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Open the tool →涅而不渝 (niè ér bù yú) is a Chinese idiom (chengyu) meaning “to remain untainted or uncorrupted despite being in a corrupt or adverse environment; to preserve one's noble character and integrity”.
涅而不渝 is pronounced niè ér bù yú in Mandarin Chinese.
Literally, 涅而不渝 means “Dyed black but not altered”. It is used to mean “to remain untainted or uncorrupted despite being in a corrupt or adverse environment; to preserve one's noble character and integrity”.
涅:黑泥;渝:改变。用涅染也染不黑。比喻品格高尚,不受恶劣环境的影响