Intensity: archi-, hyper-, -issime

Intensité: archi-, hyper-, -issime

Renforcez une idée avec archi-, hyper-, super-, ultra- ou -issime : archiplein, hyperutile, richissime.

(Strengthen an idea with archi-, hyper-, super-, ultra- or -issime: archiplein, hyperutile, richissime.)

Teacher explanation

What you are doing here: boosting an adjective (very → extremely)

French often intensifies an adjective with:

Prefixes: archi-, hyper-, super-, ultra-
A suffix: -issime

They are common in speech and informal professional contexts (emails, meetings). Use them sparingly in very formal writing.

Spelling: do you write it together, with a space, or with a hyphen?

In contemporary French, these intensifiers are most often written attached to the adjective:

archi + adj → archiplein, archifatigué, archibas
hyper + adj → hyperstressé, hyperutile
ultra + adj → ultraperformant(e)
super + adj → superrapide, superabîmé(e)

So in your exercises, prefer:

✅ superrapide / ~~super rapide~~ / ~~super-rapide~~
✅ ultraperformante / ~~ultra performante~~ / ~~ultra-performante~~

Gender/number still follow the adjective. The prefix does not change:

un service hyper efficace / une équipe hyper efficace
des clients super contents / des clientes super contentes

Meaning differences: archi- vs hyper- vs super- vs ultra-

Form	Typical feel	Natural example
archi-	very strong, often emotional / spoken	Je suis archi crevé après la réunion.
hyper-	very strong, sometimes “over-” / modern tone	Je suis hyper stressé avant la présentation.
super-	common, everyday “really”	Le produit est super fiable.
ultra-	high intensity, often technical / performance	Une batterie ultraperformante.

Note: you may also hear them as separate words in speech (super + adjective), but your course focuses on the attached form.

-issime: how it works (and what changes)

-issime is added to an adjective to mean “extremely”.

riche → richissime
rare → rarissime
cher → chérissime (often ironic or affectionate)

Agreement (gender/number) is usually regular:

un quartier richissime / une famille richissime
des investisseurs richissimes

Practical tip: if you are unsure, use a prefix instead (hyper/super/ultra + adjective). It is often safer.

Don’t intensify “absolute” adjectives

Some adjectives already express an absolute idea. In standard French, you avoid intensifying them:

unique → ✅ unique / ~~uniqueissime~~
excellent → ✅ excellent / ~~excellentissime~~
magnifique → ✅ magnifique / ~~magnifiqueissime~~

In real life you might hear exaggerations, but for B2 accuracy, avoid them.

Key trap: “ne… que” / “le seul, l’unique” + relative clause → often subjunctive

When you say someone/something is the only one, French often treats it like a selection/judgment, so the verb in the relative clause can go to the subjunctive.

Structure	Correct example	Why
ne… que + relative clause	Il n’y a que toi qui aies des problèmes.	“Only you” → singled out
le seul / l’unique + relative clause	C’est le seul garage qui fasse la vidange.	“The only one that…” → selection

Self-check: ask yourself: “Am I saying the only one?” If yes, the relative verb is a strong candidate for the subjunctive.

Mini checklist (before you validate your answer)

Am I intensifying an adjective (not a verb)?
Did I attach the prefix to the adjective (no space, no hyphen) as in the course?
Did the adjective still agree (feminine/masculine, plural)?
Did I avoid intensifying unique/excellent/magnifique?
If I used ne… que / le seul / l’unique: do I need subjunctive in the relative clause?

The prefixes archi-, hyper-, super-, ultra- are attached to an adjective.
Add -issime to an adjective to show a very strong intensity.

Formation (Formation)	Exemple (Example)
Archi- (Archi-)	Le bus est archiplein. (The bus is absolutely packed.) Elle est archi ennuyeuse. (She is super boring.)
Hyper- (Hyper-)	Il est hyper actif. (He is super active.) La vue est hyperbelle. (The view is absolutely beautiful.)
Ultra- (Ultra-)	La batterie est ultraperformante. (The battery is ultra high-performance.)
Super-	La voiture est superrapide. (The car is super fast.)
-issime (-issime)	Mon oncle est richissime. (My uncle is extremely rich.)

Exceptions!

No superlative with unique, excellent, magnifique.
When you use "ne... que" (meaning only) in a relative clause, the verb in the relative clause takes the subjunctive. Example: Il n’y a que toi qui aies des problèmes avec notre décision.
The subjunctive is used with the pattern le seul/l'unique + indicative/subjunctive. Example: Le seul garage qui fasse la vidange.

Exercise 1: Multiple choice

Instruction: Choose the correct answer

1. Pour votre contrôle technique, vérifiez que le niveau d'huile est ____ avant de reprendre la route.

2. Depuis l'accident, je suis ____ dès que j'entends un bruit au niveau du moteur.

3. Votre batterie est ____, mais elle se décharge vite si vous laissez les phares allumés.

4. C'est la seule dépanneuse qui arrive en moins de vingt minutes, et elle est ____ même aux heures de pointe.

Exercise 2: Rewrite the phrases

Instruction: Harmonise each sentence by strengthening the adjective with archi-, hyper-, super-, ultra- or -issime. If the sentence contains “ne... que” or “le seul”, put the verb of the relative clause in the subjunctive if necessary.

Show/Hide translation Show/Hide hints

Hint Hint (archi-) Après trois heures de réunion, je suis très fatigué.

⇒ ____________________________________________________________________________________________________ Example
Après trois heures de réunion, je suis archifatigué.
(After three hours of meeting, I am archi-tired.)
Hint Hint (hyper-) Ce logiciel est très utile pour préparer la présentation de demain.

⇒ ____________________________________________________________________________________________________ Example
Ce logiciel est hyperutile pour préparer la présentation de demain.
(This software is hyper-useful for preparing tomorrow’s presentation.)
Hint Hint (ultra-) Le smartphone de mon collègue est très performant, mais il chauffe vite.

⇒ ____________________________________________________________________________________________________ Example
Le smartphone de mon collègue est ultraperformant, mais il chauffe vite.
(My colleague’s smartphone is ultra-powerful, but it heats up quickly.)
Hint Hint (super-) Sur l'autoroute, sa voiture est très rapide ; il doit donc faire attention aux radars.

⇒ ____________________________________________________________________________________________________ Example
Sur l'autoroute, sa voiture est superrapide ; il doit donc faire attention aux radars.
(On the motorway, his car is super-fast; he must therefore watch out for speed cameras.)

Exercise 3: Multiple Choice

Instruction: Choose the correct sentence.