observer
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B2 noun /əbˈzɜːvər/

observer

observateur
Meaning
a person who watches or notices something
Example
The observer took notes during the meeting.
L'observateur a pris des notes pendant la réunion.
A1 verb /ˈoʊpən/

open

ouvrir
Meaning
to move something so as to allow access; to begin
Example
Please open the door for me.
s'il vous plaît ouvrez la porte pour moi.
B2 verb /əˈfend/

offend

offenser
Meaning
to cause displeasure or resentment; to hurt someone's feelings
Example
His rude comments offended many people at the meeting.
Ses commentaires impolis ont offensé de nombreuses personnes à la réunion.
C2 noun /ɒmˈnɪʃəns/

omniscience

omniscience
Meaning
the state of knowing everything
Example
The novel's narrator has an air of omniscience, revealing every character's thoughts.
Le narrateur du roman a un air d'omniscience, révélant les pensées de chaque personnage.
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.
C1 adjective /aʊtˈmoʊdɪd/

outmoded

démodé
Meaning
No longer in fashion or useful; outdated.
Example
That old computer is completely outmoded.
Cet ancien ordinateur est complètement démodé.
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 /ˈɒfʃuːt/

offshoot

dérivé
Meaning
A branch or result that develops from something larger or more important.
Example
The startup was an offshoot of a major tech company.
La startup était un dérivé d'une grande entreprise technologique.
C2 adjective /ɒmˈnɪp.ə.tənt/

omnipotent

omnipotent
Meaning
Having unlimited power; able to do anything; all-powerful.
Example
In many religions, God is considered omnipotent.
Dans de nombreuses religions, Dieu est considéré comme omnipotent.
B2 noun /ˈaʊt.laɪn/

Outline

plan; contour; résumé
Meaning
a general description or plan showing the essential features of something; the main points
Example
The teacher provided an outline of the course syllabus.
L'enseignant a fourni un plan du programme du cours.
A1 adjective /oʊˈkeɪ/

ok

d'accord
Meaning
used to indicate agreement, approval, or understanding
Example
Okay, let's go to the park.
D'accord, allons au parc.
B1 adjective /əˈkeɪ.ʒən.əl/

Occasional

occasionnel
Meaning
occurring infrequently or irregularly; happening from time to time
Example
She enjoys occasional walks in the park.
Elle aime les promenades occasionnelles dans le parc.
C1 adjective ˈɒk.sɪ.də.tɪv

oxidative

Relatif à l'oxydation
Meaning
Related to or caused by oxidation, especially cellular damage from free radicals.
Example
Excess stress can lead to oxidative damage in cells.
Le stress excessif peut entraîner des dommages oxydatifs dans les cellules.
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.
B2 noun /ˈaʊtlet/

outlet

sortie
Meaning
a means by which something is released, expressed, or distributed
Example
Art is a great outlet for emotions.
L'art est une excellente sortie pour les émotions.
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.
B2 noun /ɒpˈtɪʃən/

optician

opticien
Meaning
A person who makes or sells glasses and contact lenses.
Example
The optician adjusted my new glasses to fit better.
L'opticien a ajusté mes nouvelles lunettes pour qu'elles s'ajustent mieux.
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.
A2 noun /ˈɒpərə/

opera

opéra
Meaning
a dramatic performance in which the actors sing most of their lines
Example
We watched a beautiful opera at the theater last night.
Nous avons regardé un bel opéra au théâtre hier soir.
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 verb /ˌaʊtˈduː/

outdo

surpasser
Meaning
To do better than someone else; to surpass.
Example
She always tries to outdo her classmates in exams.
Elle essaie toujours de surpasser ses camarades de classe lors des examens.
C2 adjective /ɔːrˈθɑːɡənl/

orthogonal

orthogonal
Meaning
at right angles; independent or unrelated
Example
In mathematics, two vectors are orthogonal if their dot product is zero.
En mathématiques, deux vecteurs sont orthogonaux si leur produit scalaire est nul.
C1 noun /ˈɑːdəsi/

