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A1 verb /juːz/

use

utiliser
Meaning
to employ something for a purpose; to take advantage of
Example
I use my computer for work and entertainment.
J'utilise mon ordinateur pour travailler et me divertir.
B2 adjective /ˌʌndɪˈsaɪdɪd/

Undecided

indécis; incertain
Meaning
not having made a decision; uncertain
Example
She was undecided about which college to attend.
Elle était indécise sur quel collège fréquenter.
B2 adjective /ʌnfəˈmɪl.jər/

Unfamiliar

inconnu; étrange
Meaning
not known or recognized; strange
Example
The city was unfamiliar to me since I had never been there before.
La ville m'était inconnue car je n'y étais jamais allé avant.
C2 noun /ʌnˈkloʊðɪŋ/

unclothing

déshabillage
Meaning
the act or process of removing clothing
Example
The child quickly ran inside for unclothing after playing in the mud.
L'enfant est rapidement allé à l'intérieur pour le déshabillage après avoir joué dans la boue.
C1 adjective /ʌnˈkwaɪ.ət/

Unquiet

agité; anxieux; perturbé
Meaning
restless; unable to remain still or quiet; anxious or troubled
Example
She spent an unquiet night worrying about the exam results.
Elle a passé une nuit agitée à s'inquiéter des résultats de l'examen.
B2 adjective /ʌnˈrɪəl/

unreal

irréel
Meaning
not real or not based on reality; exaggerated or imaginary
Example
The experience felt unreal after the sudden news.
L’expérience semblait irréelle après la nouvelle soudaine.
B2 adverb /ʌnˈsɜːrtənli/

uncertainly

avec incertitude
Meaning
in a way that shows doubt or lack of certainty
Example
She glanced uncertainly at the complicated instructions.
Elle a regardé les instructions compliquées avec incertitude.
C1 adjective /ʌnˈkuːθ/

uncouth

grossier
Meaning
Lacking good manners, refinement, or grace; awkward or rough.
Example
His uncouth behavior shocked the guests at the party.
Son comportement grossier a choqué les invités à la fête.
C1 adjective /ʌnˈtoʊld/

Untold

innombrable; infini
Meaning
very great in amount or degree; countless; immeasurable
Example
The earthquake caused untold damage to the city.
Le tremblement de terre a causé des dommages innombrables à la ville.
B2 verb /ʌnˈveɪl/

unveil

dévoiler
Meaning
to reveal or disclose something, especially in a formal manner
Example
The company will unveil a new product next week.
L'entreprise dévoilera un nouveau produit la semaine prochaine.
B1 adjective /ˈʌpər/

upper

supérieur
Meaning
higher in position or rank
Example
The upper floor of the building is under renovation.
Le étage supérieur du bâtiment est en rénovation.
B2 verb /ʌnˈtaɪ/

untie

délier
Meaning
to loosen or remove a knot or binding; to release something that is tied
Example
She untied the rope to free the boat.
Elle a délié la corde pour libérer le bateau.
B2 noun /ˈjuː.sɪdʒ/

Usage

utilisation
Meaning
the action of using something; the way in which words are used in a language
Example
The dictionary explains the correct usage of difficult words.
Le dictionnaire explique l'utilisation correcte des mots difficiles.
B1 adjective /ʌnˈfrɛndli/

unfriendly

peu aimable
Meaning
not kind or welcoming; hostile or cold in behavior or attitude
Example
The shop owner seemed unfriendly to new customers.
Le propriétaire du magasin semblait peu aimable envers les nouveaux clients.
B2 noun /ʌnˈrest/

