Source : Webster's Revised Unabridged Dictionary (1913)

Inborn \In"born`\, a.
   Born in or with; implanted by nature; innate; as, inborn
   passions. --Cowper.

   Syn: Innate; inherent; natural.

Source : WordNet®

inborn
     adj 1: normally existing at birth; "mankind's connatural sense of
            the good" [syn: {connatural}, {inbred}, {native}]
     2: present at birth but not necessarily hereditary; acquired
        during fetal development [syn: {congenital}, {innate}, {inherent}]