1. Burden
5. Pretentious person
9. Shrub
13. Left
14. Auspices
16. Sloth
17. Shoestring
18. What something costs
19. Fourth dimension
20. Kind of whale
22. Hammed it up
24. Anagram of "Boon"
26. Geologic period
27. Greek letter
30. Brooms
33. Like Buckminster Fuller's dome
35. Routine
37. Paddle
38. Ascent
41. Twelve in Roman numerals
42. View
45. Vigorous exercises
48. Brought out
51. Ripple
52. Pandemonium
54. Big bash
55. Similar
59. Asian aquatic plant
62. Jeer
63. Rewrites
65. Egyptian river
66. Beige
67. Relative magnitudes
68. Departed
69. Slaloms
70. Exploit
71. Break in two
2. Half-moon tide
3. Unchecked for lewdness
4. Progestin or androgen
5. Drain
6. Adopted son of Claudius
7. Pointed arch
8. Arm muscles
9. Meat retailer
10. Module
11. Identical
12. Colored
15. Goat antelope
23. Passed with flying colors
25. Pear type
27. Freudian topics
28. Tranquility
29. Zero
31. Whimsical
32. Portion
34. US spy agency
36. Itemize
39. Kitten's cry
40. Boast
43. Central part
46. Egg-shaped
47. Is owned by
49. Keen
50. Thingamajig
53. Hotel apartment
55. Anagram of "Sage"
56. Notch
57. Dugout shelter
58. Anagram of "Ties"
60. Arm bone
61. Exude
64. Lay turf