apodictic (adj.)youdaoicibaDictYouDict[apodictic 词源字典]
"clearly demonstrated," 1650s, from Latin apodicticus, from Greek apodeiktikos, from apodeiktos, verbal adjective of apodeiknynai "to show off, demonstrate," literally "to point away from" (other objects, at one), from apo "off, away" (see apo-) + deiknynai "to show" (see diction).[apodictic etymology, apodictic origin, 英语词源]