않으니

since ... not, because ... not

→ 않다
않 not (forms a negation after -지) + 으니 Because/since
auxiliary Rare #29,093
since ... not, because ... not Follows a verb or adjective in the pattern -지 않으니 to give a reason.
KO: 오늘은 비가 오지 않으니 산책하자.
EN: Since it isn't raining today, let's go for a walk.
Conjugation of 않다

이 부분은 중요치 않으니 여기부터 보자

This part isn't important, so let's start here.

— 솔라리스 (1972)

물지 않으니 어서 찍어요

It won't bite, so go ahead and take a picture.

— 세 얼간이 (2009)