adverb

In or to the backstage area in a theater.

I went backstage after the show

unobtrusive,unnoticeable,unremarkable,unspectacular,unostentatious,unimposing,undistinguished,unexceptional,modest,unassuming,discreet,hidden,concealed

adjective

Relating to or situated in the area behind the stage in a theater.

a backstage tour of the opera house

noun

The area in a theater out of view of the audience, especially in the wings or dressing rooms.

backstage was the scene of pleasant pandemonium