Omnivorous
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C1 adjective /ɒmˈnɪv.ər.əs/

Omnivorous

omnivore
Meaning
eating both plants and animals; feeding on various kinds of food
Example
Bears are omnivorous animals that eat both plants and meat.
Les ours sont des animaux omnivores qui mangent à la fois des plantes et de la viande.
C2 adjective /ˈɒsiəs/

osseous

osseux
Meaning
consisting of or turned into bone; bony
Example
The fossil showed osseous structures of the ancient creature.
Le fossile a montré des structures osseuses de la créature ancienne.
C2 noun /əˈprəʊ.bri.əm/

opprobrium

opprobre, déshonneur
Meaning
Harsh criticism or public disgrace.
Example
The scandal brought opprobrium on the politician.
Le scandale a apporté l'opprobre au politicien.
A2 noun /ˈɒf.ɪs/

office

bureau
Meaning
a room or building where people work, usually at desks
Example
She left the office early to attend a family event.
Elle a quitté le bureau tôt pour assister à un événement familial.
C1 noun /ˈɔːrθədɑːksi/

orthodoxy

orthodoxie
Meaning
traditional or generally accepted beliefs and practices
Example
The religious leader defended the orthodoxy of the faith.
Le leader religieux a défendu l'orthodoxie de la foi.
C2 noun /ˈɒbsɪkwi/

obsequy

obsèque
Meaning
A funeral rite, usually used in plural form obsequies.
Example
The village gathered for the obsequy of their beloved teacher.
Le village s'est réuni pour l'obseque de leur cher professeur.
B2 noun ˈɔː.bɪt

orbit

orbite
Meaning
The curved path of a celestial object around a star, planet, or moon.
Example
The satellite maintains its orbit around Earth.
Le satellite maintient son orbite autour de la Terre.
C1 adjective /əˈbliːk/

Oblique

oblique; diagonal; indirect ou évasif
Meaning
slanting; diagonal; indirect or evasive
Example
The artist drew an oblique line across the canvas.
L'artiste a tracé une ligne oblique sur la toile.
B2 noun /əbˈsɛʃən/

obsession

obsession
Meaning
An idea, thought, or concern that continually preoccupies or intrudes on a person's mind.
Example
His obsession with success drove him to work day and night.
Son obsession pour le succès l'a poussé à travailler jour et nuit.
A2 adjective/adverb /ˈɒnˌlaɪn/

online

en ligne
Meaning
connected to or available through the internet
Example
I prefer shopping online rather than going to stores.
Je préfère faire du shopping en ligne plutôt que d'aller dans les magasins.
C2 verb /ˈɒsɪfaɪ/

ossify

ossifier
Meaning
to turn into bone or become rigid and inflexible
Example
With age, some tissues tend to ossify.
Avec l'âge, certains tissus ont tendance à s'ossifier.
B2 noun /ˌoʊ.vɚˈkraʊ.dɪŋ/

overcrowding

surpeuplement excessif
Meaning
Excessive crowd or packed condition, having more people or vehicles in a place than the approved capacity.
Example
The subway system suffers from severe overcrowding during peak hours.
Le système de métro souffre de grave surpeuplement pendant les heures de pointe.
C2 adjective /ˌoʊpəˈlɛsənt/

opalescent

opalescent
Meaning
showing or reflecting a milky, iridescent light like an opal
Example
The opalescent sky glowed with shades of pink and blue.
Le ciel opalescent brillait avec des nuances de rose et de bleu.
C2 adjective /əˈfɪʃəs/

officious

médicule
Meaning
Excessively eager to offer unwanted help or advice; meddlesome.
Example
The officious guard kept interrupting the visitors with unnecessary instructions.
Le garde médicule interrompait les visiteurs avec des instructions inutiles.
C2 noun /ˌɑːpərˈtuːnɪzəm/

opportunism

opportunisme
Meaning
The practice of taking advantage of opportunities regardless of principles or ethics.
Example
His decision was driven by opportunism, not values.
Sa décision a été motivée par l'opportunisme, pas par des valeurs.
C1 noun əˈblɪv.i.ən

oblivion

oubli, destruction, disparition
Meaning
The state of being unaware or unconscious of what is happening; complete forgetfulness.
Example
His name faded into oblivion over time.
Son nom s'est effacé dans l'oubli au fil du temps.
C1 noun /ɔːr/

