51 entries under doubtful topic. ×

26
questionable(noun, adjective, open, certain, uncertainty)
24
debatable(noun, adjective, certain, uncertainty, uncertain)
22
moot(noun, adjective, open, certain, uncertain)
21
uncertain(noun, adjective, open, certain, uncertain)
19
arguable(noun, adjective, open, certain, uncertain)
18
controversial(noun, adjective, open, uncertain)
16
dubious(noun, adjective, open, uncertain)
16
problematic(adjective, open, certain, uncertain)
15
undecided(noun, adjective, uncertain, dubious)
12
unsettled(noun, adjective, uncertain, dubious)
9
contestable(adjective, uncertain, vague, dubious)
8
problematical(adjective, certain, uncertain, dubious)
7
suspect(adjective, uncertain, vague, dubious)
7
suspicious(adjective, uncertain, dubious, suspect)
6
open(adjective, uncertain, dubious, suspect)
5
dubitable(adjective, uncertain, dubious, tricky)
5
open to question(expression, adjective, idiom, uncertain)
5
unsure(adjective, uncertain, dubious, suspect)
4
contentious(adjective, dubious, questionable, provocative)
4
iffy(adjective, uncertain, dubious, tricky)
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APASmart Define. (2015). disputable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/disputable/thesaurus/synonyms
ChicagoSmart Define. 2015. "disputable thesaurus" https://smartdefine.org/disputable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, disputable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/disputable/thesaurus/synonyms>.
MLASmart Define. "disputable thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/disputable/thesaurus/synonyms>