| fair-minded(adjective, indifferent, detached, aloof, unconcerned) | |
| far-fetched(uncertain, doubtful, unsure) | |
| fearful(adjective, weak, uncertain, doubtful, unsure) | |
| fence-sitting | |
| fence-straddling | |
| fidgety | |
| fishy(uncertain, doubtful, vague, unsure, ambiguous) | |
| fitful(adjective, doubtful, vague, hesitant, changeable) | |
| flighty | |
| flitting(adjective, irresolute) | |
| flustered(uncertain, hesitant, dubious, unsure) | |
| forthcoming(adjective, incomplete, imminent, pendent) | |
| free | |
| general | |
| halting(adjective, weak, uncertain, doubtful, hesitant) | |
| hang | |
| hanging by a thread(expression, doubtful, vague, hesitant, changeable) | |
| hazy(doubtful, vague, hesitant, changeable, ambiguous) | |
| hemming and hawing(adjective, definite, sure) | |
| hesitation |
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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> |