omissible Antonyms

carrying a lot of weight impressive impressionistic important imperative imminent ideographic heavy glaring fundamental figural fated extraordinary expressive incumbent indicative indicatory incumbent on inerrant de rigueur necessary mandatary infallible inexorable inevitable inevasible inescapable ineludible ineluctable indispensable expository explicatory considerable consequential compulsory compelling chief certain cardinal binding BIG basic assured associational appreciable conspicuous crucial decisive expedient exigent