Ill-natured :: Ill-natured (a.) Intractable; not yielding to culture.
Lusus Naturae :: Lusus naturae () Sport or freak of nature; a deformed or unnatural production.
Natural :: Natural (a.) Fixed or determined by nature; pertaining to the constitution of a thing; belonging to native character; according to nature; essential; characteristic; not artifical, foreign, assumed, put on, or acquired; as, the natural growth of animals or plants; the natural motion of a gravitating body; natural strength or disposition; the natural heat of the body; natural color..
Natural :: Natural (a.) Conformed to the order, laws, or actual facts, of nature; consonant to the methods of nature; according to the stated course of things, or in accordance with the laws which govern events, feelings, etc.; not exceptional or violent; legitimate; normal; regular; as, the natural consequence of crime; a natural death..