Напишите антонимы к словам на usual known important invited pleasant like natural learned done made heard necessary popular

1.unusual
2.unknown
3.unimportant
4.uninvited
5.unpleasant
6.unattractive
7.artificial
8.idle
9.-
10.broken
11.-
12.unimportant
13.modest, unpopular.
Ломаю голову, никак не могу придумать к 9 и 11.