This page in your language

فارسی

العربية

Deutsch

Español

Français

日本語

한국어

Português

中文

हिन्दी

Home
Learn
Japanese
Vocabulary
〜わけにはいかない

B1 noun #5,000 most common 10 min read

〜わけにはいかない

Top 5,000

Practice it Examples Notes & Tips 〜わけにはいかない in 30 Seconds

Explanation 〜わけにはいかない in your Level:

At the A1 level, learners are just beginning to grasp basic sentence structures and vocabulary. The concept of nuanced grammatical expressions like 〜わけにはいかない is far beyond the scope of A1. At this stage, learners focus on simple statements, greetings, and basic questions. They would use very simple negations like 〜ない (nai) to express inability or unwillingness, without the added layers of obligation or circumstantial impossibility.

A2 learners are expanding their vocabulary and can form more complex sentences. They are starting to understand basic conditional sentences and reasons. While they can express simple inability using 〜ない (nai) or 〜ことができない (koto ga dekinai), the subtle implications of 〜わけにはいかない regarding social or moral obligations are still too advanced. They might encounter this phrase in listening or reading but would struggle to produce it naturally or understand its full meaning without context.

B1 learners are capable of understanding the main points of clear standard input on familiar matters. They can produce simple connected text on topics which are familiar or of personal interest. This is where 〜わけにはいかない becomes relevant. Learners at this level can start to grasp the concept of 'cannot afford to' or 'it's not possible due to circumstances/obligation'. They can begin to use it in their own speech and writing, especially in contexts involving personal responsibility, promises, or common social situations. They are learning to differentiate it from simpler negations.

B2 learners can understand the main ideas of complex text on both concrete and abstract topics. They can interact with a degree of fluency and spontaneity that makes regular interaction with native speakers quite possible without strain for either party. At this level, learners should have a solid understanding of 〜わけにはいかない. They can use it effectively to convey nuanced meanings of obligation, necessity, and circumstantial impossibility in a variety of contexts, including professional and more abstract discussions. They are comfortable distinguishing its usage from similar expressions.

C1 learners can understand a wide range of demanding, longer texts, and recognize implicit meaning. They can express themselves fluently and spontaneously without much obvious searching for expressions. For C1 learners, 〜わけにはいかない is a natural part of their active vocabulary. They can use it with precision to convey subtle shades of meaning, including irony, strong personal resolve, or a deep sense of duty. They are aware of its idiomatic nature and can employ it in sophisticated discourse, understanding its cultural implications.

C2 learners can understand with ease virtually everything heard or read. They can summarize information from different spoken and written sources, reconstructing arguments and accounts in a coherent presentation. At the C2 level, 〜わけにはいかない is fully integrated into their linguistic repertoire. They can recognize and utilize it in its most nuanced and idiomatic forms, understanding its historical development and cultural weight. They can also explain its usage and distinctions to others with expert clarity.

Practice it Examples Notes & Tips

〜わけにはいかない in 30 Seconds

Cannot afford to do something due to obligation or circumstances.
Implies a strong 'must not' or 'it's not feasible'.
Attaches to the plain form of verbs.
Common in situations of duty, promises, and difficult choices.