Unrest

agitation; troubles; désordre social ou politique
Meaning
a state of dissatisfaction and disturbance; social or political disorder
Example
The economic crisis led to widespread social unrest.
La crise économique a conduit à une agitation sociale généralisée.
C1 adjective /ˌʌnɪnˈhɪbɪtɪd/

uninhibited

désinhibé
Meaning
Not restrained or restricted; free in behavior or expression.
Example
She gave an uninhibited laugh at the joke.
Elle a éclaté d'un rire désinhibé à la blague.
B1 adjective ʌnˈplænd

unplanned

non planifié
Meaning
Not planned or arranged in advance; happening spontaneously without preparation.
Example
Unplanned urbanization contributes to environmental issues.
L'urbanisation non planifiée contribue à des problèmes environnementaux.
A1 pronoun /ʌs/

us

nous
Meaning
used to refer to the speaker and one or more other people as the object of a verb or preposition
Example
She gave us a gift.
Elle nous a donné un cadeau.
C2 adjective /ˌʌnəˈsweɪdʒd/

unassuaged

inquiet
Meaning
Not made less intense or relieved; unrelieved.
Example
His grief remained unassuaged despite the passage of time.
Sa douleur est restée inquiète malgré le passage du temps.
B1 adjective /ʌnˈkʊkt/

uncooked

cru
Meaning
Not cooked; in a raw state.
Example
Eating uncooked meat can be dangerous.
Manger de la viande crue peut être dangereux.
B2 noun /ˈɜː.dʒən.si/

Urgency

urgence
Meaning
the quality of requiring immediate action or attention; pressing importance
Example
The urgency of the situation required immediate medical attention.
L'urgence de la situation nécessitait une attention médicale immédiate.
C1 adjective /ʌnˈskeɪðd/

unscathed

sain et sauf
Meaning
Without suffering any injury, damage, or harm.
Example
She escaped from the accident unscathed.
Elle a échappé à l'accident saine et sauve.
A2 noun /ˌʌndərˈstændɪŋ/

understanding

compréhension
Meaning
the ability to grasp the meaning, significance, or nature of something
Example
Her understanding of the issue was impressive.
Sa compréhension du problème était impressionnante.
B2 adjective /ʌnəˈfreɪd/

unafraid

intrépide
Meaning
Not feeling fear; brave or courageous
Example
She walked into the dark room, unafraid of what might be inside.
Elle est entrée dans la pièce sombre, intrépide de ce qui pourrait être à l'intérieur.
B2 adverb /ʌnˈkaɪndli/

unkindly

cruellement
Meaning
in a cruel, harsh, or unsympathetic manner
Example
She spoke unkindly about her colleague during the meeting.
Elle a parlé cruellement de son collègue pendant la réunion.
B2 adjective /ʌnˈɑːrmd/

unarmed

désarmé
Meaning
Not equipped with or carrying weapons
Example
The police found the suspect unarmed during the search.
La police a trouvé le suspect désarmé pendant la fouille.
C1 adjective /ʌnˈweɪ.vər.ɪŋ/

unwavering

inébranlable
Meaning
Steady or resolute; not wavering.
Example
He showed unwavering dedication to his goal.
Il a montré un dévouement inébranlable à son objectif.
B2 adjective /ʌnˈkɒmən/

uncommon

inhabituel
Meaning
rare, unusual, or remarkable
Example
It is uncommon to see snow in this region.
Il est rare de voir de la neige dans cette région.
A2 adjective /ʌnˈhæp.i/

Unhappy

mécontent; triste
Meaning
not happy; feeling sad or displeased; unfortunate or undesirable
Example
He was unhappy with the results of his exam.
Il était mécontent des résultats de son examen.
C1 adjective /ˌʌnɪmˈplɔɪəbəl/

unemployable

inapte à l'emploi
Meaning
Not able to be employed; lacking the skills or qualities necessary for employment
Example
Due to his criminal record, he was considered unemployable in most companies.
En raison de son casier judiciaire, il était considéré comme inapte à l'emploi dans la plupart des entreprises.
B1 adjective /ʌnˈjuː.ʒu.əl/

Unusual

inhabituel; étrange;
Meaning
not typical; strange; different from what is normal
Example
She wore an unusual dress to the party.
Elle portait une robe inhabituelle à la fête.
B1 adjective /ʌnˈsɜːrtən/

