First and Underivative

First

First adjective - Coming before all others in time or order.

Underivative and first are semantically related In some cases you can use "Underivative" instead an adjective "First".

Nearby Word: firstly

Underivative

Underivative adjective - Not derivative or imitative.

First and underivative are semantically related in ancient topic. You can use "First" instead an adjective "Underivative", if it concerns topics such as basic, earliest.
Cite this Source
Underivative and First. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/first/underivative
First & Underivative. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/first/underivative>.
Underivative or First. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/first/underivative.
Google Ngram Viewer shows how "first" and "underivative" have occurred on timeline