Some more GRE words.

16. Conspicuous - completely obvious.
17. Preclude - prevent from happening.
18. Germane - relevant.
19. Glut - excessive supply.
20. frivolous - not serious in attitude/content/behavior
21. audacious - willing to be bold in social situations.
22. Chortle - to chuckle in a muffled, breathy way.
23. Gall - trait of being rude.
24. Vociferous - conspicuously and offensively loud.
25. mawkish - overly sentimental to the point that it is disgusting.
26. aesthete - someone who appreciates beauty of art and nature.
27. concede - to accept defeat, surrender.
28. Torpor - inactivity resulting from lethargy.
29. Prescience - Power to foresee the future.
30. superfluous - add no value, serving no useful purpose.