1
tainted
1
unfavorable
1
unhealthful
1
unsound
1
violent
1
virulent(adjective, poisonous, lethal)
0
adulterated
0
amoral
0
artful
0
bad-natured
0
bad condition
0
barbarian
0
bedraggled
0
blended
0
cataclysmal
0
contaminated
0
corrupt
0
costly
0
counter
0
cropped
10 years ago|3.3k views|share |citing 
APASmart Define. (2016). harmless thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/harmless/thesaurus/antonyms
ChicagoSmart Define. 2016. "harmless thesaurus" https://smartdefine.org/harmless/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2016, harmless thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/harmless/thesaurus/antonyms>.
MLASmart Define. "harmless thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/harmless/thesaurus/antonyms>