Boredom; listlessness and dissatisfaction resulting from lack of interest and motivation, resulting in lack of effort.(pr. ah-nwee)Walter Sickert chose Ennui as the title of his painting:Walter Richard Sickert (English, 1860-1942), Ennui, c. 1914, oil on canvas, 152.4 x 112.4 cm, Tate Gallery, London. See aestheticism and English art.Also see existentialism and expression.