1. Young
2. Happy
3. Fast
4. Light
5. Big
6. Hot
7. Up
8. Out
9. Old
10. Sad
11. Slow
12. Heavy
13. Small
14. Cold
15. Down
16. In
17. Weak
18. Empty
19. Dirty
20. Quiet
21. Short
22. Bright
23. Thin
24. Few
25. Hard
26. Straight
27. Rough
28. Deep
29. Near
30. Early
31. Open
32. Lose
33. Win
34. Buy
35. Sell
36. Give
37. Take
38. Ask
39. Answer
40. Begin
41. End
42. Arrive
43. Leave
44. Above
45. Below
46. Before
47. After
48. Inside
49. Outside
50. Alive
51. Dead
52. Clean
53. Loud
54. Long
55. Dark
56. Fat
57. Many
58. Soft
59. Curved
60. Smooth
61. Shallow
62. Far
63. Late
64. Close
65. Strong
66. Full
Parent Tip: Review the logic above to help your child master the concept of 4th grade crossword puzzles.