Uncertain

incertain
Meaning
not able to be relied on; not known or definite; not having reliable knowledge
Example
I am uncertain about my future career plans.
Je suis incertain de mes plans de carrière futurs.
C1 verb /ˌʌndəˈreɪt/

underrate

sous-estimer
Meaning
to fail to recognize the full value or importance of something or someone
Example
Many people underrate the benefits of regular exercise.
Beaucoup de gens sous-estiment les bienfaits de l'exercice régulier.
C1 noun /juːnəˈnɪməti/

Unanimity

unanimité
Meaning
complete agreement among all members of a group
Example
The committee reached unanimity on the new policy.
Le comité a atteint l'unanimité sur la nouvelle politique.
B2 adjective /ʌnˈbiːtən/

Unbeaten

invaincu; non défait
Meaning
not defeated; having never lost; undefeated
Example
The team remains unbeaten this season.
L'équipe reste invaincue cette saison.
C2 noun /ˌjuːnɪˈtɛəriən/

unitarian

unitaire
Meaning
A person who believes that God exists as one entity rather than as a Trinity; a member of a religious denomination that emphasizes individual freedom of belief.
Example
The Unitarian church is known for its inclusive and open-minded approach.
L'église unitaire est connue pour son approche inclusive et ouverte d'esprit.
C2 noun /ɜːrˈbænɪti/

urbanity

urbanité
Meaning
refined courtesy, elegance, and sophistication in manner
Example
Her urbanity made her popular among diplomats and leaders.
Son urbanité la rendait populaire parmi les diplomates et les dirigeants.
C2 noun /ˈʌŋɡwənt/

unguent

onguent
Meaning
A soothing or healing ointment applied to the skin.
Example
The doctor applied an unguent to heal the burn.
Le médecin a appliqué un onguent pour guérir la brûlure.
C1 adjective /ˌʌndərˈsteɪtɪd/

understated

sous-estimé
Meaning
Presented in a subtle and restrained way.
Example
She wore an elegant but understated dress.
Elle portait une robe élégante mais sous-estimée.
C2 noun /ˈʌp.wel.ɪŋ/

upwelling

Un phénomène océanographique impliquant le mouvement de l'eau dense, froide et riche en nutriments vers la surface de l'océan.
Meaning
An oceanographic phenomenon that involves wind-driven motion of dense, cooler, and nutrient-rich water towards the ocean surface.
Example
Upwelling brings nutrients to the ocean surface.
L'upwelling apporte des nutriments à la surface de l'océan.
C1 adjective /ʌlˈtɪəriər/

ulterior

motif caché
Meaning
hidden or secret, often with a selfish motive
Example
He invited her with an ulterior motive.
Il l'a invitée avec un motif caché.
B2 noun /ˌʌndəˈɡrædʒuət/

undergraduate

étudiant de premier cycle
Meaning
a student who has not yet earned a bachelor's degree
Example
She is an undergraduate studying computer science.
Elle est une étudiante de premier cycle étudiant en informatique.
A2 noun /ˈjuːnɪt/

unit

unité
Meaning
an individual thing or person regarded as a single and complete entity
Example
Each unit in the production line is carefully tested.
Chaque unité de la ligne de production est soigneusement testée.
B1 adjective /ʌnˈlaɪk/

Unlike

différent; pas similaire
Meaning
different from; not similar to
Example
Unlike his brother, he prefers quiet activities.
Contrairement à son frère, il préfère les activités calmes.
B2 adjective /ˈjuː.nɪ.faɪd/

unified

unifié
Meaning
Made into a whole or joined together.
Example
A unified approach fosters better outcomes.
Une approche unifiée favorise de meilleurs résultats.
C2 adjective /ʌnˈtʃeɪst/

Unchaste

immoral; impur;
Meaning
not celibate; having engaged in sexual relations; lacking moral purity
Example
The conservative society considered her behavior unchaste and improper.
La société conservatrice a jugé son comportement immoral et inapproprié.
C1 adjective /ʌnˈsɜːrvɪsəbəl/

