1: Has lumbago

6: Track figures

10: Whites or darks in a pile

14: Not for the thin-skinned

15: Tape spool

16: Mercury or Saturn

17: Uppercase

18: Toilet roll holder

19: In bad humor

20: Unabridged

22: Blended-family prefix

24: Tap output

25: Play like a puppy

27: Thief

29: Loiterers

33: Undercover worker

34: Senate votes

35: Film follower

37: Pants' parts

41: Dauphin's denial

42: Dunderheads

44: Life story, for short

45: Finito

48: Brouhaha

49: Sew up

50: Gigantic 'Arabian Nights' flyer

52: Dubai and Abu Dhabi

54: Hi-fi systems

58: Observed

59: Merlot cask

60: Juniors, usually

62: Shrimp dish

66: Flute or saxophone variety

68: Secular

70: Coral reef

71: Took to the air

72: Thus

73: Flower part

74: Flowerless decorative plant

75: Refute

76: Many fast-food workers

1: Up to the task

2: Extended family

3: Injure

4: Surrounds

5: Unsaturated alcohol

6: Food scrap

7: '___ ex machina'

8: Items in red

9: Chilling downpours

10: Tongues do it

11: Ear-related

12: Gate alternative

13: Greek hymnist

21: Correct copy

23: Enlivens (with 'up')

26: Smoking gun, so to speak

28: Bluto's assent

29: Unit of force

30: Many millennia

31: Magician's prop

32: Edge along

36: Wanders

38: Assist larcenously

39: Spork part

40: Repairs the outfield

43: Double agents

46: Goof up

47: 'That ___ it!'

49: Dugong's cousin

51: Sat on a sill, as a pie

53: Given a new look

54: Body of military officers

55: Tutu material

56: 'Come on in'

57: Game trap

61: Indication

63: Gloomy Gus

64: Course of action

65: Misfortunes

67: Have stuff

69: Coquettish