Words / A1

in-DORZ/ˌɪnˈdɔːz/

Indoors means inside a building, not outside. It is an adverb: stay indoors, play indoors, go indoors. Indoor is the adjective: an indoor pool. Outside and outdoors are the opposites. Do not use indoor as the adverb.

Meaning

Inside a building, not outside.

Examples

• “It is raining — please play indoors.”
• “Keep the cat indoors tonight.”
• “We had lunch indoors because of the rain.”

Good to know

adverb: indoors. Adjective: indoor. Opposite: outdoors / outside. Not: *indoor as adverb.

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