important

important (Significant), adjective big, capital, chief, commanding, consequential, considerable, crucial, distinguished, esteemed, famous, far-reaching, first, foremost, formidable, grand, grave, gravis, high-level, imposing, impressive, influential, leading, magnus, main, majestic, major, marked, material, mattering much, memorable, mighty, momentous, notable, noteworthy, of great consequence, of great magnitude, of great weight, of high standing, of high station, of importance, outstanding, overshadowing, paramount, portentous, powerful, primary, prime, principal, prominent, relevant, salient, serious, signal, solemn, substantial, supreme, valuable, weighty, well-known

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important (Urgent), adjective acute, called for, clamorous, cogent, compelling, critical, crucial, demanding attention, driving, essential, exigent, impelling, imperative, importunate, in demand, indispensable, inescapable, instant, necessary, necessitous, needed, prerequisite, pressing, requested, required, unavoidable, vital, wanted

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See also: consequential, considerable, constructive, critical, crucial, decisive, determinative, essential, exigent, famous, germane, grave, illustrious, imperative, indispensable, influential, key, major, momentous, necessary, notable, noteworthy, outstanding, peremptory, potent, powerful, predominant, primary, prime, prominent, relevant, remarkable, renowned, requisite, salient, serious, special, strategic, substantial, substantive, unusual, urgent, valuable, vital