[adjective] [not gradable] - not able to be healed or curedAs yet the illness is incurable.Parkinson's disease is a debilitating and incurable disease of the nervous system.(figurative) She is an incurable (= not able to be changed) optimist/pessimist.
INCURABLE
Meaning of INCURABLE in English
Cambridge English vocab. Кембриджский английский словарь. 2012