shimatta

Medium-strength Japanese curse word roughly translating to "shit". Not used to describe yourself or others, but solely as an exclamation. Example:

Dragoon: Shimatta! Mahou chibi ohimesama wa kowai!

English translation: Shit! The magical little princess is scary!

This one is offensive, but not wildly so. Still, don't use it except with friends or people who are probably just as rude as you.

Thanks for the correction, Starrynight.

"Shimatta" does not directly translate to "shit". If you want to say that, use "kuso" instead.

Shimatta is more of a "dang" or "oops" kind of word. It even shows up in a particular verb conjuguation. So you can use it fairly safely in mixed company, although ideally you won't have to use it at all.