necessary Antonyms

unnecessary self-imposed tangential tautologic trifling trivial uncalled-for undistinctive unessential unsubstantial unwarranted useless volitional surplus supplementary slight spare subordinate substract succedaneum 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