adj. doubtful, dubious, debatable, moot, disputable, borderline, suspect, suspicious, shady; open to question, in question, in dispute, problematic(al), uncertain, arguable, unsure, unreliable, ambiguous The evidence shows that the defendant engaged in questionable banking practices while a director of Offshore Ltd The advantages of quick divorce are questionable.
QUESTIONABLE
Meaning of QUESTIONABLE in English
Oxford thesaurus English vocab. Английский словарь Оксфорд тезаурус. 2012