A2 Verb Conjugation 17 min read Easy

Korean ㄹ Irregular Verbs: The Disappearing ㄹ Pattern

When a ㄹ-stem verb meets the letters ㄴ, ㅂ, or ㅅ, the ㄹ simply vanishes.

Grammar Rule in 30 Seconds

When a verb stem ends in ㄹ and meets ㄴ, ㅂ, or ㅅ, the ㄹ disappears.

  • If the stem ends in ㄹ, drop it before suffixes starting with ㄴ, ㅂ, or ㅅ.
  • Example: 살다 (to live) + ㅂ니다 becomes 삽니다 (not 살ㅂ니다).
  • If the suffix starts with a vowel (like -아요), the ㄹ stays: 살아요.
Stem(ㄹ) + [ㄴ/ㅂ/ㅅ] ➡️ Stem(drop ㄹ) + [ㄴ/ㅂ/ㅅ]

Overview

The Korean irregular verb pattern, often termed 'The Disappearing ㄹ,' is a fundamental concept for A2-level learners seeking to sound more natural in their spoken and written Korean. This rule governs how verbs and adjectives whose stems end in the consonant (like 살다 [salda], to live, or 알다 [alda], to know) behave when conjugated with certain suffixes. Unlike regular verbs where the stem remains constant, irregulars undergo a crucial phonetic change: the final of the stem drops when it precedes an ending that begins with [n], [b/p], or [s].

Mastering this irregularity is not merely about memorizing exceptions; it is about understanding a core phonetic principle that that simplifies pronunciation and integrates seamlessly into the broader Korean grammatical system.

Conjugation Table

Verb/Adjective Dictionary Form (Stem) Meaning Ending Type Ending (Starts with) Regular Expectation (Incorrect) Correct Conjugation Romanization Translation
:--------------- :----------------------- :-------- :------------ :--------------------- :--------------------------------- :-------------------- :------------- :------------
살다 살- to live Formal Statement -ㅂ니다 () 살습니다 삽니다 samnida I live
알다 알- to know Polite Request -(으)세요 () 알으세요 아세요 a-se-yo Please know / Do you know?
만들다 만들- to make Honorific Request -세요 () 만들세요 만드세요 man-deu-se-yo Please make
팔다 팔- to sell Because (reason) -(으)니까 () 팔으니까 파니까 pa-ni-kka Because I sell
놀다 놀- to play Exclamatory -네요 () 놀네요 노네요 no-ne-yo Oh, you're playing!
길다 길- to be long Adjective Modifier -(으)ㄴ () 길은 gin Long (e.g., long hair)
멀다 멀- to be far If/When -(으)면 () 멀으면 멀면 meol-myeon If it's far
달다 달- to be sweet Formal Statement -ㅂ니다 () 답니다 dam-nida It is sweet
고르다 고르- to choose Formal Statement -ㅂ니다 () 고릅니다 고릅니다 go-reum-nida I choose

How This Grammar Works

The irregular pattern is rooted in a fundamental phonetic principle: ease of pronunciation. Korean phonology naturally tends to avoid sequences of sounds that are difficult or effortful to articulate in rapid speech. The consonant (a liquid consonant, often described as an alveolar flap or lateral approximant) clashes with the following consonants (alveolar nasal), (bilabial stop), and (alveolar fricative).
When is followed immediately by one of these, native speakers tend to drop the to create a smoother, more fluent transition between sounds. This isn't a grammatical rule arbitrarily imposed; it's a reflection of how the language naturally evolved to optimize speech flow.
Consider the articulatory positions: involves the tongue tip touching the alveolar ridge. For , the tongue tip is also at the alveolar ridge, creating an almost identical, but nasalized, contact. For , the lips close entirely, creating a momentary stop.
For , the tongue tip approaches the alveolar ridge, creating friction. Following an with , , or requires either a swift, precise tongue movement that can be phonetically awkward or a complete interruption of airflow that breaks the natural rhythm. Dropping the resolves this friction, allowing for a seamless shift directly from the preceding vowel to the initial consonant of the suffix.
The most significant grammatical consequence of this phonetic drop is that the stem of an irregular verb or adjective, after losing its , effectively behaves as if it ends in a vowel. This has profound implications for how subsequent grammatical endings are attached, particularly those that have two forms depending on whether they follow a vowel or a consonant. For example, endings like -(으)세요 (polite request), -(으)면 (if/when), -(으)니까 (because), and -(으)ㄹ (future modifier) all feature an vowel that is typically inserted after consonant-ending stems.
However, when the drops from an irregular stem, the stem is treated as vowel-ending, and the component of these suffixes is also dropped. For instance, 살다 (to live) + -(으)세요 becomes 사세요 [sa-se-yo], not 살으세요 or 사으세요. The drops, making a vowel-ending stem, thus directly attaching -세요.
This principle of the drop and subsequent vowel-ending behavior is consistent across all irregular verbs and adjectives, making it a predictable pattern once understood. It ensures that the language maintains its natural rhythm and phonetic harmony, which are crucial aspects of fluent Korean pronunciation.

