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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.
B2 noun /ˈɔɪ.stər/

Oyster

Auster
Meaning
a type of shellfish that can be eaten and sometimes contains pearls
Example
She ordered fresh oysters at the seafood restaurant.
Sie bestellte frische Austern im Meeresfrüchte-Restaurant.
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.
A2 noun /ˈoʊ.nər/

Owner

Eigentümer
Meaning
a person who owns something; someone who has legal possession of property
Example
The owner of the restaurant greeted us warmly.
Der Eigentümer des Restaurants begrüßte uns herzlich.
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.
C2 verb /əbˈtruːd/

obtrude

aufdrängen
Meaning
to force oneself or one's ideas into a situation uninvited or inappropriately
Example
He didn’t want to obtrude into their private conversation.
Er wollte nicht in ihr privates Gespräch aufdrängen.
B2 noun /əˈfɛns/

offense

Vergehen
Meaning
an illegal act; a crime
Example
The offense was committed in broad daylight.
Das Vergehen wurde bei Tageslicht begangen.
C1 noun /ˌoʊvərprəˈdʌkʃən/

overproduction

Überproduktion
Meaning
The act of producing more of something than is needed or can be consumed.
Example
The economic crisis was caused by the overproduction of goods.
Die Wirtschaftskrise wurde durch die Überproduktion von Gütern verursacht.
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.
A1 adjective /oʊld/

old

alt
Meaning
having lived for a long time; not new or young
Example
He still drives his old car.
Er fährt immer noch sein altes Auto.
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 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.
B1 adjective /əˈrɪdʒ.ɪ.nəl/

Original

original; primär; authentisch
Meaning
first; fundamental; primary; authentic
Example
This is the original document, not a copy.
Dies ist das Originaldokument, keine Kopie.
C1 noun /ˈɔɪntmənt/

ointment

Salbe
Meaning
A smooth, oily substance applied to the skin for healing or soothing.
Example
The doctor prescribed an ointment for the burn on his arm.
Der Arzt verschrieb eine Salbe für die Verbrennung an seinem Arm.
B2 noun /ˈɒt.ər/

Otter

Otter
Meaning
a mammal with webbed feet that lives near water and feeds on fish
Example
The playful otter swam gracefully in the river.
Der verspielte Otter schwamm anmutig im Fluss.
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.
A2 adjective /ˈaʊtdɔːr/

outdoor

im Freien
Meaning
situated, existing, or done outside a building
Example
We planned an outdoor picnic for the weekend.
Wir haben ein Picknick im Freien für das Wochenende geplant.
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.
C1 adjective /əˈprɛs.ɪv/

Oppressive

unterdrückend
Meaning
Harsh and authoritarian; overwhelming; causing distress; tyrannical;
Example
The oppressive heat made it difficult to work outside during the summer.
Die drückende Hitze erschwerte die Arbeit im Freien während des Sommers.
A1 interjection /oʊ/

oh

Oh
Meaning
used to express surprise, realization, or understanding
Example
Oh, I didn't know you were here!
Oh, ich wusste nicht, dass du hier bist!
B2 adjective /ˈaʊtˌɡoʊɪŋ/

outgoing

gesellig
Meaning
Friendly and sociable; inclined to mix with others.
Example
He is an outgoing person who loves meeting new people.
Er ist eine gesellige Person, die es liebt, neue Leute zu treffen.
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.
C1 noun /ˈoʊvərˌsiːər/

overseer

Aufseher
Meaning
a person who supervises work or workers; a manager
Example
The overseer made sure the workers followed safety rules.
Der Aufseher stellte sicher, dass die Arbeiter die Sicherheitsregeln befolgten.
B2 verb /oʊˈmɪt/

omit

weglassen
Meaning
to leave out or exclude; to fail to include something
Example
Please don't omit any important details from your report.
Bitte lassen Sie keine wichtigen Details in Ihrem Bericht aus.
C2 adjective /əˈfɪʃəs/

officious

aufdringlich
Meaning
Excessively eager to offer unwanted help or advice; meddlesome.
Example
The officious guard kept interrupting the visitors with unnecessary instructions.
Der aufdringliche Wächter unterbrach die Besucher mit unnötigen Anweisungen.
B2 adjective /ˈɒp.ʃən.əl/

Optional

optional
Meaning
not compulsory; left to choice
Example
Wearing a tie is optional for this event.
Das Tragen einer Krawatte ist für diese Veranstaltung optional.
B2 adverb /ˈaʊtraɪt/

