| furthest(adjective, separate, out, outside, external) | |
| light | |
| open air(noun, expression, idiom, outdoors) | |
| out(adjective, separate, outside, external, foreign) | |
| out-of-doors(noun, adjective, adverb, outside, outdoors) | |
| out of doors(noun, expression, adjective, idiom, outdoors) | |
| outer(adjective, separate, out, outside, external) | |
| outermost(adjective, separate, out, outside, external) | |
| outward(adjective, separate, out, outside, external) | |
| over(adjective, separate, out, outside, external) | |
| plein-air | |
| pneumatic | |
| roomy | |
| surface(adjective, separate, out, outside, external) | |
| al fresco | |
| beyond | |
| bucolic surroundings(noun, expression, outdoors) | |
| clear | |
| foreign(adjective, separate, out, outside, external) | |
| freestanding(separate, external, outdoor) |
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| APA | Smart Define. (2015). open-air thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/open-air/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "open-air thesaurus" https://smartdefine.org/open-air/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, open-air thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/open-air/thesaurus/synonyms>. |
| MLA | Smart Define. "open-air thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/open-air/thesaurus/synonyms> |