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A2 noun 11 min read

~ㄹ/을 수도 있다

l/eul sudo itda
Examples
Explanation ~ㄹ/을 수도 있다 in your Level:
At the A1 level, you are just beginning to learn how to express things that aren't 100% certain. In English, we use 'maybe' or 'might.' In Korean, the structure ~ㄹ 수도 있다 is a great way to start doing this. Think of it as adding a little bit of 'maybe' to your verbs. For example, if you know the word '가다' (to go), you can change it to '갈 수도 있어요' to say 'I might go.' This is very helpful when you aren't sure about your plans. At this stage, you should focus on using this with very simple, common verbs like 'to eat' (먹다), 'to meet' (만나다), or 'to see' (보다). You don't need to worry about complex grammar rules yet; just remember that if a word ends in a vowel, you put 'ㄹ' under it, and if it ends in a consonant, you add '을' after it. This simple change allows you to talk about the future in a way that isn't just a promise. It makes your Korean sound more natural because, in real life, we are rarely 100% sure about everything! Practice saying '먹을 수도 있어요' (I might eat) or '볼 수도 있어요' (I might see it). This will help you get used to the sound of the structure and the space between the words.
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At the A2 level, you can start using ~ㄹ 수도 있다 to talk about more than just your own plans. You can use it to describe the weather, guess why a friend is late, or talk about simple possibilities in your daily life. For instance, '내일은 추울 수도 있어요' (It might be cold tomorrow) or '친구가 바쁠 수도 있어요' (My friend might be busy). This level is where you should also start paying attention to the 'ㄹ' irregular verbs. For example, '만들다' (to make) becomes '만들 수도 있어요.' You are also learning that this grammar is very polite. In Korean culture, being too direct can sometimes be a bit rude, so using 'might' helps you sound softer and more considerate of others' feelings. You can also start combining this with reasons using '니까'. For example, '늦을 수도 있으니까 빨리 가요' (Because I might be late, let's go quickly). This shows you are starting to build more complex thoughts. You should also practice using it with adjectives to describe possible states, like '매울 수도 있어요' (It might be spicy). This is very useful when you are at a restaurant with friends and want to warn them about the food.
By the B1 level, you should be comfortable using ~ㄹ 수도 있다 in a variety of social and professional situations. You can use it to speculate about the past by using the past tense form: '그 사람이 벌써 갔을 수도 있어요' (That person might have already left). This is a significant step because it allows you to discuss things that have already happened but that you aren't sure about. You should also be able to distinguish between ~ㄹ 수도 있다 and other similar structures like ~ㄹ 것 같다 (it seems like). At this level, you are expected to use this grammar to provide more nuanced explanations in workplace settings. For example, when discussing a project, you might say '문제가 생길 수도 있습니다' (A problem might arise). This shows you are thinking ahead and considering risks. You can also use it to suggest ideas tentatively to your colleagues or boss. Furthermore, you should be able to use the structure with the copula '이다' to say things like '그게 사실일 수도 있어요' (That might be the truth). Your ability to use this structure correctly in both present and past tenses, and with both verbs and adjectives, marks your transition into an intermediate learner who can handle more complex communicative tasks.
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At the B2 level, your use of ~ㄹ 수도 있다 should reflect a deep understanding of its logical and social functions. You can use it to engage in more abstract discussions, such as debating social issues or discussing hypothetical scenarios in literature or film. For example, you might discuss how a certain policy 'could lead to unexpected consequences' (예상치 못한 결과를 초래할 수도 있다). You should also be very aware of the social hierarchy and how this structure functions as a 'softener' in formal Korean. Using ~ㄹ 수도 있습니다 in a presentation shows a level of professional humility and academic caution. You are also able to use it in complex sentence structures, such as within nested clauses or followed by various conjunctions like '지라도' (even if) or '음에도 불구하고' (despite). You can also use it to express a sense of 'even' or 'also' more emphatically, highlighting that a particular outcome is possible even if it seems unlikely. For instance, '실패할 수도 있지만 도전하는 것이 중요합니다' (Even though I might fail, it's important to take the challenge). This level of usage shows that you are not just translating from English but are thinking in Korean and using the language's specific tools for nuance and politeness.
