1: Nerd

5: Coral reef

10: Final prelim

14: Type of arch

15: Embankment down by the riverside

16: Neural fiber

17: Moving

20: Slim swimmer

21: Spoilsports, e.g.

22: Dugout gear

23: Use a whetstone

24: Tune

25: One who keeps dropping things

31: Topples from power

32: Annul

33: It may be financial

35: Envelop

36: Food stickers

38: Without expending much energy

39: Chicken-to-be

40: Casino card game

41: New South Wales, for one

42: Insincere ladies' men

46: Used to be

47: You can beat it

48: Dan of 'Laugh-In'

51: Bagpipe sound

53: McBride of 'Boston Public'

56: Too highly valued, as a business

59: Keep an eye on

60: Place for tanning

61: Stable mate

62: Budgets make them meet

63: Pig noise

64: Big senior year event

1: Shower affection (on)

2: Shrek, e.g.

3: Down-to-earth

4: Barbie's ex-beau

5: Skiing style

6: Penn's partner

7: Football's contour

8: It may zoom in or out

9: '___ me think about it'

10: Firesign Theatre skit, e.g.

11: Stage direction

12: Make academic

13: Roadside stops

18: Locales

19: Compadre

23: URL opener

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

25: Scottish town

26: English class concern

27: Uproar

28: Cartridge contents

29: Noted Nehi drinker of TV

30: Delta deposits

31: Have markers out

34: Stain, as a fabric

36: Musical Domino

37: Eyeball

38: Short newspaper piece

40: Saint-Tropez specie, once

41: 'Hamlet' prop

43: Tony and Oscar

44: Time keeper?

45: Thoroughgoing

48: Repetitive routine

49: Where cookies might crumble

50: Go one's way

51: Stretch across

52: Drug unit

53: Undemocratic leader

54: Long lunch?

55: Footnote word

57: Balaam's mount

58: Troublemaker