70 entries under foul topic. ×
| harmful(adjective, bad, severe, offensive, awful) | |
| serious(adjective, help, bad, great, severe) | |
| poisonous(adjective, bad, offensive, violent, wild) | |
| severe(adjective, help, bad, hard, tough) | |
| bad(adjective, evil, offensive, violent, heavy) | |
| nasty(adjective, bad, hard, rough, offensive) | |
| ugly(adjective, bad, hard, tough, severe) | |
| pernicious(adjective, bad, offensive, disgusting) | |
| deadly(adjective, bad, heavy, harmful) | |
| injurious(adjective, bad, severe, offensive, awful) | |
| deleterious(adjective, bad, offensive, harmful) | |
| noxious(adjective, bad, evil, offensive, cruel) | |
| damaging(adjective, bad, tough, evil, offensive) | |
| baneful(adjective, offensive, disgusting, harmful) | |
| hurtful(adjective, bad, offensive, cruel) | |
| mischievous(adjective, offensive, cruel, disgusting) | |
| unwholesome(adjective, offensive, disgusting, rotten) | |
| murderous(adjective, bad, strong, severe, difficult) | |
| noisome(adjective, bad, evil, offensive, unpleasant) | |
| polluted(adjective, bad, offensive, revolting) |
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| APA | Smart Define. (2016). dangerous thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/dangerous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "dangerous thesaurus" https://smartdefine.org/dangerous/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, dangerous thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/dangerous/thesaurus/synonyms>. |
| MLA | Smart Define. "dangerous thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/dangerous/thesaurus/synonyms> |