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As a C1 level learner, you use ~ㄹ 수도 있다 with precision and sophistication. You understand the subtle differences between this and more literary forms like ~ㄹ 법하다 or ~ㄹ 가능성이 농후하다. You can use it to express very subtle shades of doubt, irony, or even sarcasm depending on your intonation and context. In formal writing, such as essays or reports, you use this structure to maintain an objective tone, carefully qualifying your statements to avoid overgeneralization. For example, you might write about how 'cultural differences could potentially influence the outcome of a negotiation.' You are also adept at using it in fast-paced, high-level discussions where you need to quickly pivot between different possibilities. You can use it to play 'devil's advocate' in a conversation, suggesting alternative viewpoints by saying '그럴 수도 있겠지만...' (That might be the case, but...). Your mastery of this structure allows you to navigate complex social situations where directness is avoided, and you can pick up on the hidden meanings when native speakers use it to imply things they don't want to say directly. You are also proficient in using the structure with highly advanced vocabulary and idiomatic expressions, integrating it seamlessly into your overall linguistic repertoire.
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At the C2 level, ~ㄹ 수도 있다 is a tool you use with the same ease and nuance as a highly educated native speaker. You can use it to explore deep philosophical questions about existence, probability, and the nature of truth. For example, you might discuss the concept of 'what could have been' in a historical context or the 'potentiality of the human spirit.' Your use of this grammar is no longer a conscious choice but an instinctive part of your communication style. You can use it to create specific rhetorical effects, such as building suspense in a story or adding a layer of philosophical depth to a speech. You are also fully aware of the historical development of this structure and how it relates to other parts of the Korean language. You can analyze its use in classical literature or contemporary poetry, understanding how authors use it to create specific moods or themes. In professional or academic contexts, you use it to present complex theories with the appropriate level of scientific caution, demonstrating a complete grasp of epistemic modality. Your ability to use ~ㄹ 수도 있다 in all its forms—present, past, formal, informal, and combined with advanced particles—reflects a total immersion in the Korean language and culture.
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Examples
The Korean grammar structure ~ㄹ/을 수도 있다 is a fundamental building block for expressing possibility and uncertainty in the Korean language. At its core, it translates to 'might,' 'could,' or 'it is possible that...' in English. To understand this structure, one must first look at its components. It is derived from the basic potentiality marker ~ㄹ/을 수 있다, which typically signifies the ability to do something (can) or the objective possibility of an event. However, by adding the additive particle 도 (meaning 'also' or 'even'), the speaker shifts the focus from a simple statement of capability to a nuanced expression of one possibility among many. This addition creates a sense of tentativeness, making the statement less definitive and more speculative.
The Nuance of 'Also'
By using '도', you are literally saying 'It could ALSO be the case that...', which implies that while other outcomes are possible, this specific one is being considered. This is why it is frequently used to suggest things politely or to avoid sounding too certain about a future event.
Korean speakers use this form in a vast array of social contexts. In daily conversation, it helps soften the delivery of information that might be disappointing or unexpected. For instance, instead of saying 'It will rain' (which sounds like a definitive forecast), saying 'It might rain' allows the speaker to provide information without taking full responsibility if the weather remains clear.

