trivial Antonyms

significant important fundamental revered requisite required rememberable remarkable regulative structural regnant referential rare radical pulsive protrusile propulsive royal rubric storied staple splendid splasher spanner sovereign some sinewed signal shoving serious seismic sacred ruling propaedeutic prominent prognathous pregnant preeminent predominant precursive precessional portentous plasmic pivotal pertinent paramount overshadowing overriding overmost overbearing