반말

informal speech

Explanation

〔半말〕

1. informal speech
An informal speech used when two people are very close or their relationship does not clearly define who is the senior.

2. informal speech
A speech used to talk down to a younger or inferior person.

Examples
반말을 쓰다
반말을 하다
그 둘은 어느새 친해졌는지 반말로 얘기하고 있었다

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