required Antonyms

unrequested useless unseemly unfit unessential unacceptable trivial trifling supplanter supervenient supernumerary superfluous superaddition succedaneum substituent self-imposed secondary residuary voluntary unimportant unasked spare part non-compulsory unneeded imprecise non-essential part-time meter maid off-color pinch hitter unfitting locum extracurricular uncoerced unnecessary irrelevant unsuitable pointless parenthetical parenthetic expletive elective dispensable discretionary discretional causeless casual banned auxiliary ascititious