1
troubled(uncertain, nervous, worried, hesitant, insecure)
1
unclear(nervous, doubtful, shaky, vague, insecure)
1
unconfident(uncertain, nervous, worried, hesitant, insecure)
1
unconfirmed(doubtful, shaky, vague, unsure, risky)
1
undecided(nervous, doubtful, vague, insecure, unsure)
1
uneasy(shaky, unlikely, unpromising)
1
unhealthy(adjective, delicate, uncertain, sensitive, unstable)
1
unreliable(adjective, delicate, uncertain, nervous, unstable)
1
unsafe(adjective, delicate, uncertain, sensitive, unstable)
1
unsettled(adjective, open, delicate, uncertain, unstable)
1
unsound(adjective, delicate, uncertain, sensitive, unstable)
1
unstable(adjective, delicate, uncertain, nervous, doubtful)
1
unsteady(adjective, delicate, uncertain, unstable, doubtful)
1
unsure(adjective, delicate, uncertain, nervous, unstable)
1
up for grabs(expression, idiom, nervous, doubtful, shaky)
1
up in the air(expression, idiom, uncertain, doubtful, worried)
1
uptight(uncertain, nervous, worried, hesitant, insecure)
1
vague(uncertain, nervous, doubtful, worried, hesitant)
1
venturesome(delicate, uncertain, unsound, dangerous, hazardous)
1
wicked(adjective, delicate, uncertain, sensitive, unsound)
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APASmart Define. (2015). on thin ice thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/on_thin_ice/thesaurus/synonyms
ChicagoSmart Define. 2015. "on thin ice thesaurus" https://smartdefine.org/on_thin_ice/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, on thin ice thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/on_thin_ice/thesaurus/synonyms>.
MLASmart Define. "on thin ice thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/on_thin_ice/thesaurus/synonyms>