Formation Pattern

1
Applying the irregular rule systematically involves a straightforward, three-step process. This method ensures accurate conjugation for any verb or adjective whose stem ends in . Remember that this applies universally to all verbs and adjectives ending in in their dictionary form.
2
Identify the Stem and Its Final Consonant: Begin by taking the dictionary form of the verb or adjective (e.g., 만들다 [man-deul-da], to make; 길다 [gil-da], to be long) and remove the -다 [da] ending. The remaining part is the stem. For irregulars, this stem will always end with the consonant (e.g., 만들-, 길-).
3
Examine the Grammatical Ending: Next, look at the grammatical suffix you intend to attach. Your critical task here is to identify the initial consonant of that suffix. The drop is triggered exclusively when the ending begins with one of these three specific consonants: [n], [b/p], or [s]. For example, suffixes like -네요 (), -ㅂ니다 (), -(으)세요 (), -(으)니까 (), and -(으)ㄴ () are all triggers.
4
Drop and Attach the Ending: If the ending begins with , , or , the final of the verb/adjective stem must drop entirely. Once is removed, the modified stem is now treated as if it ends in a vowel. You then attach the grammatical ending as you would to any vowel-ending stem. Crucially, if the ending itself has an (으) variant (like -(으)세요, -(으)면, -(으)니까), the (으) will also be omitted because the stem is now considered vowel-ending. For instance, to conjugate 살다 with -ㅂ니다:
5
살- (stem) + -ㅂ니다 (starts with )
6
Drop : 사-
7
Attach -ㅂ니다 (as if vowel-ending): 삽니다 [sam-nida] (I live).
8
Similarly, for 알다 (to know) with -(으)세요:
9
알- (stem) + -(으)세요 (starts with )
10
Drop : 아-
11
Attach -세요 (omitting ): 아세요 [a-se-yo] (Please know / Do you know?).
12
Following these steps ensures that your conjugations are both grammatically correct and phonetically natural, aligning with native Korean speech patterns. This consistent application is key to mastering irregular verbs.

When To Use It

The irregular rule is not an obscure exception; it is an omnipresent feature of everyday Korean. You will encounter and need to apply it daily across various grammatical contexts and politeness levels, especially with some of the most common verbs and adjectives in the language. Recognizing these situations and applying the rule correctly immediately elevates your Korean from textbook to conversational fluency.
Firstly, you'll use this rule in declarative sentences when making statements about actions or states. For instance, when talking about where you reside, 살다 (to live) becomes 삽니다 [sam-nida] in the formal-polite 합니다체 and 사세요 [sa-se-yo] in the informal-polite 해체 when combined with -시- for honorifics. You might say 저는 서울에 삽니다 [jeo-neun seoul-e sam-nida] (I live in Seoul) in a formal setting.
When talking about creation, 만들다 (to make) conjugates to 만듭니다 [man-deup-nida] in formal speech. For example, 빵을 만듭니다 [ppang-eul man-deup-nida] (I make bread).
Secondly, this rule is vital for modifying nouns. Adjective forms using -(으)ㄴ (for past tense or descriptive adjectives) will trigger the drop if the adjective stem ends in and the suffix begins with . For example, 길다 (to be long) combined with the adjectival suffix -(으)ㄴ becomes [gin] (long), as seen in 긴 머리 [gin meo-ri] (long hair).
If you were describing a difficult task, 어렵다 (to be difficult) combined with -(으)ㄴ would become 어려운 [eo-ryeo-un], but an irregular like 멀다 (to be far) would become [meon] (far), as in 먼 길 [meon gil] (a long/far road).
Furthermore, the drop is crucial in expressions of reason, condition, or intention. Suffixes like -(으)니까 (because) are frequently used and directly trigger the drop. For example, 파니까 돈이 있어요 [pa-ni-kka don-i is-seo-yo] (Because I sell, I have money).
Similarly, 만드니까 맛있어요 [man-deu-ni-kka ma-si-sseo-yo] (Because I make it, it's delicious).
Finally, common interjections and exclamatory forms, particularly those using -네요 [ne-yo], frequently showcase the irregular pattern. 놀다 (to play/hang out) becomes 노네요! [no-ne-yo!] (Oh, you're playing/hanging out!). The consistent application of this rule across these diverse grammatical functions makes it indispensable for producing natural and correct Korean.

