1. Debt - The “b” is silent. 2. Subtle - The “b” is silent. 3. Doubt - The “b” is silent. 4. Knight - The “k” is silent. 5. Honor - The “h” is silent. 6. Hour - The “h” is silent. 7. Wrath - The “w” is silent. 8. Calm - The “l” is silent. 9. Half - The “l” is silent. 10. Island - The “s” is silent. 11. Listen - The “t” is silent. 12. Castle - The “t” is silent.
