1. Light
2. Carbon compound
3. Tolstoy's Karenina
4. Actor Brad
5. Little giggle
6. Churchill's "so few" (abbr.)
7. Anagram of "cot"
8. Real low life?
9. Scant
10. Bond player
11. PGA member Els
12. Allots, with "out"
13. Aahs partners
18. Plus
19. Brides title
23. Black, in poetry
24. Least
26. Witty remarks
27. Rue the run
28. Tennis whiz
29. Alike
31. Tatters
33. III to II, e.g.
34. Ticks off
36. Drink from a dish
37. Passe do
38. Recipe direction
39. Clark of the Daily Planet
40. Cultural pursuits
42. Opening time, maybe
46. Extreme poverty
48. Barbaric
49. Like a rainbow
50. Thai cabbage?
51. Bro's sib
53. It's not gross
54. Blind alternative
55. BBs, e.g.
56. Ancient Germanic invader
58. Way, way off
59. Bowl over
60. Often used in sushi
61. "Dang!"
63. Precious item
64. Biddy