unnatural

/ˌən-ˈna-chə-rəl/

adjective

  1. not being in accordance with nature or consistent with a normal course of events

  2. not being in accordance with normal human feelings or behavior : perverse

  3. lacking ease and naturalness : contrived

irregular anomalous unnatural mean not conforming to rule, law, or custom. irregular implies not conforming to a law or regulation imposed for the sake of uniformity in method, practice, or conduct. anomalous implies not conforming to what might be expected because of the class or type to which it belongs or the laws that govern its existence.

plural noun

  1. causes other than old age or disease

deaths from unnatural causes