Source : WordNet®

offstage
     adj 1: situated or taking place in the area of a stage not visible
            to the audience; "offstage noises" [ant: {onstage}]
     2: withheld from public view or attention; "offstage political
        meetings"
     n : a stage area out of sight of the audience [syn: {wing}, {backstage}]
     adv 1: behind the scenes; not on stage; "the actors were waiting
            offstage" [ant: {onstage}]
     2: not in public; "the deal was done offstage"