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C1 verb /ˈɒfsɛt/

offset

ausgleichen
Meaning
To counterbalance or compensate for something.
Example
The company's losses were offset by gains in other departments.
Die Verluste des Unternehmens wurden durch Gewinne in anderen Abteilungen ausgeglichen.
B2 noun /ɒpˈtɪʃən/

optician

Optiker
Meaning
A person who makes or sells glasses and contact lenses.
Example
The optician adjusted my new glasses to fit better.
Der Optiker passte meine neuen Brillen so an, dass sie besser passten.
B2 noun /ˈaʊtˌsɛt/

outset

Anfang
Meaning
the beginning or start of something
Example
From the outset, the project seemed ambitious but achievable.
Vom Anfang an schien das Projekt ehrgeizig, aber erreichbar.
B1 noun /ˌɒpəˈreɪʃən/

operation

operation
Meaning
an act or process of functioning or operating
Example
The hospital performed a successful operation.
Das Krankenhaus führte eine erfolgreiche Operation durch.
C1 adjective /ˌɒstɛnˈteɪʃəs/

ostentatious

protzig
Meaning
Characterized by a showy or pretentious display intended to impress others.
Example
He wore an ostentatious gold chain to the party.
Er trug eine protzige goldene Kette zur Party.
A2 adjective /ˈɑp.ə.zɪt/

Opposite

entgegengesetzt; völlig unterschiedlich; einander zugewandt; umgekehrt;
Meaning
Contrary; completely different; facing each other; reverse;
Example
They have opposite views on politics but remain good friends.
Sie haben gegensätzliche Ansichten zur Politik, bleiben aber gute Freunde.
C1 verb /ɔːrˈdeɪn/

ordain

ordnen
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.
Der Bischof wird an diesem Sonntag drei neue Priester ordinieren.
B2 noun /ˌɔː.ri.enˈteɪ.ʃən/

orientation

Orientierung
Meaning
the process of becoming familiar with a new situation or environment
Example
The company provides an orientation for all new employees.
Das Unternehmen bietet allen neuen Mitarbeitern eine Orientierung an.
C1 verb /ˌaʊtˈduː/

outdo

übertreffen
Meaning
To do better than someone else; to surpass.
Example
She always tries to outdo her classmates in exams.
Sie versucht immer, ihre Klassenkameraden in Prüfungen zu übertreffen.
B1 adverb /əˈkeɪʒənəli/

Occasionally

gelegentlich; von Zeit zu Zeit;
Meaning
sometimes; from time to time; not regularly
Example
I occasionally visit my grandmother on weekends.
Ich besuche meine Großmutter gelegentlich am Wochenende.
B2 adverb /ˈoʊpənli/

Openly

offen; öffentlich
Meaning
in a frank and honest way; without concealment; publicly
Example
She spoke openly about her struggles with mental health.
Sie sprach offen über ihre Kämpfe mit der psychischen Gesundheit.
C1 adjective /ˈɑp.ər.ə.tɪv/

Operative

aktiv; in Kraft; funktionierend; betriebsbereit;
Meaning
Functioning; in effect; working; active;
Example
The new safety protocols became operative immediately after the accident.
Die neuen Sicherheitsprotokolle wurden unmittelbar nach dem Unfall betriebsbereit.
B2 adjective /əˈpəʊzd/

opposed

entgegengesetzt
Meaning
being against or in disagreement with something
Example
She is strongly opposed to animal testing.
Sie ist entschieden gegen Tierversuche.
C1 noun /ˌɑːk.sɪˈmɔːr.ɒn/

oxymoron

Oxymoron
Meaning
a figure of speech where two contradictory terms are combined
Example
The phrase 'deafening silence' is a classic oxymoron.
Der Ausdruck 'ohrenbetäubende Stille' ist ein klassisches Oxymoron.
A2 noun /ˈɒf.ɪs/

