Modifies a noun

• noise: Speaker names, sound effects and offstage noises are also shown.

• voice: A countdown by an offstage voice suggests that something dreadful will be expected of them or done to them in an hour or less.

• stuff: The process of Western theater has been about importing more and more of this offstage stuff and showing it or putting it onstage.

• sound: It would also have been advantageous to have the offstage sound of a boisterous brownie pack to set the piece at the opening.