1. Potato
5. Basic
10. Verge
14. Melody
15. Extreme
16. Heath
17. Female given name
18. Narrow openings
19. Spanish duke
20. Close at hand
22. Inflammation
23. Republic in E Africa
24. Provoke
28. Exclamation of contempt
30. Author's insertion mark
34. High points
35. Long-continued practice
37. Make odorous
38. Republic on the E coast of Africa
39. Russian leaders
40. Fem. pronoun
42. Turn upside down
43. Understanding
44. Hire cars
47. Gardening tool
52. Trade
56. Pretended
57. Egg cell
58. Seaport in the Crimea
60. Fall short
61. Flat tableland with steep edges
62. Negatively charged ion
63. Enclosure
64. British WW2 machine gun
65. Storage center
66. Decays

Down

1. Stench
2. Rub through a strainer
3. Cause to lose one's nerve
4. A special loved one
5. Actively engaged
6. Entirely
7. Holdup
8. Showily imitative of art
9. Lethal fever
10. Computer letter
11. Dunce
12. Desert in E Asia
13. Part of a tape recorder
21. Ceremonial immersion in water
25. Search
26. West Vermont town
27. Soils
28. Bundle
29. Against
30. Comb of a cock
31. Ax-like tool
32. Horse of mixed color
33. Sin
36. Plant juice
41. Deformed lip
45. Capital of Jordan
46. Wood nymph
48. Postpone
49. Bird droppings
50. Decree
51. Tumbles
53. Above
54. Think
55. Walking stick
56. Breathe hard
59. Also