Unserviceable

hors service; défectueux
Meaning
not in working order; unable to be used; defective
Example
The old computer became unserviceable after the system crash.
L'ancien ordinateur est devenu hors service après la panne du système.
B2 adverb /ˈʌt.ə.li/

Utterly

totalement; absolument; complètement
Meaning
completely; absolutely; totally
Example
The movie was utterly boring and I fell asleep.
Le film était complètement ennuyeux et je me suis endormi.
B2 adjective /ʌnˈbreɪkəbəl/

Unbreakable

qui ne peut être brisé ou endommagé ; très fort et durable
Meaning
not able to be broken or damaged; very strong and durable
Example
Their friendship formed an unbreakable bond.
Leur amitié a formé un lien incassable.
B1 verb /ʌnˈlɒk/

unlock

déverrouiller
Meaning
to open something that is locked; to make something accessible or available
Example
She used the key to unlock the door.
Elle a utilisé la clé pour déverrouiller la porte.
B2 adjective /ˌʌnˈkɔːrdɪneɪtɪd/

uncoordinated

désordonné; non coordonné
Meaning
lacking coordination, not well-organized or clumsy in movement
Example
His movements were uncoordinated, making him prone to accidents.
Ses mouvements étaient désordonnés, ce qui le rendait sujet aux accidents.
B1 adjective /ʌnˈmærid/

unmarried

célibataire
Meaning
Not married; single.
Example
He is thirty-five and still unmarried.
Il a trente-cinq ans et il est toujours célibataire.
A2 adjective /ˈjuːʒəl/

usual

habituel
Meaning
habitually or typically occurring or done
Example
It’s our usual meeting spot.
C'est notre lieu de réunion habituel.
C1 adjective /ʌnˈfɔːltərɪŋ/

unfaltering

inébranlable
Meaning
Steady and resolute; not weakening or hesitating
Example
She continued with unfaltering determination.
Elle a continué avec une détermination inébranlable.
C1 adjective /ˌʌnəˈteɪnəbl/

unattainable

inaccessible
Meaning
impossible to achieve, reach, or accomplish
Example
For many, becoming a professional athlete remains an unattainable dream.
Pour beaucoup, devenir un athlète professionnel reste un rêve inaccessible.
B1 adjective /ʌnˈkaʊntəbəl/

Uncountable

innombrable; infini
Meaning
too many to be counted; innumerable; infinite in quantity
Example
There are uncountable stars in the night sky.
Il y a des étoiles innombrables dans le ciel nocturne.
B1 adjective /ˌʌnsəkˈsesfl/

Unsuccessful

échoué; raté;
Meaning
not achieving desired aims or results; failing to accomplish a purpose
Example
His unsuccessful attempt to climb the mountain left him disappointed.
Sa tentative échouée de gravir la montagne l'a laissé déçu.
B1 noun /juːˈten.səlz/

Utensils

ustensiles
Meaning
tools or implements used for cooking, eating, or serving food
Example
Please wash all the cooking utensils after preparing dinner.
Veuillez laver tous les ustensiles de cuisine après avoir préparé le dîner.
B2 adjective /ʌnˈiːzi/

Uneasy

inquiet; anxieux; mal à l'aise
Meaning
worried; anxious; uncomfortable; restless
Example
She felt uneasy about walking alone at night.
Elle se sentait inquiète de marcher seule la nuit.
B2 adjective /ˌʌn.əkˈsep.tə.bəl/

Unacceptable

inacceptable
Meaning
not satisfactory or allowable; not acceptable
Example
The quality of work was completely unacceptable.
La qualité du travail était complètement inacceptable.
B2 adjective /ʌnˈskɪld/

