Keynes, John Maynard Syllabification: (Keynes, John Maynard)Pronunciation: /kānz/Definition of Keynes, John Maynard 1st Baron (1883–1946), English economist. He laid the foundations of modern macroeconomics with The General Theory of Employment, Interest and Money (1936). Derivatives KeynesianPronunciation: /ˈkānzēən/ adjective & noun KeynesianismPronunciation: /ˈkānzēəˌnizəm/ noun Keynes, John Maynard in other Oxford dictionaries Definition of Keynes, John Maynard in the British & World English dictionary