adjective

indoor

indoor, inside

They have a large indoor swimming pool.

They have a large indoor swimming pool.

Indoor activities are popular in winter.

Indoor activities are popular in winter.

((noun)) happening or used inside a building. They have a large indoor swimming pool.

Synonyms: inside, interior; Antonyms: outdoor, outside, exterior

A compound of 'in' and 'door'. Literally, what is situated inside the doors of a building.

Remember that 'indoor' is an adjective that describes a noun (an indoor cat), while 'indoors' is an adverb (let's play indoors).

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.