Rationale
Theory
Theory noun - An idea that is the starting point for making a case or conducting an investigation.
Rationale is a synonym for theory in opinion topic. You can use "Rationale" instead a noun "Theory", if it concerns topics such as hypothesis. popular alternative
Mutual synonyms
Related pairs
How words are described
Both words in one sentence
- For works after 1991, there is a 50% chance of "the butterfly effect" and/or "chaos theory" being the rationale.
Source: Overused Sci Fi Plot Devices -
It Gets Easier: Pretty much the rationale behind the "red test", which forces wannabe agents to commit cold-blooded murder under orders and, in theory, make it easier for them to kill again when needs be.
Source: Series / Chuck
Cite this Source
Theory and Rationale. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/rationale/theory
Rationale & Theory. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/rationale/theory>.
Theory or Rationale. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/rationale/theory.
Google Ngram Viewer shows how "rationale" and "theory" have occurred on timeline