'Important' definitions:

Definition of 'important'

(from WordNet)
adjective
Of great significance or value; "important people"; "the important questions of the day" [syn: important, of import] [ant: unimportant]
adjective
Important in effect or meaning; "a significant change in tax laws"; "a significant change in the Constitution"; "a significant contribution"; "significant details"; "statistically significant" [syn: significant, important] [ant: insignificant, unimportant]
adjective
Of extreme importance; vital to the resolution of a crisis; "a crucial moment in his career"; "a crucial election"; "a crucial issue for women" [syn: crucial, important] [ant: noncrucial]
adjective
Having authority or ascendancy or influence; "an important official"; "the captain's authoritative manner" [syn: authoritative, important]
adjective
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"

Definition of 'Important'

From: GCIDE
  • Important \Im*por"tant\, a. [F. important. See Import, v. t.]
  • 1. Full of, or burdened by, import; charged with great interests; restless; anxious. [Obs.] [1913 Webster]
  • Thou hast strength as much As serves to execute a mind very important. --Chapman. [1913 Webster]
  • 2. Carrying or possessing weight or consequence; of valuable content or bearing; significant; weighty. [1913 Webster]
  • Things small as nothing . . . He makes important. --Shak. [1913 Webster]
  • 3. Bearing on; forcible; driving. [Obs.] [1913 Webster]
  • He fiercely at him flew, And with important outrage him assailed. --Spenser. [1913 Webster]
  • 4. Importunate; pressing; urgent. [Obs.] --Shak.
  • Syn: Weighty; momentous; significant; essential; necessary; considerable; influential; serious. [1913 Webster]