しか無い

Meaning

1. expadj-i
   having no choice but to ...; all one can do is ...; there's nothing to do except ...
2. expadj-i
   having nothing but ...; there is only ...; having only ...; having no more than ...

Example sentences

• 好きになった人のことをもっとよく知りたくなったら，監禁して解剖してみるしか無いんですよ。

  If you want to know a person you like better, you have to confine them and dissect them.