I'm pretty sure that there are parallels everywhere around the world. The Korean equivalent is 토박이말 Tobagimal (lit. native speak) [1]. [1] Also called 순 우리말 So

I'm pretty sure that there are parallels everywhere around the world. The Korean equivalent is 토박이말 Tobagimal (lit. native speak) [1]. [1] Also called 순 우리말 Soon woorimal (lit. only our speak) which is ironically not 순 우리말 itself because of a Sino-Korean morpheme "순" (純).