Across 1. Regular hexahedron 5. Some teachers may give you a bit of extra credit for finding one 9. Hardly level 14. Somewhat like an ellipse 15. Expensive 16. Fracas 17. Tempt 18. See 60 Across 20. Eastern Europeans 22. Something politicians like to have 23. PowerPoint medium, occasionally 26. Actor Wood 30. Smartypants (hyph.) 32. Act like an amateur 33. Ruckus 35. Brought up 37. Sum, ___ , fui 38. Josh 39. .001" 40. Toothpaste, perhaps 42. Slippery animal 43. "I say!" 45. As yet 47. Ami de "ne" 48. Targeted (at) 50. What college professors hate to do 52. Rotor's counterpart 54. Ancient Spanish city 56. Wear away 58. Something that improves anyone's appearance 60. See 18 Across 65. Improve, as writing 66. Begin to peter out 67. : in a proportion 68. Sandal brand 69. Less constricted 70. Part 3 of a suit? 71. Small bills

Down 1. Many aspire to be gens. 2. That weird thing that hangs down in the back of your mouth 3. See 27 Down 4. Smallest 2-digit prime 5. 6-ptrs. 6. Political anagram and synonym of "aye" 7. Packages 8. Type of exam 9. Small vial 10. 4:00 p.m., give or take 11. 3 Down was a sen. there 12. Floral garland 13. Perfection, on many rating scales 19. Garden tool 21. Word with brain or electrical 24. Exercise patience for 25. One who can help your clothes fit properly 27. See 3 Down 28. Clueless 29. Impractical footwear 31. Slurred, in music 33. Answers to some geometry problems 34. 9, for example 36. Repel 41. Clues 44. French word used in international politics; extremely common in the 1970s but seldom heard today 46. Die 49. Type of window 51. Regain consciousness 53. Mythical bird, or acronym for Taiwan 55. "It's ___!" 57. CCCI + CCCIII 59. Greek vowels 60. Durable bone 61. ___-Wan Kenobi 62. Endured, as a teacher or an illness 63. Word grunted near the beginning of most Monty Python episodes 64. Word used at the end of a gullibility test