Korean Double Final Consonants: Pronunciation Rules

Just as two people cannot sit in a single-person chair at once, the final consonant slot (batchim) in Korean can only sound out one consonant at a time. While two consonants are written side by side, the front consonant is voiced by default.

For example, '값' (gap, price) keeps the front 'ㅂ' to sound like [갑]. '앉다' (anta, to sit) keeps 'ㄴ' to sound like [안따], and '외곬' (oegol, single path) keeps 'ㄹ' to sound like [외골]. Most double consonants let the front letter speak.

However, every rule has exceptions. Three combinations—'ㄺ', 'ㄻ', and 'ㄿ'—voice the back consonant instead. That is why '닭' (dak, chicken) is pronounced [닥], '삶' (sam, life) is [삼], and '읊다' (euptta, to recite) is [읍따]. This back-consonant priority is why '닭' is never read as '달' and '삶' is never '살'.

Even with basic rules, 'ㄼ' and 'ㄺ' have tricky exceptions. Normally, 'ㄼ' follows the default rule and sounds like [ㄹ]: '여덟' (yeodeol, eight) is [여덜], and '넓다' (neoltta, wide) is [널따].

However, the verb stem '밟-' (step on) is an exception voicing the back 'ㅂ' before consonants, sounding like [밥]. Thus, '밟다' is [밥따] and '밟고' is [밥꼬]. Meanwhile, '넓다' stays as [ㄹ] in typical conjugations (넓고 [널꼬], 넓게 [널께]), but switches to [넙] in compound words like 넓죽하다 [넙쭈카다], 넓둥글다 [넙뚱글다], and 넓적하다 [넙쩌카다].

Conversely, 'ㄺ' normally voices the back [ㄱ]—making '흙' (heuk, soil) [흑] and '읽다' (ikta, to read) [익따]. But in verb and adjective stems ending in 'ㄺ', it switches to the front 'ㄹ' right before a 'ㄱ'. That is why '맑다' is [막따], but becomes '맑고 [말꼬]' and '맑게 [말께]'. This switch never applies to nouns like '닭과 [닥꽈]' or '흙과 [흑꽈]'.

When a double consonant meets a particle or ending starting with a vowel (like '이', '을', '은', or '아'), the rule changes completely. An empty seat opens right next door, so neither consonant needs to be dropped.

Here, the front consonant stays put while the back consonant moves into the next syllable, allowing both to be voiced. This is called liaison (yeon-eum). In 'ㄶ' and 'ㅀ', however, 'ㅎ' falls silent before a vowel, as in '않아 [아나]' and '싫어 [시러]'.

For example, '닭이' is read as [달기], not [다기], and '값이' becomes [갑씨], where 'ㅅ' hardens into a tensed [ㅆ] (as in '넋이 [넉씨]'). '앉아' becomes [안자], and '넓은' becomes [널븐]. The hidden second consonant slides over to fill the open spot. If a separate meaningful word follows (such as '닭 앞 [다갑]' or '값어치 [가버치]'), different rules apply.