2.4

1. austere
2. avid
3. capricious
4. competent
5. diffident
6. diminutive
7. formidable
8. inexorable
9. inscrutable
10. inveterate
11. lugubrious
12. melancholy
13. meticulous
14. munificent
15. opportune
16. plebeian
17. precipitous
18. precocious
19. pugnacious
20. querulous