Another word for important
Weighty; said usually of things
significant, considerable, momentous, essential, great, decisive, critical, determining, chief, paramount, primary, foremost, principal, major, big, consequential, influential, marked, salient, imperative, exigent, of great consequence, mattering much, of moment, earthshaking, portentous, ponderous, of importance, never to be forgotten, of note, valuable, crucial, substantial, material, meaningful, vital, serious, grave, relevant, pressing, far-reaching, extensive, conspicuous, heavy*, front-page*, standout*, smash*; see also necessary 1, urgent 1.
Eminent; said usually of persons
illustrious, influential, prominent, leading, great, notable, well-recognized, well-known, imposing, distinguished, prestigious, extraordinary, remarkable, powerful, noteworthy, signal, grand, outstanding, noted, noble, aristocratic, high-ranking, high-level, honored, esteemed, talented, distinctive, first-class, superior, foremost, big, major, big-league*, big-name*, top-notch*, solid*, four-star*, high-up*, high-powered*; see also dignified, distinguished 2, famous.