50 entries under feature topic. ×

2
environmentally safe(expression, environment, ecology)
2
environmentally sensitive(expression, environment, ecology)
2
environmentally sound(expression, environment, ecology)
2
envirosafe(adjective, nature, environment, condition)
2
inherent(adjective, nature, characteristic, environment)
2
nature-friendly(adjective, nature, environment, condition)
2
non-polluting(adjective, nature, environment, condition)
2
nonpolluting(adjective, nature, environment, condition)
2
pollutant-free(adjective, nature, environment, condition)
2
pollution-free(adjective, nature, environment, condition)
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APASmart Define. (2015). natural environment thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/natural_environment/thesaurus/related
ChicagoSmart Define. 2015. "natural environment thesaurus" https://smartdefine.org/natural_environment/thesaurus/related (accessed September 30, 2026).
HarvardSmart Define 2015, natural environment thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/natural_environment/thesaurus/related>.
MLASmart Define. "natural environment thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/natural_environment/thesaurus/related>