1. A small island.
5. Informal terms for a mother.
8. A doctor's degree in dental surgery.
11. Type genus of the Aceraceae.
12. A federal agency established to coordinate programs aimed at reducing pollution and protecting the environment.
13. The upper side of the thighs of a seated person.
14. Earn on some commercial or business transaction.
15. An emotional response that has been acquired by conditioning.
16. The compass point midway between northeast and east.
17. A public promotion of some product or service.
20. A radioactive element of the actinide series.
23. Largest crested screamer.
26. A Chadic language spoken south of Lake Chad.
30. An informal term for a father.
33. Light informal conversation for social occasions.
34. The large trunk artery that carries blood from the left ventricle of the heart to branch arteries.
36. A small cake leavened with yeast.
39. Informal terms for a mother.
42. A loose sleeveless outer garment made from aba cloth.
46. A serve that strikes the net before falling into the receiver's court.
47. (Babylonian) God of storms and wind.
48. Type genus of the family Myacidae.
49. An agency of the United Nations affiliated with the World Bank.
50. Having nine hinged bands of bony plates.
51. Having undesirable or negative qualities.

1. The United Nations agency concerned with atomic energy.
2. Any of a number of fishes of the family Carangidae.
3. (Irish) The sea personified.
4. Bulky grayish-brown eagle with a short wedge-shaped white tail.
5. Joint capital (with Riyadh) of Saudi Arabia.
6. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
7. God of death.
8. A chronic skin disease occurring primarily in women between the ages of 20 and 40.
9. (Irish) Mother of the Tuatha De Danann.
10. A detailed description of design criteria for a piece of work.
18. South American wood sorrel cultivated for its edible tubers.
19. A condition (mostly in boys) characterized by behavioral and learning disorders.
21. A number of sheets of paper fastened together along one edge.
22. A genus of Platalea.
24. (astronomy) The angular distance of a celestial point measured westward along the celestial equator from the zenith crossing.
25. The capital and largest city of Japan.
27. Title for a civil or military leader (especially in Turkey).
28. A soft silvery metallic element of the alkali earth group.
29. The blood group whose red cells carry both the A and B antigens.
31. The face or front of a building.
32. A large fleet.
35. A hard gray lustrous metallic element that is highly corrosion-resistant.
37. In bed.
38. A Chadic language spoken south of Lake Chad.
39. A radioactive gaseous element formed by the disintegration of radium.
40. Common Indian weaverbird.
41. A small nail.
43. A period of time spent sleeping.
44. A light touch or stroke.
45. The executive agency that advises the President on the federal budget.
46. A silvery soft waxy metallic element of the alkali metal group.