13
1. forestall 2. monotony 3. bombardment 4. iceberg 5. patriarch 6. cajolery 7. keelson 8. atrophy 9. gala-day 10. accentuation 11. deciduous 12. advancement 13. frontlet 14. embryo 15. hydraulics 16. cenotaph 17. jointure 18. Neapolitan 19. gastric 20. pentateuch 21. decimate 22. recommend 23. shallop 24. superstitious 25. recompense 26. emetic 27. zoölogy 28. muezzin 29. illimitable 30. lacerate