- Definitions|2
- Thesaurus|730
- Abbreviations|0
9 entries under doubt topic. ×
| precarious(adjective, change, quality, dark) | |
| uncertain(adjective, change, quality, dark) | |
| ambiguous(adjective, quality, dark, suspicious) | |
| disputable(adjective, dark, suspicious, loathsome) | |
| dicey(adjective, quality, unstable, doubtful) | |
| dubious(adjective, dark, unstable, doubtful) | |
| iffy(adjective, dark, suspicious, doubted) | |
| indefinite(adjective, quality, nonstable) | |
| unconfirmed(adjective, not defended, not upheld) |
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| APA | Smart Define. (2016). sustainable thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/sustainable/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "sustainable thesaurus" https://smartdefine.org/sustainable/thesaurus/antonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, sustainable thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/sustainable/thesaurus/antonyms>. |
| MLA | Smart Define. "sustainable thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/sustainable/thesaurus/antonyms> |