Yap.Town

라곤

(emphasizes that there is no more than, or none of, something)

preposition Rare #28,182
(emphasizes that there is no more than, or none of, something) Usually follows a noun, often in expressions like “nothing but” or “not even a trace of.”
KO: 이 방에는 책상 하나라곤 없어요.
EN: There isn’t even a single desk in this room.

예의 라곤 없는 말들 말 입니다.

I mean, the kind of things that show no manners whatsoever.