French Nominalisation: When a Verb or an Adjective Becomes a Noun

French has two neat tricks for minting a new noun without adding a single suffix: freeze an infinitive, or freeze an adjective in its masculine singular form, and put an article in front. Both processes are called nominalisation, and both sit on the AQA GCSE French specification. Neither needs a special ending, a change of spelling, or any machinery beyond the article itself - which is exactly why English speakers tend to miss it. The word looks like an ordinary verb or an ordinary adjective right up until the article in front of it tells you it has quietly become something else. This page covers each pattern in turn, then the one rule that catches almost every English speaker out - the capital letter.

Infinitives used as nouns

Any French infinitive can, in principle, be pressed into service as a noun, and a handful have done so completely, ending up as some of the commonest nouns in the language. The noun this process makes is always masculine, whatever the verb's own meaning:

• déjeuner (to have lunch) -> le déjeuner (lunch, the meal)
• dîner (to have dinner) -> le dîner (dinner)
• sourire (to smile) -> le sourire (a smile)
• rire (to laugh) -> le rire (laughter)
• pouvoir (to be able to) -> le pouvoir (power)
• devoir (to have to) -> le devoir (duty), les devoirs (homework)
• goûter (to taste) -> le goûter (an afternoon snack)
• lever (to raise) -> le lever (the getting-up, as in le lever du soleil, sunrise)
• coucher (to put to bed) -> le coucher (as in le coucher du soleil, sunset)

Le déjeuner est à midi. (Lunch is at noon.) Elle m'a fait un grand sourire. (She gave me a big smile.) Le président a beaucoup de pouvoir. (The president has a lot of power.) Notice that devoir produces two related but distinct nouns depending on number: the singular le devoir keeps the abstract sense of duty or obligation, while the almost-always-plural les devoirs is the everyday word for homework - faire ses devoirs (to do one's homework).

This is not a rule you apply freely to any infinitive you like in ordinary writing - these particular nouns are fixed, dictionary words. But recognising the pattern explains why so many everyday nouns look exactly like a verb with le stuck on the front, and it is the same logic behind the English gerund ("the meeting", "a good showing") even though the mechanics differ: English adds -ing, French simply freezes the infinitive as it already stands.

Compound infinitive-nouns: le savoir-faire, le savoir-vivre

The pattern goes further than single verbs. French has bolted whole verb phrases together into compound nouns, several of which English borrowed wholesale rather than translate:

• le savoir-faire (literally "the knowing-how-to-do") - know-how, practical skill
• le savoir-vivre - good manners, the art of social behaviour
• le laisser-faire (literally "letting do") - the hands-off economic and political principle; English borrowed it with the imperative instead, as laissez-faire

Elle a beaucoup de savoir-faire dans son travail. (She has a lot of know-how in her job.) These compounds prove the same point twice over: French nominalises verbs constantly enough that entire idiomatic phrases have crystallised into single, dictionary-standard nouns.

Definite article + adjective forming a noun

The second pattern puts an article in front of an adjective and lets it name a person, a group or a thing instead of describing one:

• vieux (old) -> le vieux (the old man; mon vieux is an informal "mate" or "old chap")
• beau (beautiful) -> le beau (the beautiful, beauty in the abstract; also the idiom faire le beau, to show off)
• jeune (young) -> les jeunes (young people)
• riche (rich) -> les riches (the rich)
• pauvre (poor) -> les pauvres (the poor)
• rouge (red) -> le rouge (red, the colour, or informally red wine)

Le vieux du village raconte toujours les mêmes histoires. (The old man of the village always tells the same stories.) Les jeunes passent souvent plus de temps sur leur téléphone. (Young people often spend more time on their phone.) Dans ce pays, les riches paient plus d'impôts. (In this country, the rich pay more tax.)

The noun keeps the gender and number of whoever it refers to: le vieux (the old man), la vieille (the old woman), les vieux (old people, a mixed group taking the masculine plural), exactly like the Spanish and Italian equivalents of this same pattern. Only when it names an abstract quality or a thing (le beau, le rouge) is it fixed in the masculine singular.

