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Open the tool →知无不尽 (zhī wú bù jǐn) is a Chinese idiom (chengyu) meaning “to tell all one knows without reservation”.
知无不尽 is pronounced zhī wú bù jǐn in Mandarin Chinese.
Literally, 知无不尽 means “Know all, tell all”. It is used to mean “to tell all one knows without reservation”.
凡是知道的没有不尽说的。形容发表意见毫无保留