- Definitions|2
- Thesaurus|4.6k
- Abbreviations|0
88 entries under adjective topic. ×
| unsure(clear, doubtful, insecure) | |
| uncertain(clear, doubtful, sure, changeable) | |
| doubtful(unclear, questionable, believing) | |
| undecided(definite, sure) | |
| dubious(doubtful, vague, unclear) | |
| shaky(strong, sound, doubtful) | |
| unreliable(clear, strong, counterfeit, uncertain) | |
| ambiguous(clear, plain) | |
| chancy(safe, risky, dangerous) | |
| dark | |
| indefinite(counterfeit, uncertain, vague, ambiguous) | |
| problematic(clear, open) | |
| changeable(calm, constant) | |
| contingent(essential, possible, conditional) | |
| erratic(calm, unpredictable, consistent, wandering) | |
| fictitious(honest, untrue, factual) | |
| hazardous(strong, safe, unpredictable, dangerous) | |
| indeterminate(uncertain, definite, vague) | |
| insecure(strong, uncertain, steady, worried) | |
| precarious(strong, stable, doubtful, tricky) |
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| APA | Smart Define. (2016). certain thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/certain/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "certain thesaurus" https://smartdefine.org/certain/thesaurus/antonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, certain thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/certain/thesaurus/antonyms>. |
| MLA | Smart Define. "certain thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/certain/thesaurus/antonyms> |