1: Sis or bro

4: Basketball game stopper

8: Mop up

12: Hi-fi description

13: Gumbo vegetable

14: Studied (with 'over')

16: Dirt, so to speak

17: 'What do you ___?'

18: Summarize

19: A long way off

20: Take wing

21: Tint

23: Biathlon need

24: Physique

26: Kitten's cry

28: Bluto's assent

30: Mont Blanc, for one

32: Sty list?

36: Woman of wealth, often

39: Dorothy from Kansas

41: Pout

42: Kind of moron?

43: Novel setting for Solzhenitsyn

45: Fancy marble

46: Go to sleep, with 'out'

48: Narrow margin of victory

49: It's raised on the farm

50: Joint with a cap

51: Amt.

52: 'What have we here?'

54: Not the other guy

56: Feeling expressed in many a Woody Allen film

60: 'Friendly' pronoun

63: Carp constantly

65: Go, with 'on down'

67: Crew implement

68: Almost eternity

70: Drummer's rhythm

72: Obnoxious

73: Tea type

74: Was in the red

75: Without expending much energy

76: Post-Mardi Gras period

77: African antelopes

78: Emolument

1: Navigational aid

2: Prefix with red

3: Haunting sound

4: Some meat

5: Pretty good

6: Ossuary

7: It may get plastered

8: Lively outing

9: Deep distress

10: Circle sections

11: Honker

12: Bend out of shape

15: Printer spec.

20: Whimsical

22: Diamond judge

25: Fifth calendar page

27: Secretary's stat

29: Chicken-to-be

30: Stainless steel or brass

31: Meadows

33: Greek letter

34: Cluster bean

35: Stitched

36: Door fastener

37: Neural fiber

38: Unit of force

40: Your father's sister

44: Metro maker

47: Pivotal

49: '___ appétit!'

51: Functioning as

53: Come to pass

55: First symptoms

57: Edam's cousin

58: In a melancholy manner

59: Deuce topper

60: Dance like Hines

61: Command to Fido

62: Farm team neckwear

64: Rum drink

65: ___ cheese

66: Cutlass Supreme, e.g.

69: Dauphin's denial

71: Have stuff

72: Lambaste