Korean Grammar: How to Use -(으)려야 (으)ㄹ 수 없다 to Express Impossibility

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Learning Korean grammar patterns can be tricky, especially when expressing situations that are impossible despite effort. The pattern ‘-(으)려야 (으)ㄹ 수 없다’ allows learners to clearly express actions that cannot be done, even if you try. In this guide, you will learn its meaning, conjugation rules, practical examples, common mistakes, and exercises to help you master this essential grammar point.

By understanding ‘-(으)려야 (으)ㄹ 수 없다’, you can accurately describe limitations in daily life, work, or study, making your Korean more natural, fluent, and native-like.

1. Definition and Meaning of ‘-(으)려야 (으)ㄹ 수 없다’

1-1. Core Meaning of the Grammar Pattern

‘-(으)려야 (으)ㄹ 수 없다’ expresses actions that are impossible even if you try. It highlights inevitable limitations despite effort.

English equivalents:

  • “Even if someone tries, cannot …”
  • “No matter how hard you try, it’s impossible to …”
  • “Cannot possibly … despite trying”

1-2. Real-Life Situations for Usage

Native speakers use this pattern when circumstances prevent an action:

  • Planning to go somewhere but being blocked
  • Wanting to buy or eat something but conditions prevent it
  • Intending to study or work but lacking time or resources

2. How to Conjugate ‘-(으)려야 (으)ㄹ 수 없다’

2-1. Attaching to Verb Stems

  • Verb stem ending in a vowel → attach 려야
  • Verb stem ending in a consonant → attach 으려야
  • 하다 verbs → attach 하려야

Examples:

  • 가다 → 가려야 갈 수 없다 (Even if I try to go, I can’t)
  • 먹다 → 먹으려야 먹을 수 없다 (Even if I try to eat, I can’t)
  • 공부하다 → 공부하려야 공부할 수 없다 (Even if I try to study, I can’t)

2-2. Using Different Tenses

  • Present: Verb stem + (으)려야 + (으)ㄹ 수 없어요
    • 연락하려야 연락할 수 없어요 (Even if I try to contact, I can’t)
  • Past: Verb stem + (으)려야 + (으)ㄹ 수 없었어요
    • 참으려야 참을 수 없었어요 (Even if I tried to endure, I couldn’t)
  • Future: Verb stem + (으)려야 + (으)ㄹ 수 없을 거예요
    • 바꾸려야 바꿀 수 없을 거예요 (Even if I try to change it, I won’t be able)

📌 Tip: Use 없어요 / 없었어요 for present/past, and 없을 거예요 for future.

3. Everyday Examples of ‘-(으)려야 (으)ㄹ 수 없다’

3-1. Impossibility Due to Circumstances

This shows situations where external factors prevent an action, no matter how much you try.
It’s useful for describing everyday limits caused by events or conditions.

  • 비가 와서 소풍을 가려야 갈 수 없어요.
    (Even if I try to go on a picnic, I can’t.)
  • 차가 고장 나서 운전하려야 운전할 수 없어요.
    (Even if I try to drive, I can’t because the car is broken.)
  • 돈이 없어서 여행을 가려야 갈 수 없어요.
    (Even if I try to travel, I can’t.)
  • 병원 예약이 꽉 차서 진료를 받으려야 받을 수 없어요.
    (Even if I try to get a medical appointment, I can’t because it’s fully booked.)
  • 버스가 끊겨서 집에 가려야 갈 수 없어요.
    (Even if I try to go home, I can’t because the buses have stopped running.)
  • 비행기가 연착돼서 제시간에 도착하려야 도착할 수 없어요.
    (Because the flight is delayed, I can’t arrive on time even if I try.)

3-2. Extreme Conditional Limitation

Use this to emphasize that you are trying, but still cannot complete the action.
It highlights the gap between intention and actual ability.

  • 운동을 하려야 할 수가 없어요.
    (Even if I try to exercise, I can’t.)
  • 공부를 하려야 할 수가 없어요.
    (Even if I try to study, I can’t.)
  • 약속을 지키려야 지킬 수 없어요.
    (Even if I try to keep the promise, I can’t.)
  • 요리를 하려야 할 수 없어요.
    (Even if I try to cook, I can’t.)
  • 청소하려야 청소할 수 없어요.
    (Even if I try to clean, I can’t.)
  • 그림을 그리려야 그릴 수 없어요.
    (Even if I try to draw, I can’t.)

