19
outside(adjective, adverb, separate, external, yard)
10
exterior(adjective, separate, out, outside, external)
10
outer(adjective, separate, out, outside, external)
8
alfresco(adjective, adverb, separate, free, out)
7
out-of-door
6
external(adjective, separate, out, outside, foreign)
6
open-air(adjective, separate, out, outside, external)
6
outward(adjective, separate, out, outside, external)
5
out of doors(expression, adjective, idiom, adverb, buckshee)
5
outmost(outside, external)
4
out-of-doors(adjective, adverb, free, outside, rustic)
3
extrinsic(adjective, outside, external)
3
foreign(adjective, separate, out, outside, external)
3
free(adjective, adverb, outside, rustic, buckshee)
3
out(separate, outside, external, foreign, yard)
3
outdoors
2
abroad
2
extramural(separate, out, outside, external, foreign)
2
in the open(expression, adjective, idiom, adverb, free)
2
mountain(adjective, adverb)
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APASmart Define. (2015). outdoor thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/outdoor/thesaurus/synonyms
ChicagoSmart Define. 2015. "outdoor thesaurus" https://smartdefine.org/outdoor/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, outdoor thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/outdoor/thesaurus/synonyms>.
MLASmart Define. "outdoor thesaurus" 6 October 2015. Web. 20 September 2026. <https://smartdefine.org/outdoor/thesaurus/synonyms>