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  • interior
    interior
    adjective
    being within; inside of anything; internal; inner; further toward a center.
  • Interior
    Interior
    noun
    (in titles) the domestic or internal affairs of any of certain countries
Synonyms

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

interiors plural
  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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Interior 2 British  
/ ɪnˈtɪərɪə /

noun

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

    Department of the Interior

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Synonym Usage

See inside.

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of interior

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

Keep Reading on Vocabulary.com

Vocabulary lists containing interior

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

By combining the simulation results with spacecraft observations, the researchers conclude that Venus has a more active and dynamic interior than previously assumed.

From Science Daily Jul. 25, 2026

One firefighter died after falling ill while battling the flames in Sicily, the interior minister said.

From Barron's Jul. 24, 2026

Garrett joins a front that includes outside linebacker Byron Young and interior linemen Kobie Turner, Braden Fiske, Poona Ford and ….

From Los Angeles Times Jul. 23, 2026

This has been echoed by former interior ministry adviser Oleksiy Kopytko.

From BBC Jul. 22, 2026

Or their interior computer brain went completely buggy and they were no longer able to communicate with Earth.

From "A Rover's Story" by Jasmine Warga

Interior Minister Laurent Nunez said the blaze would be a long battle and that evacuated residents would not be allowed to return until the fire was contained.

From Barron's Jul. 26, 2026

French Interior Minister Laurent Nunez said the country had never before seen such fires on this scale.

From Barron's Jul. 25, 2026

The order directs the Department of Interior to issue the warnings, and also to direct people about where they can find "accurate information regarding America's history".

From BBC Jul. 25, 2026

Interior Minister Laurent Nuñez posted photos from an event that took place on Wednesday - the day after their deaths were announced.

From BBC Jul. 23, 2026

Interior Secretary Harold L. Ickes greets Marian Anderson before introducing her to an outdoor audience of some 75,000 people.

From "The Voice That Challenged a Nation: Marian Anderson and the Struggle for Equal Rights" by Russell Freedman

Now, it has returned to the market for the same $12.99 million asking price—but with a stunning collection of new listing photos that fully showcase its reimagined interiors and its grounds.

From MarketWatch Jul. 13, 2026

Similar experimental systems have long been used to study how heat moves through slow moving materials, making them useful stand ins for the rocky interiors of planets.

From Science Daily Jul. 9, 2026

"Other schedule risks remain, including the detailed designs for the aircraft interiors, fabrication of the wire bundles, and rework to correct defects in structural modifications," the report said.

From Barron's Jul. 2, 2026

But more complex, customized seat designs and new materials are raising new questions for regulators, said Gary Weissel, a consultant who has assisted airlines in developing, certifying and installing new interiors.

From The Wall Street Journal Jun. 28, 2026

It was bad not because it brought growth, that was good, but because it raised from dark interiors the restless, wild urges that lay sleeping all winter.

From "Bless Me, Ultima" by Rudolfo Anaya

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