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

The spa An indoor pool is open from morning to night with a lifeguard, sauna, and a few lounge chairs beneath enormous grass sculptures suspended from the ceiling. —Condé Nast, Condé Nast Traveler, 17 June 2026

Besler, who once aspired to little more than high school basketball tournaments and indoor soccer in Kansas City, became the first Kansas City kid to reach the World Cup. —The Kansas City Star, Kansas City Star, 17 June 2026

The building includes community lounges with WiFi, a fitness center and an indoor play space. —Don Stacom, Hartford Courant, 16 June 2026

Even on indoor days, heat, sun and screen time can dry out eyes. —Gabby Sartori, USA Today, 16 June 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