It is a combination of two words:
* 모든 (modeun) - all, every
* 것 (geot) - thing, object
Therefore, "모든 것 (modeungeot)" literally translates to "all things". It can be used in various contexts, such as:
* 모든 것을 다 잃었어요. (modeungeot eul da ireoseoyo.) - I lost everything.
* 모든 사람이 그걸 좋아해요. (modeun saram i geugeol joahaeyo.) - Everyone likes it.
* 모든 것을 알아야 돼요. (modeungeot eul araeya dwaeyo.) - You need to know everything.
It's a very common and versatile word in Korean, used to express the totality of something.