From Longman Dictionary of Contemporary Englishenigmae‧nig‧ma /ɪˈnɪɡmə/ noun [countable]MYSTERIOUSsomeone or something that is strange and difficult to understandSYN mysteryThe neighbours regarded him as something of an enigma.Examples from the Corpusenigma• But despite all the efforts to make sense of the artist, he remains elusive, an enigma.• He was to a certainextent an enigma.• Madeleine was still very much an enigma to him.• It is something of an enigma how a man who could not bear to hurt a living thing could serve as defencesecretary.• Louisiana, though penetrated, remained an enigma.• Lorraine remains an enigma who is easy to admire but impossible to get to know.• It is as baffling a productionenigma as anything in Maclean's own life.• It is more like something surgical - the unpleasantshape of stumpyenigmas.• As I studied more about their past, I became more puzzled, and the enigmaexpanded.Originenigma(1500-1600)Latinaenigma, from Greek, from ainos"story"