Unskilled

non qualifié; travailleur sans compétences
Meaning
lacking technical training or ability; not requiring special skills
Example
Many unskilled workers are looking for training opportunities.
De nombreux travailleurs non qualifiés recherchent des opportunités de formation.
C1 adjective /ʌnˈsəʊʃəbl/

unsociable

asocial
Meaning
not enjoying the company of others; avoiding social interaction
Example
He became unsociable after moving to a new city.
Il est devenu asocial après avoir déménagé dans une nouvelle ville.
C1 adjective /ʌnˈkwes.tʃən.ə.bl̩/

Unquestionable

indiscutable; certain
Meaning
not able to be disputed or doubted; certain and beyond doubt
Example
Her honesty and integrity are unquestionable qualities.
Son honnêteté et son intégrité sont des qualités indiscutables.
B2 adverb /ʌnˈdaʊtɪdli/

undoubtedly

sans aucun doute
Meaning
without a doubt, certainly
Example
He is undoubtedly the best player on the team.
Il est sans aucun doute le meilleur joueur de l'équipe.
B2 verb /ʌpˈhoʊld/

uphold

maintenir
Meaning
to maintain or support a principle, law, or decision
Example
The judge promised to uphold justice at all costs.
Le juge a promis de maintenir la justice à tout prix.
C2 adjective /juːˈnɪsənənt/

unisonant

harmonieux
Meaning
Sounding together or in harmony.
Example
The unisonant voices created a powerful effect.
Les voix harmonieuses ont créé un effet puissant.
B1 adverb /ʌnˈfɔːrtʃənətli/

Unfortunately

Malheureusement
Meaning
used to express regret or disappointment about something
Example
Unfortunately, the weather was bad for our picnic.
Malheureusement, le temps était mauvais pour notre pique-nique.
C2 noun /ˈjuːʒəri/

usury

usure
Meaning
The practice of lending money at unreasonably high interest rates.
Example
The law strictly prohibits usury.
La loi interdit strictement l'usure.
B1 verb /juˈnaɪt/

unite

unir
Meaning
to join together or combine; to bring people or things together
Example
The crisis helped unite the community.
La crise a aidé à unir la communauté.
B1 adjective /ˌʌnɪmˈpɔːrtənt/

unimportant

sans importance
Meaning
not having much value, significance, or influence
Example
The detail seemed unimportant compared to the main issue.
Le détail semblait sans importance par rapport au problème principal.
B1 adjective /ˌʌnˈɪntrəstɪŋ/

uninteresting

ennuyeux
Meaning
not holding attention or curiosity; boring
Example
The lecture was uninteresting and difficult to stay focused on.
La conférence était ennuyeuse et difficile à suivre.
B1 adjective /ʌnˈwɒn.tɪd/

Unwanted

indésirable
Meaning
not desired or welcome; not wanted
Example
He felt like an unwanted guest at the meeting.
Il se sentait comme un invité indésirable à la réunion.
C1 adjective + noun ʌnˈpresɪdentɪd ˈnɒlɪdʒ

unprecedented knowledge

connaissance sans précédent
Meaning
Information or understanding that has never been obtained or achieved before.
Example
Artemis will provide unprecedented knowledge about the solar system.
Artemis fournira des connaissances sans précédent sur le système solaire.
C1 verb /ˌʌndərˈvæljuː/

undervalue

sous-estimer
Meaning
To assign too low a value or importance to something or someone.
Example
She felt that her boss consistently undervalued her contributions.
Elle sentait que son patron ne valorisait pas constamment ses contributions.
C1 adjective /ʌnˈkleɪmd/

Unclaimed

non réclamé; non demandé; abandonné ou sans propriétaire
Meaning
not claimed by anyone; not demanded or requested; abandoned or ownerless
Example
The unclaimed luggage was stored in the airport's lost property department.
Les bagages non réclamés ont été stockés dans le département des objets trouvés de l'aéroport.
B1 adjective /ˈjuːnɪfɔːrm/

Uniform

uniforme
Meaning
consistent; identical; standardized
Example
All students must wear a uniform to school.
Tous les étudiants doivent porter un uniforme à l'école.
C1 verb /ʌpˈruːt/

uproot

déraciner
Meaning
To pull something out of the ground; to remove or displace completely.
Example
They uprooted the old tree from the garden.
Ils ont déraciné l'arbre vieux du jardin.
B2 adjective /ˌʌnkənˈvɪnsɪŋ/