office

Büro
Meaning
a room or building where people work, usually at desks
Example
She left the office early to attend a family event.
Sie verließ das Büro früh, um an einer Familienveranstaltung teilzunehmen.
C2 noun /ˈɔːrdʒi/

orgy

Orgie
Meaning
A wild party involving excessive indulgence, especially of a sexual nature.
Example
The novel described a scandalous orgy in a wealthy mansion.
Der Roman beschrieb eine skandalöse Orgie in einer wohlhabenden Villa.
C1 adjective /əˈblaɪdʒɪŋ/

obliging

hilfsbereit
Meaning
Willing to help or do favors; accommodating.
Example
The staff at the hotel were very obliging and friendly.
Das Personal im Hotel war sehr hilfsbereit und freundlich.
C2 noun /əbˈstɛtrɪks/

obstetrics

Geburtskunde
Meaning
The branch of medicine dealing with childbirth and care of women giving birth.
Example
She is studying obstetrics to become a specialist in childbirth.
Sie studiert Geburtskunde, um eine Spezialistin für Geburtshilfe zu werden.
C2 noun /ˈɑb.lə.kwi/

Obloquy

harte Kritik oder verbaler Missbrauch; öffentliche Verurteilung
Meaning
harsh criticism or verbal abuse; strong public condemnation
Example
The politician faced obloquy after the scandal.
Der Politiker sah sich nach dem Skandal scharfer Kritik ausgesetzt.
C2 noun /ˈəʊpəs/

opus

kreatives Werk
Meaning
A creative work, especially a large and important piece of music or art.
Example
The composer considered the symphony his greatest opus.
Der Komponist betrachtete die Sinfonie als sein größtes kreatives Werk.
A2 adjective /ɒd/

Odd

seltsam; ungewöhnlich; anders als das, was normal oder erwartet wird
Meaning
strange; unusual; different from what is normal or expected
Example
That's an odd way to solve the problem.
Das ist eine seltsame Art, das Problem zu lösen.
B2 adjective /ˌɑːp.təˈmɪs.tɪk/

optimistic

optimistisch
Meaning
hopeful and confident about the future
Example
She is optimistic about the success of her new project.
Sie ist optimistisch über den Erfolg ihres neuen Projekts.
C2 noun /ˈɒbsɪkwi/

obsequy

Begräbnisritus
Meaning
A funeral rite, usually used in plural form obsequies.
Example
The village gathered for the obsequy of their beloved teacher.
Das Dorf versammelte sich für das Begräbnisritus ihres geliebten Lehrers.
B2 verb /əˈblaɪdʒ/

oblige

verpflichten
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.
Ich würde mich freuen, Ihnen die benötigten Informationen zu geben.
B2 noun /wʌn θɜːd/

one-third

ein Drittel
Meaning
one part of something that is divided into three equal parts
Example
One-third of the class was absent today.
Ein Drittel der Klasse war heute abwesend.
A1 preposition /ɒn/

on

auf
Meaning
physically in contact with and supported by a surface
Example
The book is on the table.
Das Buch liegt auf dem Tisch.
C1 adjective /ˌaʊtˈlændɪʃ/

outlandish

seltsam
Meaning
Looking or sounding bizarre or unfamiliar; strange.
Example
He wore an outlandish costume to the festival.
Er trug ein seltsames Kostüm zum Festival.
C1 verb /əˈfɪʃieɪt/

officiate

leiten
Meaning
To perform official duties, especially in a ceremony or as a referee.
Example
The priest will officiate the wedding ceremony.
Der Priester wird die Hochzeitszeremonie leiten.
B1 verb /əˈkɜːr/

occur

auftreten
Meaning
to happen or take place; to be found or present
Example
The accident occurred at the intersection during rush hour.
Der Unfall trat an der Kreuzung während der Stoßzeit auf.
C1 adjective /ˈɒptɪk/

optic

optisch
Meaning
Relating to the eye or vision.
Example
The optic nerve carries signals from the eye to the brain.
Der optische Nerv überträgt Signale vom Auge zum Gehirn.
A1 noun /ɒkˈtoʊbər/

