1‘the extent to which personality is inherited is debatable’
arguable, disputable, questionable, open to question, open to debate, subject to debate, controversial, contentious, doubtful, open to doubt, in doubt, dubious, uncertain, unsure, unclear, vague, borderline, inconclusive, moot, unsettled, unresolved, unconfirmed, undetermined, undecided, unknown, up in the air, not yet established
problematical, puzzling, perplexing, riddling
a controversial subject, a live issue, a moot point, a matter of opinion
informal iffy, on the back burner, on ice
rare controvertible, unestablished
We take a look at several popular, though confusing, punctuation marks.