odyssey

long voyage
Meaning
a long, adventurous journey; a series of experiences
Example
Her career has been an odyssey of challenges and achievements.
Sa carrière a été une odyssée de défis et de réussites.
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.
C2 noun /ˌɒn.əˌmæt.əˈpiː.ə/

onomatopoeia

onomatopée
Meaning
The formation of a word from a sound associated with what is named.
Example
The word 'buzz' is an example of onomatopoeia.
Le mot 'buzz' est un exemple d'onomatopée.
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.
C2 adjective /ˌoʊvərˈwiːnɪŋ/

overweening

arrogant excessif
Meaning
excessively arrogant or prideful
Example
His overweening pride cost him many friends.
Son excès de fierté lui a coûté de nombreux amis.
B2 noun /ˌɔː.ri.enˈteɪ.ʃən/

orientation

orientation
Meaning
the process of becoming familiar with a new situation or environment
Example
The company provides an orientation for all new employees.
L'entreprise offre une orientation à tous les nouveaux employés.
B2 noun /ˈoʊtˌmiːl/

oatmeal

bouillie d'avoine
Meaning
A type of porridge made from ground oats, often eaten for breakfast.
Example
She eats a bowl of oatmeal every morning for breakfast.
Elle mange un bol de bouillie d'avoine chaque matin au petit-déjeuner.
C1 noun /ˌɑːk.sɪˈmɔːr.ɒn/

oxymoron

oxymore
Meaning
a figure of speech where two contradictory terms are combined
Example
The phrase 'deafening silence' is a classic oxymoron.
L'expression 'silence assourdissant' est un oxymore classique.
B2 noun /ˈɔːɡən/

organ

organe
Meaning
a part of the body that performs a specific function
Example
The heart is an important organ in the human body.
Le cœur est un organe important dans le corps humain.
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 /ˈoʊpiət/

opiate

opiacé
Meaning
a drug containing opium or its derivatives, used to relieve pain or cause sleep
Example
The doctor prescribed an opiate to relieve the patient's pain.
Le docteur a prescrit un opiacé pour soulager la douleur du patient.
C1 adjective/adverb /ˌɒfˈhænd/

offhand

sans réflexion
Meaning
Without previous thought or preparation; casual and sometimes dismissive.
Example
She gave an offhand reply to his serious question.
Elle a donné une réponse sans réfléchir à sa question sérieuse.
C1 verb /ˌaʊtˈstrɪp/

outstrip

dépasser
Meaning
To go faster or do better than someone or something; to surpass.
Example
The company outstripped its competitors in sales last year.
L'entreprise a dépassé ses concurrents en ventes l'année dernière.
C1 adjective /ˌəʊvərˈstɪmjʊˌleɪtɪd/

overstimulated

trop stimule
Meaning
Excessively excited or aroused, overwhelmed by too much stimulus.
Example
Overstimulated minds can lead to burnout and decreased productivity.
Des esprits trop stimulés peuvent conduire à l'épuisement professionnel et à une diminution de la productivité.
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 /oʊliˈændər/

Oleander

oléandre
Meaning
a poisonous evergreen shrub with clusters of white, pink, or red flowers
Example
The beautiful oleander flowers bloomed in the garden despite their toxic nature.
Les belles fleurs d'oléanre ont fleuri dans le jardin malgré leur nature toxique.
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.
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.
C1 noun /ˈoʊ.mən/

Omen

un signe de bonne ou mauvaise chance future
Meaning
an event regarded as a sign of future good or bad luck
Example
Many people consider a black cat crossing your path a bad omen.
Beaucoup de gens considèrent qu'un chat noir traversant votre chemin est un mauvais présage.
B1 adjective /əˈbiː.di.ənt/

