1. Mail place (abbr.)
2. Priestly garb
3. Be on the alert
4. Goof-offs
5. Opportunities, so to speak
6. "I" problem
7. Query
8. De facto
9. Thai currency
10. Part of HOMES
11. Treat badly, in slang
13. Fixed
15. Like some modern clocks
18. Ancient debarkation point
20. "Little piggies"
23. Double agents
24. Kind of nerve
25. First of six popes
26. Donates
27. "Hurry along!"
28. Part of a TV feed
29. Back, at sea
31. Come-ons
34. Taj Mahal, for one
35. Way of life, so to speak
37. In a bustling way
38. Fall flat
40. Cuban exports
41. Urban blight
43. Origami, e.g.
44. See 49A
45. Casting need
46. Any thing
48. Fancy little case
50. "Look here!"
51. Barbie's former beau
53. Fraction of a yen