october

Oktober
Meaning
the tenth month of the year in the Gregorian calendar
Example
The weather becomes cooler in October.
Im Oktober wird das Wetter kühler.
A1 adjective /ˈʌðər/

other

anderer
Meaning
used to refer to something different from the one already mentioned or known
Example
I don't want this one, I will take the other one.
Ich will dieses nicht, ich werde das andere nehmen.
B2 verb /ˌoʊvərˈtɜrn/

overturn

umkehren / eine Entscheidung aufheben
Meaning
to turn something upside down or to reverse a decision or judgment
Example
The court decided to overturn the previous ruling.
Das Gericht entschied sich, das vorherige Urteil aufzuheben.
C1 adjective əʊˈpeɪk

opaque

undurchsichtig, undurchdringlich, schwer zu verstehen
Meaning
Not able to be seen through; not transparent; difficult to understand.
Example
The glass was too opaque to see through.
Das Glas war zu undurchsichtig, um hindurch zu sehen.
B2 noun /ˈɔːɡən/

organ

Organ
Meaning
a part of the body that performs a specific function
Example
The heart is an important organ in the human body.
Das Herz ist ein wichtiges Organ im menschlichen Körper.
B2 verb /ˌoʊvərˈteɪk/

overtake

überholen
Meaning
to catch up with and pass someone or something; to surpass
Example
The runner managed to overtake his competitor in the final lap.
Der Läufer konnte seinen Konkurrenten in der letzten Runde überholen.
C1 noun /oʊθ/

Oath

Eid
Meaning
a solemn promise or declaration; a sworn statement
Example
The doctor took an oath to help patients.
Der Arzt legte ein Eid ab, den Patienten zu helfen.
B2 noun /ˈaʊt.saɪ.dər/

Out-sider

Außenseiter
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.
Als Außenseiter fand er es schwierig, ihre Traditionen zu verstehen.
B1 noun /ˈɒbstəkəlz/

obstacles

Hindernisse
Meaning
Things that block one's way or prevent or hinder progress.
Example
Obstacles in life can often lead to valuable lessons.
Hindernisse im Leben führen oft zu wertvollen Lektionen.
B2 adjective /ˈɔː.də.li/

Orderly

ordentlich; systematisch; friedlich
Meaning
well-organized; systematic; peaceful
Example
Please keep your desk orderly and clean.
Bitte halten Sie Ihren Schreibtisch ordentlich und sauber.
A1 adverb /aʊt/

out

draußen
Meaning
moving or appearing away from the inside or center; not at home or present
Example
He stepped out of the room quietly.
Er trat leise aus dem Raum.
C2 adjective /ˈɑːsɪˌfaɪd/

ossified

in Knochen verwandelt, starr
Meaning
Turned into bone or become rigid; unwilling to change.
Example
The company had an ossified management structure that resisted innovation.
Das Unternehmen hatte eine starre Managementstruktur, die Innovationen widerstand.
B1 noun /aʊl/

Owl

Eule
Meaning
a nocturnal bird of prey with large eyes and a hooked beak
Example
The owl hooted softly in the darkness of the forest.
Die Eule rief leise in der Dunkelheit des Waldes.
C2 adjective /əˈrækjələr/

oracular

orakular
Meaning
Resembling an oracle; giving wise, mysterious, or prophetic statements
Example
Her oracular words left the audience deep in thought.
Ihre orakularen Worte ließen das Publikum tief nachdenken.
B1 noun /ˌɑk.jəˈpeɪ.ʃən/

