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30 entries under noun topic. ×

23
cleanliness
15
sanctuary(blasphemy, desecration, defilement, sacrilege)
14
purification(sterility, dirtying)
12
decontamination
9
cleanness
5
hygiene
5
purity
3
removal
2
neatness
2
sanitization
2
clarity
1
refinement
1
purgation
1
sanitation
0
clarification
0
cleanup
0
clearness
0
sterility
0
tidiness
0
trait
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APASmart Define. (2015). pollution thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/pollution/thesaurus/antonyms
ChicagoSmart Define. 2015. "pollution thesaurus" https://smartdefine.org/pollution/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2015, pollution thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/pollution/thesaurus/antonyms>.
MLASmart Define. "pollution thesaurus" 4 May 2015. Web. 27 September 2026. <https://smartdefine.org/pollution/thesaurus/antonyms>