Logic
Logic noun - The thought processes that have been established as leading to valid solutions to problems.
Usage example: I tried to use logic to figure out the solution to the puzzle
Reason is a synonym for logic in mental condition topic. In some cases you can use "Reason" instead a noun "Logic", when it comes to topics like evidence, rationalism. popular alternative
Reason
Reason noun - The thought processes that have been established as leading to valid solutions to problems.
Usage example: in a time of national crisis we need to listen to the voice of reason
Logic is a synonym for reason in sense topic. You can use "Logic" instead a noun "Reason", if it concerns topics such as evidence, rationalism, rationality, mental analysis. popular alternative
Mutual synonyms
How words are described
Both words in one sentence
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Similarly in Soul Music, Susan is raised to be a "sensible" girl, trained in reason and logic and not believe "such nonsense", which is ultimately futile once you realize who her grandfather is.
Source: Arbitrary Skepticism -
Indeed, this has led many games (especially later games) to have double jumping as just standard issue, with no reason or logic; for these games, it's just how jumping works.
Source: Double Jump -
Subverted in Star Control 3 by the Daktaklakpak, highly irrational semi-sentient robots who consider themselves the pinnacle of logic and reason.
Source: Logic Bomb
Cite this Source
Reason and Logic. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/logic/reason
Logic & Reason. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/logic/reason>.
Reason or Logic. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/logic/reason.
Google Ngram Viewer shows how "logic" and "reason" have occurred on timeline