Core Meaning: The phrase 〜わけにはいかない (wake ni wa ikanai) is a grammatical structure used to express that something is not possible or permissible due to circumstances, moral obligations, or social pressure. It implies that one *should not* or *cannot* do something, even if they might personally want to or be physically capable of doing so. It carries a sense of necessity or strong advisability to refrain from an action.
Nuance of Obligation: While it can sometimes indicate a physical impossibility, it more often points to a situation where doing something would lead to negative consequences, violate a rule, break a promise, or go against one's conscience. It's about what is *socially* or *morally* unacceptable, or simply not feasible given the current situation.
Common Usage Scenarios: This expression is frequently encountered in situations where someone has a responsibility, a promise to keep, or a strong sense of duty. For example, if someone is sick, they might say they 'can't afford to go to work' (仕事に行くわけにはいかない - shigoto ni iku wake ni wa ikanai) because it would be irresponsible or potentially spread illness. Similarly, if a friend is in trouble, one might feel they 'cannot afford to abandon them' (友達を見捨てるわけにはいかない - tomodachi o misuteru wake ni wa ikanai).
Emotional Undertones: The phrase often carries a tone of resignation, determination, or even a slight frustration. The speaker is acknowledging a constraint that prevents them from acting in a certain way, even if it's difficult. It's a way of saying 'I have to do the right thing' or 'It's just not an option for me to do that.'
Grammatical Structure: It attaches to the plain form of a verb (dictionary form or ない form). For instance, for the verb 食べる (taberu - to eat), it would be 食べるわけにはいかない (taberu wake ni wa ikanai). For できない (dekinai - cannot do), it would be できないわけにはいかない (dekinai wake ni wa ikanai).

Tomorrow is the important exam, so I cannot afford to fail.

明日は大事な試験だから、落ちるわけにはいかない。

Because I promised my mother, I cannot afford to break my word.

母と約束したから、約束を破るわけにはいかない。

Distinction from other negatives: While similar to 〜ない (nai) or 〜ことができない (koto ga dekinai), 〜わけにはいかない adds a layer of obligation or circumstantial impossibility. For example, 食べない (tabenai) simply means 'do not eat,' whereas 食べないわけにはいかない (tabenai wake ni wa ikanai) implies 'I must not eat this' due to a diet, a promise, or a specific situation.

The client is waiting, so I cannot afford to be late.

お客さんが待っているので、遅れるわけにはいかない。

Verb Plain Form + わけにはいかない: The most common way to use 〜わけにはいかない is by attaching it to the plain form of a verb. This includes the dictionary form (u-verbs, ru-verbs) and the ない-form. This structure indicates that the action of the verb cannot or should not be performed due to some circumstance.

I have a stomachache, so I cannot afford to eat this.

お腹が痛いから、これを食べるわけにはいかない。

Using with Potential Form (Indirectly): While you don't directly attach 〜わけにはいかない to the potential form, you can express a similar idea. For example, instead of saying 'I cannot be able to do X', you would say 'I cannot do X' using the standard structure. The nuance of inability is already built into 〜わけにはいかない itself.

I have a promise with my friend, so I cannot afford to cancel.

友達との約束があるから、キャンセルするわけにはいかない。

Expressing Moral or Social Obligation: This phrase is excellent for conveying a sense of duty or a situation where one feels compelled to act or refrain from acting. It's often used when there's a conflict between personal desire and external or internal obligations.

As a doctor, I cannot afford to ignore a patient's suffering.

医者として、患者の苦しみを無視するわけにはいかない。

Situations of Impossibility (Circumstantial): It can also be used when an action is simply not feasible due to current conditions, even if there's no strong moral imperative. For instance, if it's raining heavily, one might say they 'cannot afford to go out without an umbrella'.

It's pouring rain, so I cannot afford to forget my umbrella.

ひどい雨だから、傘を忘れるわけにはいかない。

Use with 〜なければならない (nakereba naranai): These two structures are often used in conjunction or in similar contexts. 〜なければならない means 'must do', while 〜わけにはいかない means 'cannot afford to do' or 'must not do'. They represent opposite sides of obligation.

I must study hard. I cannot afford to fail the exam.

一生懸命勉強しなければならない。試験に落ちるわけにはいかない。

Everyday Conversations: You'll hear 〜わけにはいかない frequently in casual conversations among friends, family, and colleagues. It's used to explain why someone is choosing not to do something or why they are undertaking a difficult task. For instance, someone might say they 'cannot afford to skip work' even if they feel unwell because their team is short-staffed. Or a parent might say they 'cannot afford to let their child play outside alone' due to safety concerns.

Friend A: Let's go out tonight!
Friend B: I wish I could, but I have to finish this report. I cannot afford to delay it.

