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

For families While the Serbelloni is a family-friendly hotel—the indoor kids pool, watersports, and babysitting help—its ambience definitely lends itself better to older guests. — Condé Nast, Condé Nast Traveler, 7 Oct. 2026

Built in 2005 for the ATP World Tour Finals, the 15,000-seat tennis venue features a fragmented steel roof that opens and closes to suit indoor or outdoor play. — Kieron Marchese, Architectural Digest, 6 Oct. 2026

Apple is collaborating with LG on a new lineup of smart home devices, including a video doorbell, thermostat, indoor camera, and more, according to a report from Bloomberg. — Emma Roth, The Verge, 6 Oct. 2026

This SimpliSafe 11-piece home security system includes an indoor camera and a doorbell. — George Yang, PC Magazine, 6 Oct. 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