Occupation

Beruf; Beschäftigung; Übernahme
Meaning
a job or profession; the action of taking control of a place
Example
Teaching is her chosen occupation.
Lehren ist ihr gewählter Beruf.
C2 adjective /ˈɒf.biːt/

offbeat

ungewöhnlich
Meaning
Unusual, unconventional, or different from the norm.
Example
She has a very offbeat sense of humor.
Sie hat einen sehr ungewöhnlichen Sinn für Humor.
C1 noun /ɒpˈtɒmɪtrɪst/

optometrist

Optometrist
Meaning
A healthcare professional who examines eyes and prescribes corrective lenses.
Example
The optometrist prescribed new glasses for her.
Der Optometrist verschrieb ihr neue Brillen.
B2 adjective /ˌɔːɡənaɪˈzeɪʃənəl/

organizational

organisatorisch
Meaning
relating to the structure or arrangement of a company or group
Example
He works on improving the organizational structure of the company.
Er arbeitet daran, die organisatorische Struktur des Unternehmens zu verbessern.
A2 adverb /ˈɒbviəsli/

obviously

offensichtlich
Meaning
in a way that is easily perceived or understood; clearly
Example
Obviously, he didn’t read the instructions.
Offensichtlich hat er die Anweisungen nicht gelesen.
A2 noun /ˈoʊpənɪŋ/

opening

Eröffnung
Meaning
an act or instance of beginning something
Example
The opening of the new store was a huge success.
Die Eröffnung des neuen Geschäfts war ein großer Erfolg.
C1 noun /ˈɔːrdɪnəns/

ordinance

verordnung
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.
Der Stadtrat verabschiedete eine Verordnung, die das Rauchen in öffentlichen Parks verbietet.
C1 verb /ˌoʊvərˈriːtʃ/

overreach

Überforderung
Meaning
to go beyond what is proper, acceptable, or achievable; to overextend
Example
The politician overreached by making promises he couldn't keep.
Der Politiker hat sich übernommen, indem er Versprechungen gemacht hat, die er nicht einhalten konnte.
C1 noun /ɔːr/

Oar

Ruder
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.
Er tauchte das Ruder ins Wasser und zog das Boot vorwärts.
B1 noun ˌɒpəˈtjuːnɪtiz

opportunities

Gelegenheiten
Meaning
A set of circumstances that makes it possible to do something; chances for advancement or success.
Example
Opportunities for jobs decreased.
Die Gelegenheiten für Jobs nahmen ab.
C2 verb /ˈɑːbdʒərˌɡeɪt/

objurgate

heftig schimpfen
Meaning
to scold or rebuke severely
Example
The teacher objurgated the student for being dishonest.
Der Lehrer schimpfte mit dem Schüler, weil er unehrlich war.
C2 adjective /əbˈstrɛpərəs/

obstreperous

laut und schwer zu kontrollieren
Meaning
Noisy and difficult to control.
Example
The obstreperous students disrupted the class.
Die lauten Studenten störten die Klasse.
C1 adjective /ˌoʊvərˈrɔt/

overwrought

aufgeregt / übermäßig nervös
Meaning
extremely agitated or nervous; excessively elaborate
Example
She was too overwrought to speak clearly after the accident.
Sie war nach dem Unfall zu aufgeregt, um klar zu sprechen.
C1 adjective /ˌɒmnɪˈprezənt/

omnipresent

omnipräsent
Meaning
(of God) present everywhere at the same time.
Example
Social media has become an omnipresent force in modern society.
Soziale Medien sind zu einer omnipräsenten Kraft in der modernen Gesellschaft geworden.
B2 adjective /əˈfen.sɪv/

Offensive

beleidigend; insultierend; aggressiv
Meaning
causing displeasure or resentment; insulting; aggressive
Example
His offensive remarks hurt everyone's feelings.
Seine beleidigenden Bemerkungen verletzten die Gefühle aller.
A2 adjective /ˈɔː.dɪ.nər.i/

