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

But knowing the difference between a pot and a planter can help plan your garden and care for both indoor and outdoor plants. —Alexandra Jones, The Spruce, 22 Jan. 2026

Continue this indoor-outdoor transition, extending their outdoor time a couple hours each day for a4 to 5 days before planting the seedlings in the garden. —Megan Hughes, Better Homes & Gardens, 21 Jan. 2026

Set in Delray’s beachfront town square, the restaurant unfolds across several sleek indoor and outdoor spaces filled with bold art and lush greenery. —Lauren Dana Ellman, Travel + Leisure, 21 Jan. 2026

With the harsh cold in place, power outages can lead to lack of indoor heating, crippling communities. —Nikki Nolan, CBS News, 21 Jan. 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