debatable (adj.)
- arguable
- confutable
- conjectural
- contestable
- controversial
- controvertible
- deniable
- disputable
- doubtable
- doubtful
- dubious
- dubitable
- iffy
- mistakable
- moot
- polemic
- polemical
- problematic
- problematical
- questionable
- refutable
- speculative
- suppositional
- suspect
- suspicious
- uncertain
- undecided
- unsettled
- unsure
