You can be grammatically perfect in French and still sound wrong. A learner who says J'ai fait une décision, un fort café, un grand public, or je suis chaud has produced sentences in which every word exists, every ending agrees, and every tense is correct — and yet a French ear hears foreigner French immediately. The reason is phraseology: the network of expected pairings that the French lexicon has settled into. A French speaker prend a decision, not fait one. Coffee in French is serré, not fort. The public is large, not grand. And je suis chaud in French means roughly the opposite of "I am hot" in English.
This page introduces the territory. The three pages that follow it — verb-noun collocations, adjective-noun collocations, and frozen expressions — go into the inventories. Here we will define what phraseology is, why it matters at the C-levels, what the main classes are, and how to study it without being overwhelmed.
What is phraseology?
Phraseology is the study of multi-word expressions whose meaning, form, or both are not predictable from the words involved. The term covers a spectrum from completely fixed idioms (passer l'éponge) at one end to fully free combinations (manger une pomme) at the other. In between sit the collocations — word pairs that are not idioms (their meaning is mostly transparent) but are conventional (you cannot freely substitute synonyms without sounding wrong).
A useful way to picture the spectrum:
| Type | Example | Predictability | Substitutable? |
|---|---|---|---|
| Free combination | manger une pomme (eat an apple) | Fully predictable | Yes: manger une poire, manger un fruit |
| Collocation | prendre une décision (make a decision) | Mostly transparent | No: not faire une décision |
| Semi-idiom | faire la grasse matinée (sleep in) | Partly transparent | No: fixed form |
| Idiom | passer l'éponge (let bygones be bygones) | Opaque | No: completely fixed |
Il faut absolument que tu prennes une décision avant vendredi.
You absolutely have to make a decision before Friday.
Bon, on passe l'éponge et on n'en parle plus.
Right, we let bygones be bygones and we don't talk about it anymore.
The two sentences are both perfectly natural French. The first contains a collocation — prendre une décision — whose meaning is roughly compositional but whose verb choice is fixed. The second contains an idiom — passer l'éponge (literally "pass the sponge") — whose meaning has nothing to do with sponges. Both are phraseology; they just sit at different points on the predictability axis.
Why phraseology is a C-level skill
Through B1 and into B2, learners build grammar and vocabulary largely independently. They learn that décision exists and means "decision," and they learn that prendre and faire both exist as verbs roughly meaning "take" and "do/make." Then they translate "make a decision" into faire une décision because faire and make are paired in the bilingual dictionary, and they produce a sentence that is wrong despite containing no individual error.
The B2-to-C1 transition is largely the transition from learning words to learning word combinations. Native speakers store a vast number of multi-word chunks in memory and reach for them rather than constructing each sentence from scratch. At C1 and C2, the difference between learner French and native French is overwhelmingly phraseological. A B2 essay reads as grammatically clean; a C2 essay reads as if a French person wrote it. The distance between the two is collocations.
The main classes
Phraseology in French divides naturally into four large classes, each covered in detail by a dedicated page.
Verb-noun collocations
These are the workhorse of everyday French. A small number of common verbs — faire, prendre, avoir, donner, mettre, pousser — combine with a vast array of nouns to form fixed expressions. Faire attention, prendre rendez-vous, avoir besoin, donner lieu, mettre en garde, pousser un cri. Each of these has a verb that English would not choose. The verb is not free; it is part of the expression.
Il faut prendre rendez-vous chez le dentiste au moins une semaine à l'avance.
You need to make an appointment with the dentist at least a week in advance.
J'ai besoin d'une pause, je n'arrive plus à me concentrer.
I need a break, I can't concentrate anymore.
See phraseology/verb-noun-collocations for a structured inventory.
Adjective-noun collocations
Adjectives in French do not all mean what their dictionary translation suggests when they are paired with specific nouns. Grand can mean tall, great, important, or large; gros can mean fat, big, large, or serious. Which adjective French uses with which noun is a matter of convention, not free choice. Un grand chef is a great chef. Un gros chef would mean a fat chef. Un large public is a wide audience. Un grand public is a different concept — the general public as opposed to a specialist audience. The choice is part of the expression.
