requisite Antonyms

adding on unacceptable trivial tertiary supplementary superfluous subordinate secondary plectrum pickaxe pickax optional unessential unfit unseemly plectron non-compulsory amexed amoral off-color unfitting unnecessary irrelevant unsuitable unimportant weed nonessential negligible cheating capricious boon black base auxiliary arbitrary ancillary advantage advanced accidental contemptible corrupt criminal needless minor luxury insignificant inessential incorrect inconsiderable inconsequential