| unanswered(adjective, refuted) | |
| unconcluded | |
| unconfirmed(adjective, doubtful, unsettled, vague, hesitant) | |
| unestablished | |
| unfastened | |
| unfinished(adjective, definite, sure) | |
| unsolved | |
| untrustworthy(adjective, uncertain, nervous, doubtful, hesitant) | |
| up for grabs(expression, idiom, uncertain, doubtful, vague) | |
| variable(adjective, uncertain, doubtful, vague, hesitant) | |
| waffling(adjective, open, weak, uncertain, definite) | |
| watery(adjective, irresolute) | |
| abeyance | |
| adrift | |
| agnostic(uncertain, hesitant, dubious, unsure) | |
| aimless | |
| aloof(detached, unconcerned, impartial, unbiased, removed) | |
| ambitendent | |
| amorphous | |
| artless |
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| APA | Smart Define. (2015). undecided thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/undecided/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "undecided thesaurus" https://smartdefine.org/undecided/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, undecided thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/undecided/thesaurus/synonyms>. |
| MLA | Smart Define. "undecided thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/undecided/thesaurus/synonyms> |