Oar

aviron
Meaning
a long pole with a flat blade used to row a boat
Example
He dipped the oar into the water and pulled the boat forward.
Il plongea l'aviron dans l'eau et tira le bateau en avant.
B2 noun /əˌrɪʒ.əˈnæl.ə.ti/

Originality

originalité
Meaning
the quality of being novel or unusual; the ability to think independently and creatively
Example
The artist's work showed great originality and creativity.
Le travail de l'artiste a montré une grande originalité et créativité.
B1 verb /ˈɔːrɡənaɪz/

organize

organiser
Meaning
to arrange systematically; to plan and coordinate
Example
She organized a surprise party for her friend.
Elle a organisé une fête surprise pour son amie.
B2 adjective /ˌɑːp.təˈmɪs.tɪk/

optimistic

optimiste
Meaning
hopeful and confident about the future
Example
She is optimistic about the success of her new project.
Elle est optimiste quant au succès de son nouveau projet.
B2 verb /ˈɒkjʊpaɪ/

occupy

occuper
Meaning
to take up space or time; to live or work in a place
Example
The new family will occupy the house next month.
La nouvelle famille occupera la maison le mois prochain.
C2 adjective /ˈɒpjʊlənt/

opulent

opulent
Meaning
Ostentatiously rich, luxurious, or lavish.
Example
They hosted an opulent wedding with gold decorations.
Ils ont organisé un mariage opulent avec des décorations dorées.
C1 adjective /əbˈtjuːs/

Obtuse

obtus; lent à comprendre; sans intelligence
Meaning
annoyingly insensitive or slow to understand; lacking in intelligence or perception
Example
He was being deliberately obtuse about the instructions.
Il était délibérément obtus à propos des instructions.
B1 adverb /ˈʌðərwaɪz/

Otherwise

autrement; sinon
Meaning
in a different way; if not; or else; apart from that
Example
Study hard, otherwise you will fail the exam.
Étudie dur, sinon tu échoueras à l'examen.
C1 verb /aʊtˈlɪv/

outlive

survivre
Meaning
to live longer than someone or something else
Example
She outlived all her siblings.
Elle a vécu plus longtemps que tous ses frères et sœurs.
B1 noun /ˈɔːfɪsər/

officer

officier
Meaning
a person in a position of authority, especially in law enforcement
Example
The officer gave him a ticket for speeding.
L'officier lui a donné une amende pour excès de vitesse.
B2 verb /ˌoʊvərˈiːt/

overeat

bonheur
Meaning
To eat more food than the body needs.
Example
She tends to overeat when she is stressed.
Elle ne pouvait pas cacher son bonheur quand elle a reçu le prix.
C2 noun (plural) /ˈɔːrdʒiːz/

orgies

orgies
Meaning
Wild gatherings involving excessive indulgence in food, drink, or sexual activity.
Example
The ancient Romans were infamous for their lavish feasts and orgies.
Les anciens Romains étaient infâmes pour leurs festins somptueux et leurs orgies.
C2 adjective /ˈoʊdiəs/

odious

odieux
Meaning
extremely unpleasant or repulsive
Example
The dictator was remembered for his odious crimes.
Le dictateur a été rappelé pour ses crimes odieux.
B2 verb /ɒpt/

opt

choisir
Meaning
to choose or decide to do something instead of something else
Example
Many students opt to study abroad for better opportunities.
De nombreux étudiants choisissent d'étudier à l'étranger pour de meilleures opportunités.
A2 preposition /ˈɒntu/

onto

sur
Meaning
moving to a position on the surface of something
Example
She jumped onto the table to get the book.
Elle a sauté sur la table pour prendre le livre.
B2 adjective /əˈpəʊzd/

opposed

opposé
Meaning
being against or in disagreement with something
Example
She is strongly opposed to animal testing.
Elle est fermement opposée aux tests sur les animaux.
B2 noun, verb /ˈaʊtlɔː/

outlaw

hors-la-loi, interdire
Meaning
as a noun: a person who breaks the law and lives outside its protection; as a verb: to make something illegal
Example
The government decided to outlaw the harmful practice.
Le gouvernement a décidé d'interdire la pratique nuisible.
C2 verb /oʊˈpaɪn/

opine

exprimer une opinion
Meaning
to express an opinion or belief
Example
The professor opined that the policy would fail.
Le professeur a exprimé que la politique échouerait.
A2 noun /ˈoʊ.ʃən/

ocean

océan
Meaning
A very large expanse of sea, especially the main areas of sea between continents.
Example
The ocean covers more than 70% of the Earth's surface.
L'océan couvre plus de 70% de la surface de la Terre.
B2 noun /ˈaʊtˌfɪt/

outfit

tenue
Meaning
A set of clothes worn together, often for a particular occasion.
Example
She wore a beautiful outfit to the party.
Elle portait une belle tenue à la fête.
A1 adjective /ˈɔːr.ɪndʒ/