내일은 비가 올 수도 있어요. (It might rain tomorrow.)

Furthermore, this structure is essential for maintaining social harmony, or 'nunchi'. In Korean culture, being overly direct can sometimes be perceived as aggressive or rude. By using ~ㄹ/을 수도 있다, a speaker can offer a different opinion or point out a potential problem without directly contradicting someone else. It provides a 'cushion' for the conversation. In academic or professional settings, it is used to discuss hypotheses or potential risks. It allows a researcher to present findings as possibilities rather than absolute truths, which is a hallmark of formal discourse.
Logical Deduction
This structure is also used when making a logical guess based on current evidence. If a store is closed, you might say 'They might have gone on vacation' using this grammar to show your thought process.

그 사람이 바쁠 수도 있어요. (That person might be busy.)

Frequency of Use
In modern spoken Korean, this is one of the most frequently used endings for expressing uncertainty, appearing in nearly every conversation about future plans or explanations for behavior.

매울 수도 있으니까 조심하세요. (It might be spicy, so be careful.)

길이 막힐 수도 있어요. (The road might be blocked/congested.)

제 말이 틀릴 수도 있습니다. (What I said might be wrong.)

Overall, mastering ~ㄹ/을 수도 있다 is essential for any learner who wishes to sound natural and culturally sensitive in Korean, as it allows for the expression of complex thoughts regarding probability while adhering to social norms of humility and indirectness.
Using ~ㄹ/을 수도 있다 correctly requires an understanding of Korean verb and adjective conjugation. The rule is based on whether the word stem ends in a vowel or a consonant (batchim). This consistency makes it relatively easy to apply once you know the base rules.
Rule 1: Stems ending in a Vowel
If the stem ends in a vowel, you attach ~ㄹ 수도 있다. For example, the verb 가다 (to go) has the stem 가. Since it ends in a vowel, it becomes 갈 수도 있다 (might go).
Rule 2: Stems ending in a Consonant
If the stem ends in a consonant (except for ㄹ), you attach ~을 수도 있다. For example, the verb 먹다 (to eat) has the stem 먹. Since it ends in a consonant, it becomes 먹을 수도 있다 (might eat).
Rule 3: Stems ending in 'ㄹ'
If the stem ends in the consonant ㄹ, you simply add 수도 있다 without adding another ㄹ. For example, 만들다 (to make) becomes 만들 수도 있다 (might make).
Irregular verbs also follow their standard patterns before attaching this structure. For instance, the 'ㅂ' irregular verb 덥다 (to be hot) changes its stem to 더우 before adding the ending, resulting in 더울 수도 있다 (might be hot). Similarly, the 'ㄷ' irregular verb 듣다 (to listen/hear) changes to 들을 수도 있다 (might hear).

그 사람이 약속을 잊었을 수도 있어요. (That person might have forgotten the promise/appointment.)

Note that the past tense can also be used with this structure. To express that something 'might have happened' in the past, you attach ~었/았/였을 수도 있다 to the verb stem. This is incredibly useful for speculating about past events where you lack certain information. The formality of the sentence is determined by how you conjugate the final '있다'. In polite spoken Korean, it usually becomes 수도 있어요. In formal settings, it becomes 수도 있습니다. In casual speech with friends, you would use 수도 있어.

이게 더 좋을 수도 있어요. (This might be better.)

친구가 이미 갔을 수도 있어요. (My friend might have already gone.)

그 영화가 재미없을 수도 있어요. (That movie might not be interesting.)

One important syntactic note is that ~ㄹ 수도 있다 can be followed by other connecting particles like ~니까 (because) or ~지만 (but). This allows for complex sentence structures like 'Because it might be late, let's go now' (늦을 수도 있으니까 지금 가요). This flexibility makes it an incredibly powerful tool for nuanced communication. Understanding these conjugation rules is the first step toward using this grammar naturally in your daily Korean interactions.
In the real world of Korean communication, ~ㄹ/을 수도 있다 is ubiquitous. You will hear it from the moment you step off a plane in Incheon to the casual conversations in a neighborhood convenience store. One of the most common places to encounter this is in the service industry. Staff members often use it to manage customer expectations. For example, a waiter might say 'The food might take a little long' (음식이 조금 늦게 나올 수도 있어요) as a way to prepare the customer for a wait without making a definitive promise about the time.
In the Media
News broadcasts and weather reports are filled with this grammar. Because news involves reporting on unfolding events and weather involves prediction, 'might' is a safer and more accurate way to convey information. You'll hear phrases like 'The economic situation might worsen' or 'Typhoons might affect the southern coast'.
In K-Dramas, this structure is frequently used in romantic tension or conflict. A character might say 'I might like you' (내가 너를 좋아할 수도 있어) to express feelings tentatively, protecting themselves from immediate rejection. Or, in a suspenseful scene, a detective might suggest 'The culprit might be someone we know'. This adds to the mystery and keeps the audience guessing.

그게 사실일 수도 있잖아요. (But that could be true, you know.)

At the workplace, Korean hierarchy often dictates a certain level of indirectness. Subordinates use ~ㄹ 수도 있다 when suggesting ideas to superiors or when reporting potential errors. Saying 'There might be a mistake' is much safer than saying 'There is a mistake'. It allows the superior to save face while still receiving the necessary information.
Health and Safety
Doctors and pharmacists use this to explain side effects or potential outcomes of a treatment. 'You might feel dizzy' (어지러울 수도 있어요) is a standard way to warn patients.
Even in casual friendships, it's used to make plans flexible. 'I might be a little late' (좀 늦을 수도 있어) is a very common text message sent between friends. It acknowledges the possibility of a delay without making it a certainty, which is often more socially acceptable than a definitive 'I will be late'.

어쩌면 제가 틀렸을 수도 있어요. (Maybe I might have been wrong.)

