1: Trudge, as through sludge

5: Indian music

9: Put into the overhead bin

13: Pumice source

14: Scratched (out)

15: Moderate gray

16: Comparisons

18: Invalidate legally

19: 'Silent' prez, familiarly

20: Moving vehicles

21: Most prudent

22: Howard Keel movie musical

24: Traffic lane marker

25: Positron, e.g.

31: Hair fixers

34: Battery terminals

35: Fail to keep up

36: Dollar competitor

37: Family man

38: Casino card game

39: Itty-bitty

40: Coins

43: Sums up

44: Bumbling ones

47: Speak well of

48: Crib toy

52: West Pointers

55: Scrawny

57: Backboard attachment

58: Clued in

59: Magnetic mineral

61: Prepares for vacation

62: 'No ifs, ___, or buts!'

63: Sesame starter?

64: Spots

65: ___ fiber (flax, hemp, ramie, or jute)

66: Geek's cousin

1: Hanging loose

2: Island near Molokai

3: Ellipsoids

4: Hoedown honey

5: Henley event

6: Analogous

7: Turns to the right

8: NPR has none

9: Third-generation Japanese-American

10: Ditty

11: Important work

12: Lash mark

15: Spoils

17: Where cookies might crumble

21: Became threadbare

23: Bulk

24: One responsible for managing clubs

26: 'Really!'

27: Cop game

28: Attired

29: Piecrust ingredient

30: Qualities of the conceited

31: Stare stupidly

32: '___ Cowgirls Get the Blues'

33: Stead

38: Take nothing in

40: Pacific rays

41: Favorable factor

42: Sincerely zealous

45: Store salespeople

46: Popular NBC soap, for short

49: Figure of speech

50: Large ship

51: Correct copy

52: Sleeveless outer garment

53: On vacation, perhaps

54: Carp cousin

55: ___ fide

56: Track figures

59: Bio class setting

60: Bon or won follower