Final answer:
In 'The Raven,' the speaker tells the bird to leave because its repetition of 'Nevermore' deepens his sorrow over his lost love, Lenore, and disrupts his desire for solitude in his grief.
Step-by-step explanation:
The speaker in Edgar Allan Poe's The Raven tells the bird to leave because he is tormented by its persistent repetition of the word 'Nevermore.' This word reflects the speaker's deep despair and longing for his lost love, Lenore. As the raven continues to repeat this word, it serves as a painful reminder to the speaker of his unrecoverable loss, as well as the fact that he will never find peace or solace. The bird's presence and its one-word message exacerbate the speaker's anguish, prompting him to demand that the raven leave his home and allow him to return to his mourning in solitude.