1. "Dig in!"
4. Hitches
9. Left after doing 1A, perhaps
13. Reaction after doing 1A, at times
15. Uncanny
16. Part of a bird's beak
17. Inspiration
19. All fired up
20. Approval
21. Pro ___
22. Anatomical nerve network
23. Subjects of many Degas' paintings
25. Industrious one
27. Power source
30. Salon supply
31. Essence
32. Hairy biblical twin
35. Tart-tongued
38. Ready
39. Inspiration, in a way
41. Letters of credit?
42. Like Keebler workers
44. Aptly named tropical fruit
45. Conclusion
46. Key in
48. Pressure, in a way
50. Celt of NW France
52. Job openings, e.g.
54. Respiratory problem
55. Small freshwater fish
57. Top of a platter, e.g.
61. Comparable
62. Inspiration
64. Boy toys?
65. Word with case or class
66. Priestly garb
67. Do certain lawn work
68. Kind of surgery
69. Guinness book suffix