32
disputable(noun, adjective, open, uncertain, doubtful)
20
arguable(noun, adjective, uncertain, doubtful, unsettled)
19
questionable(noun, adjective, uncertain, hot, doubtful)
17
moot(noun, adjective, uncertain, doubtful, unsettled)
17
contentious(adjective, doubtful, dubious, contrary, belligerent)
15
debatable(noun, adjective, uncertain, doubtful, unsettled)
15
uncertain(noun, adjective, uncertain, doubtful, unsettled)
13
doubtful(noun, adjective, uncertain, hot, unsettled)
12
polemical(adjective, reasoning, contrary, argumentative, contentious)
11
undecided(noun, adjective, uncertain, doubtful, unsettled)
11
argumentative(adjective, quarrel, reasoning, contrary, belligerent)
11
open(adjective, doubtful, unsettled, undecided, debatable)
10
contestable(adjective, uncertain, doubtful, dubious, contentious)
10
dubious(noun, adjective, uncertain, hot, doubtful)
9
unsettled(noun, adjective, energetic, lively, uncertain)
9
disputatious(adjective, discord, reasoning, contrary, belligerent)
9
polemic(noun, adjective, discord, contrary, argumentative)
8
litigious(adjective, discord, contrary, belligerent, contentious)
7
controvertible(adjective, uncertain, doubtful, dubious, contentious)
6
problematic(adjective, tough, uncertain, doubtful, unsettled)
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APASmart Define. (2015). Controversial thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/controversial/thesaurus/synonyms
ChicagoSmart Define. 2015. "Controversial thesaurus" https://smartdefine.org/controversial/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, Controversial thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/controversial/thesaurus/synonyms>.
MLASmart Define. "Controversial thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/controversial/thesaurus/synonyms>