100 entries under harmful topic. ×
| insanitary(adjective, injurious, detrimental) | |
| malefic(adjective, negative, injurious, damaging) | |
| dire(adjective, injurious, damaging, deadly) | |
| hateful(adjective, mean, bad, wrong, evil) | |
| sickly(adjective, offensive, foul, disgusting) | |
| catastrophic(adjective, injurious, damaging, deadly) | |
| inimical(adjective, negative, antagonistic, contrary) | |
| mortal(adjective, bad, evil, dangerous) | |
| cancerous(adjective, injurious, damaging, deadly) | |
| crippling(adjective, injurious, damaging, destructive) | |
| degrading(injurious, detrimental) | |
| disastrous(adjective, injurious, damaging, deadly) | |
| distressing(cruel, unkind, upsetting, damaging) | |
| hazardous(adjective, dangerous, injurious, detrimental) | |
| iniquitous(evil, shameful, distressing, depraved) | |
| insalutary(adjective, offensive, foul, disgusting) | |
| malevolent(adjective, mean, bad, wrong, evil) | |
| perilous(adjective, dangerous, injurious, detrimental) | |
| risky(adjective, dangerous, injurious, damaging) | |
| treacherous(adjective, dangerous, injurious, detrimental) |
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| APA | Smart Define. (2015). noxious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/noxious/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "noxious thesaurus" https://smartdefine.org/noxious/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, noxious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/noxious/thesaurus/synonyms>. |
| MLA | Smart Define. "noxious thesaurus" 17 July 2015. Web. 24 September 2026. <https://smartdefine.org/noxious/thesaurus/synonyms> |