non·​nat·​u·​ral | \ˌnän-ˈna-chə-rəl, -ˈnach-rəl\

Definition of nonnatural 

: not natural a nonnatural way of viewing things Although these anomalous events are beyond nature, in one sense, proponents of them seek to offer some kind of empirical evidence to support their hypotheses that there are nonnatural, nonmaterial, or spiritual processes at work in the universe.— Paul Kurtz Three years from now, gunfire may surpass cars to become the leading cause of nonnatural death in the United States.Newsweek

First Known Use of nonnatural

1650, in the meaning defined above

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The first known use of nonnatural was in 1650

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