Derivative
Derivative noun - Something that naturally develops or is developed from something else.
Usage example: the whole field of industrial robots is a derivative of technology developed for the space program
Reason is an antonym for derivative.
Reason
How words are described
Both words in one sentence
- The M16's direct-impingement gas operation has fallen to the same reputation, accused of being or implied to be the sole reason any issues exist in weapons that use it, and almost every AR-15 derivative has used a gas piston instead.
Source: Never Live It Down / Real Life -
Follow the Leader: Part of the reason why the Externals never really took off is how, aside from Gideon, most of them were derivative of other, more popular characters in appearance.
Cite this Source
Reason and Derivative. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/derivative/reason
Derivative & Reason. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/derivative/reason>.
Reason or Derivative. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/derivative/reason.
Google Ngram Viewer shows how "derivative" and "reason" have occurred on timeline