Orange

orange
Meaning
having a color between red and yellow like that of a ripe orange fruit
Example
The orange sunset painted the sky magnificently.
Le coucher du soleil orange a peint le ciel magnifiquement.
A1 preposition /ɒn/

on

sur
Meaning
physically in contact with and supported by a surface
Example
The book is on the table.
Le livre est sur la table.
C1 adjective /ˌɔːrnəˈmɛntl/

ornamental

ornemental
Meaning
Serving as decoration; decorative rather than functional.
Example
The garden was filled with ornamental plants.
Le jardin était rempli de plantes ornementales.
C1 noun /ˈɒktɪv/

octave

octave
Meaning
A series of eight musical notes, or the interval between one musical pitch and another with double its frequency.
Example
The singer's voice could easily reach the higher octave.
La voix du chanteur pourrait facilement atteindre l'octave supérieure.
B1 verb /oʊ/

owe

devoir
Meaning
to be under obligation to pay or repay; to be indebted
Example
I owe my success to my parents' support.
Je dois mon succès au soutien de mes parents.
B2 noun /ˈɒfərɪŋ/

offering

offre
Meaning
something that is given, especially as a gift or contribution
Example
The company’s latest offering is an eco-friendly car.
La dernière offre de l'entreprise est une voiture écologique.
B2 adjective /ˈɒp.ʃən.əl/

Optional

facultatif
Meaning
not compulsory; left to choice
Example
Wearing a tie is optional for this event.
Porter une cravate est facultatif pour cet événement.
C1 adjective /ˌaʊtˈspoʊkən/

Outspoken

franc
Meaning
frank; speaking directly
Example
She is known for being outspoken about social issues.
Elle est connue pour être franche sur les problèmes sociaux.
B2 noun /ˈɔːrnəmənt/

ornament

ornement
Meaning
A decorative object that adds beauty to something.
Example
The Christmas tree was decorated with colorful ornaments.
L'arbre de Noël était décoré avec des ornements colorés.
B2 adjective /ˈɔː.rəl/

Oral

oral; relatif à la bouche
Meaning
spoken rather than written; relating to the mouth
Example
The oral examination will test your speaking skills.
L'examen oral évaluera vos compétences orales.
B2 noun /ˈɒt.ər/

Otter

loutre
Meaning
a mammal with webbed feet that lives near water and feeds on fish
Example
The playful otter swam gracefully in the river.
La loutre joueuse nageait gracieusement dans la rivière.
C2 noun /ˈɑːbəlɪsk/

obelisk

obélisque
Meaning
A tall, four-sided, narrow tapering monument with a pyramid-shaped top.
Example
The ancient Egyptians built obelisks to honor their gods.
Les anciens Égyptiens ont construit des obélisques pour honorer leurs dieux.
B2 noun /ˈaʊtskɜːrts/

outskirts

périphérie de la ville
Meaning
The outer parts of a town or city, away from the center.
Example
They moved to the outskirts of the city for a quieter life.
Ils ont déménagé en périphérie de la ville pour une vie plus calme.
B2 noun /əˈfɛns/

offense

infraction
Meaning
an illegal act; a crime
Example
The offense was committed in broad daylight.
L'infraction a été commise en plein jour.
A1 adjective /əʊˈkeɪ/

okay

d'accord
Meaning
used to express agreement or acceptance
Example
It's okay to leave early today.
Il est d'accord de partir tôt aujourd'hui.
C1 noun /ˌɑːsɪˈleɪʃən/

oscillation

oscillation
Meaning
The movement back and forth at a regular speed.
Example
The oscillation of the pendulum controls the clock.
L'oscillation du pendule contrôle l'horloge.
B2 verb /ˌoʊvərˈkʌm/

overcome

surmonter
Meaning
To succeed in dealing with a problem or difficulty.
Example
You can overcome procrastination with planning.
Vous pouvez surmonter la procrastination en planifiant.
C1 noun /ˈɔːrdɪnəns/