A: 今夜遊びに行こうよ！ B: 行きたいんだけど、このレポートを終わらせなくちゃ。延期するわけにはいかないんだ。

Workplace Scenarios: In professional settings, this phrase is used to emphasize responsibility and commitment. A subordinate might explain to their boss why they are staying late, stating they 'cannot afford to miss the deadline'. A manager might explain to a team member why a certain task is critical, implying that 'failure is not an option'. It conveys a sense of seriousness and dedication to one's duties.

Manager: This project is extremely important.
Employee: Yes, I understand. I cannot afford to make any mistakes.

上司：このプロジェクトは非常に重要です。部下：はい、承知しております。ミスをするわけにはいきません。

Dramas and Media: Japanese dramas, anime, and movies often feature characters using 〜わけにはいかない to express their dilemmas, their sense of duty, or the difficult choices they face. A protagonist might declare they 'cannot afford to give up' in the face of adversity, or a character might explain why they must take a certain path, even if it's painful. It's a powerful tool for conveying internal conflict and determination.

Character A: You should just run away!
Character B: I can't. I have to protect them. I cannot afford to abandon my post.

A: 逃げればいいじゃないか！ B: 逃げられない。守らなければならないんだ。ここで見捨てるわけにはいかない。

Ethical and Moral Discussions: In discussions about ethics, personal values, or societal norms, 〜わけにはいかない is often used to articulate what is considered right or wrong, or what is expected of individuals in certain roles. It's a way of saying 'this is how things should be' or 'this is the standard I must uphold'.

It is our duty as citizens to help those in need. We cannot afford to turn a blind eye.

困っている人を助けるのは、市民としての義務だ。見て見ぬふりをするわけにはいかない。

Using the Positive Form Incorrectly: The positive form, 〜わけにはいく (wake ni wa iku), is grammatically correct but extremely rare in natural Japanese. Learners sometimes mistakenly try to use it to mean 'it is possible to' or 'can afford to'. This is incorrect. The standard way to express possibility is using 〜ことができる (koto ga dekiru) or the potential form of verbs. The positive form of 〜わけにはいかない often implies a forceful assertion that something is possible despite expectations, which is usually not the intended meaning. Stick to the negative form for 'cannot afford to'.

Incorrect: 明日、パーティーに行くわけにはいく。
Correct: 明日、パーティーに行くことができる。(I can go to the party tomorrow.)

Confusing with Simple Negation: Simply using the plain negative form (〜ない - nai) or 〜ことができない (koto ga dekinai) can lose the nuance of obligation or circumstantial impossibility that 〜わけにはいかない provides. While they might translate to 'cannot do', they don't carry the same weight of 'must not do' or 'it's not feasible due to circumstances'.

Less Nuanced: 宿題をしない。(I don't do homework.)
More Nuanced: 宿題をしないわけにはいかない。(I cannot afford to not do my homework / I must do my homework.)

Incorrect Verb Conjugation: Ensure you are using the plain form of the verb before attaching 〜わけにはいかない. This includes the dictionary form for positive verbs and the ない-form for negative verbs. Attaching it to masu-form verbs or other conjugated forms will be grammatically incorrect.

Incorrect: 食べますわけにはいかない。
Correct: 食べるわけにはいかない。(I cannot afford to eat.)

Overusing it in situations where simpler negation suffices: While 〜わけにはいかない is versatile, overuse can make your Japanese sound unnatural or overly dramatic. If the situation is a simple statement of inability without any strong sense of obligation or consequence, a simpler negative might be more appropriate. For example, if you simply cannot lift a heavy box because it's too heavy, you might say '持ち上げることができない' (mochiageru koto ga dekinai) rather than implying a deep moral or circumstantial reason.

Overly dramatic: この箱は重すぎて、持ち上げるわけにはいかない。
More natural: この箱は重すぎて、持ち上げることができない。(This box is too heavy, I cannot lift it.)

