primary Antonyms

secondary slight superfluous supernumerary supervenient supplanter supplemental supplementary tattered tertiary tributary trifling trivial under superficial superaddition supe small subalternate subordinate subsequent subsidiary substituent substitute substitutional substitutive substract substructure succedaneum undistinctive unessential footling low-grade meter maid photocopy undistinguished nurtural liminal penlight plagiaristic second string spare part thirdhand unconsumed bottommost pinch hitter utility vicarial vicariously vicegerent