Congenital (6)
There are a few possibilities for this:
deep-seated
'congenital' is the definition.
(I know that congenital can be written as innate)
This is all the clue.
(Other definitions for innate that I've seen before include "quite natural" , "Bred in the bone, one might say" , "Inherent or inborn" , "Born" , "not needing to be taught" .)
'congenital' is the definition.
(I know that congenital can be written as inborn)
This is all the clue.
(Other definitions for inborn that I've seen before include "Congenital" , "naturally!" , "Innate, natural" , "Normally existing at birth" , "Existing from birth; innate" .)
'congenital' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for inbred that I've seen before include "from a restricted gene pool?" , "Present by nature" , "Lacking genetic variety" , "too much Montague blood?" , "Born of closely related people" .)
'congenital' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for deep-seated that I've seen before include "Firmly-established" , "Firmly fixed" .)