Inborn, a.
Born in or with; implanted by nature; innate; as, inborn passions. Cowper.
Syn. -- Innate; inherent; natural.
Shades of meaning
Fernald has no entry of its own for inborn; he lists it under inherent.
Where he writes about it:
Inherent and intrinsic may be said of persons or things; congenital, inborn, inbred, innate, apply to living beings. — from inherent
Innate and inborn are almost identical, but innate is preferred in philosophic use, as when we speak of innate ideas; that which is inborn, congenital, or innate may be original with the individual, but that which is inbred is inherited. — from inherent