First and Simplex

First

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

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

Nearby Word: firstly

Simplex

Simplex adjective - Having only one part or element.

First and simplex are semantically related. Sometimes you can use "First" instead an adjective "Simplex".
Cite this Source
Simplex and First. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/first/simplex
First & Simplex. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/first/simplex>.
Simplex or First. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/first/simplex.
Google Ngram Viewer shows how "first" and "simplex" have occurred on timeline