7
debatable(adjective, reasoning)
6
arguable
6
controversial(adjective, uncertain, doubtful, dubious, contentious)
6
disputable
6
questionable
5
doubtful(adjective, uncertainty)
5
moot
4
contestable(adjective, contentious, provocative, debated)
4
dubious(adjective, uncertainty)
3
flimsy(adjective, poor, implausible, unconvincing)
3
in question(expression, idiom, uncertainty)
3
problematic
3
problematical
3
unsustainable(adjective, error)
2
contentious
2
doubtable(adjective, contentious, provocative, debated)
2
open to question(expression, adjective, idiom, uncertain, doubtful)
1
ambiguous
1
apocryphal
1
at issue
11 years ago|4.5k views|share |citing 
APASmart Define. (2015). controvertible thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/controvertible/thesaurus/synonyms
ChicagoSmart Define. 2015. "controvertible thesaurus" https://smartdefine.org/controvertible/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, controvertible thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/controvertible/thesaurus/synonyms>.
MLASmart Define. "controvertible thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/controvertible/thesaurus/synonyms>