necessary Antonyms

unnecessary secondary tangential tautologic trifling trivial uncalled-for undistinctive unessential unsubstantial unwarranted useless volitional surplus supplementary self-imposed slight spare subordinate substract superaddition supererogatory superficial superfluous supernumerary supervenient supplanter voluntary weed expendable unneeded overpayment penlight plectron spare part unasked unconsumed unrequested unsolicited unwanted non-essential nurtural nonmandatory WEFT woof unimportant irrelevant uncoerced incidental fill-in