Spelling List #23 (Words with Silent Letters) Keep this list at home to study. Students should use these 20 words to complete the weekly spelling activity. 1. crumb 2. wrapper 3. limb 4. wrong 5. climb 6. knee 7. knuckle 8. lamb 9. wrong 10. comb 11. knew 12. wreck 13. knotted 14. wren 15. know 16. plumber 17. numb 18. thumb 19. wrinkle 20. doorknob