| 1. | The smoke rolled away in sullen heaps. - from Moby Dick; or The Whale by Herman Melville |
| 2. | Heathcliff, dear you should not be sullen now. - from Wuthering Heights by Emily Bronte |
| 3. | Lower sullen and fast athwart and down the sky. - from Leaves of Grass by Walt Whitman |
| 4. | And now thy sullen notes send darkness through me. - from Leaves of Grass by Walt Whitman |
| 5. | 'Worse,' I replied, 'because more sullen with it.. - from Wuthering Heights by Emily Bronte |
| 6. | 'In the workhouse of this town,' was the sullen reply. - from Oliver Twist by Charles Dickens |
| 7. | Be at peace bloody flukes of doubters and sullen mopers. - from Leaves of Grass by Walt Whitman |
| 8. | "Not as long as you love him, I suppose," was the sullen answer. - from The Picture of Dorian Gray by Oscar Wilde |
| 9. | Our army foil'd with loss severe, and the sullen remnant retreating. - from Leaves of Grass by Walt Whitman |
| 10. | And let them die that age and sullens hav. - from The Complete Works of William Shakespeare by William Shakespeare |