不知所终 Traditional 不知所終 bù zhī suǒ zhōng 🔊 to vanish without a trace; to go missing + Keep this word Meanings bù zhī suǒ zhōng 不知所終 (idiom) to vanish without a trace; to go missing Its characters 不bùnot; noHSK 1知zhīto know所suǒactuallyHSK 5终zhōngend