When Not To Use It

Understanding when the irregular rule does not apply is just as critical as knowing when it does. Misapplying the rule can lead to unnatural or incorrect Korean. The key is to remember the specific trigger consonants: , , and .
If the grammatical ending you are attaching does not begin with one of these three, the in the verb or adjective stem remains unchanged.
The most common scenario where the does not drop is when the ending begins with a vowel. Many fundamental endings in Korean start with [silent consonant, but the following vowel dictates the sound], which phonetically means they begin with a vowel sound. Examples include:
  • Polite-casual 아요/어요: 살다 (to live) + 어요 becomes 살아요 [sar-a-yo], not 사요. Similarly, 알다 (to know) + 아요 becomes 알아요 [ar-a-yo], not 아요.
  • Past tense 았/었: 살다 + 았어요 becomes 살았어요 [sar-a-sseo-yo], not 샀어요. 알다 (to know) + 았어요 becomes 알았어요 [ar-a-sseo-yo], not 았어요.
  • Future tense -(으)ㄹ 거예요: The in 살- remains, and the in the future ending attaches regularly, as in 살 거예요 [sal geo-yeo-yo] (I will live).
  • Connective ending -(으)면 (if/when): 알다 (to know) + -으면 becomes 알면 [al-myeon] (If you know). Since is not , , or , the stays. Similarly, 만들다 (to make) + -면 becomes 만들면 [man-deul-myeon] (If you make).
Secondly, the does not drop when the ending begins with other consonants that are not , , or . Common examples include [g/k], [d/t], [j/ch], [m], [h], etc. For instance:
  • Connective ending -고 (and, then): 살다 (to live) + -고 becomes 살고 [sal-go] (living and...). 만들다 (to make) + -고 becomes 만들고 [man-deul-go] (making and...). The remains intact.
  • Connective ending -지만 (but): 알다 (to know) + -지만 becomes 알지만 [al-ji-man] (although you know...). The remains.
It is also crucial not to confuse irregular verbs with irregular verbs, such as 고르다 (to choose) or 모르다 (to not know). In irregulars, the syllable itself undergoes a change (e.g., 고르다 + 아요 becomes 골라요), which is a distinct pattern involving the changing to ㄹ라 or ㄹ러. The in irregulars is not a final consonant of the stem in the same way it is in irregulars.
Always verify the stem structure.

Common Mistakes

Learners frequently stumble with irregular verbs, not due to the complexity of the rule itself, but often from over-generalization, incomplete understanding, or simple oversight. Being aware of these common pitfalls can significantly accelerate your mastery.
  1. 1Forgetting to Drop the : This is by far the most prevalent error. Many learners instinctively apply regular conjugation rules, leading to phonetically awkward and grammatically incorrect forms. For example, forming 살다 (to live) + -ㅂ니다 as 살습니다 [sal-seup-nida] instead of the correct 삽니다 [sam-nida]. This incorrect form feels like a mouthful to native speakers, analogous to saying "I goes" in English—it communicates, but it sounds distinctly foreign. The final creates an almost impossible-to-pronounce consonant cluster with the following or . Similarly, 길다 (to be long) + -(으)ㄴ incorrectly becomes 길은 [gil-eun] instead of [gin]. Always check if the suffix starts with , , or and consciously remove the .
  1. 1Over-generalizing the Drop: Conversely, some learners, after realizing the significance of the drop, begin applying it indiscriminately, even when the triggering consonants (, , ) are not present. This leads to errors like conjugating 알다 (to know) + -고 as 아고 [a-go] instead of 알고 [al-go]. The consonant does not trigger the drop, so the must remain. Another example is 살다 (to live) + -아요 becoming 사요 [sa-yo] instead of 살아요 [sal-a-yo]. Remember: the only disappears before , , or . If the ending begins with a vowel (like in 아요/어요) or any other consonant, the stays.
  1. 1Incorrectly Applying (으) Endings: This error stems from misunderstanding that the dropped makes the stem vowel-ending. Learners might incorrectly try to use the (으) part of suffixes like -(으)세요 or -(으)니까 after an irregular stem. For example, 알다 (to know) + -(으)세요 becoming 알으세요 [al-eu-se-yo]. This is a double error: the should drop, and the should not be used. The correct form is 아세요 [a-se-yo]. After the drops, the stem (아-) is treated as vowel-ending, directly combining with -세요.
  1. 1Confusing Irregulars with Irregulars: Korean has another distinct irregular pattern involving (e.g., 모르다 [mo-reu-da], to not know; 부르다 [bu-reu-da], to call). While both involve sounds, their mechanisms are entirely different. irregulars involve the final consonant of the stem dropping. irregulars involve the entire syllable changing to ㄹ라 or ㄹ러 before 아요/어요 endings. For instance, 모르다 + 아요 becomes 몰라요 [mol-la-yo], not 모아요 or 모르아요. Do not apply the drop rule to irregulars; they have their own specific transformation.

