Synonyms and related words :
Gargantuan, absolute, adducible, admissible, amplitudinous, ascendant, astronomical, attestative, attestive, authentic, authoritarian, authoritative, authorized, autocratic, awe-inspiring, awesome, based on, big, binding, boundless, bulky, burdensome, certain, charismatic, charming, circumstantial, clothed with authority, cogent, colossal, commanding, competent, conclusive, consequential, considerable, consistent, controlling, convincing, corpulent, cosmic, cumbersome, cumbrous, cumulative, damning, decisive, decorous, demanding, demure, determinative, dignified, documentary, documented, dominant, duly constituted, earnest, effective, effectual, efficacious, elevated, eminent, empowered, enchanting, enormous, estimable, evidential, evidentiary, ex officio, ex parte, exacting, exhausting, exigent, extensive, eye-witness, factual, fat, fatal, fateful, final, firsthand, fleshy, formal, formidable, founded on, frowning, galactic, gigantic, good, governing, grand, grave, great, grievous, grim, grim-faced, grim-visaged, grinding, gross, grounded on, harsh, hearsay, heavy, heavyweight, hefty, hegemonic, hegemonistic, huge, immeasurable, immense, imperative, implicit, important, imposing, incontrovertible, indicative, indisputable, infinite, influential, inspiring, irrefutable, irresistible, just, king-size, large, lawful, leaden, leading, legal, legitimate, lofty, logical, long-faced, magnetic, majestic, mammoth, massive, massy, material, meaningful, mighty, momentous, monocratic, monster, monstrous, monumental, mountainous, moving, no-nonsense, noble, nuncupative, obese, official, onerous, oppressive, outsize, overburdensome, overgrown, overweight, overwhelming, personable, persuasive, ponderous, portentous, portly, potent, powerful, preeminent, prestigious, presumptive, probative, prodigious, prominent, puissant, ranking, reliable, reputable, ruling, sedate, self-consistent, senior, serious, severe, significant, sizable, sober, sober-minded, sobersided, solemn, solid, somber, sound, spacious, staid, stately, stone-faced, stout, straight-faced, strong, stupendous, suasive, sublime, substantial, sufficient, suggestive, superincumbent, superior, supreme, sure, symptomatic, taxing, telling, thoughtful, titanic, totalitarian, tough, tremendous, tyrannous, unsmiling, valid, vast, voluminous, wearing, wearying, well-founded, well-grounded, winning