1. vain - humble
2. careless - conscientious
3. narrow-minded/closed-minded - open-minded
4. insincere - sincere/honest
5. eccentric - conventional
6. tense, hurried - easy-going
7. maladjusted - well-balanced
8. stubborn - docile
9. unassertive - assertive
10. gloomy, grim, depressing - cheerful
11. insecure - self-confident
12. ambitious - unambitious
13. disloyal - loyal
14. foolish - wise
15. uncomposed/discomposed, stormy - calm
16. generous/unacquisitive - possessive
17. unreserved - reserved
18. immature - mature
19. impulsive - premeditated
20. bad-tempered - good-natured
21. arrogant - humble
22. pessimistic - optimistic
23. humorless - funny
24. conscientious - careless