unnatural

adjectives

not in accordance with or determined by nature; contrary to nature

"an unnatural death"; "the child's unnatural interest in death"

unnatural

antonym

is similar to

effected by force or injury rather than natural causes

"a violent death"

see also

not in accordance with scientific laws

"what seemed to be paranormal manifestations"

is an attribute of

the quality of being natural or based on natural principles

"he accepted the naturalness of death"; "the spontaneous naturalness of his manner"

not normal; not typical or usual or regular or conforming to a norm

"abnormal powers of concentration"; "abnormal amounts of rain"; "abnormal circumstances"; "an abnormal interest in food"

abnormal, unnatural

speaking or behaving in an artificial way to make an impression

affected, unnatural

is derived from