Outright

direkt; vollständig; ohne Vorbehalt
Meaning
completely; directly; without reservation or concealment
Example
She rejected the proposal outright.
Sie lehnte den Vorschlag direkt ab.
C1 noun ˈaʊt.sɔːr.sɪŋ

outsourcing

Auslagerung
Meaning
The practice of having certain job functions done outside a company instead of having an in-house department or employee handle them.
Example
Many companies use outsourcing to reduce labor costs.
Viele Unternehmen nutzen Outsourcing, um die Arbeitskosten zu senken.
C1 noun /ˈɔr.i.ənt/

Orient

Orient, insbesondere die Länder Ostasiens
Meaning
the East, especially countries of eastern Asia; to determine one's position or direction
Example
Many spices come from the Orient.
Viele Gewürze kommen aus dem Orient.
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 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.
C2 adjective /ˈɒpjʊlənt/

opulent

opulent
Meaning
Ostentatiously rich, luxurious, or lavish.
Example
They hosted an opulent wedding with gold decorations.
Sie veranstalteten eine opulente Hochzeit mit goldenen Dekorationen.
C1 noun /oʊˈmɪʃ.ən/

Omission

Auslassung; Unterlassung
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.
Die Auslassung seines Namens von der Liste war absichtlich.
C1 verb /ˌoʊvərˈθroʊ/

overthrow

Glück
Meaning
To remove a leader or government from power, often by force.
Example
The rebels planned to overthrow the corrupt regime.
Sie konnte ihr Glück nicht verbergen, als sie den Preis erhielt.
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.
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.
C2 noun /ˈɔːfəl/

offal

Innereien
Meaning
the internal organs and entrails of an animal used as food; waste parts
Example
The butcher prepared sausages using pork offal.
Der Metzger bereitete Würste mit Schweineinnereien zu.
A2 verb /oʊˈbeɪ/

obey

gehorchen
Meaning
to follow orders or instructions; to comply with rules
Example
Children should obey their parents and teachers.
Kinder sollten ihren Eltern und Lehrern gehorchen.
C2 noun /ˈoʊɡər/

ogre

Oger
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.
Die Dorfbewohner fürchteten den Oger, der im dunklen Wald lebte.
C1 adverb /ˈaʊtwədli/

Outwardly

äußere Erscheinung; nach außen hin;
Meaning
on the surface; externally; in appearance
Example
Outwardly, he seemed calm, but inside he was nervous.
Äußerlich schien er ruhig zu sein, aber innerlich war er nervös.
A2 noun /ˈɒpərə/

opera

Oper
Meaning
a dramatic performance in which the actors sing most of their lines
Example
We watched a beautiful opera at the theater last night.
Wir haben gestern Abend im Theater eine schöne Oper gesehen.
B2 noun /ɑːks/

Ox

Ochse
Meaning
a large strong animal used for pulling heavy loads or plowing fields
Example
The farmer used an ox to plow the field.
Der Bauer benutzte einen Ochsen, um das Feld zu pflügen.
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.
B2 adverb /ˈɒdli/

oddly

seltsamerweise
Meaning
in a strange or unusual way; unexpectedly
Example
Oddly, he didn’t seem upset by the bad news.
Seltsamerweise schien er über die schlechte Nachricht nicht verärgert zu sein.
B1 adjective /əˈbiː.di.ənt/

Obedient

gehorsam
Meaning
willing to comply with orders or instructions; submissive
Example
The obedient student always follows the teacher's instructions.
Der gehorsame Schüler folgt immer den Anweisungen des Lehrers.
A1 pronoun /aʊər/

our

unser
Meaning
belonging to or associated with the speaker and one or more other people
Example
This is our house.
Dies ist unser Haus.
C1 adjective /aʊtˈmoʊdɪd/

outmoded

veraltet
Meaning
No longer in fashion or useful; outdated.
Example
That old computer is completely outmoded.
Dieser alte Computer ist völlig veraltet.
C1 verb ˈɔːr.kɪ.streɪt

orchestrate

koordiniert
Meaning
To plan or coordinate the elements of (a situation) to produce a desired effect, especially surreptitiously.
Example
He skillfully orchestrated the entire event.
Er hat das gesamte Event geschickt orchestriert.
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.
C1 noun /oʊˈveɪʃən/

ovation

Beifall
Meaning
an enthusiastic show of approval, especially by clapping hands
Example
The actor received a standing ovation after his performance.
Der Schauspieler erhielt nach seiner Aufführung stehende Ovationen.
A1 conjunction /ɔːr/

or

oder
Meaning
used to link alternatives
Example
You can have tea or coffee.
Du kannst Tee oder Kaffee haben.
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.
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 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.
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.
B1 adjective /ˈɔːɡənaɪzd/

organized

organisiert
Meaning
Arranged in a systematic way, especially on a large scale.
Example
An organized approach to work increases productivity and reduces stress.
Ein gut organisierter Ansatz bei der Arbeit erhöht die Produktivität und reduziert Stress.
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.
B1 noun /ˈɑb.stə.kəl/

