The relational adjectives serve to establish a link between a noun and an idea of provenance, domain, belonging, or use. They do not describe a personal quality like great, calm or interesting ; they classify the object into a category. In une politique économique, économique links the policy to the economy. In un musée national, national indicates a relation to the nation. If the adjective disappears, the meaning becomes more general. If we replace it, the relation changes completely. These forms often work with noun groups close to those studied in Adjectifs qualificatifs, but their role is to connect, not judge.

Domain and origin link

Idea
They express a link with a domain without adding an opinion.
They can indicate a geographical origin.
They can mark membership in a category.
They also serve to specify a use or a function.

Many relational adjectives come from a noun or a place. The base noun gives the main idea, then an ending forms the adjective: France gives français, musique gives musical, histoire gives historique. Other forms change more and remain less transparent: ville gives urbain, terre gives terrestre. The base can be a common noun, a proper noun or a toponym. We find this process in words like maritime, politique, parisien, scolaire. These formations belong to the same system as Formation de l'Adjectif, but here the main value is the relation with a name of origin rather than a quality.

politiquefraternelcélestemusicalscolaireroyalmédicalmarin

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Qui a un rapport avec l écoleQui a un rapport avec le cielQui a un rapport avec la vie publiqueQui a un rapport avec le roiQui a un rapport avec la médecineQui a un rapport avec les frères et les sœursQui a un rapport avec la merQui a un rapport avec la musique

Source nouns of relational adjectives

Word	Definition
médical	Containing a relation to medicine.
musical	Containing a relation to music.
politique	Containing a relation to public life.
céleste	Containing a relation to the sky.
marin	Containing a relation to the sea.
scolaire	Containing a relation to school.
fraternel	Containing a relation to brothers and sisters.
royal	Containing a relation to the king.

Scramble

The relational adjective most often comes after the noun. We say une loi fiscale, un roman policier, un tissu synthétique. The noun comes first, then the adjective specifies the domain, the type, or the belonging. The noun + adjective structure is the normal form, especially when the adjective classifies the object into a precise category. In front of the noun, these adjectives become rare and often change meaning or style. With un français écrivain, the adjective no longer plays the same role as with la langue française. For the general position of adjectives, see Position de l'adjectif.

Common placement after the noun

Usage	Explanation
Noun complement	We often place the relational adjective after the noun it specifies.
Expression of specialty	This placement helps show that the link is descriptive and not evaluative.
Noun plus precise idea	We keep this position when the noun remains the information center.
Avoid subjective reading	The position after the noun avoids the adjective appearing subjective or affective.

Like all adjectives, relational adjectives agree with the noun they modify. We say une revue scientifique, un rapport scientifique, des revues scientifiques. The feminine and the plural follow the usual form of the adjective: français becomes française, municipal becomes municipale, national becomes nationale. The noun governed by the adjective thus fixes the gender and the number. This agreement works in the same way as in Accord de l'adjectif. In an expression like les autorités locales, locales agrees with autorités, not with an abstract idea of locality.

Agreement of relational adjectives

Idea
They take the gender of the noun they accompany.
They take the number of the noun they accompany.
The feminine often follows the regular form of adjectives.
The plural keeps the same base with the number marker.

Some relational adjectives form very stable groups with a noun. Politique fiscale, langue française, droit civil, énergie solaire are sets where the adjective defines a precise domain. In these groups, the adjective may take a technical sense that the context alone does not always give. Une question sociale does not mean only a question “related to society”; depending on the context, it refers to poverty, work, or inequalities. Un service public designates a service dependent on the State or a local authority. These word associations are common with the Adjectifs démonstratifs and the noun groups studied in Articles définis and Articles indéfinis, because the relational adjective specifies exactly what kind of thing is named.

Fixed expressions with technical meaning

Usage	Explanation
Administrative expression	In certain groups, the relational adjective forms a fixed expression.
Linguistic domain	With certain nouns, the meaning becomes technical and very precise.
Specialized formula	The group can function as an almost official term.
Institutional meaning	In these usages, the context fixes the meaning more than the adjective alone.

Some relational adjectives have an irregular or less transparent form. Amazone gives amazonien, Europe gives européen, Paris gives parisien. Others come from old derivatives and do not form easily from the starting noun: végétal, marin, hébraïque. Orally, a construction with de and a simpler adjective is sometimes more natural: une maison de bois instead of une maison boisée depending on the intended meaning, or un problème de santé instead of a more technical adjective. The de construction keeps the link between the two nouns and often replaces a relational adjective when the context is more common. These sense links also serve to prepare the Pronoms Relatifs, which precisely restate an element already identified in the sentence.

piscinede luxeaérienéquestrede bureaude campagnede famillefrançais

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Qui a un rapport avec le chevalTournure fréquente pour dire lié à la familleQui a un rapport avec l air ou le cielTournure qui indique un niveau très soigné ou plus prestigieuxQui a un rapport avec la baignade dans un usage familier rare ou insoliteTournure courante pour dire destiné au travail de bureauDans certains contextes, il peut servir de forme courante et très visibleTournure qui remplace souvent un adjectif plus simple à l oral

Less transparent forms and close constructions

Word	Definition
équestre	Containing a relation to horses.
piscine	Containing a relation to swimming in a familiar, rare, or unusual use.
aérien	Containing a relation to air or sky.
de campagne	Turn of phrase that often replaces a simpler adjective in speech.
de famille	Common tournure to mean related to family.
de bureau	Common tournure to mean intended for office work.
de luxe	Turn of phrase indicating a very refined or more prestigious level.
français	In some contexts, it can serve as a common and very visible form.

Scramble