Memory Trick

To consistently remember the three specific consonants that trigger the irregular drop (, , ), you can employ a mnemonic device. Imagine the as a shy or sensitive person who wants to avoid certain loud or intrusive personalities. The consonants , , and can be associated with:

- ㄴ (N): Noise or Nagging – The wants to avoid noise.

- ㅂ (B): Bossy – The is intimidated by bossy people.

- ㅅ (S): Shy or Sneaky – Perhaps is too shy to be near another 's' sound, or it perceives as sneaky, and thus hides.

So, the hides or disappears when it encounters Nagging, Bossy, or Sneaky sounds. Alternatively, a simpler phonetic grouping: tends to drop before alveolar (, ) and bilabial () sounds due to articulatory conflict. Visualizing the tongue movements might help reinforce this linguistic rationale.

Real Conversations

Understanding irregulars truly comes alive when you see them in authentic, everyday Korean exchanges. These examples demonstrate how naturally the rule is applied across various informal and formal contexts.

1. Casual Chat (Texting between friends):

- A: 오늘 일찍 퇴근하셨네요! [o-neul il-jjik toe-geun-ha-syeot-ne-yo!] (You left work early today!)

- B: 네, 너무 피곤해서 집에서 그냥 노네요. [ne, neo-mu pi-gon-hae-seo jib-e-seo geu-nyang no-ne-yo.] (Yes, I'm too tired so I'm just relaxing at home.)

- 놀다 (to play) + -네요 (exclamatory) becomes 노네요. The drops before .

2. Workplace Interaction (Formal-polite):

- A: 이 보고서는 언제까지 만들어야 할까요? [i bo-go-seo-neun eon-je-kka-ji man-deul-eo-ya hal-kka-yo?] (By when should I make this report?)

- B: 오늘 중으로 만듭시다! [o-neul jung-eu-ro man-deup-si-da!] (Let's make it by sometime today!)

- 만들다 (to make) + -ㅂ시다 (let's) becomes 만듭시다. The drops before , and the stem is treated as vowel-ending, combining with -ㅂ시다.

3. Social Media Comment:

- Photo caption: 우리 강아지랑 산책 나왔어요! [u-ri gang-a-ji-rang san-chaek na-wa-sseo-yo!] (Came out for a walk with my puppy!)

- Comment: 와, 강아지 털이 정말 기네요! [wa, gang-a-ji teol-i jeong-mal gi-ne-yo!] (Wow, your puppy's fur is really long!)

- 길다 (to be long) + -네요 (exclamatory) becomes 기네요. The drops before .

4. Everyday Question:

- A: 혹시 제 이름 아세요? [hok-si je ireum a-se-yo?] (By any chance, do you know my name?)

- B: 네, 압니다. [ne, am-nida.] (Yes, I know it.)

- 알다 (to know) + -(으)세요 becomes 아세요. 알다 + -ㅂ니다 becomes 압니다. Both demonstrate the drop.

These examples underscore how integrated the irregular pattern is into fluent Korean. Applying it correctly is not just about grammatical accuracy, but about achieving a natural rhythm and clarity in communication.

Contrast With Similar Patterns

Korean grammar features several irregular verb patterns, and it is crucial to distinguish the irregular from others that might seem superficially similar. Confusing these patterns can lead to incorrect conjugations and a lack of clarity.
  1. 1The 'Eu' Drop Pattern ( 탈락): This pattern applies to verbs and adjectives whose stems end in the vowel (e.g., 쓰다 [sseu-da], to write; 예쁘다 [ye-ppeu-da], to be pretty). When an ending starting with or is attached, the vowel drops. For example, 쓰다 + 어요 becomes 써요 [sseo-yo], and 예쁘다 + 어요 becomes 예뻐요 [ye-ppeo-yo]. While both irregulars and drop involve a sound disappearing for phonetic ease, the drop specifically concerns the final consonant before , , , whereas the drop involves the final vowel before 아/어.
  1. 1Irregular Verbs ( 불규칙): Verbs and adjectives ending in (e.g., 덥다 [deop-da], to be hot; 춥다 [chup-da], to be cold) are irregulars. When these stems are followed by an ending that starts with a vowel, the changes to or . For instance, 덥다 + 어요 becomes 더워요 [deo-wo-yo], and 춥다 + 어요 becomes 추워요 [chu-wo-yo]. This is a sound change ( to 우/오), not a sound drop like the irregular, and it occurs before vowels, not specific consonants. The phonetic reason is also ease of pronunciation, but the mechanism is distinct.
  1. 1Irregular Verbs ( 불규칙): A few verbs ending in (e.g., 듣다 [deut-da], to listen; 걷다 [geot-da], to walk) are irregulars. When followed by an ending that starts with a vowel, the changes to . For example, 듣다 + 어요 becomes 들어요 [deur-eo-yo]. Again, this is a consonant change ( to ) before a vowel, not a drop, and it applies to a different set of triggering contexts and stem-final consonants.
  1. 1Irregular Verbs ( 불규칙): As mentioned previously, verbs like 모르다 (to not know) and 부르다 (to call) fall into this category. When irregular stems are followed by 아요/어요, the syllable changes to ㄹ라 or ㄹ러 (e.g., 모르다 + 아요 becomes 몰라요; 부르다 + 어요 becomes 불러요). This involves a more complex syllable transformation, distinct from the simple consonant drop of irregular verbs. It's crucial not to confuse as a final consonant with as a final syllable.
The irregular pattern is unique in its specific trigger consonants (, , ) and its mechanism of consonant deletion, rather than change or vowel deletion. Keeping these distinctions clear will prevent common errors and solidify your understanding of Korean irregular verb conjugations.