ordinance

ordonnance
Meaning
An authoritative rule, law, or decree issued by a city, town, or authority.
Example
The city council passed an ordinance banning smoking in public parks.
Le conseil municipal a adopté une ordonnance interdisant de fumer dans les parcs publics.
B2 adverb /ˈəʊvəli/

overly

excessivement
Meaning
to an excessive degree or extent
Example
She was overly concerned about the results.
Elle était excessivement préoccupée par les résultats.
C1 noun ɔːrˈdiːl

ordeal

épreuve difficile
Meaning
A physical or mental painful experience that must be endured
Example
Surviving the wilderness was a tough ordeal for them.
Survivre dans la nature a été une épreuve difficile pour eux.
C1 adjective /ˌaʊt əv ðə ˈweɪ/

out-of-the-way

éloigné ou inhabituel
Meaning
remote or unusual; not in a convenient or usual location
Example
They stayed in an out-of-the-way village.
Ils sont restés dans un village éloigné.
C1 noun /oʊˈveɪʃən/

ovation

ovation
Meaning
an enthusiastic show of approval, especially by clapping hands
Example
The actor received a standing ovation after his performance.
L'acteur a reçu une ovation debout après sa performance.
B2 noun/verb /ˈoʊvərˌdoʊs/

overdose

overdose
Meaning
An excessive and dangerous amount of a drug; to take too much of a substance.
Example
He was rushed to the hospital after a drug overdose.
Il a été transporté à l'hôpital après une overdose de drogue.
C1 adjective /ˌɔːrθəˈpiːdɪk/

orthopedic

relatif à la correction des déformations osseuses ou musculaires
Meaning
Relating to the correction of deformities of bones or muscles.
Example
She visited an orthopedic surgeon for her back pain.
Elle a consulté un chirurgien orthopédique pour sa douleur au dos.
C2 verb /ˌaʊtməˈnuːvər/

outmaneuver

surpasser habilement
Meaning
to gain an advantage over an opponent by skillful or clever action
Example
The smaller company managed to outmaneuver its larger rival.
La petite entreprise a réussi à surpasser habilement son grand concurrent.
B2 noun/verb /ˌoʊvərˈlæp/

overlap

chevauchement
Meaning
To extend over and cover partly; an area where things coincide.
Example
The two meetings overlap by an hour.
Les deux réunions se chevauchent d'une heure.
C1 noun /ˈoʊvərˌtʊr/

overture

ouverture / proposition
Meaning
An introduction to something more substantial; a proposal or preliminary action.
Example
The peace overture was welcomed by both nations.
L'ouverture de la paix a été accueillie favorablement par les deux nations.
B2 adverb /əˈfɪʃəli/

officially

officiellement
Meaning
in a formal or authorized way
Example
The building was officially opened by the mayor.
Le bâtiment a été officiellement inauguré par le maire.
C2 adjective /ˈoʊ.kən/

oaken

fait de chêne
Meaning
made of or resembling oak wood
Example
The villagers gathered around the oaken table in the hall.
Les villageois se sont rassemblés autour de la table en chêne dans la salle.
B2 noun ˈəʊ.və.hed

overhead

frais généraux
Meaning
Ongoing business expenses not directly attributable to creating a product or service.
Example
The company reduced its overhead to increase profits.
L’entreprise a réduit ses frais généraux pour augmenter ses bénéfices.
C1 adjective /ɔːˈneɪt/

ornate

orné
Meaning
elaborately or highly decorated
Example
The palace hall was filled with ornate furniture and paintings.
La salle du palais était remplie de meubles ornés et de peintures.
C2 noun /ˈɒrɪz(ə)n/

orison

prière
Meaning
a prayer, especially a devout or formal one
Example
He whispered a quiet orison before going to sleep.
Il murmura une prière silencieuse avant de dormir.
C1 noun /oʊˈmɪʃ.ən/

