56 entries under dangerous topic. ×
| perilous(adjective, risky, injurious, unsafe) | |
| pestilent(adjective, unhealthy, fatal, unwholesome) | |
| severe(adjective, bad, offensive, awful, terrible) | |
| threatening(adjective, risky, menacing, unsafe) | |
| terrible | |
| alarming(adjective, arouse bad emotions) | |
| mortal(adjective, bad, evil, injurious) | |
| precarious(adjective, risky, unsafe) | |
| serious(adjective, bad, offensive, foul, revolting) | |
| difficult(unpleasant, risky, unsafe) | |
| life-threatening | |
| touchy(risky, unsafe) | |
| critical | |
| death-defying | |
| deathly | |
| explosive | |
| formidable | |
| grave | |
| impending | |
| pressing |
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Harmful on
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| APA | Smart Define. (2016). harmful thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/harmful/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "harmful thesaurus" https://smartdefine.org/harmful/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, harmful thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/harmful/thesaurus/synonyms>. |
| MLA | Smart Define. "harmful thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/harmful/thesaurus/synonyms> |