That can be supported by argument
Being such that formal argument or discussion is possible.
Subject to or causing doubt:
Liable to exception; open to objection
Subject to or open for discussion or debate; debatable
Posing a problem; difficult to solve:
Not definitely as specified; uncertain
Subject to change; variable:
Having two or more possible meanings
Showing bad taste.
The definition of dubious is something that is unlikely to be true.
Subject to doubt or question; uncertain.
Not conclusive or final; not leading to a definite result
Not decisive; not conclusive or final
Not yet settled, concluded, or known; doubtful or inconclusive
Uncertain of the facts.
(Informal) Not definite; containing doubtful elements; dependent upon varying conditions
Named but not known or previously mentioned:
Free from doubt or confusion; certain:
The definition of elusive is being difficult to grasp or retain.
Having or full of knots
Find another word for problematical. In this page you can discover 34 synonyms, antonyms, idiomatic expressions, and related words for problematical, like: arguable, contested, debatable, disputable, doubtful, exceptionable, moot, mootable, problematic, questionable and uncertain.