First
First adjective - Coming before all others in time or order.
Usage example: the much-studied first—and last—voyage of the Titanic
Primary is a synonym for first in initial topic. In some cases you can use "Primary" instead the word "First" as an adjective or a noun, when it comes to topics like original, start, principal, important. popular alternative
Nearby Word: firstly
Primary
Primary adjective - Coming before all others in importance.
Usage example: the primary concern for many house hunters is the asking price
First is a synonym for primary in original topic. You can use "First" instead the word "Primary" as an adjective or a noun, if it concerns topics such as initial, chief, position, start. popular alternative
Mutual synonyms
Cite this Source
Primary and First. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/first/primary
First & Primary. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/first/primary>.
Primary or First. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/first/primary.
Google Ngram Viewer shows how "first" and "primary" have occurred on timeline