When the nominalised adjective drifts to a new meaning

A few of these frozen adjectives have wandered away from their literal sense entirely, which is worth knowing so you are not caught out by a colour word that no longer means a colour:

• un bleu (literally "a blue") - a bruise, or informally a rookie, a new recruit with no experience yet
• un rouge (literally "a red") - informally, a glass of red wine
• le mieux and le pire - "the best (thing)" and "the worst (thing)", the nominalised forms of bien (via mieux) and mauvais (via pire) rather than a plain adjective: c'est pour le mieux (it's for the best), le pire, c'est que... (the worst thing is that...)

Il a un gros bleu sur la jambe. (He has a big bruise on his leg.) Le mieux, c'est d'attendre demain. (The best thing is to wait until tomorrow.) These show that once an adjective has been nominalised, the resulting noun is free to specialise in meaning exactly like any other noun in the language.

The most useful case: languages

The single most useful instance of adjective-to-noun nominalisation is languages. French has no separate word for "the French language" - it simply nominalises the nationality adjective:

• français (French) -> le français (French, the language)
• anglais (English) -> l'anglais (English, the language)
• espagnol (Spanish) -> l'espagnol (Spanish, the language)
• allemand (German) -> l'allemand (German, the language)

Le français est une belle langue. (French is a beautiful language.) J'apprends l'espagnol depuis deux ans. (I've been learning Spanish for two years.) Elle parle bien l'allemand. (She speaks German well.) - when an adverb such as bien comes between the verb and the language, the article usually comes back, though elle parle bien allemand is heard too. The general rule: keep the article when the language is a subject or object, and usually drop it directly after parler - je parle français is the everyday form, while je parle le français is also correct and slightly more formal.

The capital-letter rule

This is where French draws a line English does not, and it catches learners going in both directions:

Un Français habite à côté de chez moi. (A Frenchman lives next door to me.) - capital F, because this names a person by nationality. Il parle français couramment. (He speaks French fluently.) - lower case, the language. C'est une ville française. (It's a French town.) - lower case, the adjective. English capitalises "French" in all three uses; French capitalises only the first.

GCSE spec note

Both patterns - infinitives as nouns, and articles plus adjectives forming nouns, including the language use - are on the AQA GCSE French specification at Foundation and Higher tier. Examiners particularly reward candidates who use le français / l'anglais / l'espagnol correctly with the article rules above, since this construction turns up constantly in writing about school subjects and identity.

Common mistakes English speakers make

Capitalising the language. "Le Français" with a capital F is wrong when you mean the language - save the capital for the person: un Français.

Dropping the article where it should stay. Le français est difficile keeps the article because français is the subject; only directly after parler does it usually drop: je parle français.

Forgetting that a nominalised adjective still agrees. An old woman is la vieille, not "la vieux"; a young woman is une jeune. The noun follows the person it names, and a mixed group takes the masculine plural (les vieux, les jeunes).

Confusing le devoir and les devoirs. The singular is duty, in the abstract; the plural, used almost exclusively of school, is homework. Context, not spelling, tells them apart.

What to do this week

1. Learn le déjeuner, le dîner, le sourire and le pouvoir as ordinary vocabulary first - most learners meet them long before anyone points out they used to be verbs.
2. Practise the language pattern out loud: je parle français, then le français est difficile, so your ear catches the article appearing and disappearing in the same breath.
3. Write one sentence using un Français (capital, the person) and one using le français (lower case, the language), side by side, until the contrast feels automatic rather than something you have to check.
4. Next time you meet an unfamiliar noun that looks exactly like an infinitive or an adjective with le in front, assume nominalisation before you reach for a dictionary.

See also

• French cognate patterns - the endings that turn English words into French ones, a different kind of word-building.
• French adjective agreement - the ordinary agreement rules that switch off the moment an adjective nominalises.
• French articles - le/la/les and when French keeps or drops them, including after parler.