Of great significance or value:
— Important people.
— The important questions of the day.

synonym: of import.

Roget 31: great; greater etc. 33; large, considerable, fair, above par; big, huge etc. (large in size) 192; Herculean, cyclopean; ample; abundant; etc. (enough) 639 full, intense, strong, sound, passing, heavy, plenary, deep, high; signal, at its height, in the zenith.    world-wide, widespread, far-famed, extensive; wholesale; many etc. 102.    goodly, noble, precious, mighty; sad, grave, heavy, serious; far gone, arrant, downright; utter, uttermost; crass, gross, arch, profound, intense, consummate; rank, uninitiated, red-hot, desperate; glaring, flagrant, stark staring; thorough-paced, thoroughgoing; roaring, thumping; extraordinary.   ; important etc. 642; unsurpassed etc. (supreme) 33; complete etc. 52.    august, grand, dignified, sublime, majestic etc. (repute) 873.    vast, immense, enormous, extreme; inordinate, excessive, extravagant, exorbitant, outrageous, preposterous, unconscionable, swinging, monstrous, overgrown; towering, stupendous, prodigious, astonishing, incredible; marvelous etc. 870.    unlimited etc. (infinite) 105; unapproachable, unutterable, indescribable, ineffable, unspeakable, inexpressible, beyond expression, fabulous.    undiminished, unabated, unreduced^†, unrestricted.    absolute, positive, stark, decided, unequivocal, essential, perfect, finished.    remarkable, of mark, marked, pointed, veriest; noteworthy; renowned.    ... show more

Roget 175: influential, effective; important etc. 642; weighty; prevailing etc. v.; prevalent, rife, rampant, dominant, regnant, predominant, in the ascendant, hegemonical^†.    ... show more

Polish: niebłahy, istotny, znaczący, ważki, niebanalny, niebagatelny, ważny

Important in effect or meaning.

synonym: significant.

Roget 642: important; of importance etc. n.; momentous, material; to the point; not to be overlooked, not to be despised, not to be sneezed at; egregious; weighty etc. (influential) 175; of note etc. (repute) 873; notable, prominent, salient, signal; memorable, remarkable; unforgettable; worthy of remark, worthy of notice; never to be forgotten; stirring, eventful.    grave, serious, earnest, noble, grand, solemn, impressive, commanding, imposing.    urgent, pressing, critical, instant.    paramount, essential, vital, all-absorbing, radical, cardinal, chief, main, prime, primary, principal, leading, capital, foremost, overruling; of vital importance &c.. in the front rank, first-rate; superior etc. 33; considerable etc. (great) 31; marked etc. v.; rare etc. 137.    significant, telling, trenchant, emphatic, pregnant; tanti [Lat.].    ... show more

Of extreme importance; vital to the resolution of a crisis.

synonym: crucial.

Polish: ważny

Having authority or ascendancy or influence:
— An important official.

synonym: authoritative.

Having or suggesting a consciousness of high position.