1: Spy spying on a spy

5: Church group

10: Mausoleum

14: Shiite leader

15: Rub the wrong way

16: Listen to

17: Like a wet noodle

18: Appraisal

20: Fixed part of an electric motor

22: Long haul

23: Take to court

24: Unwrought iron

25: Time for kickball, maybe

27: One who knows the score

33: Many, many moons

34: Prevent, with 'off'

35: Tutu material

39: Hgts.

41: Massachusetts cape

42: Silently sullen

43: Blackthorn shrubs

45: Comerica Park ballplayer

48: Practical joke

49: Using both sides with equal frequency (like the letters in this puzzle's answer grid?)

52: __ dictum: passing remark

55: Capital of Phoenix?

56: Bleacher creature?

57: Thpeak like thith

60: Take stock of

64: Rapture

67: Olympic weapon

68: Meditation method

69: Frolics

70: Word before irons or chains

71: Cause of a bad air day

72: Sudden outpouring

73: Con job

1: Wire diameter units

2: Fail to include

3: Buddhist leader

4: Buyer, as in 'Buyer, beware'

5: Least prevalent

6: 'Sure thing!'

7: Digs of twigs

8: Kaput

9: Sandy tract

10: Quarterback Brady of the Patriots

11: Beyond beefy

12: They help people choose sides

13: Data storage units

19: Shooting game

21: Table scraps

26: Filthy deposit

27: Geographical seven

28: ___ tax

29: Not fooled by

30: Prickly plants

31: Duck

32: Tufted plant

36: Merrill Lynch's bull, e.g.

37: Oahu bash

38: Units of work

40: Place for the catbird?

44: Process ore

46: Sweep

47: St. and ave.

50: Pipe types

51: Adjusts, as a trip counter

52: Follows the leader

53: Pleasingly plump

54: Grown grub

58: Word on an octagon

59: Strong cotton

61: Multigenerational story

62: Antitoxins

63: Appear

65: Fail to keep up

66: Choose