Enigma
来自Big Physics
mid 16th century: via Latin from Greek ainigma, from ainissesthai ‘speak allusively’, from ainos ‘fable’.
wiktionary
From Latin aenigma(“riddle”), being derived itself from the Ancient Greek verbal noun αἴνιγμα(aínigma, “dark saying, speaking in riddles”).
etymonline
enigma (n.)
1530s, "statement which conceals a hidden meaning or known thing under obscure words or forms," earlier enigmate (mid-15c.), from Latin aenigma "riddle," from Greek ainigma (plural ainigmata) "a dark saying, riddle," from ainissesthai "speak obscurely, speak in riddles," from ainos "tale, story; saying, proverb;" according to Liddell & Scott, a poetic and Ionic word, of unknown origin. General sense in English of "anything inexplicable to an observer" is from c. 1600.
