The term 'Waterlily Painter' refers to the French Impressionist artist Claude Monet (5 letters). Monet is best known for his series of paintings depicting water lilies, which he painted in his garden at Giverny. He was a key figure in the development of Impressionism, a style of painting that focused on capturing the fleeting effects of light and atmosphere. Monet's works are some of the most recognizable and beloved in the history of art.