Every weak we analyze search logs to find out what are the popular words people are searching. We need to automate this process but somehow it is slipping in priority. I am told that dictionary.com and m-w.com also do the same but never publishes the list. The reason is simple; It is easier to optimize the site for few words than whole dictionary.
We do not mind publishing the list. Here is our top 30
1. agnostic
2. cynical
3. apathy
4. esoteric
5. dichotomy
6. cathartic
7. gregarious
8. ominous
9. amorous
10. cantankerous
11. insidious
12. obsequious
13. pithy
14. vapid
15. animosity
16. capricious
17. mundane
18. pensive
19. ameliorate
20. amenable
21. commensurate
22. copious
23. morose
24. pompous
25. sardonic
26. epiphany
27. poignant
28. indignant
29. allusion
30. ubiquitous
We have (indeed) filtered some bad words!