something. / (obsolete) A dealer in secondhand furniture and clothes; an upholdster.