155 Synonyms & Antonyms of PRIMARY - Merriam-Webster
https://www.merriam-webster.com/thesaurus/primary
WebSynonyms for PRIMARY: main, greatest, predominant, highest, dominant, foremost, first, principal; Antonyms of PRIMARY: last, least, minor, secondary, unimportant, slight, negligible, trivial
DA: 18 PA: 90 MOZ Rank: 38