blood-curdling (adj.)youdaoicibaDictYouDict[blood-curdling 词源字典]
also bloodcurdling, 1817, from blood (n.) + present participle of curdle. Also formerly with a noun form, bloodcurdler "incident which freezes the blood," especially "sensational story," 1877, slang; also in use in this sense was blood-freezer (1886).[blood-curdling etymology, blood-curdling origin, 英语词源]