278 entries under uncertain topic. ×
| on thin ice(expression, adjective, idiom, open, delicate) | |
| opaque(vague, unclear) | |
| oracular(dark, dubious, mysterious) | |
| putative(vague, imaginary, theoretical, supposed) | |
| recondite(dark, fantastic, mysterious, unbelievable) | |
| reluctant(slow, shy, hesitant, meek) | |
| rugged(adjective, delicate, unstable, unsettled) | |
| running scared(expression, adjective, anxious, nervous) | |
| scaredy-cat(adjective, anxious, nervous, worried) | |
| slow(adjective, awkward, shy, hesitant) | |
| stiff(adjective, anxious, nervous, worried) | |
| supposed(vague, imaginary, theoretical, assumed) | |
| suppositious(vague, imaginary, theoretical, supposed) | |
| suspected(adjective, dubious, suspicious) | |
| tenebrous(vague, unclear, ambiguous, misleading) | |
| touch and go(expression, adjective, idiom, delicate) | |
| unintelligible(dark, vague, unclear, ambiguous) | |
| unknown(adjective, rough, unsettled, vague) | |
| unpoised(nervous, meek, insecure, timid) | |
| untrusty(nervous, insecure, unsure, unconvinced) |
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| APA | Smart Define. (2016). doubtful thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/doubtful/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "doubtful thesaurus" https://smartdefine.org/doubtful/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, doubtful thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/doubtful/thesaurus/synonyms>. |
| MLA | Smart Define. "doubtful thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/doubtful/thesaurus/synonyms> |