JLPT N1
不退転
It means having a strong, unshakeable resolve to never back down from a goal.
Readings
Other forms
不退転の決意 unshakeable resolve
不退転の精神 indomitable spirit
Noun
Unyielding Determination
A firm, unbreakable conviction to achieve a goal without backing down, no matter the obstacles. The nuance is literally “no retreat.”
Example
彼 は 不退転 の 決意 で 、 その 困難 な プロジェクト に 挑んだ 。
He tackled the difficult project with unshakeable determination.
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