しめた

interjection

I've got it!; bingo!; that's it!

Exclamation of satisfaction when something goes as hoped or a plan succeeds. Casual and often used in self-congratulation.

• しめた！これで勝かてるぞ。

  I've got it! Now I can win.

• しめた、思おもった通とおりだ。

  Bingo! Just as I thought.