Omission

omission; exclusion
Meaning
the action of excluding or leaving out someone or something; a failure to include
Example
The omission of his name from the list was intentional.
L'omission de son nom de la liste était intentionnelle.
B1 adjective, adverb /ˈoʊvərɔːl/

overall

dans l'ensemble
Meaning
in general or as a whole
Example
Overall, the project has been successful.
Dans l'ensemble, le projet a été un succès.
C2 verb /aʊtˈraɪd/

outride

dépasser
Meaning
to ride faster, farther, or better than someone else
Example
The young rider managed to outride his competitors in the race.
Le jeune cavalier a réussi à dépasser ses concurrents dans la course.
B2 noun ɔːˈɡæn.ɪk fuːdz

organic foods

aliments biologiques
Meaning
Food produced without the use of chemicals such as artificial pesticides, fertilizers, or other artificial agents.
Example
Organic foods are healthier than processed foods.
Les aliments biologiques sont plus sains que les aliments transformés.
C1 noun /əˈpreʃ.ən/

Oppression

oppression; abus; tyrannie;
Meaning
cruel or unjust treatment or exercise of authority; the state of being subject to harsh treatment
Example
The people fought against political oppression.
Les gens ont lutté contre l'oppression politique.
B1 noun /ˌɑk.jəˈpeɪ.ʃən/

Occupation

occupation; profession; prise de contrôle
Meaning
a job or profession; the action of taking control of a place
Example
Teaching is her chosen occupation.
L'enseignement est sa profession choisie.
C2 adjective /ˈoʊ.vɔɪd/

ovoid

ovale
Meaning
egg-shaped; resembling an oval or ellipse
Example
The artist painted an ovoid shape in the center of the canvas.
L'artiste a peint une forme ovale au centre de la toile.
A1 adverb /ˈɔːfən/

often

souvent
Meaning
frequently, many times
Example
I often visit my grandparents on weekends.
Je visite souvent mes grands-parents le week-end.
B2 verb /oʊˈmɪt/

omit

omettre
Meaning
to leave out or exclude; to fail to include something
Example
Please don't omit any important details from your report.
Veuillez ne pas omettre les détails importants dans votre rapport.
C2 noun /oʊf/

Oaf

une personne maladroite, stupide ou insensible
Meaning
a clumsy, stupid, or insensitive person
Example
Don't be such an oaf - handle the dishes carefully!
Ne sois pas un oaf - manipule les plats avec soin !
B1 noun ˌɒpəˈtjuːnɪtiz

opportunities

opportunités
Meaning
A set of circumstances that makes it possible to do something; chances for advancement or success.
Example
Opportunities for jobs decreased.
Les opportunités d'emploi ont diminué.
C1 noun /əbˈstrʌkʃən/

obstruction

obstacle
Meaning
Something that blocks or gets in the way; the action of obstructing.
Example
There was an obstruction on the railway track.
Il y avait un obstacle sur la voie ferrée.
C1 adjective /ˌoʊvərˈbloʊn/

overblown

exagéré
Meaning
excessively exaggerated or inflated
Example
The controversy was overblown by the media.
La controverse a été exagérée par les médias.
B1 noun /ˈɑp.ʃən/

Option

option
Meaning
a thing that is or may be chosen; an alternative course of action
Example
You have the option to work from home or office.
Vous avez l'option de travailler depuis chez vous ou au bureau.
C2 noun /ˈaʊtˌrɪɡər/

outrigger

structure de stabilisation
Meaning
a projecting structure on a boat, used for stability, or a boat fitted with such support
Example
The fisherman paddled his outrigger canoe across the lagoon.
Le pêcheur a pagayé sa pirogue avec un outrigger à travers la lagune.
B2 noun /ˈɒs.trɪtʃ/

Ostrich

autruche
Meaning
a large flightless bird native to Africa with long legs and neck
Example
The ostrich is the world's largest bird.
L'autruche est le plus grand oiseau du monde.
C1 noun /oʊˈbɪt.ʃu.er.i/

Obituary

nécrologie
Meaning
a notice of someone's death published in a newspaper; biographical account of deceased person
Example
The newspaper published his obituary yesterday.
Le journal a publié son nécrologie hier.
C1 noun /ˈɒktəɡən/

octagon

octogone
Meaning
A polygon with eight sides and eight angles.
Example
The stop sign is shaped like an octagon.
Le panneau stop a la forme d'un octogone.
C2 noun /ˌɔːrnɪˈθɑːlədʒi/

ornithology

ornithologie
Meaning
the scientific study of birds
Example
She pursued ornithology to understand the migration patterns of birds.
Elle a poursuivi l'ornithologie pour comprendre les schémas de migration des oiseaux.
C1 adjective /əbˈsɛsɪv/

obsessive

obsessionnel
Meaning
Relating to or characterized by an obsession; thinking about something too much.
Example
He has an obsessive interest in cleanliness.
Il a un intérêt obsessionnel pour la propreté.
A1 adjective/adverb /ˈoʊnli/

only

seul
Meaning
without others; solely
Example
He is the only person who knows the secret.
Il est la seule personne qui connaît le secret.
C1 noun /əˈfen.dər/

