(으)니

Description

Adjective/Verb + (으)니 : Because, since. If you're looking for the interrogative ending A/V + 니 go here.

1. = A/V + (으)니까 / A/V + (으)니까 is used more often in spoken form.
2. another function of this ending is to simply denote a connection between a fact presented in the preceding clause and the contents of fallowing clause.

Conjugation Rule
	Pattern	Case	Example
Rule 1:	A/V + 니	If there is no 받침 or if the adjective/verb stem has ㄹ as a 받침	가다 → 가니
Rule 2:	A/V + 으니	If there is a 받침 at the end of the adjective/verb stem	있다 → 있으니

Korean	English	Notes
담배를 피우니 기분이 좋아졌어요. (＝담배를 피우니까 기분이 좋아졌어요.)	I feel better because I smoked.	Polite informal form
버스는 복잡하니 택시를 타자. (＝버스는 복잡하니까 택시를 타자.)	Let's take a cab because the bus is crowded.	Low form
시간이 없으니 빨리 먹자. (＝시간이 없으니까 빨리 먹자.)	Let's eat quickly because we don't have enough time.	Low form
오늘은 날씨가 추우니 따뜻한 옷을 입으세요. (＝오늘은 날씨가 추우니까 따뜻한 옷을 입으세요.)	It's cold today, so put on some warm clothes.	Polite informal form
내가 잘못 했으니 내가 사과할게. (＝내가 잘못했으니까 내가 사과할게.)	It's my mistake, so I'll apologize.	Low form
철수가 아직도 안 들어오니 웬일일까요?	Since Chul Su is not home yet, what do you think happened?	Polite informal form
돈이 다 떨어졌으니 어떻게 하지?	I'm all out of money, so how will I live on?	Low form
차가 이렇게 밀리니 어떻게 하지요?	Since we are in a traffic jam. What should we do?	Polite informal form
벌써 10시인데 아직도 안 일어나니 웬일일까?	It's already 10 O'clock and he still hasn't gotten up. What do you suppose is the matter?	Low form
이 역은 타는 곳과 전동차 틈새가 넓어 발이 빠질 수 있으니 내릴때 조심하시기 바랍니다		Formal declarative This sentence is an actual announcement from the subway.