Ennui is a novel by Maria Edgeworth published in 1809. It is a fictitious memoir of the Earl of Glenthorn, an English man who experiences excessive boredom (ennui) and attempts to find novelty and meaning in life. Edgeworth began writing the novel before 1805, and though she said she finished it that year, she likely continued revising it until around 1808. Source: Wikipedia (en)