doubtful

Synonyms

arguable, controvertible, debatable, disputable, doubtable, issuable, moot, negotiable, questionable;

Antonyms

accomplished, certain, hands-down, inarguable, incontestable, incontrovertible, indisputable, indubitable, irrefragable, positive, questionless, settled, sure, unanswerable, unarguable, unchallengeable, undebatable, undeniable, unquestionable;

Near Antonyms

irrefutable;

definite;

unambiguous, unequivocal;

absolute, clear, conclusive, decisive;

uncontested, undisputed;

Related Words

contradictable, refutable;

controversial, debated, disputed;

dubious, iffy, inconclusive, indecisive, problematic (also problematical), shaky, uncertain;

academic (also academical), hypothetical, speculative, theoretical (also theoretic);

ambiguous, equivocal;