IMPORTANT
crucial, important
(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”
important, of import
(adjective) of great significance or value; “important people”; “the important questions of the day”
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”
authoritative, important
(adjective) having authority or ascendancy or influence; “an important official”; “the captain’s authoritative manner”
significant, important
(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”
Source: WordNet® 3.1
Etymology
Adjective
important (comparative more important, superlative most important)
Having relevant and crucial value.
(obsolete) Pompous; self-important.
Synonyms
• significant
• weighty
• See also important
Antonyms
• negligible
• ignorable
• petty
• slight
• unimportant
Source: Wiktionary
Im*por"tant, a. Etym: [F. important. See Import, v. t.]
1. Full of, or burdened by, import; charged with great interests;
restless; anxious. [Obs.]
Thou hast strength as much As serves to execute a mind very
important. Chapman.
2. Carrying or possessing weight or consequence; of valuable content
or bearing; significant; weighty.
Things small as nothing . . . He makes important. Shak.
3. Bearing on; forcible; driving. [Obs.]
He fiercely at him flew, And with important outrage him assailed.
Spenser.
4. Importunate; pressing; urgent. [Obs.] Shak.
Syn.
– Weighty; momentous; significant; essential; necessary;
considerable; influential; serious.
Source: Webster’s Unabridged Dictionary 1913 Edition