끼리

among themselves, with one another, only among/with members of the same group

preposition Uncommon #7,345
among themselves, with one another, only among/with members of the same group Follows a noun or pronoun to show that the people or things in that group are together or are interacting with one another; 만 can add “only.”
KO: 친구끼리 영화를 봤어요.
EN: The friends watched a movie together.

아들 끼리 절친

Our sons are best friends.

— No Other Choice (2025)

우리 선수 끼리 이러지 맙시다

Let's not treat our fellow players this way.

— 무간도 (2002)

우리 식구들 끼리만 찍는 거 야

We're taking this picture with just the family.

— Oasis (2002)

흑인 끼리?

Black people?

— 똑바로 살아라 (1989)

우리 끼리 음식 해서 남자 끼리 먹자

Let’s cook something ourselves and have a guys-only meal.

— 400번의 구타 (1959)

여자들 끼리?

Just the women?

— 무방비 도시 (1945)

너희 끼리 해

You guys do it yourselves.

— 해피 투게더 (1997)

서로 싫어하는 녀석 끼리 말야!

I'm talking about guys who hate each other!

— 목소리의 형태 (2016)