Established
Established adjective - Brought about or set up or accepted; especially long established.
Theoretical is an antonym for established.
Nearby Words: establishment, establishing
Theoretical
Theoretical adjective - Existing only as an assumption or speculation.
Usage example: the merits of the new testing procedures are purely theoretical, since no one has ever used them before
Established is an antonym for theoretical.
Both words in one sentence
- By the time he returned to America, he had published several articles and had established his reputation as a theoretical physicist, making his mark on quantum theory.
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Lane's genius and his foolishness at the same time - He's at least twenty years ahead of his time, having built an A-bomb before Einstein established the theoretical framework for how it would work, but he also doesn't realize how dangerous the thing is.
Source: Film / The Shadow
Cite this Source
Theoretical and Established. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/established/theoretical
Established & Theoretical. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/established/theoretical>.
Theoretical or Established. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/established/theoretical.
Google Ngram Viewer shows how "established" and "theoretical" have occurred on timeline