Unnatural
WordNet
adjective
(1) Speaking or behaving in an artificial way to make an impression
(2) Distorted and unnatural in shape or size; abnormal and hideous
"Tales of grotesque serpents eight fathoms long that churned the seas"
"Twisted into monstrous shapes"
(3) Not in accordance with or determined by nature; contrary to nature
"An unnatural death"
"The child's unnatural interest in death"