Important (noun) Definition, Meaning & Examples

adjective

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.
importunate.