1. Drop a line?
2. A chip, maybe
3. Abrupt
4. Forest denizen
5. Tangle
6. Blood typing system
7. British flyers
8. "The Sound of Music" figure
9. Laser light
10. Arum lily
11. Bar order, with "the"
12. Pronouncements
13. Japanese spirits
18. Fish pond inhabitant, perhaps
19. Grooved on
23. Antitoxins
24. One to whom an assurance is given
26. Advil target
27. Chowder morsel
28. **** review
29. Ogler
31. Flight data, briefly
33. Jokester
34. Aid illicitly
36. Best seller
37. The Auld Sod
38. Inspiration
39. Back talk
40. Don't believe it
42. Throw forcefully
46. Cooling-off period
48. Wild sheep of Asia
49. Prepare for winter takeoff
50. Little people
51. Equals
52. Greek cross
54. "Chicago" lyricist
55. Slender nails
57. Erupt
59. Cut, maybe
60. "When it's ___" (old riddle answer)
61. Go it alone
62. Cookbook abbr.
64. Take a load off
65. Pompous person