B1 Idiom フォーマル 5分で読める

tourner casaque

To hit the target

直訳: to turn jacket

15秒でわかる

  • Means to switch sides or betray loyalty.
  • Originates from soldiers turning reversible jackets.
  • Implies disloyalty or opportunism.
  • Use for significant, dramatic changes.

意味

突然考えを変えたり、立場を変えたり、元の忠誠心を裏切ったりすることを意味します。「転向者」のように、敵のためにチームを捨てるようなものです。

主な例文

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1

Texting a friend about a political debate

J'arrive pas à croire que mon député ait `tourné casaque` sur la loi. C'est une trahison !

I can't believe my representative `switched sides` on the law. It's a betrayal!

2

Discussing a movie plot twist with friends

Au début, je pensais que le héros était gentil, mais il a `tourné casaque` à la fin. Quel choc !

At first, I thought the hero was good, but he `switched sides` at the end. What a shock!

3

Talking about a friend's sudden change of hobby

Il était obsédé par le cyclisme, et maintenant il ne parle que de tricot. Il a vraiment `tourné casaque` !

He was obsessed with cycling, and now he only talks about knitting. He really `changed his tune`!

🌍

文化的背景

In French politics, 'tourner casaque' is a serious insult. It was famously used during the 'fronde' and later during the various shifts between the Republic and the Monarchy. In Quebec, while understood, people might more frequently use 'virer son capot' (to turn one's hood/coat), which is the local equivalent with the same historical roots. Belgian French uses 'tourner casaque' in similar political contexts, especially regarding the complex coalitions between parties. The phrase is well-known in Romandy (French-speaking Switzerland), often used to describe shifts in local cantonal politics.

🎯

Master the Nuance

Use 'tourner casaque' when you want to sound more sophisticated or when discussing history/politics. Use 'retourner sa veste' in a bar with friends.

⚠️

Don't use an article!

Saying 'tourner LA casaque' is a common mistake that immediately marks you as a learner. Keep it as 'tourner casaque'.

15秒でわかる

  • Means to switch sides or betray loyalty.
  • Originates from soldiers turning reversible jackets.
  • Implies disloyalty or opportunism.
  • Use for significant, dramatic changes.

What It Means

Ever felt like someone suddenly switched teams? That's tourner casaque! It means to change your mind completely. You might switch sides in an argument. Or maybe you abandon your original beliefs. It's like becoming a 'turncoat.' You're no longer loyal to your first choice. It often implies opportunism. You might switch because it's more beneficial. Or simply because you've changed your mind drastically. It’s a sudden, often surprising, shift.

Origin Story

This colorful idiom comes from the world of soldiers and warfare. Back in the day, soldiers might wear a uniform jacket that could be reversed. One side might be one color, the other side a different color. If a soldier wanted to secretly switch allegiance to the enemy, they could literally turn their jacket inside out! This showed they were now on the other side. It was a very visible sign of betrayal. Imagine the drama on the battlefield! It's a visual metaphor for changing sides. The French word casaque refers to a type of long coat or jacket, often worn by soldiers or postmen. So, tourner casaque means to physically turn this jacket. It’s a clever way to show a change of heart. Or, more dramatically, a change of loyalty. It’s like a secret handshake for traitors. But, you know, with more fabric.

How To Use It

Use tourner casaque when someone drastically changes their stance. They were pro-X, now they are anti-X. They supported Team A, now they're wearing Team B's jersey. It works for opinions, loyalties, and even political stances. Think about someone who was a staunch critic. Then, suddenly, they become a huge fan. They have clearly tourné casaque. It’s a vivid image. It paints a picture of sudden change. You can use it to describe a person's action. Or you can use it to describe the action itself. For example, 'his decision to tourner casaque surprised everyone.' It’s quite direct. It leaves little room for ambiguity. It’s not subtle, but it's effective. Like a loud klaxon signaling a U-turn.

Real-Life Examples

  • A politician was elected on one platform. Then, they voted for the opposite. They tourné casaque. Their supporters felt betrayed. It’s a classic case.
  • My friend swore they hated a certain band. Now they stream their music daily. They really tourné casaque on that one.
  • The company was known for its ethical practices. Then, it was bought by a controversial firm. Some employees felt the company tourné casaque.
  • In a debate, someone might switch their argument. They might tourner casaque mid-discussion. This can be seen as weak. Or perhaps just very persuasive.
  • Social media users sometimes tourner casaque. They might delete old posts. They adopt new opinions to fit in. It’s the digital age version.

When To Use It

You use tourner casaque when the change is significant. It's not for minor shifts in opinion. It's for a complete 180-degree turn. Think of a major betrayal of principles. Or a dramatic switch in allegiance. It fits political defections perfectly. It works for drastic changes in personal loyalties. Use it when you want to emphasize the betrayal. Or the opportunistic nature of the switch. It's great for expressing surprise or disapproval. Like when your favorite character suddenly becomes the villain. Oh, the drama!

