indoor

adjective

in·​door ˈin-ˈdȯr How to pronounce indoor (audio)
Synonyms of indoornext
1
: of or relating to the interior of a building
2
: living, located, or carried on within a building
an indoor sport

Examples of indoor in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
There’s also an indoor-outdoor dog run, as well as a detached guesthouse with its own kitchen and bath and a seven-car garage sporting a Tesla charging station. — Wendy Bowman, Robb Report, 13 Oct. 2026 LevelUp is an indoor sports complex and fitness center whose spaces are available for rental. — Paula Wethington, CBS News, 13 Oct. 2026 Beside it, a triple slider reveals an indoor-outdoor game room with sunken chili-pepper-red velvet seating, a realistic Ben & Aja Blanc Moon Light recessed into the ceiling, and Sutherland’s must-have dry-erase board. — Morgan Goldberg, Architectural Digest, 12 Oct. 2026 Among the amenities at the hotel today, according to its website, are conference facilities, indoor pool, sauna, solarium, fitness center, spa, massage room, hot tub, library and bicycle rental. — Kelly McGreal, FOXNews.com, 11 Oct. 2026 See All Example Sentences for indoor

Word History

First Known Use

1711, in the meaning defined at sense 1

Time Traveler
The first known use of indoor was in 1711

Phrases Containing indoor

Rhymes for indoor

See All Rhymes for indoor

Browse Nearby Words

Indonesian cinnamon
indoor
indoor baseball
See all Nearby Words

Cite this Entry

“Indoor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/indoor. Accessed 14 Oct. 2026.

Copy Citation

Kids Definition

indoor

adjective
in·​door ˌin-ˌdō(ə)r How to pronounce indoor (audio)
-ˌdȯ(ə)r
1
: of or relating to the interior of a building
2
: done, living, used, or belonging within a building
an indoor sport

More from Merriam-Webster on indoor

Thesaurus: All synonyms and antonyms for indoor

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Last Updated: - Updated example sentences

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of deportment

See Definitions and Examples »

Popular in Grammar & Usage

See More

'Affect' vs. 'Effect'

Merriam-Webster’s Great Big List of Words You Love to Hate

The Exceptions of '-s' and '-es' Plurals

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?
See More

Popular in Wordplay

See More

16 Food Words Recently Added to the Dictionary

The Real Origin of 'Supercalifragilistic'

9 Words That Sound Like Insults But Aren't

7 Words for Bad Endings and Rough Situations

The Words of the Week - Oct. 9
See More

Popular

See More

'Affect' vs. 'Effect'

16 Food Words Recently Added to the Dictionary

The Real Origin of 'Supercalifragilistic'
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
a cup of tea and a golf ball on tee side by side
Quiz: Sounds Like... Choose the word that sounds like it fits the clue...
See All