1: Attend

4: Religious truths

10: '___ ex machina'

14: Madame Tussaud's medium

15: Creature in a Tennessee Williams title

16: Drive train element

17: Pharaohs' symbol of power

18: September honoree

20: Less prosperous

22: Typographic units

23: Goes bad

24: Eagle's claw

27: Gains a lap

28: Fixing code

32: Members' payments

33: Not thinking well

34: Opposite of paleo-

35: Yang's opposite

36: Pester for payment

37: Scheduled

38: Put up preserves

39: List abbr.

40: Hams it up

42: Breathing space

43: Practically any bird, e.g.

45: Shows the door, perhaps

46: Show host

47: Mafia bosses

48: Quick-thinking

51: Smacked the baseball good and hard

54: Egotistical conversationalist

58: Electrify

59: PDA entry

60: Serves

61: Just released

62: Add-on for Congo

63: Tell Mom

64: 'Don't give up!'

1: Adult ugly duckling

2: Life of Riley

3: Start of a quip

4: Numbers

5: Grimm goons

6: Cluster bean

7: Chess piece

8: 'Not only that ...'

9: Tree fluid

10: Audacious

11: Firm head

12: Arm bone

13: Tennis match divisions

19: Orbital point

21: Braille markings

24: Half a score

25: One who waits

26: Humdingers

27: Plush rooms

28: Indicate

29: Fickle

30: Gets closer to

31: Depleted

32: Turns red, perhaps

33: 'Poison' shrub

36: Considered

41: Player's peg

42: Puff like a pooped pup

44: Removal key

45: Indelicate

47: Stay for a while

48: Uptight, slangily

49: Stare open-mouthed

50: Mischief-makers

51: Barbecue accessory

52: Large pitcher

53: Moist

55: Wharf pest

56: Some gametes

57: Butter square