outdoor

adjective

out·​door ˈau̇t-ˌdȯr 

ˈau̇t-ˈdȯr

variants or less commonly outdoors

ˈau̇t-ˌdȯrz, 

ˈau̇t-ˈdȯrz 

1

: of or relating to the outdoors

2

a

: performed outdoors

outdoor sports

b

: outdoorsy

an outdoor couple

3

: not enclosed : having no roof

an outdoor restaurant

Synonyms of outdoor

• open-air
• outside
• outer
• exterior
• out-of-door
• external
• outdoorsy

Examples of outdoor in a Sentence

an outdoor picnic is always at the mercy of the weather, of course

Recent Examples on the Web

Portavadie, Argyll Situated on the banks of Loch Fyne on Scotland’s west coast, Portavadie is home to what is thought to be the biggest heated outdoor infinity pool in the country, said Rachel Dixon in The Guardian. — Will Barker, TheWeek, 5 Nov. 2026

What these travelers share is an interest in both unwinding and outdoor adventure with an element of cultural immersion. — Condé Nast, Condé Nast Traveler, 5 Nov. 2026

Suitable for both children and adults, manufacturers recommend the peel-and-stick patches — which cost, on average, $10 to $20 on Amazon for a box — be placed on clothing or wearable outdoor accessories, as opposed to directly onto skin. — Deborah Vankin, Los Angeles Times, 4 Nov. 2026

Photos and videos of the king’s frustration circulated after he and Camilla got caught in the rainstorm on Sunday while at an outdoor event in Antigua and Barbuda celebrating the nation’s 45th anniversary of independence. — Rachel Burchfield, InStyle, 4 Nov. 2026

Word History

Etymology

out (of) door, out (of) doors

First Known Use

1748, in the meaning defined at sense 1

Rhymes for outdoor

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

Kids Definition

outdoor

adjective

out·​door ˌau̇t-ˌdō(ə)r 

-ˌdȯ(ə)r

variants also outdoors

-ˌdō(ə)rz 

-ˌdȯ(ə)rz

1

: of or relating to the outdoors

an outdoor setting

2

: done outdoors

outdoor games

3

: having no roof and walls

an outdoor theater