observance
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C1 noun /əbˈzɜːvəns/

observance

соблюдение
Meaning
The practice of following a custom, rule, or religious law.
Example
The festival is held in observance of a centuries-old tradition.
Фестиваль проводится в соблюдении вековой традиции.
B2 noun /ˈaʊt.saɪ.dər/

Out-sider

аутсайдер
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.
Как аутсайдер, ему было трудно понять их традиции.
B1 noun /ˈɑb.stə.kəl/

Obstacle

препятствие
Meaning
something that blocks or makes progress difficult; a barrier
Example
Bad weather was the main obstacle to our journey.
Плохая погода была главным препятствием на нашем пути.
C1 noun /ˈɑːdəsi/

odyssey

долгое путешествие
Meaning
a long, adventurous journey; a series of experiences
Example
Her career has been an odyssey of challenges and achievements.
Её карьера была одиссеей из испытаний и достижений.
B2 verb /əˈfend/

offend

оскорблять
Meaning
to cause displeasure or resentment; to hurt someone's feelings
Example
His rude comments offended many people at the meeting.
Его грубые комментарии оскорбили многих людей на встрече.
A1 noun /ɒkˈtoʊbər/

october

октябрь
Meaning
the tenth month of the year in the Gregorian calendar
Example
The weather becomes cooler in October.
В октябре погода становится прохладнее.
A1 adverb /ˈɔːfən/

often

часто
Meaning
frequently, many times
Example
I often visit my grandparents on weekends.
Я часто посещаю своих бабушку и дедушку на выходных.
C2 noun /ˈɔɪl.mən/

Oilman

нефтяник
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.
Нефтяник обнаружил новое нефтяное месторождение в пустыне.
C1 adjective /ɔːˈneɪt/

ornate

роскошный
Meaning
elaborately or highly decorated
Example
The palace hall was filled with ornate furniture and paintings.
Зал дворца был заполнен роскошной мебелью и картинами.
C1 verb /əbˈstrʌkt/

obstruct

преграждать
Meaning
to block or hinder progress; to prevent or impede movement
Example
The fallen tree obstructed the road for several hours.
Павшее дерево перегородило дорогу на несколько часов.
C2 noun /ˈoʊɡər/

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.
B2 adjective /ˌfæʃ.ənd/

Outdated

устаревший
Meaning
obsolete; no longer current
Example
This computer software is completely outdated.
Это программное обеспечение полностью устарело.
B1 noun /ˌɒp.əˈtjuː.nə.ti/

opportunity

возможность
Meaning
A favorable chance or set of circumstances that makes it possible to do something.
Example
She seized the opportunity to study abroad.
Она воспользовалась возможностью учиться за границей.
A2 adjective /ˈaʊtdɔːr/

outdoor

на свежем воздухе
Meaning
situated, existing, or done outside a building
Example
We planned an outdoor picnic for the weekend.
Мы запланировали пикник на свежем воздухе на выходные.
C2 adjective /ˈɑːbdjʊrət/

obdurate

упертый
Meaning
Stubbornly refusing to change one's opinion or course of action.
Example
He remained obdurate despite everyone's pleas.
Он остался упертым, несмотря на просьбы всех.
B1 verb /əˈkɜːr/

occur

случаться
Meaning
to happen or take place; to be found or present
Example
The accident occurred at the intersection during rush hour.
Авария произошла на перекрестке в час пик.
C2 noun /ˌɑːbdʒərˈɡeɪʃən/

objurgation

строгий выговор
Meaning
a harsh scolding or strong rebuke
Example
His misconduct earned him a severe objurgation from the manager.
Его проступок вызвал строгий выговор от менеджера.
C1 adjective /ˈɒptɪk/

optic

оптический
Meaning
Relating to the eye or vision.
Example
The optic nerve carries signals from the eye to the brain.
Оптический нерв передает сигналы от глаза к мозгу.
B2 verb /ˌoʊvərˈiːt/