〜なければならない (nakereba naranai): This is the direct counterpart, meaning 'must do' or 'have to do'. While 〜わけにはいかない focuses on what *cannot* or *should not* be done, 〜なければならない focuses on what *must* be done. They often appear together to express a complete situation: 'I must do X, so I cannot afford to do Y'.; Example: 締め切りがあるから、遅れるわけにはいかない。(Because there's a deadline, I cannot afford to be late.) vs. 締め切りがあるから、時間通りに終わらせなければならない。(Because there's a deadline, I must finish on time.)

〜てはいけない (te wa ikenai): This is a direct prohibition, meaning 'must not do' or 'it is forbidden to do'. It's stronger and more direct than 〜わけにはいかない, often indicating a rule or a strict command. 〜わけにはいかない is more about circumstances, social pressure, or moral obligation, implying a more nuanced impossibility rather than a direct ban.; Example: ここでタバコを吸ってはいけない。(You must not smoke here.) vs. 健康のために、タバコを吸うわけにはいかない。(For my health, I cannot afford to smoke.)

〜ことができない (koto ga dekinai): This is a general expression for 'cannot do', indicating a lack of ability or opportunity. It's more neutral than 〜わけにはいかない. 〜わけにはいかない implies a reason *why* one cannot do something, often related to obligation or circumstances, whereas 〜ことができない simply states the inability.; Example: 彼は日本語を話すことができない。(He cannot speak Japanese.) vs. 彼はまだ日本語を勉強中なので、流暢に話すわけにはいかない。(Since he is still studying Japanese, he cannot afford to speak fluently.)

〜はずがない (hazu ga nai): This means 'there is no way that...' or 'it cannot be that...', expressing strong disbelief or certainty that something is not true or possible. It's about logical impossibility or strong doubt, not about obligation or circumstantial difficulty like 〜わけにはいかない.; Example: 彼がそんなことをするはずがない。(There is no way he would do such a thing.) vs. 彼は忙しいので、今日中に終わらせるわけにはいかない。(Since he is busy, he cannot afford to finish it today.)

〜ないわけにはいかない (nai wake ni wa ikanai): This is the negation of the verb itself, used within the 〜わけにはいかない structure. It means 'cannot afford to *not* do something', which is equivalent to 'must do'. This is a very common and important variation.; Example: 感謝の気持ちを伝えないわけにはいかない。(I cannot afford to not express my gratitude, meaning: I must express my gratitude.)

How Formal Is It?

Fun Fact

While ‑いかない is the negative of いく (to go), in this idiomatic expression, it doesn't literally mean 'cannot go'. Instead, it signifies impossibility or unacceptability. The verb 'iku' here acts more like a general indicator of 'proceeding' or 'happening'. The nuance is similar to saying 'it cannot proceed that way' or 'it cannot be done that way' due to the prevailing 'wake' (reason/circumstance).

Pronunciation Guide

UK /wɑːˈkeɪ nɪ wɑː ɪˈkɑːnaɪ/

US /wɑːˈkeɪ ni wɑː ɪˈkɑːnaɪ/

The primary stress falls on the first syllable of 'wake' (wa-) and the first syllable of 'kanai' (-ka-). There's a secondary stress on 'ni'.

Rhymes With

wakeniwa nakereba shikata ga nai dame da ikenai shiranai shinpai kama'nai

Common Errors

Pronouncing 'wake' as 'week'.
Merging 'ni wa' into a single sound.
Incorrect vowel length in 'ka' or 'nai'.
Overlooking the 'i' sound at the beginning of 'ikanai'.

Difficulty Rating

Reading 3/5

At B1 level, learners can understand the main points of clear standard input. Encountering 〜わけにはいかない in texts about familiar topics like daily life, work, or personal dilemmas is manageable. The context usually clarifies the meaning of obligation or circumstantial impossibility. Advanced texts might use it with more complex reasoning, requiring deeper comprehension.

