Definition of questionable adjective from the Oxford Advanced American Dictionary

     

    questionable

     adjective
    adjective
    NAmE//ˈkwɛstʃənəbl//
     
     
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  1. 1that you have doubts about because you think it is not accurate or correct synonym debatable The conclusions that they come to are highly questionable. It is questionable whether this is a good way of solving the problem.
  2. 2likely to be dishonest or morally wrong synonym suspect Her motives for helping are questionable.
questionably
 
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NAmE//ˈkwɛstʃənəbli//
 
adverb
See the Oxford Advanced Learner's Dictionary entry: questionable