Unconvincing

invraisemblable
Meaning
failing to persuade or impress; not believable or credible
Example
His excuse for being late was completely unconvincing.
Son excuse pour être en retard était complètement invraisemblable.
A2 adjective /ʌnˈkʌmf.tə.bəl/

Uncomfortable

inconfortable; gênant
Meaning
causing or feeling slight pain or physical discomfort; making someone feel embarrassed, awkward, or anxious
Example
The chair was so uncomfortable that I couldn't sit in it for more than ten minutes.
La chaise était tellement inconfortable que je ne pouvais pas m'asseoir dessus pendant plus de dix minutes.
A2 conjunction /ʌnˈlɛs/

unless

à moins que
Meaning
except if
Example
We won't go unless it stops raining.
Nous n'irons pas à moins qu'il ne cesse de pleuvoir.
C2 adjective /ʌnˈfeɪnd/

unfeigned

authentique
Meaning
genuine; not pretended or insincere
Example
She expressed unfeigned joy at her friend's success.
Elle a exprimé une joie authentique lors du succès de son amie.
C1 adjective /ʌnˈʃeɪkən/

Unshaken

inquétable; ferme
Meaning
not disturbed or affected; firm and steady; unwavering
Example
Her faith remained unshaken despite all the challenges.
Sa foi est restée inébranlable malgré tous les défis.
C2 adjective /ˈʌŋk.tʃu.əs/

unctuous

flatteur
Meaning
Excessively flattering or ingratiating; oily in texture.
Example
His unctuous tone made everyone uncomfortable.
Son ton flatteur a mis tout le monde mal à l'aise.
C1 noun /ˈʌndərˌteɪkər/

undertaker

employé des pompes funèbres
Meaning
A person whose job is to prepare the dead for burial and arrange funerals.
Example
The undertaker prepared the body for the funeral service.
L'employé des pompes funèbres a préparé le corps pour le service funéraire.
C1 noun /ʌnɪmˈpɔːrtəns/

unimportance

insignifiance
Meaning
the state or quality of being insignificant or not important
Example
He dismissed the issue with a sense of unimportance.
Il a rejeté la question avec un sentiment de non-importance.
C1 adjective /ˌʌnbɪˈkʌmɪŋ/

unbecoming

inapproprié
Meaning
Not proper or appropriate for a person; unsuitable.
Example
His rude behavior was unbecoming of a leader.
Son comportement grossier était inapproprié pour un leader.
C2 adjective /ʌnˈtiːtʃəbəl/

unteachable

impossible à enseigner
Meaning
not able or willing to learn; resistant to instruction or guidance
Example
He was so stubborn that he became almost unteachable.
Il était si têtu qu’il est devenu presque impossible à enseigner.
C1 verb /ʌnˈɜːθ/

unearth

déterrer
Meaning
To dig up from the ground or to discover something hidden.
Example
Archaeologists unearthed ancient artifacts at the site.
Les archéologues ont déterré des artefacts anciens sur le site.
C1 noun ˌʌndərˈprɪvəlɪdʒd ɡruːps

underprivileged groups

groupes défavorisés
Meaning
Groups of people who lack basic necessities or advantages that are available to other members of society.
Example
Underprivileged groups benefit from social initiatives.
Les groupes défavorisés bénéficient des initiatives sociales.
B2 adjective /ˌʌndɪˈzaɪərəbl/