C'est un grand chef étoilé qui a ouvert un nouveau restaurant à Lyon.
It's a great Michelin-starred chef who has opened a new restaurant in Lyon.
Le film est destiné au grand public, pas aux spécialistes.
The film is aimed at the general public, not specialists.
See phraseology/adjective-noun-collocations for the systematic treatment.
Frozen expressions and idioms
These are the most opaque end of the spectrum. Avoir le coup de foudre (love at first sight, literally "have the lightning strike"), être au septième ciel (be on cloud nine, literally "be in the seventh heaven"), avoir le cafard (feel down, literally "have the cockroach"), poser un lapin à quelqu'un (stand someone up, literally "place a rabbit on someone"). The literal meaning is irrelevant; the idiom carries a conventional figurative meaning that you must learn as a unit.
Quand ils se sont rencontrés, ça a été le coup de foudre immédiat.
When they met, it was love at first sight, instantly.
J'ai le cafard ces derniers jours, je ne sais pas pourquoi.
I've been feeling down these past few days, I don't know why.
See phraseology/frozen-expressions for the inventory.
Prepositional phraseology
A fourth class — less covered on this page but worth flagging — is the choice of preposition that completes a verb or noun. S'intéresser *à* something, *se souvenir de* something, *avoir besoin de*, *réussir à*. English speakers reach for the wrong preposition constantly because the prepositions do not map. Je pense de toi sounds like a literal translation of "I think of you" but is wrong; the French expression is je pense à toi. See verbs/with-prepositions and expressions/with-y / expressions/with-en for the dedicated treatments.
Why phraseology is largely arbitrary
A common student question is: why does French take a decision rather than make one? Why is the public large rather than big? The honest answer in most cases is: convention. There is no deep logic. Each language has historical, cultural, and metaphorical reasons for its fixed pairings, but synchronically — from the learner's standpoint — they are simply facts to memorize.
This is not unique to French. English has the same arbitrariness in the opposite direction: we make a decision but take a nap, we do homework but make dinner, we have a strong coffee but a heavy smoker. None of these distinctions is logical; all are conventional. A French learner of English has to memorize them the same way an English learner of French has to memorize prendre une décision.
Phraseology and register
Phraseology is tightly bound to register. A familier (casual) French speaker says en avoir marre (be fed up); a soutenu (literary) speaker writing the same idea might use en avoir assez or être excédé. Bosser and travailler mean the same thing but live in different registers, and the nouns they take as objects shift accordingly: bosser comme un dingue (work like crazy) is familier; travailler avec acharnement (work tenaciously) is courant to soutenu.
This means that learning a collocation is also learning its register. When you memorize avoir le cafard, you should also note that it is familier — natural with friends, less suitable in a formal email. When you learn donner lieu à, you should note that it is courant to soutenu — common in journalism and formal writing, slightly stiff in casual conversation. See register/overview for the full register framework.
J'en ai vraiment marre de ce boulot, je vais démissionner.
I'm really fed up with this job, I'm going to quit. — familier; suitable between friends.
Cette mesure a donné lieu à de vifs débats au Parlement.
This measure gave rise to heated debates in Parliament. — courant/journalistic; you would read this in Le Monde.
How to study phraseology
Three practical strategies, in order of importance.
Read widely. Phraseology is acquired by exposure. The more native French you read — newspapers, novels, transcribed dialogues, subtitles — the more collocations you absorb passively. By the time you have read a few hundred pages of French, your sense of which verb a given noun takes becomes intuitive.
Keep a collocation notebook. When you encounter a noun whose verbal partner surprises you (pousser un cri rather than faire un cri), write the whole expression down, not just the noun. Do the same with adjective-noun pairs and prepositional patterns. After a year, this notebook is more valuable than any textbook.
