1
unconfirmable
1
undecided(adjective, weak, uncertain, doubtful, unsettled)
1
undetermined(adjective, weak, uncertain, doubtful, hesitant)
1
undivinable
1
uneager(adjective, uncertain, shy, doubtful, hesitant)
1
unforeseeable
1
unprovable
1
unresolved(uncertain, hesitant, dubious, unsure)
1
unsettled(adjective, weak, uncertain, doubtful, hesitant)
1
unstable(adjective, weak, false, uncertain, dishonest)
1
unsteady(adjective, weak, uncertain, doubtful, shaky)
1
unverifiable
1
unwasteful(considerate, cautious, prudent, suspicious, watchful)
1
unwilling(adjective, uncertain, shy, doubtful, hesitant)
1
variable
1
waffling(adjective, weak, uncertain, doubtful, hesitant)
1
walking on eggs(expression, considerate, cautious, prudent, suspicious)
1
watching out(expression, considerate, cautious, prudent, suspicious)
1
weak(adjective, uncertain, doubtful, shaky, unsure)
1
weak-kneed(weak, indecisive, vacillating)
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APASmart Define. (2016). doubting thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/doubting/thesaurus/synonyms
ChicagoSmart Define. 2016. "doubting thesaurus" https://smartdefine.org/doubting/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, doubting thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/doubting/thesaurus/synonyms>.
MLASmart Define. "doubting thesaurus" 23 March 2016. Web. 26 September 2026. <https://smartdefine.org/doubting/thesaurus/synonyms>