In theory
In theory adverb - With regard to fundamentals although not concerning details.
Unquestionably and in theory are semantically related. In some cases you can use "Unquestionably" instead an adverb phrase "In theory".
Unquestionably
Unquestionably adverb - Without any question.
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Synonyms for Unquestionably
In theory and unquestionably are semantically related. Sometimes you can use "In theory" instead an adverb "Unquestionably".
Cite this Source
Unquestionably and In theory. (2016). Retrieved 2026, July 27, from https://thesaurus.plus/related/in_theory/unquestionably
In theory & Unquestionably. N.p., 2016. Web. 27 Jul. 2026. <https://thesaurus.plus/related/in_theory/unquestionably>.
Unquestionably or In theory. 2016. Accessed July 27, 2026. https://thesaurus.plus/related/in_theory/unquestionably.
Google Ngram Viewer shows how "in theory" and "unquestionably" have occurred on timeline