B1 Idiom Neutral 2 min read

perdre connaissance

To have work to do

Literally: To lose knowledge

In 15 Seconds

  • Means to faint or lose consciousness physically.
  • More formal and medical than 'tomber dans les pommes'.
  • Uses the verb 'perdre' (to lose) + 'connaissance' (awareness).

Meaning

Actually, there is a misunderstanding in your prompt's translation. 'Perdre connaissance' means to faint or lose consciousness. It is used when someone blacks out due to health, shock, or heat.

Key Examples

3 of 6
1

Reporting an accident

Le conducteur a perdu connaissance après le choc.

The driver lost consciousness after the impact.

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2

Describing heat exhaustion

Il faisait si chaud qu'elle a failli perdre connaissance.

It was so hot that she almost fainted.

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3

At the doctor's office

Est-ce que vous avez déjà perdu connaissance ?

Have you ever lost consciousness?

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Cultural Background

In France, 'le malaise' is a very common social and medical concept. People often say 'je fais un malaise' before they 'perdent connaissance'. It is culturally expected to help someone immediately if they use these terms. In Quebec, you might also hear 'partir au bout de son sang' or simply 'pogner un noir' (informal) for fainting, but 'perdre connaissance' remains the standard formal term used in schools and hospitals. Belgian French uses 'perdre connaissance' identically to France. However, in some regions, 'tomber en faiblesse' is a common regionalism for fainting. In many West African countries, 'perdre connaissance' is used in formal education and media. In local street French (like Nouchi in Ivory Coast), more rhythmic or metaphorical terms might be used, but 'perdre connaissance' is understood by all.

💡

No Article Needed

Remember: it's 'perdre connaissance', not 'perdre LA connaissance'. Adding the article makes it sound like you're losing a specific piece of information.

⚠️

Not for Friends

Don't use this to say you 'lost touch' with a friend. That's 'perdre de vue'.

In 15 Seconds

  • Means to faint or lose consciousness physically.
  • More formal and medical than 'tomber dans les pommes'.
  • Uses the verb 'perdre' (to lose) + 'connaissance' (awareness).

What It Means

Perdre connaissance is the standard way to say someone fainted. It literally translates to 'losing knowledge' or 'losing awareness.' When you use this, you are describing a medical or physical event. You are no longer aware of your surroundings. It is a sudden and involuntary blackout.

How To Use It

You use it just like a normal verb. The subject is the person who fainted. You will often see it in the past tense: il a perdu connaissance. It sounds a bit more clinical than s'évanouir. Think of it as 'losing consciousness' versus 'fainting.' It is very common in news reports or medical contexts.

When To Use It

Use it when describing a serious situation. Maybe someone got too hot at a concert. Perhaps a friend saw a needle and hit the floor. It is perfect for calling emergency services. You can also use it figuratively for extreme shock. Imagine hearing such crazy news that you 'almost' lost it.

When NOT To Use It

Do not use this to say you have work to do. That would be avoir du pain sur la planche. Also, do not use it for falling asleep. If you just took a nap, this phrase is too dramatic. People will think you need an ambulance! Avoid it for 'losing your mind' or 'going crazy' too.

Cultural Background

French people value precise language in medical situations. Perdre connaissance comes from the old idea of 'connaissance' as self-awareness. In the 17th century, 'connaissance' was your connection to the world. Losing it meant your soul or mind temporarily left. It reflects a deep philosophical view of the human body.

Common Variations

You will frequently hear s'évanouir as a direct synonym. In slang, people might say tomber dans les pommes. That literally means 'to fall into the apples.' It sounds much funnier and less scary. If someone is just dizzy, they might say avoir un malaise instead.

Usage Notes

This is a neutral to formal phrase. It is the 'safe' choice for any situation where you need to be clear that someone has blacked out.

💡

No Article Needed

Remember: it's 'perdre connaissance', not 'perdre LA connaissance'. Adding the article makes it sound like you're losing a specific piece of information.

⚠️

Not for Friends

Don't use this to say you 'lost touch' with a friend. That's 'perdre de vue'.

🎯

The Opposite

To say someone woke up, use 'reprendre connaissance'. It's the perfect pair to learn together.

💬

Emergency Calls

If you call 18 or 112 in France, this is the most effective phrase to describe an unconscious person.

Examples

6
#1 Reporting an accident
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 13.255A23.931 23.931 0 0112 15c-3.183 0-6.22-.62-9-1.745M16 6V4a2 2 0 00-2-2h-4a2 2 0 00-2 2v2m4 6h.01M5 20h14a2 2 0 002-2V8a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"/></svg>

Le conducteur a perdu connaissance après le choc.

The driver lost consciousness after the impact.

Standard use in a serious reporting context.

#2 Describing heat exhaustion
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14.828 14.828a4 4 0 01-5.656 0M9 10h.01M15 10h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>

Il faisait si chaud qu'elle a failli perdre connaissance.

It was so hot that she almost fainted.

Describes a physical reaction to the environment.

#3 At the doctor's office
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 13.255A23.931 23.931 0 0112 15c-3.183 0-6.22-.62-9-1.745M16 6V4a2 2 0 00-2-2h-4a2 2 0 00-2 2v2m4 6h.01M5 20h14a2 2 0 002-2V8a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"/></svg>

Est-ce que vous avez déjà perdu connaissance ?

Have you ever lost consciousness?

A typical medical history question.

