<p><strong>Adjective</strong></p><ul><li>being within; inside of anything; internal; inner; further toward a center: the interior rooms of a house.</li><li>Antonyms: exterior</li><li>of or relating to that which is within; inside: an interior view.</li><li>situated well inland from the coast or border: the interior towns of a country.</li><li>of or relating to the inland.</li><li>domestic: interior trade.</li><li>private or hidden; inner: interior negotiations of the council.</li><li>pertaining to the mind or soul; mental or spiritual: the interior life.</li></ul><p><strong>Noun</strong></p><ul><li>the internal or inner part; inside.</li><li>Antonyms: exterior</li><li>Architecture: the inside part of a building, considered as a whole from the point of view of artistic design or general effect, convenience, etc.</li><li>a single room or apartment so considered.</li><li>a pictorial representation of the inside of a room.</li><li>the inland parts of a region, country, etc.: the Alaskan interior.</li><li>the domestic affairs of a country as distinguished from its foreign affairs: the Department of the Interior.</li><li>the inner or inward nature or character of anything.</li><li>Mathematics: the largest open set contained in a given set, as the points in a circle not including the boundary.</li></ul>