fundamental Antonyms

slight supersession supervenient supplanter supplemental supplementary synecdoche tautologic tertiary topmost trifling trivial undistinctive unessential supernumerary superincumbent small stand-by subalternate subordinate subsidiary substituent substituting substitution substitutional substitutive superaddition superficial superfluous upper vicariously vicegerent penny ante meter maid photocopy small-time nurtural higher liminal non-essential penlight plagiaristic spare part tinpot unconsumed lightweight pinch hitter weed unimportant irrelevant