Congenital, a.
Etymology: [From Congenite.]
Existing at, or dating from, birth; pertaining to one from birth; born with one; connate; constitutinal; natural; as, a congenital deformity. See Connate.
Shades of meaning
Fernald has no entry of its own for congenital; 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
Congenital is frequent in medical and legal use with special application to defects; as, congenital idiocy. — 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