Ordinary

gewöhnlich; normal; nicht besonders
Meaning
normal; usual; not special
Example
It was just an ordinary day at the office.
Es war einfach ein gewöhnlicher Tag im Büro.
C2 noun /əbˈstrʌkʃənɪst/

obstructionist

Verhinderer
Meaning
a person who deliberately delays or prevents progress by being uncooperative or oppositional
Example
The obstructionist in the committee kept delaying the decision-making process.
Der Verhinderer im Ausschuss verzögerte weiterhin den Entscheidungsfindungsprozess.
B1 verb /əbˈzɜːrv/

observe

beobachten
Meaning
to watch carefully; to notice or perceive something
Example
Scientists observe the behavior of animals in the wild.
Wissenschaftler beobachten das Verhalten von Tieren in der Wildnis.
B1 noun ˈɒk.sɪ.dʒən

oxygen

Sauerstoff. Ein farb- und geruchloses Gas, das für das Leben unerlässlich ist.
Meaning
A colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
Example
Oxygen is vital for life.
Sauerstoff ist für das Leben wichtig.
C1 noun /əbˈzɜːrvətɔːri/

observatory

observatorium
Meaning
A building equipped for observing astronomical or meteorological events.
Example
The observatory is open to the public on weekends.
Das Observatorium ist am Wochenende für die Öffentlichkeit geöffnet.
B1 verb /ˈɒpəreɪtɪŋ/

operating

operierend
Meaning
to control or manage the functioning of something
Example
The company has been operating in this market for five years.
Das Unternehmen arbeitet seit fünf Jahren in diesem Markt.
C1 adjective /oʊˈbiːs/

obese

fettleibig
Meaning
Extremely overweight; having an excessive amount of body fat.
Example
The doctor advised the obese patient to adopt a healthier lifestyle.
Der Arzt riet dem übergewichtigen Patienten, einen gesünderen Lebensstil anzunehmen.
A2 adjective /əˈlɪmpɪk/

olympic

olympisch
Meaning
related to the Olympic Games, a major international sporting event
Example
She trained hard to compete in the Olympic Games.
Sie trainierte hart, um an den Olympischen Spielen teilzunehmen.
C1 adjective /əbˈstrʌk.tɪv/

Obstructive

hemmend
Meaning
deliberately creating difficulties or preventing progress; hindering or blocking something
Example
The obstructive policies hindered economic growth.
Die hemmenden Maßnahmen behinderten das Wirtschaftswachstum.
C2 noun ˈɒpjʊləns

opulence

Opulenz
Meaning
Great wealth or luxuriousness.
Example
The opulence of the mansion was evident in its ornate furnishings.
Die Opulenz des Herrenhauses war in seiner verzierenden Einrichtung offensichtlich.
C1 noun /oʊˈeɪ.sɪs/

Oasis

Oase
Meaning
a fertile spot in a desert where water is found; a pleasant refuge
Example
The travelers found an oasis after days in the desert.
Die Reisenden fanden eine Oase nach mehreren Tagen in der Wüste.
C2 noun /ˈɔɪl.mən/

Oilman

Ölverkäufer
Meaning
a person who works in the oil industry; someone who sells oil or petroleum products
Example
The oilman discovered a new oil field in the desert.
Der Ölverkäufer entdeckte ein neues Ölfeld in der Wüste.
C2 adjective /əbˈsiːkwɪəs/

obsequious

kriecherisch
Meaning
Excessively obedient or attentive in a servile way.
Example
The waiter gave an obsequious bow to every customer.
Der Kellner machte eine kriecherische Verbeugung vor jedem Kunden.
C1 noun /oʊˈbɪt.ʃu.er.i/

Obituary

Nachruf
Meaning
a notice of someone's death published in a newspaper; biographical account of deceased person
Example
The newspaper published his obituary yesterday.
Die Zeitung veröffentlichte gestern seinen Nachruf.
C2 noun /ˌɒstɛnˈteɪʃən/

ostentation

Prunk
Meaning
excessive display of wealth or knowledge intended to attract admiration or envy
Example
The billionaire’s party was full of ostentation and luxury.
Die Party des Milliardärs war voller Prunk und Luxus.
C1 adjective ˈɒk.sɪ.də.tɪv

oxidative

Mit Oxidation verbunden
Meaning
Related to or caused by oxidation, especially cellular damage from free radicals.
Example
Excess stress can lead to oxidative damage in cells.
Übermäßiger Stress kann oxidativen Schaden in Zellen verursachen.
C1 adjective /ˌaʊt əv ðə ˈweɪ/