Obedient

obéissant
Meaning
willing to comply with orders or instructions; submissive
Example
The obedient student always follows the teacher's instructions.
L'élève obéissant suit toujours les instructions du professeur.
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.
A1 noun /ɒkˈtoʊbər/

october

octobre
Meaning
the tenth month of the year in the Gregorian calendar
Example
The weather becomes cooler in October.
Le temps devient plus frais en octobre.
B1 verb /ˈɒpəreɪt/

operate

fonctionner
Meaning
to function; to control or manage; to perform surgery
Example
The surgeon will operate on the patient tomorrow.
Le chirurgien opérera le patient demain.
C1 verb /ˈɒs.ɪ.leɪt/

oscillate

se balancer ou se déplacer d'un point à un autre entre deux états
Meaning
To swing or move back and forth between two points or states
Example
The stock market tends to oscillate during uncertain times.
Le marché boursier a tendance à osciller pendant les périodes incertaines.
B2 noun /ˈoʊ.dər/

Odour

odeur
Meaning
a distinctive smell, especially an unpleasant one
Example
The odour of fresh bread filled the kitchen.
L'odeur du pain frais remplissait la cuisine.
B2 noun /ˈaʊt.breɪk/

Out-break

épidémie
Meaning
a sudden occurrence or eruption of something, especially disease or violence
Example
The outbreak of flu affected many students in the school.
L'épidémie de grippe a touché de nombreux élèves à l'école.
C1 noun /ˈɑn.set/

Onset

début; commencement
Meaning
the beginning or early stages of something; the start of a medical condition
Example
The onset of winter brought heavy snowfall.
Le début de l'hiver a apporté de fortes chutes de neige.
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.
C2 noun /oʊˈbeɪsəns/

obeisance

révérence
Meaning
A gesture of respect such as a bow or curtsy.
Example
They bowed in obeisance to the king.
Ils se sont inclinés en révérence au roi.
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.
C1 verb /aʊst/

oust

évincer
Meaning
To remove someone from a position or place of power or authority.
Example
The rebels ousted the dictator from power.
Les rebelles ont évincé le dictateur du pouvoir.
C2 adjective /ˈɒkjʊlər/

ocular

oculaire
Meaning
Relating to the eye or vision.
Example
The patient was referred to a specialist for ocular treatment.
Le patient a été orienté vers un spécialiste pour un traitement oculaire.
B2 noun /ˌɒb.zəˈveɪ.ʃənz/

observations

observation
Meaning
The action or process of observing something carefully.
Example
Observations of distant galaxies provide new insights.
Les observations des galaxies lointaines offrent de nouvelles perspectives.
C2 adjective /ˈɑːsɪˌfaɪd/

ossified

transformé en os, rigide
Meaning
Turned into bone or become rigid; unwilling to change.
Example
The company had an ossified management structure that resisted innovation.
L'entreprise avait une structure de gestion rigide qui résistait à l'innovation.
B2 noun oʊˈbiː.sə.t̬i

obesity

obésité
Meaning
The condition of being grossly fat or overweight.
Example
Obesity increases the risk of diabetes and heart disease.
L'obésité augmente le risque de diabète et de maladies cardiaques.
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 verb ˈɑːb.fə.skeɪt

obfuscate

obscurcir, embrouiller, mystifier
Meaning
Render obscure, unclear, or unintelligible.
Example
Politicians often obfuscate facts to mislead people.
Les politiciens obfusquent souvent les faits pour induire les gens en erreur.
C2 noun /ˈɒfərtɔːri/

offertory

offrande
Meaning
The part of a religious service when offerings are collected; the offering itself.
Example
The offertory was taken during the Sunday service.
L'offrande a été prise pendant le service du dimanche.
B2 verb /ˌoʊvərˈsiː/

oversee

superviser
Meaning
to supervise or watch over something; to manage and direct
Example
The manager will oversee the entire construction project.
Le gestionnaire supervisera l'ensemble du projet de construction.
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.
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.
B2 noun /ˈɔːɡənɪzəm/

organism

organisme
Meaning
a living thing that has an organized structure and can grow and reproduce
Example
Every organism needs water to survive.
Chaque organisme a besoin d'eau pour survivre.
C1 adjective /əˈkʌlt/

occult

occultes
Meaning
Relating to mysterious, supernatural, or magical powers and practices.
Example
She had always been fascinated by the occult and its hidden knowledge.
Elle a toujours été fascinée par l'occulte et sa connaissance cachée.
B2 noun /əbˈdʒek.ʃən/

