theoretically

[ thee-uh-ret-ik-lee ]

adverb

1. in principle; according to reasonable assumptions or rules, as opposed to what actually happens:

   Theoretically they are free to work, but in practice they can’t because we do not recognize their credentials.

2. in a way that is purely speculative; hypothetically:

   It seems that theoretically the central bank could constrain government spending by allowing treasury checks to bounce.

3. according to, or in a way that relates to, a scientific theory:

   An alloy with a particular composition can be modeled to determine theoretically whether it has suitable mechanical and physical properties for medical applications.

4. in a way that relates to the set of principles or methods belonging to a particular subject, art, or activity:

   Taking classes in all four fields—politics, economics, history, and culture—allows students to be grounded theoretically in the humanities and social sciences.

Other Words From

• an·ti·the·o·ret·i·cal·ly adverb
• non·the·o·ret·i·cal·ly adverb
• un·the·o·ret·i·cal·ly adverb

Word History and Origins

Origin of theoretically¹

theoretical ( def ) + -ly

Example Sentences

The word “multidisciplinary” is such a dry, academic term for art that, theoretically, should feel more like a three-dimensional, surround-sound fireworks show.

From Los Angeles Times

Others have tried bracelets that emit smells that sharks, theoretically, would find repulsive.

From Los Angeles Times

Earlier this year, Taylor and Mehrtens moved to the U.S. and found places in L.A., while the others theoretically remain based in Melbourne.

From Los Angeles Times

That theoretically would require a filibuster-proof majority in the Senate.

From Slate

Quite apart from the fact that the academy is an accredited academic institution that theoretically should uphold freedom of thought, the U.S.

From Salon