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
The definition of elusive is being difficult to grasp or retain.
Having or full of knots
Named but not known or previously mentioned:
Free from doubt or confusion; certain:
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.