Progressive Practice

1

Consistent practice is essential for internalizing the irregular pattern. Start with basic conjugations and gradually incorporate more complex sentence structures and contexts. Aim for both accuracy and speed in application.

2

Basic Conjugation Drill (Formal 합니다체): Take the following irregular verbs and conjugate them with -ㅂ니다.

- 살다 (to live) → 삽니다 [sam-nida]

- 만들다 (to make) → 만듭니다 [man-deum-nida]

- 팔다 (to sell) → 팝니다 [pam-nida]

- 알다 (to know) → 압니다 [am-nida]

3

Polite Request Practice (Honorific -(으)세요): Conjugate these verbs/adjectives into their polite request form.

- 알다 (to know) → 아세요 [a-se-yo]

- 만들다 (to make) → 만드세요 [man-deu-se-yo]

4

Reason/Adjectival Modifier (-(으)니까, -(으)ㄴ): Apply the correct forms in sentences.

- 팔다 (to sell) + -(으)니까 + 돈이 있어요 (have money) → 파니까 돈이 있어요. [pa-ni-kka don-i is-seo-yo.] (Because I sell, I have money.)

- 길다 (to be long) + -(으)ㄴ + 치마 (skirt) → 긴 치마 [gin chi-ma] (a long skirt).

5

Sentence Construction: Create short sentences using irregular verbs in different contexts.

- "I live in a small house." (살다, 작다 - to be small) → 저는 작은 집에 삽니다. [jeo-neun jag-eun jib-e sam-nida.]

- "Because it's far, let's take a taxi." (멀다, 타다 - to ride) → 머니까 택시를 탑시다. [meo-ni-kka taek-si-reul tap-si-da.]

- "Do you know the secret?" (알다, 비밀 - secret) → 비밀을 아세요? [bi-mir-eul a-se-yo?]

This progressive approach helps to solidify both the mechanical application of the rule and your intuitive understanding of its usage in natural Korean speech.

Quick FAQ

Here are quick answers to some frequently asked questions about the irregular pattern:
  • Q: Does this pattern apply to ALL verbs/adjectives whose stems end in ?
  • A: Yes, universally. If a stem ends in , and the following ending starts with , , or , the will always drop. There are no exceptions within this specific pattern.
  • Q: What about verbs that have ㄹㄹ in their stem, like 다르다 (to be different) or 모르다 (to not know)?
  • A: These are irregular verbs, which are a separate category. The in 다르다 or 모르다 is part of the syllable, not a standalone final consonant of the stem. Their conjugation rules are distinct (e.g., 다르다 + 아요달라요). Do not apply the drop rule to irregulars.
  • Q: Does the drop in the past tense or future tense?
  • A: Generally no, because the core past tense suffix 았/었 and the future -(으)ㄹ 거예요 (or ) begin with vowel sounds () or consonants not in the ㄴ, ㅂ, ㅅ group ( in ). For instance, 살다 + 았어요 = 살았어요 [sar-a-sseo-yo]; 살다 + 겠어요 = 살겠어요 [sal-ge-sseo-yo]. The only drops if the specific ending attached immediately after the stem starts with , , or .
  • Q: Why do I see 살다 as 사는 in phrases like 사는 곳 (the place where one lives)?
  • A: This is a perfect example of the drop! The adjectival modifying ending for verbs is -는 [neun]. Since -는 starts with , the in 살- drops, resulting in 사는 [sa-neun]. Thus, 사는 곳 correctly translates to "the place that one lives in" or "one's residence."
  • Q: Can irregulars be honorified?
  • A: Yes. The honorific infix -(으)시- [-(eu)si-] begins with , which is a trigger. So, 알다 (to know) + -(으)시- + 어요 becomes 아세요 [a-se-yo]. The drops from 알-, and the from -(으)시- is omitted because 아- is now vowel-ending.