3-3. Expressing Extreme Conditional Limitation

This illustrates cases where even extreme effort cannot change the outcome.
It’s perfect for expressing strong impossibility or strict limits.

  • 빨리 가려야 갈 수 없어요.
    (Even if I try to hurry, I can’t make it.)
  • 많이 먹으려야 먹을 수 없어요.
    (Even if I try to eat a lot, I can’t.)
  • 일찍 일어나려야 일어날 수 없어요.
    (Even if I try to wake up early, I can’t.)
  • 버스를 타려야 탈 수 없어요.
    (Even if I try to take the bus, I can’t.)
  • 기차를 예약하려야 예약할 수 없어요.
    (Even if I try to reserve a train ticket, I can’t.)
  • 친구를 만나려야 만날 수 없어요.
    (Even if I try to meet my friend, I can’t.)

4. How to Use ‘-(으)려야 (으)ㄹ 수 없다’: Key Rules and Tips

  • Attach -(으)려야 before (으)ㄹ 수 없다
  • Use only with action verbs, not adjectives or nouns
  • Focus on inevitable impossibility, not personal unwillingness
  • Common in written Korean or expressive speech, less in casual conversation

5. ‘-(으)려야 (으)ㄹ 수 없다’ Practice Exercises for Learners

5-1. Fill-in-the-Blank Exercises

Fill-in-the-blank exercises: Complete the sentences using the correct form of ‘-(으)려야 (으)ㄹ 수 없다’.

  1. 비가 와서 소풍을 (가다) _____.
    (It rained, so even if I tried, I couldn’t go on the picnic.)

  2. 인터넷이 끊겨서 이메일을 (보내다) _____.
    (The internet was down, so even if I tried, I couldn’t send the email.)

  3. 손목이 아파서 그림을 (그리다) _____.
    (My wrist hurt, so even if I tried, I couldn’t draw.)

  4. 배가 너무 불러서 케이크를 (먹다) _____.
    (I was too full, so even if I tried, I couldn’t eat the cake.)

  5. 예약이 다 차서 공연을 (보다) _____.
    (All tickets were sold out, so even if I tried, I couldn’t watch the show.)

  6. 지갑을 잃어버려서 영화표를 (사다) _____.
    (I lost my wallet, so even if I tried, I couldn’t buy a movie ticket.)

  7. 너무 어두워서 길을 (걷다) _____.
    (It was too dark, so even if I tried, I couldn’t walk down the street.)

  8. 컴퓨터가 느려서 숙제를 (하다) _____.
    (My computer was too slow, so even if I tried, I couldn’t do my homework.)

  9. 너무 피곤해서 운동을 (하다) _____.
    (I was too tired, so even if I tried, I couldn’t exercise.)

  10. 문이 잠겨서 방에 (들어가다) _____.
    (The door was locked, so even if I tried, I couldn’t enter the room.)

5-2. Answers

  1. 가려야 갈 수 없었어요.
  2. 보내려야 보낼 수 없었어요.
  3. 그리려야 그릴 수 없었어요.
  4. 먹으려야 먹을 수 없었어요.
  5. 보려야 볼 수 없었어요.
  6. 사려야 살 수 없었어요.
  7. 걸으려야 걸을 수 없었어요.
  8. 하려야 할 수 없었어요.
  9. 하려야 할 수 없었어요.
  10. 들어가려야 들어갈 수 없었어요.

7. Common Mistakes When Using ‘-(으)려야 (으)ㄹ 수 없다’

6-1. Misunderstanding 1: Thinking -ㄹ 수 없다 Alone Conveys Trying

Many learners assume that -ㄹ 수 없다 fully shows the nuance of trying but failing.

Example of confusion:
운동할 수 없어요

Explanation:
Without -(으)려야, the sentence only states that something is impossible. It does not show the speaker’s effort or attempt.

Correct usage for grammar demonstration:
운동하려야 운동할 수 없어요 ✅
(Pedagogically fine. For natural speech, forms like 운동을 하려야 할 수가 없어요 or 운동하려고 해도 할 수 없어요 are more common.)

