私信 sīxìn private message Origin Definitions Defs Strokes Stroke Words Sentences Sents sīxìn private message · to message 私 sī adverbverb secretly (bound form) secretly; privately; in a hidden or clandestine manner信 xìn nounverb information (bound form) information; news; message; wordsīxìn personal letter 私 sī nounadjective private (bound form) personal; private; belonging to an individual rather than the public or government信 xìn noun letter letter; mail; written correspondence