Friendly - unfriendly, peaceful - agressive, modest - arrogant, creative - unimaginative, ambitious - unambitious, negative - positive, serious - funny, easy-going - out going, impatient - patient.
2
1 modest
2 helpful
3 generous
4 ambitious
5 shy
6 negative
7 outgoing
8 easy-going
9 impatient
10 creative
11 serious