French idioms make up a category of language that no dictionary handles well: expressions whose meaning has nothing to do with the words that make them up. In English, we “kick the bucket,” “bite the bullet,” and “spill the beans” without anyone expecting a bucket, a bullet, or beans to appear. French works exactly the same way, and if you try to interpret French idioms literally, you will end up confused at best, and leave with an incorrect interpretation at worst.
Getting comfortable with French idioms matters for two reasons. The first is comprehension. A native French speaker will use these expressions naturally in conversation, in films, and in writing, without flagging them as unusual. The second reason is fluency. Nothing signals confident, natural French quite like using an expression that only makes sense if you actually know the language.
This guide covers three categories of French idiomatic expressions: the avoir idioms that describe physical and emotional states, a set of everyday reactions and opinion phrases, and a collection of cultural expressions that are just fun to know.
Avoir Idioms: When “To Have” Means “To Be”
One of the first things that surprises English speakers learning French is that many expressions describing physical states use the verb avoir (to have) where English would use to be. When you are hungry in French, you “have hunger.” When you are cold, you “have cold.” Once you internalize this setup, these expressions become second nature.
The key is remembering to conjugate avoir for the subject, not être. So it is j’ai faim (“I am hungry”, or literally, “I have hunger”), tu as faim (“you are hungry”), il a faim (“he is hungry”), and so on.
| French | Literal meaning | Actual meaning |
|---|---|---|
| avoir faim | to have hunger | to be hungry |
| avoir soif | to have thirst | to be thirsty |
| avoir chaud | to have hot | to be hot |
| avoir froid | to have cold | to be cold |
| avoir sommeil | to have sleepiness | to be sleepy |
| avoir peur (de) | to have fear (of) | to be afraid (of) |
| avoir raison | to have reason | to be right |
| avoir tort | to have wrong | to be wrong |
| avoir honte (de) | to have shame (of) | to be ashamed (of) |
| avoir l’air (+ adj.) | to have the look | to seem, to look |
| avoir mal à | to have pain in | to have an ache in |
| avoir besoin (de) | to have need (of) | to need |
| avoir envie (de) | to have desire (of) | to feel like, to want |
| avoir … ans | to have … years | to be … years old |
These come up constantly in everyday French, so it is worth drilling them until they feel automatic.
Example sentences with avoir phrases:
J’ai très faim. On peut manger bientôt ? (“I’m very hungry. Can we eat soon?”)
Elle a l’air fatiguée aujourd’hui. (“She looks tired today.”)
Tu as raison. C’était une mauvaise idée. (“You’re right. That was a bad idea.”)
Il a mal à la tête depuis ce matin. (“He has had a headache since this morning.”)
Everyday Reactions and Opinion Phrases
Beyond the avoir expressions, French has a rich vocabulary of short phrases for reacting to things and expressing opinions. These are the phrases that fill in the gaps of real conversation. Knowing them makes you sound like someone who actually speaks French, rather than someone who has learned French from a textbook or course.
| French | Meaning | When to use it |
|---|---|---|
| à mon avis | in my opinion | Introducing your view on something |
| à vrai dire | to tell the truth | Starting an honest or candid remark |
| au contraire | on the contrary | Disagreeing or reversing a claim |
| bien sûr | of course | Agreement or confirming something obvious |
| cela m’est égal | it’s all the same to me | Expressing indifference |
| cela ne fait rien | it doesn’t matter | Dismissing a concern |
| d’accord | agreed, OK | Agreement |
| jamais de la vie | never, out of the question | Strong refusal |
| sans doute | without a doubt | Expressing certainty |
| tant mieux | so much the better | Expressing relief or satisfaction |
| tant pis | too bad | Accepting an unfortunate outcome |
| tout à fait | absolutely, entirely | Strong agreement |
| n’importe | it doesn’t matter | Casual dismissal |
Example sentences with opinions:
À mon avis, il faut partir avant midi. (“In my opinion, we should leave before noon.”)
Tant pis. On essaiera une autre fois. (“Too bad. We’ll try another time.”)
Tu veux du café ? Cela m’est égal. (“Do you want coffee? I don’t mind either way.”)