out-of-the-way

abgelegen oder ungewöhnlich
Meaning
remote or unusual; not in a convenient or usual location
Example
They stayed in an out-of-the-way village.
Sie blieben in einem abgelegenen Dorf.
C1 noun /əbˈstrʌkʃən/

obstruction

hindernis
Meaning
Something that blocks or gets in the way; the action of obstructing.
Example
There was an obstruction on the railway track.
Es gab ein Hindernis auf den Gleisen.
B1 adjective /ˌoʊld ˈfæʃənd/

old-fashioned

altmodisch
Meaning
not modern; belonging to an earlier time
Example
He still wears an old-fashioned hat.
Er trägt immer noch einen altmodischen Hut.
B2 noun /oʊk/

oak

Eiche
Meaning
a large tree that produces acorns and has strong, hard wood
Example
The old oak tree provided shade for the entire yard.
Der alte Eichenbaum spendete Schatten für den ganzen Garten.
B1 adverb /ˈʌðərwaɪz/

Otherwise

anders; sonst
Meaning
in a different way; if not; or else; apart from that
Example
Study hard, otherwise you will fail the exam.
Lerne hart, sonst fällst du durch die Prüfung.
C1 adjective /ˈɒm.ɪ.nəs/

Ominous

unheilvoll; drohend
Meaning
giving the impression that something bad will happen; threatening; foreboding
Example
The dark clouds looked ominous before the storm.
Die dunklen Wolken sahen ominös aus, bevor der Sturm kam.
C2 noun /ɑːlˈfækʃən/

olfaction

Geruchssinn
Meaning
The sense of smell; the process of detecting and perceiving odors.
Example
Dogs have a highly developed sense of olfaction.
Hunde haben einen sehr gut entwickelten Geruchssinn.
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.
Du hast die Option, von zu Hause oder im Büro zu arbeiten.
C1 adjective /ɔːˈneɪt/

ornate

verziert
Meaning
elaborately or highly decorated
Example
The palace hall was filled with ornate furniture and paintings.
Der Palasthalle war mit verzierten Möbeln und Gemälden gefüllt.
B2 noun ˈɒksɪdʒən prəˈdʌkʃən

oxygen production

Sauerstoffproduktion
Meaning
The process of generating oxygen through photosynthesis or other means.
Example
Plants are vital for oxygen production and the maintenance of life.
Pflanzen sind entscheidend für die Sauerstoffproduktion und den Erhalt des Lebens.
C2 noun /ˌɑːbdʒərˈɡeɪʃən/

objurgation

strenge Zurechtweisung
Meaning
a harsh scolding or strong rebuke
Example
His misconduct earned him a severe objurgation from the manager.
Sein Fehlverhalten brachte ihm eine strenge Zurechtweisung vom Manager ein.
B2 noun /ˌɒb.zəˈveɪ.ʃənz/

observations

Beobachtung
Meaning
The action or process of observing something carefully.
Example
Observations of distant galaxies provide new insights.
Beobachtungen von fernen Galaxien liefern neue Einblicke.
A2 noun əˈlɪm.pɪk ɡeɪmz

Olympic Games

olympische spiele
Meaning
The world's largest international sports competition held every four years, bringing together athletes from different countries to compete in various sports.
Example
The Olympic Games bring together the world's top athletes.
Die Olympischen Spiele bringen die besten Athleten der Welt zusammen.
C1 adjective/adverb /ˌɒfˈhænd/

offhand

unüberlegt
Meaning
Without previous thought or preparation; casual and sometimes dismissive.
Example
She gave an offhand reply to his serious question.
Sie gab eine unüberlegte Antwort auf seine ernsthafte Frage.
C1 verb /ˌaʊtˈstrɛtʃ/

outstretch

ausstrecken
Meaning
To extend or stretch something outward.
Example
He outstretched his hand to help her up.
Er streckte seine Hand aus, um ihr zu helfen.
C1 noun /ˈoʊ.mən/

