6. Johns, for short

10. Brief smokes?

14. Poseidon's domain

15. Once more

16. See 2D

17. As of the beginning

19. Queue

20. More uptight

21. Bid action, perhaps

22. Rural route

23. Source of cash

25. Certain exam

27. Like some tropical fevers

32. "As if!"

33. Carbon compound

34. Final, e.g.

36. Bay of Naples sight

40. Abbreviated catchall

41. Gun, e.g.

43. Blah

44. Works behind bars?

46. Liquidate

47. Bang-up

48. Sound of relief

50. Concrete preparation

52. Aper

56. Farm enclosure

57. Seed cover

58. "Cool" amt.

60. Tempt

65. Actor O'Shea

66. Obvious

68. Hymn of praise (var.)

69. Revise

70. Ointment

71. Wallop

72. Cleave

73. Tire feature

1. Room at the top, perhaps

2. A lot of land

3. Shade of green

4. Machine parts

5. Ingratiate

6. Non-clerical

7. Soon, to a bard

8. Reptile's defense

9. Baltic Sea country

10. Quit

11. Pelvis-related

12. Fixin' to

13. Shade of blue or gray

18. More chichi

24. Tops out

26. One giving a 25A

27. Convene

28. A chip, maybe

29. Advance

30. From dawn to dusk

31. Two-time U.S. Open winner

35. Slippers of sorts

37. High school event

38. One with a sari

39. Surefooted goat

42. Typewriter roller

45. Anatomical pouch

49. Laundry holder

51. Hereditary ruler

52. Roughs it

53. Architectural projection

54. Middle Easter rice dish (var.)

55. Pinata feature?

59. Anagram of nail

61. One-time Russian royal

62. Monty Python troupe member

63. Spanish sparkling wine

64. Checked out

67. "____ better be good!"