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noun (common) (futsuumeishi), noun or participle which takes the aux. verb suru, intransitive verb
going through thick and thin to attain one's objective, enduring unspeakable hardships for the sake of vengeance
yojijukugo-
私は長い間臥薪嘗胆の苦しみをなめた。
I have struggled under extreme difficulties for a long time.
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