demonstrable Antonyms

undemonstrable imprecise feigned false fake fabricated equivocal dubious doubtful doubtable distorted fictitious groundless iffy cagey vague obscure indemonstrable incomplete inadequate improvised hypothetical disputed disputable bogus attributive assumed arguable answerable ambiguous affected adopted academical chimerical cod colour deficient debated debatable counterfeit controvertible controversial contradictable contestable concocted academic