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 championship is part of the area's World Snow Celebration, a series of events that include a collectible pin crawl featuring local shops, live music, an indoor market, and a 5K run. —Ginger Crichton, Midwest Living, 28 Apr. 2026

However, O'Connor says your curtains and drapes still collect dust, pet dander, cooking odors, and other airborne particles that can affect indoor air quality. —Ashlyn Needham, Southern Living, 28 Apr. 2026

The restaurant’s indoor volume is ideal — not too loud, not too quiet — with live music on occasion. —Anna Katherine Clemmons, USA Today, 28 Apr. 2026

The $5 billion expansion project includes adding an additional hotel wing, a 7,000-seat entertainment venue, an indoor dayclub with pools, a spa and much more. —Alexa Herrera, CBS News, 28 Apr. 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