dagnagit - a swear word you say when you're upset but still pushing thr

a swear word you say when you're upset but still pushing through

Dagnagit! I'm gonna finish this project even if it takes me all day.

Dagnagit! I lost my keys and I'm still trying to get in the house.

Dagnagit! I got a bad grade and I'm still going to study harder.