1. What one isn't?
2. Confined, with "up"
3. Watchful
4. Nod, maybe
5. Tea types
6. Endured
7. Describe
8. Handling the situation
9. Art lovers
10. Cool dessert
11. Hip bones
12. Small liquid measure
13. He's a real Coward?
22. Minnesota twins?
23. Anagram of the Greek war god
25. Flaccid
27. Recipe amt.
28. Is important
29. Laugh-a-minute folks
30. Keats creations
31. Alert
32. One kind of measure
34. [Sigh]
36. Like a busybody
38. Type of foil
39. Butter servings
41. Where things crop up?
42. USPS employee
44. Not too often, i.e.
45. Down under denizen
47. Passe dos
48. Icelandic epic
49. Aspen alternative
50. And others, for short
51. Double negative?
52. Playful prank
54. Not working, e.g.
55. Checked out
59. Fab Four's fifth?