6
indoors(noun, adverb, topside)
3
inside(adverb, preposition)
1
hearth
1
within
0
inwardly
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APASmart Define. (2015). outdoors thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/outdoors/thesaurus/antonyms
ChicagoSmart Define. 2015. "outdoors thesaurus" https://smartdefine.org/outdoors/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2015, outdoors thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/outdoors/thesaurus/antonyms>.
MLASmart Define. "outdoors thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/outdoors/thesaurus/antonyms>