When NOT To Use It

Don't use tourner casaque for small changes. If you prefer coffee over tea one day, you haven't tourné casaque. It’s too strong for that. Avoid it for genuine evolution of thought. Sometimes people learn and grow. Their opinions change naturally. Tourner casaque implies a lack of conviction. Or a deliberate, possibly sneaky, switch. It’s not for mild disagreements. Or simple preference changes. It’s also too informal for very serious, official contexts. Unless you're trying to be dramatic, of course.

Common Mistakes

Learners sometimes confuse tourner casaque with simply changing one's mind. It’s more than that. It implies a shift in loyalty or principles. Another mistake is using it too lightly. It’s a loaded phrase. Using it for minor things makes it lose its impact. It can also sound overly dramatic. Think of it like calling a small oopsie a major catastrophe. It’s all about the scale of the change.

✗ I don't like this movie anymore, I tourné casaque.

✓ I used to love this movie, but now I think it's terrible. I guess I tourné casaque.

✗ He tourné casaque his opinion on pizza.

✓ He used to hate pineapple on pizza, but now he loves it. He really tourné casaque.

Similar Expressions

  • Changer son fusil d'épaule: This means to change one's approach or strategy. It's less about betrayal and more about adapting tactics.
  • Vendre la mèche: To spill the beans, reveal a secret. Different from changing sides.
  • Être un girouette: To be a weather vane. This is very similar, implying someone who changes their opinion easily based on the wind, often for personal gain. It's a close synonym!
  • Travailler pour le roi de Prusse: To work for free or for naught. Unrelated, but a fun idiom!

Memory Trick

💡

Picture a soldier. He's wearing a bright red jacket. The enemy is winning. He quickly turns his jacket inside out. Now it's blue! He walks over to the enemy lines. He literally tourné casaque. Red to blue, loyalty flipped. Jacket turned, allegiance burned. Easy to remember, right? It’s a visual story. The jacket is the key. It represents your outward allegiance.

Quick FAQ

  • Is it always negative? Mostly, yes. It implies disloyalty or opportunism.
  • Can it be used for opinions? Yes, especially strong, principled opinions.
  • Is it formal? Generally informal or neutral. Not for very serious reports.

使い方のコツ

This idiom is definitely on the informal side, often used to express criticism or surprise at someone's disloyalty or opportunism. While understandable in neutral contexts, avoid it in highly formal settings. Be mindful that it carries a strong negative judgment, so use it when you intend to criticize or highlight a significant betrayal.

🎯

Master the Nuance

Use 'tourner casaque' when you want to sound more sophisticated or when discussing history/politics. Use 'retourner sa veste' in a bar with friends.

⚠️

Don't use an article!

Saying 'tourner LA casaque' is a common mistake that immediately marks you as a learner. Keep it as 'tourner casaque'.

💬

The 'Veste' alternative

If you forget 'casaque', 'veste' is your best friend. It's used 10 times more often in modern French.

例文

12
#1 Texting a friend about a political debate

J'arrive pas à croire que mon député ait `tourné casaque` sur la loi. C'est une trahison !

I can't believe my representative `switched sides` on the law. It's a betrayal!

Expresses disbelief and betrayal regarding a politician's change in stance.

#2 Discussing a movie plot twist with friends

Au début, je pensais que le héros était gentil, mais il a `tourné casaque` à la fin. Quel choc !

At first, I thought the hero was good, but he `switched sides` at the end. What a shock!

Highlights a character's unexpected betrayal or change of allegiance within a narrative.

#3 Talking about a friend's sudden change of hobby

Il était obsédé par le cyclisme, et maintenant il ne parle que de tricot. Il a vraiment `tourné casaque` !

He was obsessed with cycling, and now he only talks about knitting. He really `changed his tune`!

Humorous exaggeration of a friend's drastic shift in interests.

#4 Instagram caption about a career change

Quitter mon ancien job pour lancer ma boîte, c'est un peu `tourner casaque`, mais quelle aventure ! #NewBeginnings #EntrepreneurLife

Leaving my old job to start my own company is a bit like `switching allegiance`, but what an adventure! #NewBeginnings #EntrepreneurLife

Framing a significant career change as a 'switch,' acknowledging the departure from the old path.

#5 WhatsApp message to a friend about a mutual acquaintance

Tu as vu que Sophie soutient maintenant le club rival ? Elle a `tourné casaque` !

Did you see Sophie is now supporting the rival club? She `switched sides`!

Casual gossip about someone changing their sports team loyalty.

#6 Job interview context (describing a past colleague)

Mon ancien collègue a `tourné casaque` en rejoignant la concurrence après avoir eu accès à nos données stratégiques.

My former colleague `betrayed us` by joining the competition after having access to our strategic data.

Used in a professional context to describe a serious breach of loyalty and trust.

Mistake: Using the phrase too literally よくある間違い

✗ J'ai `tourné casaque` hier soir pour aller à la fête.

