/up"stayj"/ , adv., adj., v., upstaged, upstaging , n.
adv.
1. on or toward the back of the stage.
adj.
2. of, pertaining to, or located at the back of the stage.
3. haughtily aloof; supercilious.
v.t.
4. to overshadow (another performer) by moving upstage and forcing the performer to turn away from the audience.
5. to outdo professionally, socially, etc.
6. to behave snobbishly toward.
n.
7. the rear half of the stage.
8. any stage position to the rear of another.
[ 1905-10; UP- + STAGE ]