essential Antonyms

inessential nonessential unessential non-essential supplemental supplanter weed supervenient supernumerary superimposed superfluous supplementary surplus useless undistinctive trivial trifling token tertiary atonalism tautologic superficial superaddition succedaneum second residuary redundant qualifier pointless plectrum piddling pickaxe secondary slight substituent subsidiary subservient subordinate subalternate sub stand-by small picayune worthless least possible penlight overpayment off-site part-time liminal