1. A condition (mostly in boys) characterized by behavioral and learning disorders.
4. An independent group of closely related Chadic languages spoken in the area between the Biu-Mandara and East Chadic languages.
8. (usually followed by `to') Naturally disposed toward.
11. A workplace for the conduct of scientific research.
12. A slick spokesperson who can turn any criticism to the advantage of their employer.
13. A unit of length of thread or yarn.
14. A public promotion of some product or service.
15. (Irish) Mother of the ancient Irish gods.
16. A gradual decline (in size or strength or power or number).
17. A region of Malaysia in northeastern Borneo.
21. A loose sleeveless outer garment made from aba cloth.
23. The branch of computer science that deal with writing computer programs that can solve problems creatively.
24. Title for a civil or military leader (especially in Turkey).
25. A river in north central Switzerland that runs northeast into the Rhine.
26. (British) An open river valley (in a hilly area).
29. East Indian tree bearing a profusion of intense vermilion velvet-textured blooms and yielding a yellow dye.
32. Aircraft landing in bad weather in which the pilot is talked down by ground control using precision approach radar.
34. A soft silvery metallic element of the alkali earth group.
35. Someone who works (or provides workers) during a strike.
37. A soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal.
39. Functioning correctly and ready for action.
40. The district occupied entirely by the city of Washington.
43. United States singer and film actor (1904-1977).
46. King of Saudi Arabia since 1982 (born in 1922).
48. A plant hormone promoting elongation of stems and roots.
49. A river in north central Switzerland that runs northeast into the Rhine.
52. The cry made by sheep.
53. A doctor's degree in dental surgery.
54. A bachelor's degree in music.
55. Used in combination to denote the middle.

1. By bad luck.
2. An informal term for a father.
3. A logarithmic unit of sound intensity.
4. 300 to 3000 kilohertz.
5. A flat wing-shaped process or winglike part of an organism.
6. The capital and largest city of Yemen.
7. Jordan's port.
8. Fermented alcoholic beverage similar to but heavier than beer.
9. Having nine hinged bands of bony plates.
10. A sock with a separation for the big toe.
18. A pale rose-colored variety of the ruby spinel.
19. How long something has existed.
20. (astronomy) The angular distance of a celestial point measured westward along the celestial equator from the zenith crossing.
22. A unit of dry measure used in Egypt.
27. A radioactive element of the actinide series.
28. A sharp hand gesture (resembling a blow).
30. The blood group whose red cells carry both the A and B antigens.
31. Unknown god.
33. African tree having an exceedingly thick trunk and fruit that resembles a gourd and has an edible pulp called monkey bread.
36. System of measurement based on centimeters and grams and seconds.
38. One-hundredth of a right angle.
41. Of or relating to or characteristic of Thailand of its people.
42. (Babylonian) God of storms and wind.
44. An association of countries in the western hemisphere.
45. Edible tuber of any of several yams.
47. A defensive missile designed to shoot down incoming intercontinental ballistic missiles.
48. A soft silvery metallic element of the alkali earth group.
50. A rare polyvalent metallic element of the platinum group.
51. A radioactive transuranic element produced by bombarding plutonium with neutrons.