French is often presented as an agreement-heavy language: verbs agree with their subjects; adjectives agree with the nouns they modify. And yet some of the most common agreement decisions French speakers make are precisely the ones that seem to “break” the tidy rules learners expect. Why do people hesitate between la plupart est and la plupart sont? Why does gens sometimes behave like a feminine noun and sometimes like a masculine one? Why do you see sympa written both as sympa and sympas? And why has accord de proximité—supposedly an old, marginal pattern—reappeared in contemporary discussions of “good French”?
What looks like chaos is actually a set of highly systematic mechanisms: agreement by meaning (syllepsis), agreement conditioned by position, and competing norms between descriptive usage and prescriptive tradition. Once you recognise these mechanisms, many “exceptions” stop feeling random.
1) Agreement isn’t only grammar—it’s also interpretation
In many sentences, French agreement is straightforward because syntax makes the controller obvious:
- Ces livres sont intéressants.
- Cette idée est intéressante.
But with quantifiers and collective expressions, grammar often forces you to choose between the form (singular) and the meaning (plural). French has a name for this: syllepsis, i.e., agreement made “according to meaning rather than strict syntactic form.” The CNRTL definition describes syllepsis as agreement “not according to grammatical rules … but according to the sense.”
A huge part of “weird agreement” in French is simply syllepsis in action.
2) La plupart: a singular form that almost always behaves as plural
The puzzle: la plupart looks singular (la + a singular noun), but it often triggers plural agreement:
- La plupart sont arrivés.
- La plupart ont compris.
French reference works are remarkably consistent on the core principle: when la plupart is used without a complement, it agrees in the plural because it implicitly refers to a plurality. The OQLF (BDL) states that in that case the verb agrees in the plural, and notes that singular agreement is very rare and linked to older usage.
When la plupart is followed by a complement introduced by de, agreement generally follows the complement by syllepsis:
- La plupart des étudiants sont… (plural complement → plural verb)
- La plupart de la journée est… (singular complement → singular verb)
The Académie française (9th edition) explicitly frames this as sylleptic agreement: “agreement … is always made, by syllepsis, with the complement introduced by de.” The Robert’s usage guide gives the same logic and even comments on a literary option (La plupart s’est trompée) as a stylistically marked variant.
So what should you actually do? A practical, scientifically grounded rule is:
- No complement → plural (La plupart sont…)
- Complement with de → agree with the complement (plural or singular)
If you want structured practice on these “quantity + agreement” patterns in real contexts, ExploreFrench’s online French grammar lessons are a good place to drill them through usage-based examples rather than isolated rules.
3) Gens: agreement conditioned by adjective position
Another classic “French agreement oddity” is gens. It is plural-only, and it can trigger feminine agreement in one position and masculine agreement in another. That sounds bizarre—until you see the system.
The OQLF explains the key pattern clearly: when an adjective whose feminine form differs from its masculine form is placed immediately before gens, the adjective (and related determiners/adjectives placed before) appear in the feminine:
- de bonnes gens
- de vieilles gens
- toutes ces belles et élégantes gens…
But adjectives placed after gens are masculine:
- des gens sympathiques
- ces bonnes gens sont gentils…
Le Robert’s guide summarises this split and adds useful clarifications, including the fact that if gens is followed by a complement like gens de lettres, adjectives tend to remain masculine.
So gens is not “randomly” masculine or feminine. It behaves like a noun whose agreement can be triggered by a local configuration: adjective before vs after. This is a genuine reminder that agreement is not only about the noun’s inherent gender; it can be about the grammar of the whole phrase.
4) Sympa vs sympas: spelling norms vs the logic of regular plural
Now to the deceptively simple question: should you write des gens sympa or des gens sympas?
Because sympa is an apocope (a shortened form) of sympathique, some sources historically treated it as potentially invariable. But modern standardisation tends to favour regular plural formation, i.e., adding -s.
A strong, practical reference here is the OQLF page on orthographic rectifications and preference rules: when there is a choice between an invariable and a variable form, it recommends the regular plural, and it explicitly lists sympa → sympas.
In other words, if your goal is clear standard written French, sympas is the safest default in plural contexts:
- des gens sympas
- des filles sympas
- des voisins sympas
This is not only about correctness—it’s also about readability and predictability. The spelling sympas makes agreement visible, and French writing often values visible grammatical marking even when speech does not.
5) Proximity agreement: “old rule,” modern reality
Proximity agreement (accord de proximité) is usually presented in school as marginal or “incorrect,” but historical and corpus-based research complicates that story.
Definition: proximity agreement means agreeing an adjective (and sometimes other elements) with the closest noun in a coordinated phrase, rather than defaulting to a masculine plural “covers all” pattern.
For instance, in coordination like:
- certaines régions et départements
The feminine plural determiner certaines agrees with the nearest noun régions; a masculine form (certains régions…) is not acceptable. Modern grammars note that proximity agreement is not only possible but often required in some configurations (especially with determiners and prenominal adjectives).
This is precisely what Anne Abeillé’s corpus-based work argues. In a 2018 study using large corpora (Frantext, FrWaC), Abeillé shows that proximity agreement—often assumed to be lost—remains robust in certain noun phrase coordinations, and the paper frames this with actual data rather than ideology. A later OpenEdition article continues the discussion, stressing that multiple agreement patterns coexist and that proximity agreement is well-attested in contemporary French under specific conditions.
So why do many people still call it “wrong”? Because French grammar has also been shaped by prescriptive traditions that promoted uniform masculine agreement as the default in mixed-gender coordination. Those traditions are historically documentable, and debates about them became especially visible again in discussions around inclusive language.
A neutral linguistic takeaway is:
- Proximity agreement is not an invention of the 21st century; it has deep historical roots and is well documented.
- It is also not universally applicable; its acceptability depends on structure (determiners/prenominal adjectives vs predicate adjectives, human vs non-human referents, and register).
6) Why these “weird agreements” matter for learners
These agreement patterns are more than curiosities. They reveal how French actually works:
- French often agrees with meaning when form and meaning compete (la plupart).
- French can condition agreement by position (gens before vs after).
- French writing tends to standardise variability, favouring regular morphology (sympas).
- French “rules” are not static; corpus research can reveal living patterns that school tradition downplays (proximity agreement).
If you want to turn these insights into fluent, automatic usage, you need repeated exposure and production in context—especially for the spoken/written split (where some forms are highly monitored in writing). ExploreFrench’s French communication practice modules are designed precisely for that kind of contextual training, so you do not just “know the rule,” you know what sounds natural in real interaction.
7) A compact cheat sheet (without pretending it’s the whole story)
- La plupart (no complement): plural verb (La plupart sont…)
- La plupart de + noun: agree with the complement by syllepsis (…des étudiants sont / …de la journée est)
- Gens + adjective before: feminine if the feminine form is distinct (de bonnes gens), with related preposed words also feminine
- Adjectives after gens: masculine (des gens gentils, des gens cultivés)
- Sympa plural: standard written form tends toward sympas
- Proximity agreement: historically grounded, empirically attested in modern corpora in specific structures
Conclusion
French agreement looks “weird” mostly when we expect it to be purely mechanical. In reality, French agreement is a negotiation between syntax, meaning, and social norms—exactly the kind of negotiation that makes a language both stable (you can rely on it) and flexible (it adapts to communicative needs). Once you see the underlying mechanisms—syllepsis, positional conditioning, and competing standards—many notorious agreement puzzles become predictable, and French starts to feel less like a minefield and more like an intelligible system.