13
clean(verb, purify)
11
purify(verb, clean)
6
cleanse(verb, clean, purify)
4
filter
3
improve(verb, clean, purify)
2
decontaminate
2
disinfect
2
heal(verb, clean, purify)
2
sterilize(verb, clean, purify)
2
wash
1
clarify
1
clear(verb, clean, purify)
1
cure(verb, clean, purify)
1
distill
1
sanctify(verb, clean, purify)
1
exorcise
1
recover
1
sponge
1
sweep
1
sweeten
11 years ago|1.4k views|share |citing 
APASmart Define. (2015). contaminate thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/contaminate/thesaurus/antonyms
ChicagoSmart Define. 2015. "contaminate thesaurus" https://smartdefine.org/contaminate/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2015, contaminate thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/contaminate/thesaurus/antonyms>.
MLASmart Define. "contaminate thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/contaminate/thesaurus/antonyms>