Objection

objection; désaccord; protestation;
Meaning
an expression of disagreement or disapproval; a reason for disagreeing
Example
The lawyer raised an objection during the trial.
L'avocat a soulevé une objection pendant le procès.
C1 adverb /ˈaʊtwədli/

Outwardly

extérieurement; en apparence;
Meaning
on the surface; externally; in appearance
Example
Outwardly, he seemed calm, but inside he was nervous.
Extérieurement, il semblait calme, mais à l'intérieur, il était nerveux.
C1 noun /ˈaʊtˌkraɪ/

outcry

protestation
Meaning
A strong expression of public anger or disapproval.
Example
The decision sparked an outcry among the citizens.
La décision a déclenché une protestation parmi les citoyens.
C1 noun /əbˈzɜːrvətɔːri/

observatory

observatoire
Meaning
A building equipped for observing astronomical or meteorological events.
Example
The observatory is open to the public on weekends.
L'observatoire est ouvert au public le week-end.
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.
C1 noun ˌɒp.tɪ.maɪˈzeɪ.ʃən

optimization

optimisation
Meaning
Improving processes to increase performance and efficiency.
Example
SEO optimization helps websites rank higher on search engines.
L'optimisation SEO aide les sites web à se classer plus haut dans les moteurs de recherche.
B1 adjective /ˌoʊvərˈsiːz/

overseas

à l'étranger
Meaning
in or to a foreign country across the sea
Example
He went overseas for higher education.
Il est allé à l'étranger pour ses études supérieures.
C2 noun /oʊˈbleɪʃən/

oblation

oblation
Meaning
a religious offering, especially of bread or wine to God
Example
The priest placed the oblation on the altar during the ceremony.
Le prêtre a placé l'oblation sur l'autel pendant la cérémonie.
C1 adjective /ˌoʊvərˈbɛrɪŋ/

overbearing

autoritaire
Meaning
unpleasantly or arrogantly domineering
Example
His overbearing attitude made everyone uncomfortable.
Son attitude autoritaire a mis tout le monde mal à l'aise.
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.
C1 adjective /ˈɔːrθədɑːks/

orthodox

orthodoxe
Meaning
conforming to traditional beliefs or practices
Example
He comes from a very orthodox family.
Il vient d'une famille très orthodoxe.
C1 adjective /ˈɔːrdɪnəl/

ordinal

ordinal
Meaning
Relating to the order or position of something in a sequence (first, second, third, etc.).
Example
The ordinal number 'third' indicates position in a sequence.
Le numéro ordinal 'troisième' indique la position dans une séquence.
B1 noun /əˈkeɪ.ʒən/

Occasion

occasion; événement spécial
Meaning
a particular time or instance of an event; a special celebration
Example
Their wedding was a joyous occasion.
Leur mariage était une occasion joyeuse.
B2 adverb /ˈaʊtraɪt/

Outright

directement; complètement; sans réserve
Meaning
completely; directly; without reservation or concealment
Example
She rejected the proposal outright.
Elle a rejeté la proposition directement.
C1 noun /ˈɔːrkɪd/

