preponderant Antonyms

additional unimportant irrelevant tinier footling smaller dinky dastardlier more minimal ignobler less considerable less astronomical less biggish less brobdingnagian less colossal less cumbersome less cumbrous less elephantine subsidiary subordinate secondary ancillary attendant auxiliary extra extraneous frivolous immaterial inconsequential inconsiderable inferior insignificant insubstantial less lesser lower minor peripheral less enormous