✗ I `turned jacket` last night to go to the party.

This incorrectly uses the phrase to mean literally turning a jacket, ignoring the figurative meaning of changing allegiance.

Mistake: Using for a minor change よくある間違い

✗ J'ai `tourné casaque` sur mon choix de dessert.

✗ I `switched sides` on my dessert choice.

The phrase is too strong for a minor decision like choosing a dessert; it implies a significant betrayal of principles or loyalty.

#9 Online forum discussion about a game strategy

L'ancien leader de notre guilde a `tourné casaque` et a rejoint l'équipe adverse. C'est pour ça qu'on a perdu.

The former leader of our guild `switched sides` and joined the opposing team. That's why we lost.

Describes a betrayal within a gaming community, impacting the group's performance.

#10 Formal presentation about political shifts

Il est crucial d'analyser les raisons pour lesquelles certains élus `tournent casaque` et modifient leurs affiliations politiques.

It is crucial to analyze the reasons why certain elected officials `change allegiance` and modify their political affiliations.

Used in a more formal setting to discuss political defections, though the phrase itself is informal.

#11 Vlog segment about changing travel plans

On devait aller à Rome, mais on a `tourné casaque` pour Paris ! Changement de programme de dernière minute !

We were supposed to go to Rome, but we `changed our minds` for Paris! Last-minute change of plans!

Used playfully to describe a significant, spontaneous change in plans, emphasizing the 'switch'.

#12 Discussing a friend who changed their entire style

Depuis qu'elle a déménagé, elle a complètement `tourné casaque` niveau style vestimentaire. Je la reconnais à peine !

Since she moved, she has completely `changed her style`. I barely recognize her!

Highlights a dramatic and noticeable transformation in someone's personal style.

自分をテスト

Complétez la phrase avec la forme correcte de l'expression.

Le ministre a ________ casaque pour rejoindre l'opposition.

✓ 正解! ✗ おしい! 正解: tourné

On utilise le passé composé avec l'auxiliaire avoir. Le participe passé 'tourné' ne s'accorde pas ici car 'casaque' est considéré comme faisant partie de l'expression verbale.

Quelle phrase utilise l'expression correctement ?

Choisissez la meilleure option :

✓ 正解! ✗ おしい! 正解: Elle a tourné casaque et a trahi ses amis.

L'option B utilise le sens figuré correct (trahison) et la grammaire correcte (pas d'article).

Associez l'expression à son synonyme ou contexte.

Match the following:

✓ 正解! ✗ おしい! 正解: all

These are all correct pairings of the idiom with its nuances and opposites.

Complétez le dialogue.

Jean: 'Je ne voterai plus pour ce maire.' Paul: 'Pourtant tu l'adorais ! Tu ________ ?'

✓ 正解! ✗ おしい! 正解: tournes casaque

The present tense 'tournes casaque' is used here to question Jean's current change of heart.

🎉 スコア: /4

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練習問題バンク

4 問題
Complétez la phrase avec la forme correcte de l'expression. Fill Blank B1

Le ministre a ________ casaque pour rejoindre l'opposition.

✓ 正解! ✗ おしい! 正解: tourné

On utilise le passé composé avec l'auxiliaire avoir. Le participe passé 'tourné' ne s'accorde pas ici car 'casaque' est considéré comme faisant partie de l'expression verbale.

Quelle phrase utilise l'expression correctement ? Choose B1

Choisissez la meilleure option :

✓ 正解! ✗ おしい! 正解: Elle a tourné casaque et a trahi ses amis.

L'option B utilise le sens figuré correct (trahison) et la grammaire correcte (pas d'article).

Associez l'expression à son synonyme ou contexte. Match B2

左の各項目を右のペアと一致させてください:

✓ 正解! ✗ おしい! 正解: all

These are all correct pairings of the idiom with its nuances and opposites.

Complétez le dialogue. dialogue_completion B1

Jean: 'Je ne voterai plus pour ce maire.' Paul: 'Pourtant tu l'adorais ! Tu ________ ?'

✓ 正解! ✗ おしい! 正解: tournes casaque

The present tense 'tournes casaque' is used here to question Jean's current change of heart.

🎉 スコア: /4

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よくある質問

4 問

It's not vulgar, but it is an accusation. It implies the person is disloyal or opportunistic, so it can be offensive depending on who you say it to.

No, that would be 'se changer' or 'changer de robe'. 'Tourner casaque' is strictly figurative today.

The verb conjugates (Ils tournent), but 'casaque' stays singular: 'Ils tournent casaque'.

Yes, to describe a company that changes its strategy or a partner who joins a competitor.

関連フレーズ

🔄

retourner sa veste

synonym

To turn one's jacket; to change sides.

🔗

faire défection

similar

To defect from a party or army.

🔗

être une girouette

similar

To be a weather vane.

🔗

rester droit dans ses bottes

contrast

To stand firm in one's boots/convictions.

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