ㄹ-Irregular Conjugation Table

Verb Stem Suffix (-ㅂ니다) Result
살다
ㅂ니다
삽니다
만들다
만들
ㅂ니다
만듭니다
놀다
ㅂ니다
놉니다
멀다
ㅂ니다
멉니다
팔다
ㅂ니다
팝니다
열다
ㅂ니다
엽니다

Meanings

The ㄹ-irregular rule describes a phonological change where the final liquid consonant 'ㄹ' is deleted when followed by specific consonants.

1

Formal Conjugation

Used in formal speech levels ending in -ㅂ니다.

“만들다 -> 만듭니다”

“팔다 -> 팝니다”

2

Adnominal/Modifier

Used when modifying nouns with -는.

“살다 -> 사는 사람”

“만들다 -> 만드는 요리”

3

Honorifics

Used when adding honorific suffixes starting with ㅅ.

“살다 -> 사십니다”

“만들다 -> 만드십니다”

Reference Table

Reference table for Korean ㄹ Irregular Verbs: The Disappearing ㄹ Pattern
Form Structure Example
Formal
Stem(drop ㄹ) + ㅂ니다
삽니다
Modifier
Stem(drop ㄹ) + 는
사는
Honorific
Stem(drop ㄹ) + 십니다
사십니다
Negative
Stem(drop ㄹ) + 지 않습니다
사지 않습니다
Question
Stem(drop ㄹ) + ㅂ니까?
삽니까?
Past
Stem(keep ㄹ) + 았/었습니다
살았습니다

Formality Spectrum

Formal
저는 서울에 삽니다.

저는 서울에 삽니다. (Self-introduction)

Neutral
저는 서울에 살아요.

저는 서울에 살아요. (Self-introduction)

Informal
나 서울에 살아.

나 서울에 살아. (Self-introduction)

Slang
서울 살아.

서울 살아. (Self-introduction)

The ㄹ-Deletion Rule

ㄹ-Irregular

Suffixes that trigger deletion

  • n
  • b
  • s

Suffixes that keep ㄹ

  • 아/어 vowel
  • g
  • j

Examples by Level

1

저는 서울에 삽니다.

I live in Seoul.

2

요리를 만듭니다.

I make food.

3

친구랑 놉니다.

I play with a friend.

4

길을 멉니다.

The road is far.

1

제가 만드는 음식이에요.

It is the food I make.

2

사시는 곳이 어디예요?

Where do you live?

3

만드시는 분이 누구예요?

Who is the person making it?

4

노시는 모습이 즐거워 보여요.

You look happy playing.

1

서울에 사시는 부모님께 전화했어요.

I called my parents who live in Seoul.

2

이것은 제가 직접 만든 것입니다.

This is something I made myself.

3

멀리 사시는 할머니를 뵈러 갑니다.

I am going to visit my grandmother who lives far away.

4

그분은 참 친절하십니다.

He is very kind.

1

선생님께서 만드신 계획은 완벽합니다.

The plan the teacher made is perfect.

2

오랫동안 사신 동네를 떠나기 아쉽습니다.

It is sad to leave the neighborhood where I lived for a long time.

3

그분은 이곳에 사시지 않습니다.

He does not live here.

4

직접 만드신 요리를 대접해 주셨습니다.

They treated me to food they made themselves.

1

그가 만든 논문은 학계의 주목을 받았습니다.

The thesis he wrote received attention from the academic community.

2

고향에 사시는 어르신들의 지혜를 배웁니다.

I learn the wisdom of the elders who live in my hometown.

3

그는 평생을 바쳐 이 예술품을 만드셨습니다.

He dedicated his life to making this artwork.

4

이곳에 사시는 분들은 모두 친절하십니다.

The people who live here are all kind.

1

그가 만드신 작품은 시대를 초월한 가치를 지닙니다.

The work he created possesses timeless value.

2

오랜 세월을 사신 분만이 아는 깊이가 있습니다.

There is a depth that only those who have lived a long time know.

3

그분은 이곳에 사시면서 많은 업적을 남기셨습니다.

While living here, he left behind many achievements.

4

직접 만드신 도자기는 그 자체로 예술입니다.

The pottery you made yourself is art in itself.

Easily Confused

Korean ㄹ Irregular Verbs: The Disappearing ㄹ Pattern vs ㄹ-Irregular vs Regular ㄹ

Learners often think all verbs ending in ㄹ are irregular.

Korean ㄹ Irregular Verbs: The Disappearing ㄹ Pattern vs ㄹ-Irregular vs ㄷ-Irregular

Both involve ㄹ, but ㄷ-irregular changes ㄷ to ㄹ.

Korean ㄹ Irregular Verbs: The Disappearing ㄹ Pattern vs ㄹ-Irregular vs ㅂ-Irregular

Both involve consonant changes.

Common Mistakes

살ㅂ니다

삽니다

Forgot to drop the ㄹ.

만들ㅂ니다

만듭니다

Forgot to drop the ㄹ.

놀ㅂ니다

놉니다

Forgot to drop the ㄹ.

