Synonyms|147Antonyms|25|Broader|1Narrower|1Related|89
8
unsustainable
7
artificial
4
man-made
3
unreal
3
unsubstantial
2
bogus
2
fake
2
fraudulent
2
imaginary
2
imitation
2
imitative
2
insubstantial
2
mystical
2
phony
1
feigned
1
direct
1
false
1
improper
1
insincere
1
mannered
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APASmart Define. (2015). environmental thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/environmental/thesaurus/antonyms
ChicagoSmart Define. 2015. "environmental thesaurus" https://smartdefine.org/environmental/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2015, environmental thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/environmental/thesaurus/antonyms>.
MLASmart Define. "environmental thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/environmental/thesaurus/antonyms>