upstaging

adverb

adjective

1. of or having to do with the rear of a stage
2. haughtily or disdainfully aloof

transitive verb upstaged, upstaging

1. to draw the attention of the audience away from (a fellow actor) and to oneself by moving upstage so that the other actor must face away from the audience
2. to draw attention to oneself at the expense of (another) as by treating disdainfully