1. (informal) Of the highest quality.
4. (British) Your grandmother.
7. (Babylonian) God of wisdom and agriculture and patron of scribes and schools.
11. Tag the base runner to get him out.
12. A flat wing-shaped process or winglike part of an organism.
13. A blue dye obtained from plants or made synthetically.
14. A dark-skinned member of a race of people living in Australia when Europeans arrived.
15. A crystalline rock that can be cut and polished for jewelry.
16. A small island.
17. The capital and largest city of Yemen.
19. A master's degree in fine arts.
21. (combining form) Former.
22. A silvery ductile metallic element found primarily in bauxite.
24. An agency of the United Nations affiliated with the World Bank.
28. A master's degree in business.
31. Title for a civil or military leader (especially in Turkey).
32. A Chadic language spoken south of Lake Chad.
35. An excavation that is (usually) filled with water.
41. Naked freshwater or marine or parasitic protozoa that form temporary pseudopods for feeding and locomotion.
43. Of or like a cecum.
45. A compartment in front of a motor vehicle where driver sits.
46. The cry made by sheep.
48. Gymnastic apparatus consisting of two parallel wooden bars supported on uprights.
49. (Irish) Mother of the ancient Irish gods.
50. A defensive missile designed to shoot down incoming intercontinental ballistic missiles.
51. A slight rounded elevation where the malleus attaches to the eardrum.

1. Squash bugs.
2. A clique that seeks power usually through intrigue.
3. Very dark black.
4. Kamarupan languages spoken in northeastern India and western Burma.
5. Fermented alcoholic beverage similar to but heavier than beer.
6. An embroidered rug made from a coarse Indian felt.
7. Submerged aquatic plant having narrow leaves and small flowers.
8. The part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands.
9. A digestive juice secreted by the liver and stored in the gallbladder.
10. Genus of Eurasian spiny shrubs.
18. A former agency (from 1946 to 1974) that was responsible for research into atomic energy and its peacetime uses in the United States.
20. The federal agency that insures residential mortgages.
23. A tax on employees and employers that is used to fund the Social Security system.
25. Having undesirable or negative qualities.
26. A soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal.
27. A rare silvery (usually trivalent) metallic element.
29. Naked freshwater or marine or parasitic protozoa that form temporary pseudopods for feeding and locomotion.
30. A radioactive transuranic element.
33. A white linen liturgical vestment with sleeves.
34. A plant hormone promoting elongation of stems and roots.
36. A strategically located monarchy on the southern and eastern coasts of the Arabian Peninsula.
37. A fraudulent business scheme.
38. An important seaport on the Island of Cebu in the Philippines.
39. An aggressive remark directed at a person like a missile and intended to have a telling effect.
40. In addition.
42. A loose sleeveless outer garment made from aba cloth.
44. A rotating disk shaped to convert circular into linear motion.
45. A chronic inflammatory collagen disease affecting connective tissue (skin or joints).
47. The blood group whose red cells carry both the A and B antigens.
48. (informal) Roused to anger.