팔ㅂ니다

팝니다

Forgot to drop the ㄹ.

사아요

살아요

Dropped the ㄹ before a vowel.

만드아요

만들어요

Dropped the ㄹ before a vowel.

노아요

놀아요

Dropped the ㄹ before a vowel.

만들는

만드는

Forgot to drop the ㄹ before ㄴ.

살는

사는

Forgot to drop the ㄹ before ㄴ.

멀는

Forgot to drop the ㄹ before ㄴ.

만들십니다

만드십니다

Forgot to drop the ㄹ before honorific ㅅ.

살십니다

사십니다

Forgot to drop the ㄹ before honorific ㅅ.

놀십니다

노십니다

Forgot to drop the ㄹ before honorific ㅅ.

Sentence Patterns

저는 ___에 삽니다.

제가 ___는 음식입니다.

선생님께서 ___십니다.

___는 것이 즐겁습니다.

Real World Usage

Self-introduction constant

저는 서울에 삽니다.

Social Media common

내가 만든 케이크!

Job Interview very common

저는 팀을 만듭니다.

Travel occasional

어디에 사세요?

Food Delivery common

직접 만듭니다.

Texting very common

놀자!

💡

Check the Suffix

Always look at the first letter of the suffix you are adding. If it's ㄴ, ㅂ, or ㅅ, drop the ㄹ!
⚠️

Don't Over-apply

Only drop the ㄹ if the suffix starts with those three letters. If it starts with a vowel, keep it!
🎯

Practice Aloud

Saying '살ㅂ니다' is hard. Saying '삽니다' is easy. Your mouth will naturally want to drop the ㄹ!
💬

Politeness Matters

Using the correct formal form shows respect to your listener.

Smart Tips

Always check the suffix first.

살ㅂ니다 삽니다

Remember the ㄹ-deletion.

만들는 만드는

Drop the ㄹ before ㅅ.

살십니다 사십니다

Use the honorific form correctly.

만들십니다 만드십니다

Pronunciation

sa-m-ni-da

ㄹ-Deletion

The ㄹ is silent before ㄴ, ㅂ, ㅅ. The preceding vowel is pronounced clearly.

Declarative

저는 삽니다. ↘

Falling intonation for statements.

Memorize It

Mnemonic

Remember the 'L-E-S-S' rule: When you see L (ㄹ) followed by N, B, or S, the L becomes LESS (it disappears).

Visual Association

Imagine a little 'ㄹ' character running away in fear whenever it sees a big 'ㄴ', 'ㅂ', or 'ㅅ' coming towards it.

Rhyme

If the stem ends in ㄹ, and you see ㄴ, ㅂ, or ㅅ, the ㄹ will vanish, that's the rule, you'll see it pass!

Story

Mr. ㄹ lived in a house. One day, three bullies named ㄴ, ㅂ, and ㅅ came to visit. Mr. ㄹ was so scared that he hid in the closet and disappeared every time they arrived. But when his friends like '아' or '어' came, he stayed out and played.

Word Web

살다만들다놀다팔다멀다열다

Challenge

Write 5 sentences using the formal -ㅂ니다 ending with different ㄹ-irregular verbs.

Cultural Notes

This rule is strictly followed in standard speech. It is considered a mark of a good speaker.

The deletion is very natural in the Seoul dialect.

In business settings, using the correct formal conjugation is essential for showing respect.

The rule originates from Middle Korean phonological shifts where liquid consonants were elided in specific environments.

Conversation Starters

어디에 사세요?

무슨 요리를 만드세요?

주말에 보통 어떻게 노세요?

어떤 음식을 만드시는 것을 좋아하세요?

Journal Prompts

Write about where you live.
Describe a dish you like to make.
Write about your favorite way to spend time.
Reflect on a skill you have developed.

Common Mistakes

Incorrect

Correct


Incorrect

Correct


Incorrect

Correct


Incorrect

Correct

Test Yourself

Conjugate '살다' in formal style.

저는 서울에 ___.

✓ Correct! ✗ Not quite. Correct answer: b
The ㄹ is dropped before ㅂ.
Choose the correct form. Multiple Choice

그것은 내가 ___ 음식이다.

✓ Correct! ✗ Not quite. Correct answer: b
The ㄹ is dropped before ㄴ.
Correct the mistake. Error Correction

Find and fix the mistake:

그는 한국에 살십니다.

✓ Correct! ✗ Not quite. Correct answer: b
The ㄹ is dropped before ㅅ.
Build a sentence. Sentence Building

만들다 + ㅂ니다

✓ Correct! ✗ Not quite. Correct answer: a
Correct conjugation.
Match the verb to its formal form. Match Pairs

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer: a
Correct formal forms.
Is this rule correct? True False Rule

Drop ㄹ before vowels.

