V+로군(요)/로구나/로구먼/로고

New information, strong reaction

Express surprise after learning something new. Only used with '이다' and '아니다' (sometimes in combination with '-으시'), and is stronger than 군(요)/구나/구먼 in these special cases. 로고 is an archaic form of the other three.

• 그 남자 말이로군요.

  Ah, you're talking about that man. (That's who you're talking about)
• 그래서 기분이 안 좋은 거로구나.

  I see -- so that's why you're not in a good mood.
• 그건 그냥 마음이 변했기 때문... 아니, 그게 아니로군요.

  That's simply because she changed her mind... no, wait, that's not it.
• 길을 잘 모르는 걸 보니 이번이 초행길이시로구먼.

  Seeing as you don't know the way, this must be your first time here.
• 역겨운 아해들이로고! 옛날과 달라진 바가 하나도 없다!

  You disgusting brats! Nothing has changed since the old days!