Use a dictionary that lists collocations explicitly. Le Petit Robert and the online Trésor de la langue française both flag the typical companions of each entry. Bilingual dictionaries vary; the Larousse French-English and the Collins-Robert are reasonable, but they often miss the most idiomatic pairings. When in doubt, look up the French noun in a monolingual French dictionary and read the examples carefully.
Common Mistakes
❌ J'ai fait une décision difficile.
Incorrect — French does not *make* decisions; it *takes* them. *Faire* is wrong here even though the English template suggests it.
✅ J'ai pris une décision difficile.
I made a difficult decision.
❌ Le livre est pour un grand public.
Misleading — *grand public* in French is a fixed term meaning 'the general public.' If you mean a *large* audience, the adjective is *large*.
✅ Le livre s'adresse à un large public.
The book is aimed at a wide audience.
❌ Je suis chaud aujourd'hui.
Incorrect for 'I am hot' (temperature) — French uses *avoir chaud*. *Être chaud* in casual register means 'horny' or 'up for it,' which is not what you want to say to a colleague.
✅ J'ai chaud, on peut ouvrir la fenêtre ?
I'm hot, can we open the window?
❌ Je pense de toi tous les jours.
Incorrect — *penser* takes *à* when meaning 'think of someone,' not *de*. (*Penser de* exists but means 'have an opinion about,' as in *Qu'est-ce que tu penses de ce film ?*)
✅ Je pense à toi tous les jours.
I think of you every day.
❌ J'ai un fort mal de tête.
Sounds foreign — French pairs *mal de tête* with the verbal expression *avoir mal*. A bad headache is *un gros mal de tête* or *un mal de tête terrible*. The adjective *fort* does not collocate naturally with *mal de tête*.
✅ J'ai un gros mal de tête depuis ce matin.
I've had a bad headache since this morning.
Key Takeaways
Phraseology is the network of conventional word combinations that distinguishes native French from grammatically correct foreigner French. It spans a spectrum from free combinations through collocations to fully opaque idioms. The three main classes — verb-noun, adjective-noun, and frozen expressions — are covered on dedicated pages and collectively form the bulk of what separates a B2 speaker from a C2 speaker. Most pairings are arbitrary; resist the temptation to seek deep logic, and instead read widely, take notes, and use a monolingual dictionary that lists typical companions. Phraseology is also register-bound: a collocation is never just a pair of words, it is a pair of words at a specific register, and using the right pair at the wrong register is itself a phraseological error. The good news is that collocations, unlike grammar, scale linearly with exposure — every novel and newspaper article you read pushes you closer to native phraseological intuition.
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Start learning French→Related Topics
- Collocations Verbe-NomB2 — The fixed verb-noun pairings that make up the spine of French phraseology — which verb each noun expects (prendre une décision, faire confiance, avoir besoin, donner lieu, pousser un cri), why English speakers reach for the wrong one, and how to internalize the right partner.
- Collocations Adjectif-NomB2 — The fixed adjective-noun pairings that English speakers reliably get wrong — grand vs gros vs large vs long, brillant vs intelligent, beau vs joli — and the principle that intensifiers in French rarely match their English equivalents one to one.
- Expressions FigéesB2 — The fully frozen idioms of French — avoir le coup de foudre, être au septième ciel, poser un lapin, il pleut des cordes — expressions whose meaning cannot be decoded from the parts. The inventory, the register notes, and why literal translation always betrays you here.
- Les Expressions Idiomatiques: OverviewB1 — How French builds everyday meaning from fixed verb-plus-noun collocations with avoir, faire, être, and prendre — and why the article disappears.
- Proverbes FrançaisB2 — The classic French proverbs every educated speaker knows — what they mean, how they're used, and the cultural ideas behind them. Eight proverbs unpacked in depth, with usage notes and the rhythm of fixed phrases.
- Les Registres du FrançaisB1 — French operates on a four-register spectrum from soutenu (literary) through courant (standard) and familier (casual) to populaire (slang). Mastering register — knowing which lexicon, grammar, and syntax fits which situation — is what separates a functional speaker from a fluent one.