prime Antonyms

postmeridian sundown sunset superaddition superfluous supernumerary supervenient supplanter supplemental supplementary terrible tributary trifling trivial unessential unpleasant succedaneum substitutive substituent proletariat raff residuary rotten scum second secondary second-class second-rate senectitude side so-so subalternate subjunctive subordinate unwashed vile wanting small-time non-U nurtural unsatisfactory part-time substandard deprime penlight ragtag and bobtail second best second string spare part subpar