Korean Possibility with -ㄹ 수 있다 and -ㄹ 법하다: Expressing 'May Well' and 'Could Well'
Learn how Korean expresses strong modal possibility, equivalent to English 'may well' and 'could well', using -ㄹ 수 있다, -ㄹ 법하다, and -지도 모르다.
By TheaFirst conversations · Yapr Learn
English uses 'may well' and 'could well' to say that something is not just possible but strongly plausible. Korean does not have a single word that maps exactly onto these phrases. Instead, it combines a possibility ending such as -ㄹ 수 있다 with context, adverbs like 아마, and the pattern -ㄹ 법하다, which signals that something is reasonable or likely given the situation. This lesson teaches you to move beyond a plain 'maybe' and express stronger, better-supported possibility in natural Korean.
By the end, you can…
- use -ㄹ 수 있다 to express strong possibility in a full Korean sentence.
- distinguish -ㄹ 법하다 from a simple guess and use it to mean 'may well' or 'it stands to reason'.
- soften a strong possibility claim with -지도 모르다 when I want to avoid sounding too certain.
Listen once. Try it slowly. Then say it without looking.
Checking available voices…
그녀는 맞을 수 있어요.
She may well be right.
geu-nyeo-neun ma-jeul su i-sseo-yo
Plain strong possibility. The subject marker 는 and the object marker 을 are required here; Korean particles are generally not dropped the way English omits 'that'.
그는 늦을 법해요.
He may well be late. / It stands to reason that he will be late.
geu-neun neu-jeul beop-hae-yo
-ㄹ 법하다 adds the sense that the situation makes the outcome reasonable, not merely possible.
비가 올 수도 있어요.
It could well rain.
bi-ga ol su-do i-sseo-yo
Adding 도 to 수 softens the claim slightly, similar to English 'could well' rather than 'will definitely'.
아마 그게 진짜일 거예요.
That may well be true.
a-ma geu-ge jin-jja-il geo-ye-yo
아마 pairs naturally with -ㄹ 거예요 to mark a strong but unproven expectation.
그 사람이 범인일지도 몰라요.
That person may well be the culprit.
geu sa-ram-i beom-in-il-ji-do mol-la-yo
-ㄹ지도 몰라요 expresses possibility while keeping the speaker's distance; it is less assertive than -ㄹ 수 있다.
Pronunciation guides are approximate. Slow playback keeps the original pitch.
Make it make sense
Useful pattern
The core pattern is a verb or adjective stem plus -ㄹ 수 있다. With a consonant-final stem, use -을 수 있다; with a vowel-final stem, use -ㄹ 수 있다. For example, 맞다 becomes 맞을 수 있다 ('may well be right'), and 오다 becomes 올 수 있다 ('may well come'). To express stronger situational likelihood, use -ㄹ 법하다: 늦다 becomes 늦을 법하다 ('it stands to reason that someone is late'). Korean does not use articles or gender agreement, so the same form works for any subject. Tense is marked inside the stem, as in 늦었을 법하다 ('it may well have been late').
When to use it
Use -ㄹ 수 있다 when you want to state a real possibility without promising certainty: 그녀는 맞을 수 있어요. Use -ㄹ 법하다 when evidence or common sense supports the conclusion: 그는 늦을 법해요. Use -ㄹ지도 몰라요 when you want to sound tentative or polite: 그 사람이 범인일지도 몰라요. In formal writing or news, -ㄹ 수 있다 is neutral, while -ㄹ 법하다 often appears in commentary and analysis. Avoid stacking too many possibility markers in one sentence; choose the one that matches how strongly you want to commit.
Listen to each line, then take one part and reply out loud.
지금 출발하면 늦을 수 있어요.
If we leave now, we may well be late.ji-geum chul-bal-ha-myeon neu-jeul su i-sseo-yo맞아요. 아마 지하철이 더 빠를 거예요.
You're right. The subway may well be faster.ma-ja-yo. a-ma ji-ha-cheol-i deo ppa-reul geo-ye-yo그럼 택시를 탈 수도 있어요.
Then we could well take a taxi.geu-reom taek-si-reul tal su-do i-sseo-yo좋아요. 그게 가장 좋을 법해요.
Okay. That may well be the best option.jo-a-yo. geu-ge ga-jang jo-eul beop-hae-yoA little context goes a long way
Korean speakers often soften possibility claims to protect everyone's face. -ㄹ 수 있다 is neutral and safe in most settings, while -ㄹ 법하다 can sound analytical or slightly formal. In casual conversation, 아마 plus -ㄹ 거예요 is very common. When speaking to someone older or in a professional setting, prefer -ㄹ 수 있어요 or -ㄹ지도 몰라요 over blunt assertions.
One thing to watch for
Using -ㄹ 수 있다 as if it meant 'probably' in every context, for example saying 그녀는 맞을 수 있어요 when you mean 'She is probably right.'
Try this instead: -ㄹ 수 있다 states possibility, not probability. For a stronger, evidence-based guess, use -ㄹ 법하다 or 아마 ... -ㄹ 거예요. Example: 그녀는 아마 맞을 거예요 ('She is probably right') or 그녀는 맞을 법해요 ('It stands to reason that she is right').
Your turn
Try answering out loud before checking a possible answer.
1Translate into Korean: 'It may well rain tomorrow.'
Show a sample answer
내일 비가 올 수 있어요.
올 수 있어요 uses the vowel-final stem 오- plus -ㄹ 수 있다. 내일 비가 올 법해요 is also acceptable if you mean it stands to reason, but the plain possibility reading uses -ㄹ 수 있다.
2Which ending better fits a conclusion supported by evidence: -ㄹ 수 있다 or -ㄹ 법하다?
Show a sample answer
-ㄹ 법하다
-ㄹ 법하다 signals that the situation makes the outcome reasonable, as in 그는 늦을 법해요. -ㄹ 수 있다 is broader and does not require supporting evidence.
3Make this softer and more tentative: 그 사람이 범인이에요.
Show a sample answer
그 사람이 범인일지도 몰라요.
-ㄹ지도 몰라요 turns a flat statement into a tentative possibility. 그 사람이 범인일 수 있어요 is also valid, but it is slightly more assertive than -ㄹ지도 몰라요.
Use -ㄹ 수 있다 for strong possibility, -ㄹ 법하다 when the situation makes something reasonable, and -ㄹ지도 몰라요 when you want to stay tentative. Choose the ending that matches how much you want to commit.
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