#4 Reacting to shocking news
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14.828 14.828a4 4 0 01-5.656 0M9 10h.01M15 10h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>

J'ai cru que j'allais perdre connaissance en voyant la facture !

I thought I was going to faint when I saw the bill!

A humorous, hyperbolic way to show shock.

#5 Texting a friend about a scare
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Mon frère a perdu connaissance d'un coup, j'ai eu trop peur.

My brother suddenly fainted, I was so scared.

Conveys a sense of urgency and emotion.

#6 Explaining a gap in memory
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14.828 14.828a4 4 0 01-5.656 0M9 10h.01M15 10h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>

Je ne me souviens de rien, j'ai perdu connaissance.

I don't remember anything, I lost consciousness.

Explains why someone lacks information about an event.

Test Yourself

Complete the sentence with the correct form of 'perdre connaissance'.

Hier, à cause de la canicule, mon voisin a ________.

✓ Correct! ✗ Not quite. Correct answer: perdu connaissance

In the passé composé, we use 'avoir' + 'perdu' and no article before 'connaissance'.

Which sentence is the most appropriate for a medical report?

Comment décrire un patient qui s'est évanoui ?

✓ Correct! ✗ Not quite. Correct answer: Le patient a perdu connaissance.

'Perdre connaissance' is the standard neutral/formal term suitable for medical contexts.

Match the register with the correct phrase.

Registers: 1. Informal, 2. Neutral, 3. Medical

✓ Correct! ✗ Not quite. Correct answer: 1-B, 2-C, 3-A

Tomber dans les pommes is informal, Perdre connaissance is neutral, and Syncope is medical.

Fill in the missing line in this emergency call.

Appelant: 'Vite, mon ami est au sol !' / Opérateur: 'Est-ce qu'il respire ? Est-ce qu'il a ________ ?'

✓ Correct! ✗ Not quite. Correct answer: perdu connaissance

The operator is asking if the person is unconscious.

In which situation would you NOT use 'perdre connaissance'?

Situations:

✓ Correct! ✗ Not quite. Correct answer: Someone stops talking to a friend for 5 years.

For losing touch with a friend, you use 'perdre de vue', not 'perdre connaissance'.

🎉 Score: /5

Visual Learning Aids

Perdre Connaissance vs. Perdre de Vue

Perdre Connaissance
Fainting Medical event
Perdre de Vue
Losing touch Social event

Causes of Perdre Connaissance

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Physical

  • Chaleur
  • Faim
  • Fatigue
😱

Emotional

  • Choc
  • Peur
  • Stress

Practice Bank

5 exercises
Complete the sentence with the correct form of 'perdre connaissance'. Fill Blank B1

Hier, à cause de la canicule, mon voisin a ________.

✓ Correct! ✗ Not quite. Correct answer: perdu connaissance

In the passé composé, we use 'avoir' + 'perdu' and no article before 'connaissance'.

Which sentence is the most appropriate for a medical report? Choose B1

Comment décrire un patient qui s'est évanoui ?

✓ Correct! ✗ Not quite. Correct answer: Le patient a perdu connaissance.

'Perdre connaissance' is the standard neutral/formal term suitable for medical contexts.

Match the register with the correct phrase. Match B1

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer: 1-B, 2-C, 3-A

Tomber dans les pommes is informal, Perdre connaissance is neutral, and Syncope is medical.

Fill in the missing line in this emergency call. dialogue_completion A2

Appelant: 'Vite, mon ami est au sol !' / Opérateur: 'Est-ce qu'il respire ? Est-ce qu'il a ________ ?'

✓ Correct! ✗ Not quite. Correct answer: perdu connaissance

The operator is asking if the person is unconscious.

In which situation would you NOT use 'perdre connaissance'? situation_matching B1

Situations:

✓ Correct! ✗ Not quite. Correct answer: Someone stops talking to a friend for 5 years.

For losing touch with a friend, you use 'perdre de vue', not 'perdre connaissance'.

🎉 Score: /5

Frequently Asked Questions

14 questions

Yes, they are synonyms. 'Perdre connaissance' is slightly more formal/standard, while 's'évanouir' is more literary.

No. This would mean 'I lost my acquaintance' (a person you know). For fainting, never use a possessive or article.

The most common informal version is 'tomber dans les pommes'.

No, losing consciousness is an involuntary medical event, not natural sleep.

Usually, 'perdre connaissance' refers to a brief faint. For a coma, we say 'être dans le coma' or 'perdre conscience' in a deep sense.

You say 'J'ai failli perdre connaissance'.

It is 'perdre connaissance' (no article).

It always takes 'avoir': 'Il a perdu connaissance'.

Yes, if a dog faints, you can say 'Le chien a perdu connaissance'.

Very common. It's the standard term for reporting accidents or health issues of public figures.

A 'malaise' is feeling sick; 'perdre connaissance' is specifically the moment you black out.

Yes, frequently for concussions or exhaustion.

Only if you are literally talking about a medical event. It's a neutral, professional term.

Yes, 'tomber dans les vapes' or 'tourner de l'œil'.

Related Phrases

🔄

tomber dans les pommes

synonym

To faint (informal)

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s'évanouir

synonym

To faint (neutral/literary)

🔗

faire un malaise

similar

To feel unwell/faint

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reprendre connaissance

contrast

To regain consciousness

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perdre le fil

builds on

To lose the thread (of a conversation)

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perdre conscience

similar

To lose consciousness (moral/deep)

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