untold (adj.)youdaoicibaDictYouDict[untold 词源字典]
Old English unteald, "not counted or reckoned," from un- (1) "not" + past participle of tell (v.) in its original numerical sense. Similar formation in Middle Dutch ongetellet, German ungezahlt, Old Norse utaliðr. Meaning "not related or recounted" is recorded from late 14c.[untold etymology, untold origin, 英语词源]