Тоска is a Russian term that translates to a deep emotional state of longing or melancholy. It often describes a feeling of existential sadness or a yearning for something unattainable. This concept is frequently explored in Russian literature and art, reflecting the complexities of the human experience. The term is notably associated with the works of Fyodor Dostoevsky and Anton Chekhov, who captured the essence of тоска in their characters and narratives. It can also relate to the broader themes of Russian culture, where feelings of nostalgia and unfulfilled desires are prevalent.