outdoor
adj. US //ˈaʊtˌdɔɹ// UK //aʊtdˈɔː// out·door
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1 outside in the open air (adj.) B1 Intermediatehappening or used outside, not inside a building.
situated in, designed for, or carried on in the open air rather than within an enclosed structure.
ExampleWe decided to have an outdoor party because the weather was so warm.
ExampleThe city council invested in several outdoor gyms to encourage residents to exercise in the fresh air during the summer months.
UsageThis is an attributive adjective, meaning it almost always appears before the noun it describes.
PitfallI like to play outdoor.I like to play outdoors.Use 'outdoor' as an adjective before a noun (outdoor sports). Use 'outdoors' as an adverb to describe where an action happens.
From out- + door.