1. Word List: un = not, none

2. messy; not neat; not organized

3. untidy

4. clear; cannot be understood the wrong way; not able to be confused or misunderstood

5. unmistakable

6. not within thought; not awake

7. unconscious

8. not deserving; not having any value

9. unworthy

10. not required

11. unnecessary

12. rare; not the usual; remarkable

13. uncommon

14. not smart

15. unwise

16. not yet at the point of making a decision

17. undecided

18. not what someone thought would happen; not predicted

19. unexpected

20. not sure

21. uncertain