The adj important has 5 senses (first 4 from tagged texts)
1. (156) important, of import -- (of great significance or value; "important people"; "the important questions of the day")
2. (4) significant, important -- (important in effect or meaning; "a significant change in tax laws"; "a significant change in the Constitution"; "a significant contribution"; "significant details"; "statistically significant")
3. (2) crucial, important -- (of extreme importance; vital to the resolution of a crisis; "a crucial moment in his career"; "a crucial election"; "a crucial issue for women")
4. (1) authoritative, important -- (having authority or ascendancy or influence; "an important official"; "the captain's authoritative manner")
5. important -- (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")