indoor

adjective

in·​door ˈin-ˈdȯr 

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

Features of the home and the other priciest metro Phoenix houses to sell in include views of Camelback Mountain, two kitchens, a guesthouse with a separate garage, indoor stone fireplaces, a private well and barn. — Arizona Republic, AZCentral.com, 21 Sep. 2026

Much the same can be said for indoor spaces like the attic, basements and dryer vents out back. — Isa Almeida, Oklahoman, 21 Sep. 2026

In addition to more than 10,000 square feet of outdoor and indoor event space, the hotel also has a Billet Room, also known as the game room, and a library, known as the Mulberry room. — Ella Gonzales, Fort Worth Star-Telegram, 21 Sep. 2026

First frosts are generally time to dig out plants, replace them with cover crops and keep an eye on tender indoor plants. — Caden Perry, jsonline.com, 21 Sep. 2026

Word History

First Known Use

1711, in the meaning defined at sense 1

Phrases Containing indoor

• indoor plumbing

Rhymes for indoor

• abhor
• abor
• adore
• afore
• ardour
• ashore
• backdoor
• before
• bookstore
• candour
• centaur
• claymore

Kids Definition

indoor

adjective

in·​door ˌin-ˌdō(ə)r 

-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