1: Grates upon

6: Use UPS

10: Big senior year event

14: Crosswise to the keel

15: Scrabble letter

16: No longer green

17: Coup d'état follow-up

18: They may say 'uncle'

20: Authenticated

22: Joe-to-go packets?

23: 'In what way?'

24: Smidge

25: Place (a bet)

26: Bit of high jinks

31: 1990 Best Actor Jeremy

32: Feed seed

33: Do a spit take

37: Stuff to the gills

38: Voting places

40: Fuzzy fruit

41: Did in, old-style

42: A white one is small

43: Sheets

44: Outside consultants?

47: 28,800 seconds before midnight

50: Cartridge contents

51: Tennis shot

52: Memorized

54: Avoid

59: Like differences of concern in tissue typing

61: Depart

62: Chilled, in a way

63: Demolish

64: White wading bird

65: Crimsons

66: Let fall

67: House portals

1: Indian king

2: Share a border with

3: On cloud nine

4: Cocktail hour spread

5: Huge successes

6: Scatters

7: Hurried

8: Hardly hale

9: Russian Revolution participants

10: Fuddy-duddy

11: Paris, to Romeo

12: La Scala offering

13: Untidy

19: Toilet roll holder

21: Diminutive dog

24: Old-time telephone feature

26: Debutante, typically

27: Spoken

28: Memo

29: Was certain of

30: ___ up (hiding)

33: Do without

34: State tree of Maine

35: Large pitcher

36: Finishes first

38: Hothouse containers

39: Sty cry

43: Like wine bottles

44: Heather

45: Processed prosciutto

46: Massachusetts cape

47: Natural ability

48: Coppers in Coventry

49: Bred

53: Disposes (of)

54: Tag info

55: Utah's state flower

56: Tropical root

57: At all

58: Spot and Fido

60: 'Uh uh'