unnatural

adjective

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

- an unnatural death

- the child's unnatural interest in death

Similar word(s): affected, violent, supernatural, paranormal

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

Similar word(s): aberrant, deviant, deviate, anomalous, antidromic, atypical, irregular, brachydactylic, brachydactylous, defective, freakish, kinky, perverted, subnormal, supernormal, vicarious, insane, abnormal

3. speaking or behaving in an artificial way to make an impression

Similar word(s): agonistic, strained, artificial, contrived, hokey, stilted, constrained, forced, elocutionary, mannered, plummy, studied, affected