Opening
Opening adjective - First or beginning.
Underivative and opening are semantically related In some cases you can use "Underivative" instead an adjective "Opening".
Underivative
Underivative adjective - Not derivative or imitative.
Opening and underivative are semantically related in earliest topic. Sometimes you can use "Opening" instead an adjective "Underivative".
Mutual synonyms
Cite this Source
Underivative and Opening. (2016). Retrieved 2026, August 18, from https://thesaurus.plus/related/opening/underivative
Opening & Underivative. N.p., 2016. Web. 18 Aug. 2026. <https://thesaurus.plus/related/opening/underivative>.
Underivative or Opening. 2016. Accessed August 18, 2026. https://thesaurus.plus/related/opening/underivative.
Google Ngram Viewer shows how "opening" and "underivative" have occurred on timeline