Orchid

orchidée
Meaning
a diverse family of flowering plants known for their exotic and often fragrant flowers
Example
The white orchid on the windowsill bloomed for months.
L'orchidée blanche sur le rebord de la fenêtre a fleuri pendant des mois.
C2 verb /ˈoʊɡəl/

ogle

regarder avec désir
Meaning
To look at someone with obvious sexual interest.
Example
He kept ogling the models on the runway.
Il n'arrêtait pas de regarder les mannequins sur le podium.
B1 adjective /ˈɔːɡənaɪzd/

organized

organisé
Meaning
Arranged in a systematic way, especially on a large scale.
Example
An organized approach to work increases productivity and reduces stress.
Une approche organisée du travail augmente la productivité et réduit le stress.
C1 noun /ˈoʊvərˌsiːər/

overseer

superviseur
Meaning
a person who supervises work or workers; a manager
Example
The overseer made sure the workers followed safety rules.
Le superviseur s'est assuré que les travailleurs respectaient les règles de sécurité.
B2 verb /ˌoʊvərˈteɪk/

overtake

doubler
Meaning
to catch up with and pass someone or something; to surpass
Example
The runner managed to overtake his competitor in the final lap.
Le coureur a réussi à doubler son concurrent lors du dernier tour.
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.
C2 adjective /ˈɔːrəˌtʌnd/

orotund

voix profonde et claire
Meaning
full, rich, and clear in sound; pompous in style
Example
The actor's orotund voice filled the theater.
La voix profonde de l'acteur a rempli le théâtre.
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.
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 adjective ˌɒp.ərˈeɪ.ʃən.əl

operational

opérationnel
Meaning
In working order; ready for use.
Example
The space project will be operational by 2025.
Le projet spatial sera opérationnel d'ici 2025.
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.
A2 adverb; noun /ˌaʊtˈdɔːrz/

outdoors

à l’extérieur
Meaning
outside a building; the natural environment outside
Example
We spent the whole afternoon outdoors enjoying the fresh air.
Nous avons passé tout l’après-midi à l’extérieur à profiter de l’air frais.
C2 adjective /ˌɒbsəˈlɛsnt/

obsolescent

obsolète
Meaning
Becoming outdated or on the way to becoming obsolete.
Example
The obsolescent technology could not compete with modern devices.
La technologie obsolète ne pouvait pas concurrencer les appareils modernes.
C1 verb /uːz/

ooze

suinter
Meaning
to slowly flow or leak out through small openings or pores
Example
Blood began to ooze from the small cut.
Le sang a commencé à suinter de la petite coupure.
C1 verb /ˌoʊvərˈruːl/

overrule

rejeter
Meaning
to reject or disallow by exercising one's superior authority; to override a decision
Example
The judge overruled the objection from the defense attorney.
Le juge a rejeté l'objection de l'avocat de la défense.
B2 verb /ˌoʊvərˈwɛlm/

overwhelm

accabler
Meaning
to overpower someone emotionally or physically; to be too much to handle
Example
She was overwhelmed with gratitude after receiving the help.
Elle était submergée de gratitude après avoir reçu de l'aide.
C1 verb /əbˈstrʌkt/

obstruct

obstruer
Meaning
to block or hinder progress; to prevent or impede movement
Example
The fallen tree obstructed the road for several hours.
L'arbre tombé obstruait la route pendant plusieurs heures.
B2 noun /ˌaʊtˈsaɪdə(r)/

outsider

étranger
Meaning
a person who is not accepted as a member of a particular group or community
Example
As a new student, she often felt like an outsider at school.
En tant que nouvelle étudiante, elle se sentait souvent comme une étrangère à l'école.
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.
B2 adjective /ˈɒnɡəʊɪŋ/

ongoing

en cours
Meaning
continuing; still in progress
Example
The ongoing project will finish next month.
Le projet en cours sera terminé le mois prochain.
C1 verb /ˈɒp.tɪ.maɪz/

optimize

optimiser
Meaning
To make the best or most effective use of a situation, opportunity, or resource.
Example
The company is working to optimize its supply chain.
L'entreprise travaille à optimiser sa chaîne d'approvisionnement.
C2 noun /ˈɔːfəl/

offal

abats
Meaning
the internal organs and entrails of an animal used as food; waste parts
Example
The butcher prepared sausages using pork offal.
Le boucher a préparé des saucisses en utilisant des abats de porc.
C1 adjective /əˈblɪɡ.ə.tɔː.ri/

