<p><strong>Adjective</strong></p><ul><li>of much or great significance or consequence; an important event in world history</li><li>mattering much (usually followed by to): details important to a fair decision</li><li>entitled to more than ordinary consideration or notice; an important exception</li><li>prominent or large: He played an important part in national politics</li><li>of considerable influence or authority, as a person or position; an important scientist</li><li>having social position or distinction, as a person or family; important guests</li><li>pompous; pretentious: When speaking, he assumes an important attitude that offends his audience</li></ul><p><strong>Obsolete</strong></p><ul><li>importunate</li></ul>