Synonyms|464Antonyms|104|Broader|6Narrower|16Related|848

81 entries under doubtful topic. ×

3
iffy(adjective, clear, open, delicate, informal)
2
betwixt and between(expression, adjective, idiom, open, uncertain)
2
disputable(adjective, uncertain, dubious, suspect)
2
in doubt(expression, adjective, idiom, clear, open)
2
in question(adjective, idiom, clear, certain, uncertain)
2
inconclusive(adjective, clear, certain, uncertain)
2
insecure(adjective, delicate, uncertain, nervous, unstable)
2
weak(uncertain, nervous, uneven, insecure)
1
contingent(adjective, delicate, uncertain, unstable)
1
dangerous(adjective, delicate, uncertain, unstable)
1
dicey(adjective, delicate, uncertain, unstable)
1
distrustful(adjective, uncertain, nervous, shaky)
1
doubtable(uncertain, shaky, dubious, unclear)
1
dynamite(adjective, delicate, uncertain, unstable)
1
fluctuant(adjective, uncertain, nervous, shaky)
1
fly-by-night(adjective, uncertain, nervous, shaky)
1
hairy(adjective, delicate, uncertain, unstable)
1
hanging by a thread(expression, adjective, idiom, delicate, uncertain)
1
hazardous(adjective, delicate, uncertain, unstable)
1
hesitant(open, uncertain, nervous, vague)
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APASmart Define. (2015). borderline thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/borderline/thesaurus/synonyms
ChicagoSmart Define. 2015. "borderline thesaurus" https://smartdefine.org/borderline/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, borderline thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/borderline/thesaurus/synonyms>.
MLASmart Define. "borderline thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/borderline/thesaurus/synonyms>