Incurable
Noun and の adjective
ふじ
ふち
不治のがんで、よ命三ヶ月だとせん告されました。
I was diagnosed with an incurable cancer and I've been given three months to live.
私の息子は、不治ののうしっかんと戦っています。
My son is fighting an irreversible brain disorder.
コウイチは一度不治の病に倒れ、「俺たちは必ず、また会えるよ」とビエトに言い残し亡くなったのですが、言葉通り次の日にはオフィスに出勤し、以前と全く同じように業務をこなしました。
When Koichi fell incurably ill and died, his last words to Viet were, "We will meet again." True to his words, he came back to the office the next day and did everything the same as he had before.
When you can not cure something, this is a problem of incurability.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.