Undesirable

indésirable; nuisible; désagréable
Meaning
not wanted or wished for; harmful or unpleasant
Example
The new policy had several undesirable consequences.
La nouvelle politique a eu plusieurs conséquences indésirables.
A1 noun /ˈʌŋkəl/

uncle

oncle
Meaning
the brother of one's father or mother
Example
My uncle is visiting us next week.
Mon oncle nous rendra visite la semaine prochaine.
B2 adverb /ˈʌltəmətli/

ultimately

finalement
Meaning
in the end, after everything else
Example
Ultimately, we decided to go ahead with the project.
Finalement, nous avons décidé de poursuivre le projet.
C1 noun /ʌnˈfeɪθfʊlnəs/

unfaithfulness

infidélité
Meaning
the quality of being disloyal or not faithful; breach of trust or fidelity
Example
His unfaithfulness led to the end of their marriage.
Son infidélité a conduit à la fin de leur mariage.
B2 adjective /ˌʌnɪnˈfɔːrmd/

uninformed

mal informé
Meaning
lacking knowledge or awareness about a particular subject; not educated or informed
Example
The decision was made by an uninformed committee.
La décision a été prise par un comité mal informé.
C1 verb /ˌʌndərˈsteɪt/

understate

minimiser
Meaning
To describe something as being less important or serious than it really is.
Example
He tends to understate his achievements.
Il a tendance à minimiser ses réalisations.
C2 noun /ˈjuːzjuːfrʌkt/

usufruct

usufruit
Meaning
The legal right to use and enjoy the benefits of someone else’s property without owning it.
Example
The tenant had the usufruct of the land but not its ownership.
Le locataire avait l'usufruit de la terre mais pas sa propriété.
B2 adjective /ˌʌndərˈlaɪɪŋ/

underlying

sous-jacent
Meaning
basic or hidden but important; forming the foundation of something
Example
The underlying reason for the conflict was never addressed.
La raison sous-jacente du conflit n'a jamais été abordée.
C2 verb /ʌnˈkaʊtʃ/

uncouch

retirer du canapé (usage rare)
Meaning
to remove from a couch or to release from being laid down (rare/archaic usage)
Example
The surgeon attempted to uncouch the cataract.
Le chirurgien a tenté d'enlever la cataracte.
C1 adjective /ʌnˈspiːkəbl/

unspeakable

indicible
Meaning
too bad or shocking to be expressed in words
Example
The survivors endured unspeakable horrors during the war.
Les survivants ont enduré des horreurs indicibles pendant la guerre.
B1 adjective /ʌnˈtru/

Untrue

faux; incorrect
Meaning
not true; false; incorrect
Example
His statement about the incident was completely untrue.
Sa déclaration sur l'incident était complètement fausse.
B1 adjective /ʌnˈpɒpjʊlə/

unpopular

impopulaire
Meaning
not liked or supported by many people
Example
The decision was unpopular with the public.
La décision était impopulaire auprès du public.
B2 adjective /ʌnˈsuːtəbl/

Unsuitable

inapproprié; inapte
Meaning
not fitting or appropriate for a particular purpose or situation
Example
This formal dress is unsuitable for a casual beach party.
Cette robe formelle est inappropriée pour une fête de plage décontractée.
C1 adjective /ʌnˈθɪŋkɪŋ/

unthinking

irréfléchi
Meaning
done without careful thought; automatic or thoughtless
Example
His unthinking remark hurt her feelings.
Sa remarque irréfléchie a blessé ses sentiments.
C1 adjective /ˌjuːtɪlɪˈtɛəriən/

utilitarian

utilitaire
Meaning
Designed to be useful or practical rather than attractive; relating to the doctrine that actions are right if they are useful or for the benefit of a majority.
Example
The building had a simple utilitarian design.
Le bâtiment avait une conception utilitaire simple.
B2 adjective /ˌʌnəˈweər/

Unaware

inconscient; ignorant; sans savoir
Meaning
not knowing or realizing; having no knowledge of something
Example
She was completely unaware of the danger.
Elle était complètement inconsciente du danger.
C2 noun /ˈʌm.brə/