Obstacle

Hindernis
Meaning
something that blocks or makes progress difficult; a barrier
Example
Bad weather was the main obstacle to our journey.
Schlechtes Wetter war das größte Hindernis für unsere Reise.
A1 adjective/adverb /ˈoʊnli/

only

nur
Meaning
without others; solely
Example
He is the only person who knows the secret.
Er ist die einzige Person, die das Geheimnis kennt.
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.
B1 adjective /əˈkeɪ.ʒən.əl/

Occasional

gelegentlich
Meaning
occurring infrequently or irregularly; happening from time to time
Example
She enjoys occasional walks in the park.
Sie genießt gelegentliche Spaziergänge im Park.
A2 preposition /ˈɒntu/

onto

auf
Meaning
moving to a position on the surface of something
Example
She jumped onto the table to get the book.
Sie sprang auf den Tisch, um das Buch zu holen.
B2 noun /əˈfens/

Offence

Verstoß; Straftat; Angriff
Meaning
a breach of law or rule; an annoyance or resentment
Example
Stealing is a serious offence punishable by law.
Diebstahl ist ein schweres Vergehen, das gesetzlich bestraft wird.
C2 verb /ˌoʊvərˈstraɪd/

overstride

mit großen Schritten überqueren
Meaning
To stride over something; to step across with long steps.
Example
He managed to overstride the narrow stream with ease.
Er schaffte es, den engen Bach mit Leichtigkeit zu überqueren.
C2 verb /ˈɑːbvieɪt/

obviate

beseitigen
Meaning
To remove a need or difficulty; to prevent or avoid something.
Example
This new system obviates the need for manual data entry.
Dieses neue System beseitigt die Notwendigkeit einer manuellen Dateneingabe.
C1 noun /ˈɒf.sprɪŋ/

offspring

Nachwuchs
Meaning
a person's child or children; an animal's young
Example
The bird carefully fed its offspring.
Der Vogel fütterte vorsichtig seinen Nachwuchs.
B2 adverb /əˈfɪʃəli/

officially

offiziell
Meaning
in a formal or authorized way
Example
The building was officially opened by the mayor.
Das Gebäude wurde offiziell vom Bürgermeister eröffnet.
B2 adjective ɔːrˈɡæn.ɪk

organic

biologisch
Meaning
Produced or involving production without the use of chemical fertilizers, pesticides, or other artificial agents.
Example
Organic farming improves soil health and reduces pollution.
Ökologischer Landbau verbessert die Gesundheit des Bodens und reduziert die Verschmutzung.
C2 noun /ˈoʊdiəm/

odium

Abscheu
Meaning
general or widespread hatred or disgust directed toward someone as a result of their actions
Example
The scandal brought public odium on the corrupt minister.
Der Skandal brachte öffentliches Odium auf den korrupten Minister.
B2 adjective, verb /əbˈskjʊr/

obscure

dunkel
Meaning
Not clearly expressed or understood; to make something difficult to see or understand.
Example
The meaning of the poem was obscure to most readers.
Die Bedeutung des Gedichts war für die meisten Leser unklar.
C1 noun /ˈɒktəɡən/

octagon

Acht-Eck
Meaning
A polygon with eight sides and eight angles.
Example
The stop sign is shaped like an octagon.
Das Stoppschild hat die Form eines Achtecks.
C2 adjective /ˌoʊvərˈwiːnɪŋ/

overweening

überheblich
Meaning
excessively arrogant or prideful
Example
His overweening pride cost him many friends.
Sein übermäßiger Stolz kostete ihm viele Freunde.
A1 verb, adjective /oʊn/

own

besitzen
Meaning
to possess something; belonging to oneself
Example
She owns a beautiful house in the city.
Sie besitzt ein schönes Haus in der Stadt.
B2 noun/verb /ˈoʊvərˌdoʊs/

overdose

überdosis
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.
Er wurde nach einer Drogenüberdosis ins Krankenhaus eingeliefert.
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.
A1 adverb /wʌns/

Once

einmal; irgendwann in der Vergangenheit
Meaning
one time only; at some time in the past; formerly
Example
I have been to Paris once in my life.
Ich war einmal in meinem Leben in Paris.
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.
C2 noun /ˈɔːrzmən/

