ㄹ 탈락 : ㄹ drop

You already know, vowel endings which start with -(으) or -(스) take place after a verb/adjective which ends with a final consonant. For example,

받+(스)ㅂ니다 -> 받습니다

읽+(으)러 -> 읽으러

닦+(으)면 -> 닦으면

However, when (으) or (스) is followed by ㄹfinal consonant, (으) or (스) drops.  For example,

1) 살+(으)러 -> 살러

2) 멀+(으)면 -> 멀면

*3) 울+(스)ㅂ니다 -> 웁니다

*4) 울+(으)니까 -> 우니까

*5) 울+(으)셨어요-> 우셨어요

*6) 멀+(으)ㄴ -> 먼

*7) 살+는 -> 사는

You can see that there is no (으) in 1) and 2).  If you look closely, there are more changes in 3)~7).  After (으) or (스) drops, if there is ㄴ / ㅂ / ㅅ, ㄹfinal consonant drops.  The table below will help you understand the process.

vowel endings start with(으), (스)	(으), (스) drop	ㄹ drops	Result
울+(스)ㅂ니다	울+ㅂ니다	우+ㅂ니다	웁니다
살+(으)십니다	살+십니다	사+십니다	사십니다
멀+(으)니까	멀+니까	머+니까	머니까
달+(으)ㄴ	달+ㄴ	다+ㄴ	단
길+(으)ㄹ수록	길+ㄹ수록	길+ㄹ수록	길수록 (ㄹ merged)
밀+(으)ㄹ 거예요	밀+ㄹ 거예요	밀+ㄹ 거예요	밀 거예요 (ㄹ merged)
살+는	–	사+는	사는

Vocabulary>>

울다 to cry

살다 to live

멀다 far

달다 sweet

길다 long

밀다 to push

 

If you have any questions, please reply to this post.