그 사람이 안 올 수도 있어요. (That person might not come.)

모를 수도 있죠, 사람이니까. (They might not know, since they're only human.)

By paying attention to these contexts, you'll see that ~ㄹ/을 수도 있다 is more than just a grammar rule; it's a vital social tool that facilitates smooth interaction in almost every aspect of Korean life.
While ~ㄹ/을 수도 있다 is a relatively straightforward structure, English speakers often encounter specific pitfalls when learning to use it naturally. The most common mistake is confusing it with the simple ~ㄹ 수 있다 (can/ability). While 'can' in English can sometimes mean 'it is possible,' in Korean, ~ㄹ 수 있다 strongly leans towards physical or mental capability. For example, if you say '한국어를 잘할 수 있어요,' you are saying 'I can speak Korean well.' But if you say '한국어를 잘할 수도 있어요,' you are saying 'It's possible that I speak Korean well,' which sounds strange and overly modest in most contexts.
Mistake 1: Overuse in Place of Ability
Learners often add '도' thinking it just makes the sentence more polite or 'softer,' but it actually changes the meaning to 'possibility' rather than 'ability.' Use the simple form for things you are actually capable of doing.
Another frequent error involves the spelling of the 'ㄹ' and '을' parts. Learners often forget the space before 수. In Korean orthography, '수' is a dependent noun, and it must be separated from the preceding modifier by a space. Writing '갈수도 있다' is a very common spelling error even among native speakers in casual texting, but it is technically incorrect.

❌ 갈수도 있어요 (Incorrect spacing)
✅ 갈 수도 있어요 (Correct spacing)

Mistake 2: Tense Misplacement
When talking about the past, some learners try to put the past tense marker on the '있다' at the end (e.g., 갈 수도 있었다). While this is grammatically possible, it means 'I could have gone (but didn't).' To say 'He might have gone' (speculating about a past event), the past tense marker must go on the verb before '수도' (갔을 수도 있다).
Learners also struggle with negative sentences. To say 'It might not happen,' the '안' or '못' must come before the verb, or the negative verb '없다' must be used carefully. A common mistake is saying '갈 수도 없어요,' which actually means 'I can't even go' (lack of ability/possibility), rather than '안 갈 수도 있어요' (I might not go). The placement of the negative particle completely changes the meaning from 'possibility of not doing' to 'lack of possibility to do.'

안 올 수도 있어요 vs. 올 수도 없어요

Mistake 3: Confusing with ~ㄹ지도 모르다
While both mean 'might,' ~ㄹ지도 모르다 suggests a slightly higher level of doubt or worry. Using ~ㄹ 수도 있다 is more neutral and indicates a logical possibility.
Finally, avoid using this structure when you are 100% certain. If you are sure about something, using ~ㄹ 수도 있다 can make you sound indecisive or even suspicious, as if you are hiding the truth. Understanding these subtle distinctions will help you use this grammar with the precision of a native speaker.
In Korean, there are several ways to express possibility, and choosing the right one depends on the level of certainty and the specific nuance you want to convey. ~ㄹ/을 수도 있다 is the most common, but it's helpful to know the alternatives.
~ㄹ지도 모르다 vs ~ㄹ 수도 있다
Both mean 'might,' but ~ㄹ지도 모르다 (literally: 'I don't even know if...') carries a nuance of stronger uncertainty or even worry. It's often used when the speaker is guessing about something they have very little information about. ~ㄹ 수도 있다 is more about logical possibility.
~ㄹ 것 같다 vs ~ㄹ 수도 있다
~ㄹ 것 같다 means 'it seems like' or 'it looks like.' It is the most common way to express an opinion or a guess in Korean. It is generally more certain than ~ㄹ 수도 있다. If you say '비가 올 것 같아요,' you are saying 'It looks like it will rain.' If you say '비가 올 수도 있어요,' you are saying 'It's a possibility that it will rain.'
아마 vs ~ㄹ 수도 있다
'아마' is an adverb meaning 'probably' or 'maybe.' It is often used in conjunction with ~ㄹ 수도 있다 or ~ㄹ 것 같다 to further emphasize the uncertainty. For example, '아마 갈 수도 있어요' (Maybe I might go).

비가 올지도 몰라요. (It might rain - more worry/doubt.)

비가 올 것 같아요. (It seems like it will rain - based on looking at the sky.)

