- Definitions|2
- Thesaurus|1.1k
- Abbreviations|0
162 entries under adjective topic. ×
| unfavorable | |
| unfriendly | |
| unpredictable(unstable, volatile, risky, dangerous) | |
| unpropitious | |
| unsettled(upset, delicate, uncertain, anxious) | |
| urgent(bad, heavy, significant, serious) | |
| venturous | |
| ambiguous(delicate, uncertain, unstable, doubtful) | |
| antipathetic | |
| borderline(delicate, uncertain, unstable, doubtful) | |
| burdensome | |
| calamitous | |
| charged(unstable, unpredictable, volatile) | |
| consequential(heavy, wild, significant, unstable) | |
| contingent(delicate, uncertain, unstable, doubtful) | |
| crucial(heavy, significant, serious, vital) | |
| deadly | |
| death-defying | |
| deathly | |
| disastrous |
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| APA | Smart Define. (2015). perilous thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/perilous/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "perilous thesaurus" https://smartdefine.org/perilous/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, perilous thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/perilous/thesaurus/synonyms>. |
| MLA | Smart Define. "perilous thesaurus" 17 July 2015. Web. 26 September 2026. <https://smartdefine.org/perilous/thesaurus/synonyms> |