Forming adverbs with -ment (formation of adverbs using the suffix -ment) - French Grammar

Formation of Adverbs (-ment)

What does this mean?

An adverb modifies a verb, an adjective, another adverb, or a whole clause. In French, many adverbs are formed by adding the suffix -ment to an adjective. The result is an adverb that often expresses manner (how something is done), degree (how much), or frequency (how often).

Examples:
- lent -> lentement (slow -> slowly)
- Elle marche lentement. — She walks slowly.
- heureux -> heureusement (happy -> fortunately)
- Heureusement, il a retrouvé ses clés. — Fortunately, he found his keys.

When do I use adverbs formed with -ment?

To describe how an action is done: Il parle doucement. — He speaks softly.
To modify an adjective or another adverb: C'est extrêmement important. — It's extremely important.
To comment on a whole sentence (sentence adverbs): Heureusement, nous sommes partis. — Luckily, we left.

Note: Not all adverbs end in -ment (e.g., bien, mal, vite, très). But -ment is one of the most productive and regular ways to make adverbs from adjectives.

How do I form adverbs with -ment?

Main idea: In most cases you start from the adjective and add -ment. Which form of the adjective you use (feminine or masculine) depends on the adjective.

1) Most common rule — add -ment to the feminine singular form
- Take the adjective's feminine form, then add -ment.
- Examples:
- actif -> active -> activement — Il participe activement. — He participates actively.
- profond -> profonde -> profondément — Elle est profondément touchée. — She is deeply moved.
- sérieux -> sérieuse -> sérieusement — Il travaille sérieusement. — He studies seriously.
- calme -> calme -> calmement — Parlez calmement. — Speak calmly.
- rapide -> rapide -> rapidement — Il a rapidement répondu. — He replied quickly.

2) If the masculine form ends with a vowel, add -ment to the masculine form
- When the masculine adjective already ends in a vowel (a, e, i, o, u, y), the adverb is usually formed from the masculine + -ment.
- Examples:
- vrai -> vraiment — C'est vraiment incroyable. — That's really incredible.
- absolu -> absolument — C'est absolument nécessaire. — It is absolutely necessary.
- poli -> poliment — Parlez poliment, s'il vous plaît. — Please speak politely.
- public -> publiquement — Il s'exprime publiquement. — He speaks publicly.

3) Adjectives ending in -ant or -ent
- Adjectives that end in -ant form adverbs in -amment (drop -ant, add -amment).
- Adjectives that end in -ent form adverbs in -emment (drop -ent, add -emment).
- Examples (-ant -> -amment):
- constant -> constamment — Il est constamment en retard. — He is constantly late.
- brillant -> brillamment — Elle a brillamment réussi l'examen. — She passed the exam brilliantly.
- suffisant -> suffisamment — Bois suffisamment d'eau. — Drink enough water.
- Examples (-ent -> -emment):
- récent -> récemment — J'ai récemment déménagé. — I recently moved.
- patient -> patiemment — Elle attend patiemment. — She waits patiently.
- violent -> violemment — Ils ont violemment protesté. — They protested violently.

4) Orthographic changes and other patterns
- Some adjectives change their stem slightly when forming the adverb.
- vif -> vivement — Il a réagi vivement. — He reacted strongly.
- bref -> brièvement — Expliquez brièvement. — Explain briefly.
- vrai -> vraiment (vowel rule above) — Il est vraiment heureux.
- profond -> profondément (feminine + ment, note the double consonant in pronunciation)
- Adjectives ending in -ique, -able, -ible, -eux, -if often follow the feminine + -ment rule, but the exact spelled result depends on the adjective:
- politique -> politiquement — Le débat est politiquement important. — The debate is politically important.
- terrible -> terriblement — C'était terriblement cher. — It was terribly expensive.
- curieux -> curieuse -> curieusement — Il a réagi curieusement. — He reacted curiously.

Spelling notes and accents

Double m: When -ant or -ent becomes -amment or -emment, you will usually see a double m (brillamment, récemment).
Accents may move or appear in adverb formation: récent -> récemment (accent on first e preserved/adjusted).
Watch for stem changes (vif -> vivement, bref -> brièvement). These are memorized exceptions.

Irregular adverbs and important exceptions

Some common adverbs do not follow the -ment formation or are entirely irregular:

bon/bonne -> bien — Tu as bien travaillé. — You worked well.
mauvais -> mal — Il se sent mal. — He feels bad.
meilleur -> mieux — Tu chantes mieux aujourd'hui. — You sing better today.
long -> longtemps — Il a longtemps attendu. — He waited a long time. (not *longment)
vite (from vif) — Il court vite. — He runs fast. (Note: both vite and vivement exist; they have different senses: vite = quickly, vivement = forcefully/keenly.)

