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forbearance (in the face of difficulty, persecution, etc.)
忍辱の精神で困難に立ち向かった。
With a spirit of forbearance, they faced the difficulties.
仏教では忍辱は六波羅蜜の一つとされる。
In Buddhism, forbearance is considered one of the six perfections.
忍辱を重ねた末に道が開けた。
After enduring repeatedly, the way forward opened up.