Oarsman

Ruderer
Meaning
a person who rows a boat, especially as a member of a racing crew
Example
The experienced oarsman rowed the boat across the river.
Der erfahrene Ruderer ruderte das Boot über den Fluss.
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.
A1 verb /ˈoʊpən/

open

öffnen
Meaning
to move something so as to allow access; to begin
Example
Please open the door for me.
bitte öffne die Tür für mich.
C2 noun ˌɒbfəsˈkeɪʃən

obfuscation

Obfuskation, Verwirrung
Meaning
The action of making something obscure, unclear, or unintelligible.
Example
The obfuscation of the data made it difficult to interpret.
Die Obfuskation der Daten erschwerte deren Interpretation.
C1 verb /ˌoʊvərˈruːl/

overrule

aufheben
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.
Der Richter hob den Einspruch des Verteidigers auf.
B2 noun ˈɔː.bɪt

orbit

Umlaufbahn
Meaning
The curved path of a celestial object around a star, planet, or moon.
Example
The satellite maintains its orbit around Earth.
Der Satellit hält seine Umlaufbahn um die Erde bei.
C1 noun /ˈɑːdəsi/

odyssey

lange Reise
Meaning
a long, adventurous journey; a series of experiences
Example
Her career has been an odyssey of challenges and achievements.
Ihre Karriere war eine Odyssee aus Herausforderungen und Erfolgen.
C1 noun /əˈkɜr.əns/

Occurrence

Vorkommen
Meaning
an instance or event of something happening; the fact of occurring
Example
The occurrence of earthquakes is common in this region.
Das Vorkommen von Erdbeben ist in dieser Region üblich.
C2 noun /ɔːrˈθɑːɡrəfi/

orthography

Orthografie
Meaning
The conventional spelling system of a language.
Example
English orthography can be confusing for learners.
Die englische Orthografie kann für Lernende verwirrend sein.
B1 adjective /ˈaʊtər/

outer

äußeren
Meaning
situated on or toward the outside; external
Example
The outer layer of the jacket is waterproof.
Die äußere Schicht der Jacke ist wasserdicht.
C1 noun /ˈɑn.set/

Onset

Beginn; Auftakt
Meaning
the beginning or early stages of something; the start of a medical condition
Example
The onset of winter brought heavy snowfall.
Der Beginn des Winters brachte starken Schneefall.
A2 noun /ˈʌv.ən/

Oven

ofen
Meaning
an enclosed compartment used for heating, baking, or drying food
Example
She baked cookies in the oven for thirty minutes.
Sie backte Kekse im Ofen für dreißig Minuten.
C1 verb /ˈɒs.ɪ.leɪt/

oscillate

sich hin und her bewegen oder schwingen zwischen zwei Punkten oder Zuständen
Meaning
To swing or move back and forth between two points or states
Example
The stock market tends to oscillate during uncertain times.
Der Aktienmarkt tendiert dazu, sich in unsicheren Zeiten zu bewegen.
C2 adjective /ˈəʊ.dər.əs/

Odorous

duftend; aromatisch
Meaning
having a strong smell; fragrant; aromatic
Example
The garden was filled with odorous flowers.
Der Garten war voller duftender Blumen.
B2 noun /əˌrɪʒ.əˈnæl.ə.ti/

Originality

Originalität
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.
Das Werk des Künstlers zeigte große Originalität und Kreativität.
C1 adjective /ˌaʊt ən ˈaʊt/

out-and-out

vollständig
Meaning
complete; absolute; used to emphasize something extreme
Example
The speech was an out-and-out lie.
Die Rede war eine vollständige Lüge.
C1 adjective /əˈbliːk/

Oblique

schräg; diagonal; indirekt oder ausweichend
Meaning
slanting; diagonal; indirect or evasive
Example
The artist drew an oblique line across the canvas.
Der Künstler zog eine schräge Linie über die Leinwand.
C2 noun /ˈɒn.rʌʃ/

onrush

Ansturm
Meaning
A sudden powerful forward or downward rush or flow.
Example
The onrush of water swept away the bridge.
Der Ansturm von Wasser fegte die Brücke fort.
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.
B2 noun /ˈaʊtˌbreɪk/

outbreak

Ausbruch
Meaning
a sudden start or occurrence of something unpleasant, like disease or violence
Example
There was an outbreak of flu in the city.
Es gab einen Ausbruch von Grippe in der Stadt.
C2 noun /ˈɒlɪv brɑːntʃ/

olive-branch

Olivenzweig
Meaning
A symbol of peace or reconciliation; an offer to end conflict.
Example
He extended an olive-branch to his rival after years of hostility.
Er reichte seinem Rivalen nach Jahren der Feindseligkeit einen Olivenzweig.
C1 noun /ˌəʊvərɪksˌplɔɪˈteɪʃən/

overexploitation

Übernutzung
Meaning
The unsustainable use of natural resources at a rate that exceeds their ability to regenerate, leading to depletion and environmental degradation.
Example
Overexploitation of natural resources leads to environmental degradation.
Die Übernutzung natürlicher Ressourcen führt zu Umweltzerstörung.
C1 noun /ˈɔːrkɪd/