Omen

Vorzeichen für zukünftiges Glück oder Unglück
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.
Viele Menschen betrachten eine schwarze Katze, die ihren Weg kreuzt, als schlechtes Vorzeichen.
C1 noun əˈblɪv.i.ən

oblivion

Vergessenheit, Zerstörung, Verschwinden
Meaning
The state of being unaware or unconscious of what is happening; complete forgetfulness.
Example
His name faded into oblivion over time.
Sein Name verschwand mit der Zeit in der Vergessenheit.
C1 adjective /ˈɔːrθədɑːks/

orthodox

orthodox
Meaning
conforming to traditional beliefs or practices
Example
He comes from a very orthodox family.
Er stammt aus einer sehr orthodoxen Familie.
C1 verb /ˈɒp.tɪ.maɪz/

optimize

optimieren
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.
Das Unternehmen arbeitet daran, seine Lieferkette zu optimieren.
B1 verb /ˈɔːrɡənaɪz/

organize

organisieren
Meaning
to arrange systematically; to plan and coordinate
Example
She organized a surprise party for her friend.
Sie organisierte eine Überraschungsparty für ihre Freundin.
C2 noun /ˈɔːrdnəns/

ordnance

militärische Ausrüstung
Meaning
Military supplies including weapons, ammunition, and combat equipment.
Example
The army stored ordnance in a secure facility outside the city.
Die Armee lagerte militärische Ausrüstung in einer sicheren Einrichtung außerhalb der Stadt.
C1 noun /ˌɑːpərˈtuːnɪst/

opportunist

Opportunist
Meaning
A person who takes advantage of situations for personal gain, often disregarding principles.
Example
He is seen as an opportunist who always puts his interests first.
Er wird als Opportunist gesehen, der immer seine eigenen Interessen an erste Stelle setzt.
C1 verb /ˌoʊvərˈʃædoʊ/

overshadow

überschatten
Meaning
to appear more important or significant than something else, reducing its impact
Example
The scandal overshadowed his achievements.
Der Skandal überschattete seine Erfolge.
B2 noun /ˈɔːkɪstrə/

orchestra

Orchester
Meaning
a large group of musicians playing different instruments together
Example
The orchestra performed beautifully at the concert.
Das Orchester hat beim Konzert wunderschön gespielt.
C2 adjective /ˈoʊ.kən/

oaken

aus Eichenholz
Meaning
made of or resembling oak wood
Example
The villagers gathered around the oaken table in the hall.
Die Dorfbewohner versammelten sich um den Eichentisch in der Halle.
C2 noun /ˈoʊvərlɔːrd/

overlord

Herrscher
Meaning
A ruler, master, or person of great power and authority over others.
Example
The peasants were forced to pay taxes to their overlord.
Die Bauern wurden gezwungen, Steuern an ihren Herrscher zu zahlen.
C2 verb /əbˈvɜːrt/

obvert

umkehren
Meaning
To turn something so as to face in a different direction; in logic, to convert a proposition by negating both subject and predicate.
Example
The teacher asked the students to obvert the statement for practice.
Der Lehrer bat die Schüler, die Aussage zum Üben zu obvertieren.
B2 noun /ˈaʊtbɜːrst/

outburst

plötzlicher Ausbruch von Wut oder Emotion
Meaning
a sudden release of strong emotion or activity
Example
She had an angry outburst during the meeting.
Sie hatte während des Treffens einen wütenden Ausbruch.
B2 noun /ˈɒfərɪŋ/

offering

Angebot
Meaning
something that is given, especially as a gift or contribution
Example
The company’s latest offering is an eco-friendly car.
Das neueste Angebot des Unternehmens ist ein umweltfreundliches Auto.
B2 noun, verb /ˈaʊtlɔː/

outlaw

Gesetzloser
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.
Die Regierung hat beschlossen, die schädliche Praxis zu verbieten.
C2 noun /ˌɔːrnɪˈθɑːlədʒi/

ornithology

Ornithologie
Meaning
the scientific study of birds
Example
She pursued ornithology to understand the migration patterns of birds.
Sie verfolgte die Ornithologie, um die Zugmuster der Vögel zu verstehen.
B2 noun /ˈoʊ.dər/

