3
benignant
3
curative(adjective, healing)
3
healthful
3
convenient
3
healing
3
hurtless
3
innocent
3
inoffensive(adjective, harmless)
3
invigorating
3
medical
3
nonlethal
3
nontoxic
3
palliative
3
salutary
3
serviceable
3
sound
3
wholesome
2
active
2
constructive
2
corrective(adjective, healing, curing)
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APASmart Define. (2016). harmful thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/harmful/thesaurus/antonyms
ChicagoSmart Define. 2016. "harmful thesaurus" https://smartdefine.org/harmful/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, harmful thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/harmful/thesaurus/antonyms>.
MLASmart Define. "harmful thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/harmful/thesaurus/antonyms>