{"word":"nemesis","date":"2026-09-22","partOfSpeech":"noun","pronunciation":"NEM-uh-siss","definition":"an opponent or enemy that is very difficult to defeat","example":"She will be playing against her old nemesis for the championship.","etymology":"The word nemesis comes from Greek νέμεσις (nemesis), meaning \"retribution\" or \"vengeance\", which is derived from νείν (nein), to deal out. The term entered English around 1570, initially referring to the goddess of retribution in Greek mythology, and later evolving to describe a formidable opponent.","source":"merriam-webster","sourceUrl":"https://www.merriam-webster.com/word-of-the-day/nemesis-2026-09-22","fetchedAt":"2026-09-22T07:39:01.344Z","cached":false}