of/from natural causes

: based on an inherent sense of right and wrong

: being in accordance with or determined by nature

: having or constituting a classification based on features existing in nature

: one born without the usual powers of reason and understanding

: a sign ♮ placed on any degree of the musical staff to nullify the effect of a preceding sharp or flat

: a note or tone affected by the natural sign

: a reason for an action or condition : motive

: something that brings about an effect or a result

: a person or thing that is the occasion of an action or state

: to serve as a cause or occasion of

: to compel by command, authority, or force