soothsayer (n.)youdaoicibaDictYouDict[soothsayer 词源字典]
mid-14c., zoþ ziggere (Kentish), "one who speaks truth,;" late 14c., sothseggere, "fortune-teller;" see sooth + say. Old English had soðsagu "act of speaking the truth."[soothsayer etymology, soothsayer origin, 英语词源]