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Open the tool →旦旦信誓 (dàn dàn xìn shì) is a Chinese idiom (chengyu) meaning “to make a solemn and sincere vow or promise”.
旦旦信誓 is pronounced dàn dàn xìn shì in Mandarin Chinese.
Literally, 旦旦信誓 means “sincerely sworn oath”. It is used to mean “to make a solemn and sincere vow or promise”.
旦旦:诚实的样子;信誓:诚挚可信的誓言。誓言说得极为诚恳可信