246 entries under doubtful topic. ×
| inconceivable(unlikely, implausible, unbelief doubt) | |
| incredible(adjective, dubious, suspicious, unlikely) | |
| jumpy(adjective, anxious, nervous, worried) | |
| misleading(adjective, faint, vague, dubious) | |
| on thin ice(expression, adjective, idiom, delicate, nervous) | |
| oracular(dark, dubious, mysterious) | |
| unbelievable(adjective, dubious, rare, suspicious) | |
| unwilling(adjective, shy, cautious, diffident) | |
| up in the air(expression, adjective, idiom, open, certain) | |
| amphibological(adjective, obscure, rough, difficult, dark) | |
| concerned(adjective, anxious, nervous, ill, sick) | |
| different(adjective, dubious, suspect, shady) | |
| disputed(adjective, dubious, contentious, provocative) | |
| disquieted(adjective, anxious, nervous, worried) | |
| fanciful(adjective, unusual, unlikely, implausible) | |
| improbable(adjective, unsure, likely, unlikely) | |
| lubricious(adjective, weak, sensitive, irregular) | |
| mootable(adjective, certain, dubious, unsure) | |
| questioning(nervous, worried, hesitant, dubious) | |
| unconfirmed(adjective, vague, dubious, changeable) |
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| APA | Smart Define. (2016). uncertain thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/uncertain/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "uncertain thesaurus" https://smartdefine.org/uncertain/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, uncertain thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/uncertain/thesaurus/synonyms>. |
| MLA | Smart Define. "uncertain thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/uncertain/thesaurus/synonyms> |