Meanings1because; since; by reason ofFor the reason that.Examples from Lessons (3)왜냐하면 피곤해요.Because I am tired.Read the Lesson 왜냐하면 오래된 건물이 참 예쁘거든요.That's because the old buildings are really pretty.Read the Lesson 저는 항상 왜냐하면이나 그래서만 쓰게 돼요.I always end up just using because or so.Read the Lesson Grammar in These Examples-아/어Level 1Informal ending-ㄴ/은Level 1Adjective noun modifier-요FoundationsPoliteness marker-나 (선택)Level 3Or, about