"For this cause God gave them up unto vile affections: for even their women did change the natural use into that which is against nature:" Rom 1:26
Dictionary Unnatural:- 1. contrary to the laws or course of nature. 2. at variance with the character or nature of a person, animal, or plant. 3. at variance with what is normal or to be expected: the unnatural atmosphere of the place. 4. lacking human qualities or sympathies; monstrous; inhuman:"