겹받침 - Double Final Consonants

Double Final Consonants or we can call double batchim are batchim made of two consonants.

In total, there are 11 double batchim: ㅄ, ㄳ, ㄺ, ㄼ, ㄽ, ㄿ, ㄵ, ㄶ, ㄻ, ㄾ, ㅀ. 

These double final consonants have different rule when apply to noun or verb and adjective.

1- Rule for Noun

There are 5 Double Final Consonants for Noun: ㅄ, ㄳ, ㄺ, ㄼ, ㄽ.

When standing alone or followed by a consonant, it is pronounced as follow:

• ㅄ => [ㅂ] 예: 값 [갑]
• ㄳ => [ㄱ] 예: 몫 [목]
• ㄺ => [ㄱ] 예: 닭 [닥]
• ㄼ => [ㄹ] 예: 여덟 [여덜]
• ㄽ => [ㄹ] 예: 외곬 [외골]

When followed by a vowel, it is read follow the prolonged sound(연음) rule.

2- Rule for Verb and Adjective

There are 9 Double Final Consonants for Noun: ㅄ, ㄿ, ㄺ, ㄵ, ㄶ, ㄻ, ㄼ, ㄾ, ㅀ.

When standing alone or followed by a consonant, it is pronounced as follow:

• ㅄ => [ㅂ] 예: 없다 [업따]
• ㄿ => [ㅂ] 예: 읊다 [읍따]
• ㄺ => [ㄱ] 예: 읽다 [익따]
• ㄵ => [ㄴ] 예: 앉다 [안따]
• ㄶ => [ㄴ] 예: 않다 [안타]
• ㄻ => [ㅁ] 예: 닮다 [담따]
• ㄼ => [ㄹ] 예: 넓다 [널따]
• ㄾ => [ㄹ] 예: 핥다 [할따]
• ㅀ => [ㄹ] 예: 잃다 [일타]

When followed by a vowel, it is pronounced follow the prolonged sound(연음) rule.

Reference: 외국인을 위한 한국어 발음 47-25과-서울대학교 언어교육원