ancillary Antonyms

significant protrusile propaedeutic prominent procreative principal primordial primogenial primary primal prime prevalent pressing prerequisite quintessential radical ranking signal serious seminal self-reliant salient sacred ruling respected requisite required reigning regulative regnant prepotent preponderant prepollent outstanding olea obligatory numerative numerary notable nonacid nodal needed necessitous necessary more momentous overbearing overmost overpowering premier