What are the opposite words for secondary?

Primary is an antonym for the word "secondary." Primary refers to something that is first in importance or order, whereas secondary indicates something that is second in importance. Another antonym for secondary could be main or principal, which signifies the most important aspect of something. However, on the contrary, secondary represents something of less importance or significance. Additionally, another antonym of secondary is primary, suggesting that a particular element or thing is the most important or primary in a given context. Therefore, while secondary denotes something less important, its antonyms like primary, main, or principal indicate utmost significance.