Source : Webster's Revised Unabridged Dictionary (1913)

Nonmoral \Non*mor"al\, a.
   Not moral nor immoral; having no connection with morals; not
   in the sphere of morals or ethics; not ethical.

Source : WordNet®

nonmoral
     adj : lying outside the bounds of morals or ethics; "imagination
           is of its nature nonmoral"; "infants are nonmoral"