Primary and Preliminary

Primary

Primary adjective - Coming before the main part or item usually to introduce or prepare for what follows.
Usage example: a few minutes of primary instruction in the use of our diving gear before we actually got into the water

Preliminary is a synonym for primary. In some cases you can use "Preliminary" instead the word "Primary" as an adjective or a noun.

Nearby Words: prime, prim, primarily, primal

Preliminary

Preliminary adjective - Coming before the main part or item usually to introduce or prepare for what follows.
Usage example: we need to do some preliminary research in order to properly focus the experiment

Primary is a synonym for preliminary in introductory topic. You can use "Primary" instead the word "Preliminary" as an adjective or a noun.
Cite this Source
Preliminary and Primary. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/primary/preliminary
Primary & Preliminary. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/primary/preliminary>.
Preliminary or Primary. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/primary/preliminary.
Google Ngram Viewer shows how "primary" and "preliminary" have occurred on timeline