interior

American  

[in-teer-ee-er] / ɪnˈtɪər i ər /

adjective

1. being within; inside of anything; internal; inner; further toward a center.

   the interior rooms of a house.

   Antonyms:

   exterior

2. of or relating to that which is within; inside.

   an interior view.

3. situated well inland from the coast or border.

   the interior towns of a country.

4. of or relating to the inland.

5. domestic.

   interior trade.

6. private or hidden; inner.

   interior negotiations of the council.

7. pertaining to the mind or soul; mental or spiritual.

   the interior life.

---

noun

1. the internal or inner part; inside.

   Antonyms:

   exterior

2. Architecture.

   1. the inside part of a building, considered as a whole from the point of view of artistic design or general effect, convenience, etc.

   2. a single room or apartment so considered.

3. a pictorial representation of the inside of a room.

4. the inland parts of a region, country, etc..

   the Alaskan interior.

5. the domestic affairs of a country as distinguished from its foreign affairs.

   the Department of the Interior.

6. the inner or inward nature or character of anything.

7. Mathematics. the largest open set contained in a given set, as the points in a circle not including the boundary.

interior ¹ British  

/ ɪnˈtɪərɪə /

noun

1. a part, surface, or region that is inside or on the inside

   the interior of Africa

2. inner character or nature

3. a film or scene shot inside a building, studio, etc

4. a picture of the inside of a room or building, as in a painting or stage design

5. the inside of a building or room, with respect to design and decoration

---

adjective

1. of, situated on, or suitable for the inside; inner

2. coming or acting from within; internal

3. of or involving a nation's domestic affairs; internal

4. (esp of one's spiritual or mental life) secret or private; not observable

Interior ² British  

/ ɪnˈtɪərɪə /

noun

1. (in titles) the domestic or internal affairs of any of certain countries

   Department of the Interior

---

Related Words

See inside.

Other Word Forms

• interiority noun
• interiorly adverb

Etymology

Origin of interior

First recorded in 1480–90; from Latin, comparative adjective equivalent to inter- “inward” + -ior comparative suffix; exterior

Explanation

Interior commonly refers to the inside of something. When house hunting you might find that the outside of the house is run down, but the interior rooms beautifully renovated. If you design the color scheme of a room and pick our furnishings for it, you are an interior designer. If you delve into a characters feelings and emotions, you might describe what you're looking at as their interior. A place that lies far inland from a coast or border is said to lie in the interior of a country. If you talk to yourself inside your mind, you are said to be having an interior monologue.

Example Sentences

The interior is a 20th-century affair, gutted and rebuilt under the Truman administration.

From The Wall Street Journal • Apr. 10, 2026

You could, for example, book a return voyage on the Queen Mary for $2,500 per person for an interior cabin.

From MarketWatch • Apr. 9, 2026

The two injured attackers were named as Onur Ç and Enes Ç, who the interior ministry said were brothers.

From BBC • Apr. 7, 2026

The interior ministry did not immediately respond to a request for comment about such a move.

From Barron's • Apr. 6, 2026

I’d seen their megascreen advertisements along hoverways showing a ship’s five-star hotel interior.

From "The Last Cuentista" by Donna Barba Higuera

Related Words

• internal
• remote