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adj B1 Intermediate Common

outdoor

owt-DAW

Outdoor (adj) means Existing, happening, or used in the open air rather than inside a building. Example: “They set up an outdoor stage for the summer concert series.”

adj
1
Existing, happening, or used in the open air rather than inside a building.
"They set up an outdoor stage for the summer concert series."
"She prefers outdoor activities like hiking and cycling."

How to Use Outdoor

Learner’s notes

In plain EnglishHappening outside, not indoors.

Common mistake

"Outdoor" is the adjective ("an outdoor pool"); "outdoors" is the adverb or noun ("we ate outdoors").

Easily confused with
Common pairings
outdoor activities outdoor furniture outdoor pool

Word Forms

outdoored past tense, outdoors singular

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Test yourself on “outdoor” A quick quiz — meaning, synonyms & usage

Fill the Gap

Can you complete this real example?

They set up an _____ stage for the summer concert series.

Etymology

Built from "out-" plus "door."

open-air outside alfresco exterior external

Related Words

Rhymes for outdoor

See all rhymes for outdoor →

Frequently Asked Questions

What does “outdoor” mean?

The word “outdoor” means existing, happening, or used in the open air rather than inside a building. In plain terms, happening outside, not indoors.

How do you pronounce “outdoor”?

“Outdoor” is pronounced owt-DAW (/aʊtˈdɔː/ in IPA).

How do you use “outdoor” in a sentence?

Here is “outdoor” used in a sentence: “They set up an outdoor stage for the summer concert series.”

What part of speech is “outdoor”?

“Outdoor” is an adjective.

Is “outdoor” a common word?

“Outdoor” is a fairly common word in modern English, usually learned at around the B1 level.

What is the difference between "outdoor" and "outdoors"?

"Outdoor" is an adjective placed before a noun, as in "outdoor furniture" or "outdoor sports." "Outdoors" is an adverb or noun, as in "we ate outdoors" or "the great outdoors."

What is the opposite of "outdoor"?

The opposite of "outdoor" is "indoor," which describes things existing, happening, or used inside a building. Outdoor refers to the open air rather than an enclosed space.

Can "outdoor" be used after a verb like "go outdoor"?

No. "Outdoor" only works as an adjective before a noun, so "go outdoors" is correct while "go outdoor" is not. Use the adverb form "outdoors" when describing where an action takes place.

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