enigma
/eˈniɡma/ · B2 · noun · m
mystery
🧩 enigma = Greek ainigma, a riddle; sounds like 'eh-NIG-ma', a puzzle that stumps
Spanish enigma comes from Latin aenigma and Greek ainigma, meaning a riddle or obscure saying. English uses the same word, so the spelling is the anchor. Think of the Enigma cipher machine, famous for its unsolved code.