incurable

incurable

/ɪnˈkjʊərəbl/

1 ​that cannot be cured

an incurable disease/illness

2 ​that cannot be changed

She's an incurable optimist.

Word Origin

Middle English: from Old French, or from late Latin incurabilis, from in- ‘not’ + curabilis (from Latin curare ‘take care of’, from cura ‘care’).