Offender

délinquant; infractionniste de la loi
Meaning
a person who commits an illegal act; someone who breaks the law
Example
The young offender was sentenced to community service.
Le jeune délinquant a été condamné à des travaux d'intérêt général.
C1 adjective /ˈɒm.ɪ.nəs/

Ominous

menaçant; sinistre
Meaning
giving the impression that something bad will happen; threatening; foreboding
Example
The dark clouds looked ominous before the storm.
Les nuages sombres paraissaient menaçants avant la tempête.
C2 noun ˈɒpjʊləns

opulence

opulence
Meaning
Great wealth or luxuriousness.
Example
The opulence of the mansion was evident in its ornate furnishings.
L'opulence du manoir était évidente dans ses meubles ornés.
A2 noun /ˈɒbdʒɪkt/

object

objet
Meaning
a thing that can be seen and touched
Example
The table is an object in the room.
La table est un objet dans la pièce.
C1 noun /ˈaʊtriːtʃ/

outreach

expansion de l'aide
Meaning
The act of providing services or support to people who might not otherwise have access to them.
Example
The charity launched a new outreach program for the homeless.
L'association a lancé un nouveau programme d'expansion de l'aide pour les sans-abri.
A1 interjection /oʊ/

oh

Oh
Meaning
used to express surprise, realization, or understanding
Example
Oh, I didn't know you were here!
Oh, je ne savais pas que tu étais ici !
C2 noun /ˌɔːrdɪˈneɪʃən/

ordination

ordination
Meaning
The ceremony of conferring holy orders or official religious authority.
Example
The church held a special service for the ordination of new priests.
L'église a organisé un service spécial pour l'ordination de nouveaux prêtres.
C2 noun /ˈoʊɡər/

ogre

ogre
Meaning
A mythical monster, often depicted as large, hideous, and cruel; metaphorically, a cruel or terrifying person.
Example
The villagers feared the ogre who lived in the dark forest.
Les villageois craignaient l'ogre qui vivait dans la forêt sombre.
C1 noun /əbˈdʒɛktər/

objector

opposant
Meaning
a person who expresses opposition or disapproval to something
Example
The objector raised his concerns during the town meeting.
L'opposant a exprimé ses préoccupations lors de la réunion municipale.
C2 verb /ˌoʊvərˈliːp/

overleap

sauter par-dessus
Meaning
To jump over something; to omit or disregard something.
Example
He managed to overleap the fence easily.
Il a réussi à sauter la clôture facilement.
C1 noun /ˈɑd.ɪ.ti/

Oddity

étrangeté
Meaning
something that is strange or unusual; a peculiar trait
Example
His habit of sleeping standing up was considered an oddity.
Son habitude de dormir debout était considérée comme une étrangeté.
C1 verb /ˌoʊvərˈθroʊ/

overthrow

bonheur
Meaning
To remove a leader or government from power, often by force.
Example
The rebels planned to overthrow the corrupt regime.
Elle ne pouvait pas cacher son bonheur lorsqu'elle a reçu le prix.
C1 adjective /oʊˈvɜːrt/

overt

ouvert
Meaning
Done or shown openly; not hidden or secret.
Example
There was an overt display of hostility between the rivals.
Il y avait une démonstration ouverte d'hostilité entre les rivaux.
B2 noun ˈɒksɪdʒən prəˈdʌkʃən

oxygen production

production d'oxygène
Meaning
The process of generating oxygen through photosynthesis or other means.
Example
Plants are vital for oxygen production and the maintenance of life.
Les plantes sont vitales pour la production d'oxygène et le maintien de la vie.
B2 noun /ˈɔɪ.stər/

Oyster

huître
Meaning
a type of shellfish that can be eaten and sometimes contains pearls
Example
She ordered fresh oysters at the seafood restaurant.
Elle a commandé des huîtres fraîches au restaurant de fruits de mer.
B2 noun ˈəʊnəʃɪp

ownership

propriété
Meaning
The act, state, or right of possessing something; legal title to something.
Example
Ownership of resources was crucial.
La propriété des ressources était cruciale.
C2 noun /ˌɒktədʒəˈnɛəriən/

octogenarian

octogénaire
Meaning
A person who is between 80 and 89 years old.
Example
The octogenarian still jogs every morning to stay healthy.
L'octogénaire court encore chaque matin pour rester en bonne santé.
A2 noun /ˈoʊ.nər/

