adj. 25B6; adjective
congenital defects : INBORN, inherited, hereditary, innate, inbred, constitutional, inbuilt, natural, inherent.
a congenital liar : INVETERATE, compulsive, persistent, chronic, regular, habitual, obsessive, confirmed; incurable, incorrigible, irredeemable, hopeless; unashamed, shameless; informal pathological.
acquired.