Jamais de la vie ! Je ne referai pas ça. (“No way! I’m never doing that again.”)
Cultural Expressions: French Idioms Worth Learning
The following expressions are deeply embedded in everyday French speech. Some are colorful, some are puzzling, and all of them are worth knowing.
Avoir le cafard
Literal meaning: to have the cockroach Actual meaning: to feel down, to be in low spirits
J’ai le cafard depuis quelques jours. Je ne sais pas pourquoi. I’ve been feeling low for a few days. I don’t know why.
This is one of those expressions that, once you know it, you will hear everywhere. It is the standard way to describe that particular kind of mild, unfocused sadness.
Poser un lapin à quelqu’un
Literal meaning: to place a rabbit on someone Actual meaning: to stand someone up
Il m’a encore posé un lapin. Je suis tellement agacée. (“He stood me up again. I’m so annoyed.”)
Use this to describe someone who agreed to meet you and simply never showed up.
Casser les pieds à quelqu’un
Literal meaning: to break someone’s feet Actual meaning: to bore or annoy someone intensely
Arrête de casser les pieds à tout le monde avec tes questions. (“Stop annoying everyone with your questions.”)
This one sits somewhere between “you’re boring me to tears” and “you’re driving me crazy.” The context usually makes the nuance clear.
Un coup de foudre
Literal meaning: a bolt of lightning Actual meaning: love at first sight
C’était le coup de foudre. On s’est rencontrés un mardi et on était inséparables dès le lendemain. (“It was love at first sight. We met on a Tuesday and were inseparable by the next day.”)
Coup de foudre also works for non-romantic situations. You can fall instantly in love with a city, a book, or a meal.
Faire la grasse matinée
Literal meaning: to do the fat morning Actual meaning: to sleep in
Le week-end, j’adore faire la grasse matinée jusqu’à dix heures. (“On weekends, I love sleeping in until ten.”)
The “fat” in this expression carries the sense of excess or indulgence, which is a useful clue to its meaning.
En avoir marre (de)
Literal meaning: to have had enough (of) Actual meaning: to be fed up with, to be sick of
J’en ai marre de cette pluie. Quand est-ce que ça va s’arrêter ? (“I’m so sick of this rain. When is it going to stop?”)
This is an informal but extremely common expression. You will hear it in conversation and see it in writing at all registers below formal.
Donner sa langue au chat
Literal meaning: to give your tongue to the cat Actual meaning: to give up guessing
Je donne ma langue au chat. Dis-moi la réponse. (“I give up. Tell me the answer”).
French people say this when playing guessing games or when someone asks them a riddle they cannot solve. It is the equivalent of “I give up, what is it?”
Avoir du pain sur la planche
Literal meaning: to have bread on the board Actual meaning: to have a lot of work to do
On a du pain sur la planche avant la fin de la semaine. (“We have a lot on our plate before the end of the week.”)
A very commonly used work expression. It translates almost directly to the English “a lot on your plate,” which makes it easy to remember.
Il pleut des cordes
Literal meaning: it is raining ropes Actual meaning: it is raining cats and dogs
Prends un parapluie. Il pleut des cordes dehors. (“Take an umbrella. It’s pouring out there.”)
The French equivalent of the classic English idiom. Des cordes (ropes) suggests rain coming down in straight, heavy lines.
Mon oeil
Literal meaning: my eye Actual meaning: yeah right, I don’t believe you
Je n’ai pas touché tes affaires. (“I didn’t touch your things.”)
Mon oeil ! (“Yeah, right!”)
This is typically said with a skeptical or disbelieving tone, sometimes accompanied by pulling down the skin under one eye with a finger. It is blunt but entirely normal in casual speech.
A Note on Learning French Idioms
The tricky thing about idioms is that they need to be absorbed, not memorized. A list like this is a starting point. The expressions above will only start to feel natural once you hear and see them used in context, which means reading in French, watching French films, and, most usefully, having actual conversations with native speakers.
If you want to put these expressions into practice, working with a native French speaker through a platform like italki gives you the kind of real, unscripted conversation where idioms appear naturally. Hearing j’en ai marre said out loud by someone who actually means it lands differently than reading it in a table.
