고

-go

Explanation

1. -go
(informal addressee-lowering) A sentence-final ending usually used when answering, omitting the question that should follow and finishing the sentence.

2. -go
(informal addressee-lowering) A sentence-final ending used when ordering gently, as if giving a feeling of having omitted another ordering phrase that should follow.

Examples
그래, 그동안 별일은 없었고?
그래서 오늘 저녁에도 약속이 있고?
그렇게 호들갑을 떨더니 하던 일은 잘됐고?

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