✓ Correct! ✗ Not quite. Correct answer: b
Only drop before ㄴ, ㅂ, ㅅ.
Complete the dialogue. Dialogue Completion

A: 어디에 ___? B: 서울에 살아요.

✓ Correct! ✗ Not quite. Correct answer: a
Honorific form.
Conjugate '팔다'. Conjugation Drill

팔다 + ㅂ니다

✓ Correct! ✗ Not quite. Correct answer: a
Correct formal form.

Score: /8

Practice Exercises

8 exercises
Conjugate '살다' in formal style.

저는 서울에 ___.

✓ Correct! ✗ Not quite. Correct answer: b
The ㄹ is dropped before ㅂ.
Choose the correct form. Multiple Choice

그것은 내가 ___ 음식이다.

✓ Correct! ✗ Not quite. Correct answer: b
The ㄹ is dropped before ㄴ.
Correct the mistake. Error Correction

Find and fix the mistake:

그는 한국에 살십니다.

✓ Correct! ✗ Not quite. Correct answer: b
The ㄹ is dropped before ㅅ.
Build a sentence. Sentence Building

만들다 + ㅂ니다

✓ Correct! ✗ Not quite. Correct answer: a
Correct conjugation.
Match the verb to its formal form. Match Pairs

살다, 만들다, 놀다

✓ Correct! ✗ Not quite. Correct answer: a
Correct formal forms.
Is this rule correct? True False Rule

Drop ㄹ before vowels.

✓ Correct! ✗ Not quite. Correct answer: b
Only drop before ㄴ, ㅂ, ㅅ.
Complete the dialogue. Dialogue Completion

A: 어디에 ___? B: 서울에 살아요.

✓ Correct! ✗ Not quite. Correct answer: a
Honorific form.
Conjugate '팔다'. Conjugation Drill

팔다 + ㅂ니다

✓ Correct! ✗ Not quite. Correct answer: a
Correct formal form.

Score: /8

Practice Bank

10 exercises
Complete the sentence with '살다' (to live) using the '-(으)니까' ending. Fill in the Blank

한국에 __ 한국어를 잘해요.

✓ Correct! ✗ Not quite. Correct answer: 사니까
Reorder the words to say 'I know that person' (Formal). Sentence Reorder

[압니다] [그] [저는] [사람을]

✓ Correct! ✗ Not quite. Correct answer: 저는 그 사람을 압니다
Which form of '놀다' (to play) is correct when talking to a close friend using '-니?'? Multiple Choice

지금 어디서 ___?

✓ Correct! ✗ Not quite. Correct answer: 노니
Match the dictionary form with its correct '-ㅂ니다' conjugation. Match Pairs

Match them up!

✓ Correct! ✗ Not quite. Correct answer: 알다:압니다, 살다:삽니다, 팔다:팝니다, 길다:깁니다
Fix the mistake in this sentence: '이 빵이 정말 달네요!' Error Correction

✓ Correct! ✗ Not quite. Correct answer: 이 빵이 정말 다네요!
Translate 'Please sell this' using '팔다' and '-(으)세요'. Translation

Please sell this.

✓ Correct! ✗ Not quite. Correct answer: 이거 파세요
Use '만들다' (to make) in the 'narrative' present tense (-ㄴ다). Fill in the Blank

나는 매일 일기를 ___.

✓ Correct! ✗ Not quite. Correct answer: 만든다
Select the correct adjective form of '길다' (long) to modify '머리' (hair). Multiple Choice

저는 ___ 머리를 좋아해요.

✓ Correct! ✗ Not quite. Correct answer:
Translate 'Do you live in Seoul?' (Casual to a friend). Translation

Do you live in Seoul?

✓ Correct! ✗ Not quite. Correct answer: 서울에 사니?
Reorder to say 'The gift is making me happy' (using '만듭니다'). Sentence Reorder

[행복하게] [선물이] [저를] [만듭니다]

✓ Correct! ✗ Not quite. Correct answer: 선물이 저를 행복하게 만듭니다

Score: /10

FAQ (8)

It disappears to make pronunciation easier before certain consonants.

Only to verbs ending in ㄹ.

If the suffix starts with a vowel, the ㄹ stays.

Yes, it is standard in all forms of writing.

It will sound unnatural, but people will still understand you.

No, this is a very consistent rule.

Use the conjugation table and write sentences.

Yes, it applies to adjectives ending in ㄹ too.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

In Other Languages

Spanish low

Verb conjugation

Spanish conjugation is based on person, not phonology.

French partial

Liaison

French adds sounds; Korean deletes them.

German low

Verb inflection

German changes are vowel-based.

Japanese moderate

Verb conjugation

Japanese changes are based on the verb group.

Arabic low

Root system

Arabic roots are mostly consonants.

Chinese none

None

Chinese verbs are invariant.

Learning Path

Prerequisites

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