Problematic
Part of speech: adjective
Definition: posing a problem; difficult to overcome or solve debatable; open to doubt unresolved or dubious doubtful or uncertain in its outcome
Part of speech: noun
Definition: A problem or difficulty in a particular field of study
Example sentence: I think the word 'earnest' kind of has a negative connotation on some level. I think one of the things that's happened is that being cynical is somehow conflated with being sophisticated. I think that's problematic, to say the least.
Debatable
Part of speech: adjective
Definition: Controversial. Not fully proved, open to debate, sometimes used humorously.Of a person, argumentative.A fitting subject for debate.
Example sentence: Clemens, Seaver, Gibson, Maddux - I just don't see myself in that category. I'm flattered that maybe it's debatable at this point.