~ㄹ 법하다
This is a more literary or formal way of saying something is 'quite possible' or 'likely to happen.' It suggests that based on reason, something should be the case. It's much less common in daily speech than ~ㄹ 수도 있다.
혹시
This adverb means 'by any chance' or 'perhaps.' It's frequently used at the start of questions to make them more polite, often paired with ~ㄹ 수도 있다. '혹시 그럴 수도 있나요?' (Could that be the case by any chance?)

그럴 가능성도 있습니다. (There is also a possibility of that - very formal.)

그럴 리가 없어요. (There's no way that's the case - the opposite of possibility.)

Understanding these synonyms allows you to fine-tune your Korean to match the exact level of uncertainty you feel, making your speech much more expressive and precise.
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Examples by Level

1

내일 갈 수도 있어요.

I might go tomorrow.

가다 (to go) + ㄹ 수도 있다.

2

밥을 먹을 수도 있어요.

I might eat food.

먹다 (to eat) + 을 수도 있다.

3

친구가 올 수도 있어요.

A friend might come.

오다 (to come) + ㄹ 수도 있다.

4

책을 볼 수도 있어요.

I might see/read a book.

보다 (to see/read) + ㄹ 수도 있다.

5

공부할 수도 있어요.

I might study.

공부하다 (to study) + ㄹ 수도 있다.

6

영화를 볼 수도 있어요.

I might watch a movie.

보다 (to watch) + ㄹ 수도 있다.

7

커피를 마실 수도 있어요.

I might drink coffee.

마시다 (to drink) + ㄹ 수도 있다.

8

노래할 수도 있어요.

I might sing.

노래하다 (to sing) + ㄹ 수도 있다.

1

내일은 비가 올 수도 있어요.

It might rain tomorrow.

오다 (to come) + ㄹ 수도 있다.

2

길이 막힐 수도 있어요.

The road might be blocked/congested.

막히다 (to be blocked) + ㄹ 수도 있다.

3

음식이 매울 수도 있어요.

The food might be spicy.

맵다 (to be spicy) -> 매울 수도 있다 (ㅂ irregular).

4

그 사람이 바쁠 수도 있어요.

That person might be busy.

바쁘다 (to be busy) + ㄹ 수도 있다.

5

버스가 늦을 수도 있어요.

The bus might be late.

늦다 (to be late) + 을 수도 있다.

6

가게가 닫았을 수도 있어요.

The store might be closed.

닫다 (to close) + 았을 수도 있다 (past possibility).

7

선물이 작을 수도 있어요.

The gift might be small.

작다 (to be small) + 을 수도 있다.

8

이게 더 비쌀 수도 있어요.

This might be more expensive.

비싸다 (to be expensive) + ㄹ 수도 있다.

1

회의가 길어질 수도 있습니다.

The meeting might get long.

길어지다 (to become long) + ㄹ 수도 있다.

2

이미 소문이 났을 수도 있어요.

The rumor might have already spread.

나다 (to appear/happen) + 았을 수도 있다.

3

계획이 바뀔 수도 있어요.

The plan might change.

바뀌다 (to change) + ㄹ 수도 있다.

4

그게 오해일 수도 있어요.

That might be a misunderstanding.

오해 (misunderstanding) + 이다 (to be) + ㄹ 수도 있다.

5

부작용이 있을 수도 있습니다.

There might be side effects.

있다 (to exist/have) + 을 수도 있다.

6

깜빡 잊었을 수도 있어요.

I/He might have forgotten for a moment.

잊다 (to forget) + 었을 수도 있다.

7

더 좋은 방법이 있을 수도 있어요.

There might be a better way.

있다 (to exist/have) + 을 수도 있다.

8

비밀이 새어나갔을 수도 있어요.

The secret might have leaked out.

새어나가다 (to leak out) + 았을 수도 있다.

1

예상치 못한 결과가 나올 수도 있습니다.

Unexpected results might come out.

나오다 (to come out) + ㄹ 수도 있다.

2

누구나 실수할 수도 있어요.

Anyone can/might make a mistake.

실수하다 (to make a mistake) + ㄹ 수도 있다.

3

상황이 악화될 수도 있습니다.

The situation might worsen.

악화되다 (to worsen) + ㄹ 수도 있다.

4

그의 말이 진심일 수도 있어요.

His words might be sincere.

진심 (sincerity) + 이다 (to be) + ㄹ 수도 있다.

5

환경에 영향을 줄 수도 있습니다.

It might affect the environment.

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