Writing 3/5

Learners at B1 can start to use 〜わけにはいかない to express their own obligations and constraints. However, ensuring correct verb conjugation and appropriate context requires practice. Overuse or misuse, especially confusing it with simple negation, is common initially. With practice, it becomes a valuable tool for expressing nuanced meanings.

Speaking 3/5

Producing 〜わけにはいかない naturally in spontaneous speech requires confidence and accurate grammatical recall. Learners might hesitate or use simpler alternatives. Focusing on common collocations and practicing in role-playing scenarios can help improve fluency and accuracy.

Listening 3/5

Recognizing 〜わけにはいかない in spoken Japanese is generally achievable for B1 learners, especially when spoken clearly and in familiar contexts. The intonation and surrounding words usually provide clues to its meaning of obligation or impossibility. Fast or informal speech might make it harder to distinguish.

What to Learn Next

Prerequisites

Verb plain forms (dictionary, ない-form) Particles (は, に, が, から, ので) Basic negation (〜ない) Expressions of obligation (〜なければならない) Basic sentence structure

Learn Next

〜ざるを得ない (zaru o enai - formal 'cannot help but do') 〜べきではない (beki de wa nai - 'should not do') 〜はずがない (hazu ga nai - 'there is no way') 〜に違いない (ni chigainai - 'must be')

Advanced

Nuances of modal verbs and auxiliary verbs Idiomatic expressions related to obligation and impossibility Cultural understanding of giri (義理) and ninjo (人情)

Grammar to Know

Plain Form of Verbs

The phrase attaches to the dictionary form (e.g., 食べる - taberu) or the ない-form (e.g., 食べない - tabenai). Understanding these basic verb conjugations is crucial.

Particles (は, に)

The particle に (ni) indicates the circumstance or basis, while は (wa) can mark 'wake' as the topic. For example, 「彼が来るわけにはいかない」(Kare ga kuru wake ni wa ikanai) - 'He cannot afford to come' (the reason is implied).

Negation (〜ない)

The phrase itself is a negative construction. Understanding how to form negative verbs (e.g., 食べる → 食べない) is fundamental.

Expressing Obligation (〜なければならない)

This is often paired with 〜わけにはいかない. For example, 「勉強しなければならないから、遊ぶわけにはいかない。」(I must study, so I cannot afford to play.)

Conditional Sentences (〜たら, 〜なら, 〜ば)

While not directly part of the phrase, the 'circumstances' often imply a conditional situation. For example, 「もし雨が降ったら、出かけるわけにはいかない。」(If it rains, I cannot afford to go out.)

Examples by Level

I don't eat.

Simple negation.

Basic verb negation.

I cannot go.

Simple statement of inability.

Using 〜ない form.

This is not possible.

General statement of impossibility.

Using 〜ない form.

I don't want to do it.

Expressing lack of desire.

Using 〜たくない.

I am busy.

Stating a current condition.

Basic adjective/noun usage.

I have to go.

Simple statement of necessity (often learned early).

Using 〜なければならない (basic form).

I will not do it.

Firm refusal.

Future tense negation.

It is difficult.

Describing a state.

Basic adjective usage.

I cannot eat this.

Expressing inability to eat something specific.

Using 〜ことができない.

I cannot go to the party.

Stating inability to attend an event.

Using 〜ない and context.

It is not possible to finish today.

Stating a task cannot be completed.

Using 〜ことができない.

I must study.

Expressing a duty.

Using 〜なければならない.

I promised my friend.

Stating a commitment.

Past tense of promise.

I have a cold, so I cannot go out.

Giving a reason for not going out.

Using 〜から and 〜ない.

I don't want to make a mistake.

Expressing a desire to avoid errors.

Using 〜たくない.

It is too late to go now.

Stating lateness as a reason.

Using 〜すぎる and 〜ない.

I have a big exam tomorrow, so I cannot afford to fail.

Emphasizing the importance of passing.