Contradistinctive :: Contradistinctive (a.) having the quality of contradistinction; distinguishing by contrast.
Distinctive :: Distinctive (a.) Marking or expressing distinction or difference; distinguishing; characteristic; peculiar.
Distinctive :: Distinctive (a.) Having the power to distinguish and discern; discriminating.
Undistinctive :: Undistinctive (a.) Making no distinctions; not discriminating; impartial.