Also: Some adjectives have two possible adverbial forms with different meanings or uses. Example:
- vif -> vite (common, quick) vs vivement (strongly; lively). — Il est vite parti. / Il a vivement critiqué.

Where do -ment adverbs go in a sentence?

After a simple verb (present, imparfait, future):
Il marche lentement. — He walks slowly.
Nous étudions sérieusement. — We study seriously.
With compound tenses (passé composé, plus-que-parfait), placement can vary:
Many -ment adverbs come after the past participle: Elle a répondu rapidement. — She answered quickly.
Short, frequent adverbs (souvent, bien, déjà, encore) often go between the auxiliary and the past participle: Il a souvent parlé. — He has often spoken.
Some writers place a -ment adverb between auxiliary and participle for emphasis: Il a malheureusement oublié. — He unfortunately forgot. Both positions may be acceptable depending on emphasis and the adverb.
Before an adjective or another adverb (to modify them):
C'est extrêmement dangereux. — It's extremely dangerous.
Elle est profondément très touchée. — (More natural: Elle est profondément touchée.)
Before an infinitive: the adverb usually follows the infinitive or precedes it depending on meaning: Il a décidé de partir immédiatement. / Il commence à parler lentement.

Common mistakes to avoid

Confusing -amment and -emment: Remember: adjective ending -ant -> -amment; ending -ent -> -emment.
Incorrect: *récamment. Correct: récemment.
Incorrect: *brillament. Correct: brillamment.
Assuming you always add -ment to the masculine form. Often you must use the feminine (heureux -> heureusement from heureuse).
Creating adverbs where they don't exist: bon -> *bonnement is wrong; correct is bien.
Confusing present-participle/adjective in -ant with adverb in -amment. Example: "intéressant" is an adjective (interesting); the adverb is "intéressamment" or (more commonly) "de façon intéressante" depending on meaning. Usually, use the -ment form when you mean "in an X way."
Placement errors in compound tenses: avoid putting the adverb in an unnatural place (e.g., Je ai *rapidement mangé is wrong; correct: Je'ai rapidement mangé or, better: J'ai rapidement mangé / J'ai mangé rapidement).

Comprehensive examples by formation type

Feminine + -ment:

heureusement — Heureusement, tout s'est bien passé. — Fortunately, everything went well.
lentement — Le bébé dort lentement. — The baby sleeps slowly. (contextual)
calmement — Nous avons discuté calmement. — We discussed calmly.
activement — Elle participe activement à ce projet. — She actively participates in this project.

Masculine ends with a vowel -> masculine + -ment:
- vraiment — C'est vraiment délicieux. — It's really delicious.
- absolument — Tu as absolument raison. — You are absolutely right.
- poliment — Il a poliment refusé. — He politely refused.

-ant -> -amment:
- constamment — Il est constamment occupé. — He is constantly busy.
- brillamment — Elle a brillamment gagné la compétition. — She brilliantly won the competition.
- élégamment — Il s'habille élégamment. — He dresses elegantly.

-ent -> -emment:
- récemment — J'ai récemment commencé un nouveau travail. — I recently started a new job.
- patiemment — Attends patiemment ton tour. — Wait patiently for your turn.
- fréquemment — Ils voyagent fréquemment en train. — They frequently travel by train.

Irregular or special forms:
- bien (from bon) — Tu as bien fait. — You did well.
- mal (from mauvais) — Tout va mal aujourd'hui. — Everything is going badly today.
- longtemps (from long) — Il a longtemps hésité. — He hesitated for a long time.
- brièvement (from bref) — Parlez brièvement. — Speak briefly.
- vivement (from vif) — Il a vivement réagi. — He reacted strongly.

Glossary (short)

Adverb: a word that modifies verbs, adjectives, other adverbs, or whole clauses (how, when, where, how often, to what degree).
Feminine form: the adjective form that agrees with a feminine noun (e.g., heureux -> heureuse).
Suffix: an ending added to a word to change its meaning or grammatical function (here: -ment).
Present participle: form in -ant used as verb adjective or gerund (e.g., parlant). Not the same as an adverb in -amment.
Auxiliary verb: helper verb used in compound tenses (avoir, être).

Summary — quick rules to remember

Most adverbs in -ment come from the adjective. Usually add -ment to the feminine singular (heureuse -> heureusement).
If the masculine ends in a vowel, form the adverb from the masculine + -ment (vrai -> vraiment).
If the adjective ends in -ant or -ent, change to -amment or -emment (constant -> constamment; récent -> récemment).
Memorize common irregular adverbs (bien, mal, vite, longtemps) and watch for stem changes (bref -> brièvement, vif -> vivement).
Adverb placement: after the verb in simple tenses; in compound tenses usually after the participle, but position can vary with emphasis and adverb type.

Practice by noticing adverbs in texts and asking: which adjective does it come from, and is it formed from the masculine or feminine form? Over time, exceptions and irregulars become natural.