165 entries under doubtful topic. ×

1
suspected(adjective, suspicious, supposed, unproven)
1
ticklish(adjective, weak, delicate, uncertain, sensitive)
1
touch and go(expression, adjective, idiom, delicate, uncertain)
1
touchy(adjective, open, obscure, delicate, uncertain)
1
unfixed(adjective, uncertain, vague, hesitant)
1
unheard of(expression, unlikely, implausible)
1
up for discussion(expression, adjective, idiom, uncertain)
1
up for grabs(expression, adjective, idiom, uncertain, nervous)
1
up in the air(expression, adjective, idiom, open, uncertain)
1
variable(adjective, weak, loose, uncertain, unstable)
0
contentious(questionable, provocative, debatable, debated)
0
contrary
0
faint(unclear, indistinct, indistinguishable, improbable)
0
impracticable(unlikely, implausible)
0
not probable(expression, improbable)
0
out of the ordinary(expression, idiom, unusual, strange)
0
out on a limb(expression, uncertain, unstable, shaky)
0
out on limb(expression, idiom, delicate, uncertain)
0
pseudo(adjective, unpredictable, fickle, suspicious)
0
rootless(adjective, uncertain, nervous, suspicious)
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APASmart Define. (2016). dubious thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/dubious/thesaurus/synonyms
ChicagoSmart Define. 2016. "dubious thesaurus" https://smartdefine.org/dubious/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, dubious thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/dubious/thesaurus/synonyms>.
MLASmart Define. "dubious thesaurus" 4 March 2016. Web. 26 September 2026. <https://smartdefine.org/dubious/thesaurus/synonyms>