that's it

phrase4

1. •
   That's all (there is nothing more to the issue).

   • So, that's it? I thought there would be some more.
   • I'm not going, and that's it.
2. •
   Yes!, exactly!, bingo!
3. •
   Eureka! (indicating a realization or discovery of a solution)
4. •
   I have had it (an exasperated refusal to tolerate the situation further).