Tip for deeper learning: Check How to Use -을 수 있다/없다 in Korean for related examples of expressing ability and attempts.

6-2. Misunderstanding 2: Forgetting 으 for Consonant Stems

Some learners apply 려야 to verbs ending with a consonant, which is incorrect.

Example of confusion:
먹려야 먹을 수 없다 ❌

Explanation:
Consonant-ending stems require 으려야, while vowel-ending stems use 려야 (no 으).

Correct form:
먹으려야 먹을 수 없다 ✅


6-3. Misunderstanding 3: Confusing Impossibility with Unwillingness

Learners sometimes use this pattern to express “not wanting to” rather than “not being able to.”

Example of confusion:
공부하기 싫어서 공부하려야 공부할 수 없다 ❌

Explanation:
This sentence implies unwillingness, not external limitation. -(으)려야 (으)ㄹ 수 없다 should reflect external factors or circumstances beyond control, not personal choice.

Correct form:
시간이 없어서 공부하려야 공부할 수 없다 ✅

Tip for deeper learning: Compare with Expressing Willingness and Intention in Korean to understand the difference between intention and true impossibility.

7. How to Use ‘-(으)려야 (으)ㄹ 수 없다’ in Korean Grammar: Key Q&A

Q1: What is the difference between ‘-(으)려야 (으)ㄹ 수 없다’ and ‘-(으)려고 하다’?
A1:

  • ‘-(으)려고 하다’ → expresses intention or plan to do something
  • ‘-(으)려야 (으)ㄹ 수 없다’ → shows that even if you try, the action cannot happen due to external circumstances
  • Example:
    운동하려야 운동할 수 없어요. (Even if I try to exercise, I can’t.)
  • Related: -(으)려고 하다 Guide

Q2: How is ‘-(으)려야 (으)ㄹ 수 없다’ different from ‘-(으)ㄹ 수 없다’?
A2:

  • ‘-(으)ㄹ 수 없다’ → simply states impossibility
  • ‘-(으)려야 (으)ㄹ 수 없다’ → emphasizes that even attempting the action fails
  • Example:
    운동할 수 없어요 → general impossibility
    운동하려야 운동할 수 없어요 → shows failed attempt
  • Related: -(으)ㄹ 수 있다 / 없다 Guide

Q3: Can this pattern be used for unwillingness?
A3:

  • No. It only reflects external factors or limitations, not personal choice
  • Example (misunderstanding): 공부하기 싫어서 공부하려야 공부할 수 없다 → unnatural
  • Correct: 시간이 없어서 공부하려야 공부할 수 없다

Q4: Which tenses can be used with this pattern?
A4:

  • Present, past, and future all possible
  • Examples:
    • Present: 연락하려야 연락할 수 없어요
    • Past: 참으려야 참을 수 없었어요
    • Future: 바꾸려야 바꿀 수 없을 거예요

Q5: Why is mastering this pattern important?
A5:

Related Korean Grammar Lessons & Further Reading

These patterns are often studied together with ‘-(으)려야 (으)ㄹ 수 없다’ and help learners compare nuances of intention, possibility, and limitation.

-(으)ㄹ 수 있다 / 없다 (Can / Cannot…)

Indicates ability or possibility. -(으)려야 (으)ㄹ 수 없다 adds nuance that even trying does not make the action possible.

-(으)려고 하다 (Try to / Plan to…)

Shows attempting or planning an action. Comparing this with -(으)려야 (으)ㄹ 수 없다 highlights when effort alone cannot overcome circumstances.

-아/어/해도 되다 (May / Be Allowed to…)

Expresses permission or allowance. Useful to contrast with -(으)려야 (으)ㄹ 수 없다, which expresses impossibility regardless of desire or permission.

-(으)ㄹ까 하다 (Thinking of doing…)

Expresses tentative intention or consideration. Learners can compare this with -(으)려야 (으)ㄹ 수 없다 to understand the difference between consideration and actual inability.

-(으)ㄴ/는 편이다 (Tends to / Usually…)

Indicates a general tendency, habitual action, or typical characteristic. Contrasts with -(으)려야 (으)ㄹ 수 없다, which emphasizes actions that cannot be done despite trying.

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