In Japanese, the verb 治る (meaning "to to heal / recover (intransitive)", JLPT N4) conjugates in the Past Negative Casual form as 治らなかった (naoranakatta). Verb group: Group 1.
Context Example
病気が治らなかった。
Byouki ga naoranakatta.
The illness did not heal.
What is the Past Negative Casual conjugation of 治る (naoru)?
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