Owner

propriétaire
Meaning
a person who owns something; someone who has legal possession of property
Example
The owner of the restaurant greeted us warmly.
Le propriétaire du restaurant nous a accueillis chaleureusement.
C1 adjective /əbˈstrʌk.tɪv/

Obstructive

obstructif
Meaning
deliberately creating difficulties or preventing progress; hindering or blocking something
Example
The obstructive policies hindered economic growth.
Les politiques obstructives ont entravé la croissance économique.
C1 verb /ˌoʊvərˈpaʊər/

overpower

dominer
Meaning
To defeat or gain control over someone or something by using greater strength or force.
Example
The soldiers managed to overpower the enemy forces.
Les soldats ont réussi à dominer les forces ennemies.
C2 noun /ˌɑːbdʒərˈɡeɪʃən/

objurgation

réprimande sévère
Meaning
a harsh scolding or strong rebuke
Example
His misconduct earned him a severe objurgation from the manager.
Sa mauvaise conduite lui a valu une réprimande sévère de la part du responsable.
B2 noun /ˈaʊt.saɪ.dər/

Out-sider

étranger
Meaning
a person who does not belong to a particular group; someone not accepted by a group
Example
As an outsider, he found it difficult to understand their traditions.
En tant qu'outsider, il a trouvé difficile de comprendre leurs traditions.
C1 adjective /ˌoʊvərˈrɔt/

overwrought

agité / excessivement nerveux
Meaning
extremely agitated or nervous; excessively elaborate
Example
She was too overwrought to speak clearly after the accident.
Elle était trop agité pour parler clairement après l'accident.
B1 noun ˌɔː.ɡən.aɪˈzeɪ.ʃən

organization

organisation
Meaning
An organized group of people with a particular purpose, such as a business or government department.
Example
The organization was officially inaugurated in 2024.
L'organisation a été inaugurée officiellement en 2024.
B1 noun ˌɔː.ɡən.aɪˈzeɪ.ʃənz

organizations

organisations
Meaning
Organized groups of people with a particular purpose
Example
Organizations play a key role in policymaking.
Les organisations jouent un rôle clé dans l'élaboration des politiques.
C1 noun /ˈɔr.ə.tər/

Orator

orateur
Meaning
a public speaker, especially one who is eloquent or skilled in speaking
Example
The famous orator delivered an inspiring speech.
Le célèbre orateur a prononcé un discours inspirant.
B2 adverb /ˌoʊvərˈnaɪt/

Overnight

du jour au lendemain; soudainement; très rapidement
Meaning
during the night; suddenly; very quickly
Example
The city was transformed overnight.
La ville a été transformée du jour au lendemain.
C1 verb /ˌoʊvərˈriːtʃ/

overreach

dépassement de soi
Meaning
to go beyond what is proper, acceptable, or achievable; to overextend
Example
The politician overreached by making promises he couldn't keep.
Le politicien a dépassé les limites en faisant des promesses qu'il n'a pas pu tenir.
C2 adjective /ˈoʊ.pən ˈhæn.dɪd/

Open-handed

généreux; libéral
Meaning
Generous; liberal; giving freely;
Example
He is very open-handed with his money and always helps those in need.
Il est très généreux avec son argent et aide toujours ceux qui en ont besoin.
C1 adjective /əˈblaɪdʒɪŋ/

obliging

serviable
Meaning
Willing to help or do favors; accommodating.
Example
The staff at the hotel were very obliging and friendly.
Le personnel de l'hôtel était très serviable et amical.
C1 adjective ˈɒptɪmaɪzd

optimized

optimisé, amélioré, plus efficace
Meaning
Made as fully perfect, functional, or effective as possible; improved to achieve maximum efficiency.
Example
The system has been optimized for faster performance.
Le système a été optimisé pour des performances plus rapides.
C1 noun /ˈɑːlɪˌɡɑːrki/

oligarchy

oligarchie
Meaning
A small group of people having control of a country, organization, or institution.
Example
The nation was ruled by a wealthy oligarchy that controlled all resources.
La nation était dirigée par une oligarchie riche qui contrôlait toutes les ressources.