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Across 2. Microsoft workplace messaging software 4. Shiny metal finish 5. Whoopi Goldberg, John Legend, and Audrey Hepburn have all won this 7. Leg enders 9. More fun than a barrel of 10. Loser to Obama 14. The face of a building 15. A chord consisting of three notes 16. Second only to Christianity in members 17. Nintendo game series starring heroine Samus 18. Online auction house 19. Last name of the man whose assassination is often cited as the start of WWI 20. What you might catch when the temperature is low 23. Source of the loudest sound in history 25. Deadliest dictator in history 26. Dog with acute olfactory abilities 30. Joking phone conversation "____ call" 31. Band responsible for 20x platinum album Rumors 32. Antique U.S. political party 38. He goes to infinity and beyond 41. You can win this or have it scrapped off at the dentist 42. 17th Element often used in pools 44. "I have a new ____ on life" 46. Popular hand sanitizer brand 48. Loser to Obama 49. The middle-most note of a standard piano 50. Georg who has won the most Grammys ever 51. Thin fried potatoes in Britain 52. Blender company that might wear all black 53. It's what makes a Subaru a Subaru 54. Adam sacrificed this bone to create Eve 55. This movie has 14 Oscar nominations; tied for first all time

Down 1. Her hips don't lie 3. Seven to Julius Caesar 6. "Medium" at Starbucks perhaps 8. Living people have one of these 9. Mermaids may have actually been these mammals 11. Citrusy ingredient in a mojito 12. The highest U.S. windspeed occurred in this state 13. Music speed diminisher 14. Flattest U.S. State 20. The opposite of order 21. This is broken with introductions 22. Green in tint or color 24. -273.15 Celsius equals 0 of this unit 26. Relating to cattle 27. Standard web page language 28. 2010 mind-bending adventure movie directed by Christopher Nolan 29. The square root of 144 33. Its' capital is Montevideo 34. Giggling audibly, in text lingo 35. Largest mountain by total height from the base 36. A note that follows So 37. Chickpeas+Tahini+Oil+Salt= 39. Prefix associated with stars or other celestial bodies 40. Either Treble or Bass 41. Most popular sticky note brand 43. Governments and companies both issue these debt pieces 45. Unreliable car purchase, colloquially 47. Outside Viewer