Umbra

ombre totale, région sombre d'une tache solaire
Meaning
the fully shaded inner region of a shadow cast by an opaque object; the dark center of a sunspot
Example
During the eclipse, we stood in the moon's umbra.
Pendant l'éclipse, nous nous sommes tenus dans l'ombre de la lune.
C1 noun /juːˈtoʊpiə/

utopia

utopie
Meaning
An imagined perfect society or place where everything is ideal.
Example
Many philosophers dreamed of creating a utopia for humanity.
De nombreux philosophes ont rêvé de créer une utopie pour l'humanité.
C1 adjective /ʌnˈsoʊld/

unsold

invendu
Meaning
not sold; remaining without a buyer
Example
The unsold goods were returned to the warehouse.
Les marchandises invendues ont été retournées à l’entrepôt.
A2 adjective /ˈjuːs.ləs/

Useless

inutile
Meaning
having no beneficial purpose; not useful
Example
This broken computer is completely useless.
Cet ordinateur cassé est complètement inutile.
C1 adjective /ʌnˈɡɑː.dɪd/

Unguarded

sans défense, négligent
Meaning
not protected or defended; careless about revealing private thoughts or information
Example
In an unguarded moment, she revealed her true feelings about the project.
Dans un moment sans défense, elle a révélé ses véritables sentiments à propos du projet.
C1 adjective ʌnˈmætʃt

unmatched

incomparable
Meaning
Not equaled or rivaled by any other; without equal.
Example
The freedom fighters showed unmatched bravery.
Les combattants de la liberté ont montré un courage incomparable.
A2 noun /ˈʌndərweər/

underwear

sous-vêtements
Meaning
Clothing worn beneath outer clothes, typically next to the skin.
Example
He bought new underwear for the trip.
Il a acheté de nouveaux sous-vêtements pour le voyage.
C1 verb /ʌnˈroʊl/

unroll

dérouler
Meaning
to open something that is rolled up; to spread out gradually
Example
She unrolled the map on the table to find the route.
Elle a déroulé la carte sur la table pour trouver l’itinéraire.
C2 adjective /ʌnˈspɛərɪŋ/

unsparing

implacable
Meaning
Showing no mercy or generosity; harsh or severe.
Example
The critic was unsparing in his review of the play.
Le critique était implacable dans sa critique de la pièce.
C1 adjective /ˌʌnbɪˈliːvɪŋ/

unbelieving

incrédule
Meaning
Not willing or able to believe; skeptical or doubtful
Example
She gave him an unbelieving look when he claimed to have met a celebrity.
Elle lui a lancé un regard incrédule lorsqu'il a affirmé avoir rencontré une célébrité.
B2 adjective /ˈʌl.tɪ.mət/

Ultimate

final; suprême; ultime
Meaning
being the best or most extreme example of its kind; final; last
Example
This is the ultimate test of your skills.
C'est le test ultime de vos compétences.
B1 noun /ˌʌnɪmˈplɔɪmənt/

Unemployment

chômage
Meaning
the state of being unemployed; lack of paid work
Example
The unemployment rate has increased significantly this year.
Le taux de chômage a augmenté de manière significative cette année.
C2 adjective /ˌʌnprəˈpɪʃəs/

unpropitious

défavorable
Meaning
Not giving or indicating a good chance of success; unfavorable.
Example
The team began their journey under unpropitious weather conditions.
L'équipe a commencé son voyage sous des conditions météorologiques défavorables.
B2 verb /ɜːrdʒ/

urge

exhorter
Meaning
to strongly encourage or try to persuade someone to do something
Example
Doctors urge patients to exercise regularly.
Les médecins exhortent les patients à faire de l'exercice régulièrement.
C1 noun /ˌʌl.tɪˈmeɪ.təm/

Ultimatum

ultimatum
Meaning
a final demand or statement of terms, the rejection of which will result in retaliation
Example
The boss gave him an ultimatum: improve or be fired.
Le patron lui a donné un ultimatum : améliorez-vous ou vous serez renvoyé.
C1 adjective /ʌnˈsteɪtɪd/

unstated

non exprimé
Meaning
not expressed directly in words; implied or left unsaid
Example
The contract included several unstated expectations.
Le contrat incluait plusieurs attentes non exprimées.