[adj] of extreme importance; vital to the resolution of a crisis; "a crucial moment in his career"; "a crucial election"; "a crucial issue for women"
[adj] of great significance or value; "important people"; "the important questions of the day"
[adj] having or suggesting a consciousness of high position; "recited the decree with an important air"; "took long important strides in the direction of his office"
[adj] having authority or ascendancy or influence; "an important official"; "the captain's authoritative manner"
[adj] important in effect or meaning; "a significant change in tax laws"; "a significant change in the Constitution"; "a significant contribution"; "significant details"; "statistically significant"
all important(p), all-important(a), alpha, arch(a), authoritative, big, boss(a), burning(a), cardinal, central, chief(a), consequential, Copernican, critical, crucial, decisive, distinguished, earthshaking, eminent, epochal, epoch-making, eventful, eviden