obligatory

obligatoire
Meaning
Required by a legal, moral, or other rule; compulsory.
Example
Wearing a seatbelt is obligatory in most countries.
Porter une ceinture de sécurité est obligatoire dans la plupart des pays.
B2 verb /ˌoʊvərˈlʊk/

overlook

ignorer
Meaning
to fail to notice or consider something; to have a view from above
Example
It's easy to overlook small details when you're in a hurry.
Il est facile de passer à côté des petits détails quand on est pressé.
B2 noun/verb /ˈaʊtreɪdʒ/

outrage

indignation
Meaning
A strong feeling of anger and shock; to arouse anger or shock.
Example
The unfair decision caused public outrage.
La décision injuste a provoqué une indignation publique.
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.
B2 adjective; verb (past participle) /ˈɒkjʊpaɪd/

occupied

occupé
Meaning
being in use or taken; filled or lived in; controlled or held by force
Example
The room is occupied, so please wait outside.
La chambre est occupée, veuillez attendre dehors.
B2 noun /ɔːˈræŋ.ʊˌtæŋ/

Orang-Outang

orang-outang
Meaning
a large arboreal ape with long reddish hair, long arms, and hooked hands and feet, native to Borneo and Sumatra
Example
The orangutan swings gracefully through the forest canopy.
L'orang-outang se balance gracieusement à travers la canopée de la forêt.
B2 verb /əˈblaɪdʒ/

oblige

obliger
Meaning
to compel or require someone to do something; to help or do a favor
Example
I would be happy to oblige you with the information you need.
Je serais heureux de vous obliger avec les informations dont vous avez besoin.
A1 conjunction /ɔːr/

or

ou
Meaning
used to link alternatives
Example
You can have tea or coffee.
Vous pouvez prendre du thé ou du café.
B2 noun /ˈaʊtbɜːrst/

outburst

éruption soudaine de colère ou d'émotion
Meaning
a sudden release of strong emotion or activity
Example
She had an angry outburst during the meeting.
Elle a eu un accès de colère pendant la réunion.
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.
C1 verb /ɔːrˈdeɪn/

ordain

ordonner
Meaning
To officially make someone a priest or minister; to decree or order something officially.
Example
The bishop will ordain three new priests this Sunday.
L'évêque ordonnera trois nouveaux prêtres ce dimanche.
B1 noun /ˈɒbstəkəlz/

obstacles

obstacles
Meaning
Things that block one's way or prevent or hinder progress.
Example
Obstacles in life can often lead to valuable lessons.
Les obstacles dans la vie mènent souvent à des leçons précieuses.
A2 noun /əˈlɪmpɪks/

olympics

Jeux Olympiques
Meaning
an international sports competition held every four years with athletes from many countries
Example
The Olympics bring athletes from all over the world together.
Les Jeux Olympiques réunissent des athlètes du monde entier.
C1 adjective /ˌaʊtˈlændɪʃ/

outlandish

bizarre
Meaning
Looking or sounding bizarre or unfamiliar; strange.
Example
He wore an outlandish costume to the festival.
Il portait un costume bizarre au festival.
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.
A2 noun /ɔɪl/

Oil

huile
Meaning
a viscous liquid derived from petroleum or plants, used for cooking or fuel
Example
Heat the oil in a pan before adding the vegetables.
Chauffez l'huile dans une poêle avant d'ajouter les légumes.
A1 preposition, adverb /ˈoʊvər/

over

sur
Meaning
across, on top of, or beyond
Example
The book is lying over the table.
Le livre est posé sur la table.
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.
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 /ˈɔːr.ə.tɔːr.i/

oratory

art oratoire
Meaning
The art of public speaking; skilled and confident delivery of speeches to an audience.
Example
His exceptional oratory skills won him the debate competition.
Ses compétences exceptionnelles en oratoire lui ont permis de gagner la compétition de débat.