1.ask - answer
2. forget - remember
3. after - before
4. none - all
5. buy - sell
6. down - up
7. open - close
8. late - early
9. neither - both
10. sleep - wake
11. far - near
12. come - go
13. borrow - lend
14. hate - like / love
15. cry - laugh
16. back - front
17. best - worst
18. better - worse
19. busy - free
20. bad - good
21. empty - full
22. easy - hard / difficult
23. different - same
24. closed - open
25. cheap - dear / expensive
26. comfortable - uncomfortable
27. wrong - right
28. left - right
29. safe - dangerous
30. rich - poor
31. hot - cold
32. cool - warm
33. dry - wet
34. a.m. - p.m.
35. thin - fat / thick
36. east - west
37. slow - fast
38. north - south
39. above - below
40. noisy - quiet
41. strong - weak
42. heavy - light
43. clean - dirty
44. high - low
45. ill - well
46. possible - impossible
47. big - small
48. pull - push
49. here - there
50. clever - foolish
51. dark - bright / light
52. young - old
53. new - old
54. tall - short
55. upstairs - downstairs
56. wide - narrow
57. with - without
58. plus - minus
59. hungry - full
60. asleep - awake