This phrase is very rough. It is a masculine way to say something is obvious. It shows you are annoyed with the listener.
Noun + だろがPrimary
な-Adjective + だろが
い-Adjective + だろが
Verb [dictionary form] + だろが
Verb [た-form] + だろが
This phrase is very rough. It is a masculine way to say something is obvious. It shows you are annoyed with the listener.
もう金は返しただろが！しつこいぞ！
I already paid you back, didn't I?! You're being persistent!
当たり前だろが！やるって決めたら最後までやれ！
Of course it is! If you decide to do something, see it through to the end!
そんなこと、俺が知ってるわけないだろが！
There's no way I'd know that, is there?!
何度も説明しただろが、まだ分からないのか？
I've explained it over and over, don't you still get it?
この状況で冷静でいられるなんて、頭おかしいだろが！
Being able to stay calm in this situation... you must be out of your mind!
This is different from 'darou' (probably). 'Darou' just guesses something. This is also different from 'ja nai ka'. 'Ja nai ka' can show surprise. It can also gently correct someone. But 'daro ga' is always angry. It always challenges someone.
Don't use this when you talk to women. Don't use this at work. Men use this to sound tough. It can start a fight.
Use this when you are angry. You think something is very clear. But the other person does not understand. You use it to say, "Isn't it obvious?"
Less formal alternatives(1)
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