Odour

Geruch
Meaning
a distinctive smell, especially an unpleasant one
Example
The odour of fresh bread filled the kitchen.
Der Geruch von frischem Brot füllte die Küche.
C1 noun ˌɒk.sɪˈdeɪ.ʃən

oxidation

Oxidation
Meaning
A chemical reaction that involves the combination of a substance with oxygen, often causing deterioration.
Example
Oxidation causes metal surfaces to weaken.
Die Oxidation schwächt Metalloberflächen.
C1 verb /ˌoʊvərˈrʌn/

overrun

überwuchern
Meaning
to spread over or occupy completely; to exceed a limit or time
Example
The garden was overrun with weeds.
Der Garten war von Unkraut überwuchert.
B1 adjective /ˌoʊvərˈsiːz/

overseas

ins Ausland
Meaning
in or to a foreign country across the sea
Example
He went overseas for higher education.
Er ging ins Ausland für höhere Bildung.
B1 adverb /əˈrɪdʒɪnəli/

originally

ursprünglich
Meaning
in the beginning, at first
Example
Originally, she wanted to be a doctor.
Ursprünglich wollte sie Ärztin werden.
A2 adjective/adverb /ˈɒnˌlaɪn/

online

online
Meaning
connected to or available through the internet
Example
I prefer shopping online rather than going to stores.
Ich kaufe lieber online ein, als in Geschäfte zu gehen.
C1 verb /aʊtˈwɪt/

outwit

überlisten
Meaning
to defeat or gain an advantage over someone by being more clever or cunning
Example
The fox managed to outwit the hunters.
Der Fuchs konnte die Jäger überlisten.
B2 verb əbˈzɜːrvd

observed

begehen
Meaning
To celebrate or keep a religious or other festival.
Example
The day is observed annually to raise awareness.
Der Tag wird jährlich begangen, um Bewusstsein zu schaffen.
B2 noun /ˈaʊt.breɪk/

Out-break

Ausbruch
Meaning
a sudden occurrence or eruption of something, especially disease or violence
Example
The outbreak of flu affected many students in the school.
Der Ausbruch der Grippe hat viele Schüler in der Schule betroffen.
C1 noun /ˈaʊtˌkraɪ/

outcry

Protest
Meaning
A strong expression of public anger or disapproval.
Example
The decision sparked an outcry among the citizens.
Die Entscheidung löste einen Protest unter den Bürgern aus.
B2 noun /ˌɑb.zɚˈveɪ.ʃən/

Observation

Beobachtung
Meaning
the action of watching something carefully; a comment or remark
Example
The scientist made careful observations of the experiment.
Der Wissenschaftler machte sorgfältige Beobachtungen des Experiments.
B2 noun /ˈaʊtɪŋ/

outing

Ausflug
Meaning
a short trip or excursion, often for leisure or enjoyment
Example
They had a lovely outing at the beach last weekend.
Sie hatten einen schönen Ausflug zum Strand am letzten Wochenende.
B2 noun /ˈɔr.fən/

Orphan

Waisenkind
Meaning
a child whose parents are dead; someone without protective support
Example
The orphan was adopted by a loving family.
Das Waisenkind wurde von einer liebevollen Familie adoptiert.
A1 preposition, adverb /ˈoʊvər/

over

über
Meaning
across, on top of, or beyond
Example
The book is lying over the table.
Das Buch liegt über dem Tisch.
B2 adjective /ˌoʊvərˈwɛlmɪŋ/

overwhelming

überwältigend
Meaning
Very intense; overpowering.
Example
Large tasks can feel overwhelming.
Große Aufgaben können überwältigend wirken.