Orchid

Orchidee
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.
Die weiße Orchidee auf dem Fensterbrett blühte monatelang.
B1 noun /əˈkeɪ.ʒən/

Occasion

Gelegenheit; besonderer Anlass
Meaning
a particular time or instance of an event; a special celebration
Example
Their wedding was a joyous occasion.
Ihre Hochzeit war eine freudige Gelegenheit.
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.
B2 noun/verb /ˈaʊtreɪdʒ/

outrage

Empörung
Meaning
A strong feeling of anger and shock; to arouse anger or shock.
Example
The unfair decision caused public outrage.
Die ungerechte Entscheidung verursachte öffentliche Empörung.
C2 adjective /ˌoʊpəˈlɛsənt/

opalescent

opalartig
Meaning
showing or reflecting a milky, iridescent light like an opal
Example
The opalescent sky glowed with shades of pink and blue.
Der opaleszente Himmel leuchtete in rosa und blauen Tönen.
B1 adjective, adverb /ˈoʊvərɔːl/

overall

insgesamt
Meaning
in general or as a whole
Example
Overall, the project has been successful.
Insgesamt war das Projekt erfolgreich.
B2 verb /ˌoʊvərˈwɛlm/

overwhelm

überwältigen
Meaning
to overpower someone emotionally or physically; to be too much to handle
Example
She was overwhelmed with gratitude after receiving the help.
Sie war überwältigt von Dankbarkeit, nachdem sie die Hilfe erhalten hatte.
C1 noun /ˈaʊtˌɡroʊθ/

outgrowth

Auswuchs
Meaning
something that grows out of something else; a natural development or result
Example
The new policy was an outgrowth of years of debate.
Die neue Politik war ein Auswuchs jahrelanger Debatten.
C1 adjective /ˈɒptɪməm/

optimum

optimal
Meaning
Most conducive to a favorable outcome; best.
Example
To achieve optimum results, we need to improve efficiency.
Um optimale Ergebnisse zu erzielen, müssen wir die Effizienz verbessern.
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.
C1 noun /ˈoʊvərˌtoʊn/

overtone

subtile Bedeutung
Meaning
A subtle quality, implication, or additional meaning beyond the obvious.
Example
His speech had political overtones that were hard to ignore.
Seine Rede hatte politische Untertöne, die schwer zu ignorieren waren.
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.
B2 verb /ˌoʊvərˈpeɪ/

overpay

überbezahlen
Meaning
To pay more than is necessary or reasonable.
Example
She realized she had overpaid for the concert tickets.
Sie erkannte, dass sie für die Konzertkarten zu viel bezahlt hatte.
C2 noun /ˈɒfərtɔːri/

offertory

Opfergabe
Meaning
The part of a religious service when offerings are collected; the offering itself.
Example
The offertory was taken during the Sunday service.
Die Opfergabe wurde während des Sonntagsgottesdienstes entgegengenommen.
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 adjective /ˌɑːpərˈtuːn/

opportune

günstiger Moment
Meaning
Happening at a suitable or convenient time.
Example
She arrived at an opportune moment to help.
Sie kam zu einem günstigen Moment, um zu helfen.
B2 adjective /aʊtˈreɪdʒəs/

outrageous

empörend
Meaning
Shockingly bad or excessive; very unusual or amusing.
Example
The comedian told an outrageous joke.
Der Komiker erzählte einen empörenden Witz.
B1 noun /ˈɑː.lɪv/

Olive

Olive
Meaning
a small oval fruit with a hard pit, typically green or black, used for eating or making oil
Example
Olive oil is considered one of the healthiest cooking oils available.
Olivenöl gilt als eines der gesündesten Kochöle, die verfügbar sind.
C2 verb /əˈkluːd/

occlude

verstopfen
Meaning
To block or close up an opening or passage.
Example
The pipe was occluded by mineral deposits.
Das Rohr war durch Mineralablagerungen blockiert.
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.
C2 noun /oʊd/

ode

Ode
Meaning
a lyrical poem, often expressing praise or strong emotions
Example
The poet wrote an ode to the beauty of nature.
Der Dichter schrieb eine Ode an die Schönheit der Natur.