theoretically

adverb3

1. •
   in theory; on paper

   • I haven't tested it, but theoretically it ought to fly.
2. •
   in theory though not necessarily in reality.

   • Rumors of an indictment had spread through this heavily gay and lesbian community since shortly after the theoretically secret investigation began in 1984. — 1985
3. •
   in a theoretical manner

   • I solved the problem theoretically rather than practically.