- of much or great significance or consequence: an important event in world history.
- mattering much (usually followed by to): details important to a fair decision.
- entitled to more than ordinary consideration or notice: an important exception.
- prominent or large: He played an important part in national politics.
- of considerable influence or authority, as a person or position: an important scientist.
- having social position or distinction, as a person or family: important guests.
- pompous; pretentious: When speaking, he assumes an important attitude that offends his audience.
- Obsolete. importunate.
- lacking in significance or valueunimportant matters
- of great significance or value; outstandingVoltaire is an important writer
- of social significance; notable; eminent; esteemedan important man in the town
- (when postpositive, usually foll by to) specially relevant or of great concern (to); valued highly (by)your wishes are important to me
- an obsolete word for importunate
adj.1750, from un- (1) “not” + important. Used earlier in a sense of “unassuming, modest” (1727). Related: Unimportantly. adj.mid-15c., from Middle French important and directly from Medieval Latin importantem (nominative importans), present participle of importare “be significant in,” from Latin importare “bring in” (see import). Related: Importantly.