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Inherited, as determined through genes, but not necessarily congenitally present at birth. Some persons believe that stuttering, or at least some stuttering subtypes, may have an etiologic (causative) basis in geneticallyinherited traits, tendencies or predispositions.

Definition reprinted with permission from Hood, Stephen B. (editor) available from Stuttering Foundation of America: Stuttering Words (Publication No 2: Speech Foundation of America)