Upstage is a compound of up plus stage; from the theatrical practice of an actor moving to the rear (upper) part of the stage, forcing others to turn their backs to the audience. In current use it is a verb, adjective, and adverb meaning "to draw attention away from another, especially to outshine them". That sense is explained by the older material without requiring a speculative semantic step: the inherited or borrowed base supplies the field of meaning, while the English formation fixes its modern role. The surface form is compositional: its joined elements remain visible in the modern word. The historical chain includes Old English up and Old French estage. Related English forms include stage and up. The word's history is thus visible in its construction: the components remain interpretable even after the whole expression has settled into a conventional English meaning.