overeat

счастье
Meaning
To eat more food than the body needs.
Example
She tends to overeat when she is stressed.
Она не могла скрыть свое счастье, когда получила награду.
C2 noun /ɔːˈreɪʃən/

oration

речь
Meaning
A formal speech, especially one given on a ceremonial occasion
Example
The president delivered an inspiring oration.
Президент произнес вдохновенную речь.
B2 noun /ˌaʊtˈsaɪdə(r)/

outsider

аутсайдер
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.
Будучи новым студентом, она часто чувствовала себя аутсайдером в школе.
C1 noun /ˈoʊvərˌsiːər/

overseer

надсмотрщик
Meaning
a person who supervises work or workers; a manager
Example
The overseer made sure the workers followed safety rules.
Надсмотрщик убедился, что рабочие соблюдают правила безопасности.
B2 noun /əbˈzɜːvər/

observer

наблюдатель
Meaning
a person who watches or notices something
Example
The observer took notes during the meeting.
Наблюдатель сделал заметки во время встречи.
C1 noun /ˈɔːrθədɑːksi/

orthodoxy

ортодоксия
Meaning
traditional or generally accepted beliefs and practices
Example
The religious leader defended the orthodoxy of the faith.
Религиозный лидер защищал ортодоксию веры.
A1 noun/adjective/adverb /ˌaʊtˈsaɪd/

outside

снаружи
Meaning
the external part or surface of something; beyond the boundary
Example
Children were playing outside in the yard.
Дети играли на улице в саду.
B1 noun ˌɒpəˈtjuːnɪtiz

opportunities

возможности
Meaning
A set of circumstances that makes it possible to do something; chances for advancement or success.
Example
Opportunities for jobs decreased.
Возможности для работы уменьшились.
C2 noun /ˈoʊvərlɔːrd/

overlord

повелитель
Meaning
A ruler, master, or person of great power and authority over others.
Example
The peasants were forced to pay taxes to their overlord.
Крестьяне были вынуждены платить налоги своему повелителю.
C1 adjective /ˈɒptɪkəl/

optical

оптический
Meaning
related to or used in seeing or sight
Example
The optical illusion fooled everyone at the exhibition.
Оптическая иллюзия обманула всех на выставке.
C1 adjective əʊˈpeɪk

opaque

непрозрачный, непроходимый, трудный для понимания
Meaning
Not able to be seen through; not transparent; difficult to understand.
Example
The glass was too opaque to see through.
Стекло было слишком непрозрачным, чтобы увидеть через него.
C2 noun /ˈɔːrdʒi/

orgy

орги
Meaning
A wild party involving excessive indulgence, especially of a sexual nature.
Example
The novel described a scandalous orgy in a wealthy mansion.
Роман описал скандальную оргии в богатом особняке.
C1 noun /ˈɔɪntmənt/

ointment

мазь
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.
Доктор прописал мазь для ожога на его руке.
A2 adjective /əˈlɪmpɪk/

olympic

олимпийский
Meaning
related to the Olympic Games, a major international sporting event
Example
She trained hard to compete in the Olympic Games.
Она усердно тренировалась, чтобы участвовать в Олимпийских играх.
C1 noun /ˈaʊtpoʊst/

outpost

передовой пост
Meaning
A small military camp or position at some distance from the main force, used especially as a guard.
Example
The soldiers were stationed at a remote outpost.
Солдаты были размещены на удаленном передовом посту.
B1 adjective /əˈfɪʃəl/

official

официальный
Meaning
relating to or connected with an authority or public office
Example
He is the official spokesperson for the company.
Он официальный представитель компании.
C1 noun /ˈɒf.sprɪŋ/

offspring

потомство
Meaning
a person's child or children; an animal's young
Example
The bird carefully fed its offspring.
Птица осторожно кормит свое потомство.
C1 verb /ˌaʊtˈweɪ/

outweigh

быть более важным
Meaning
To be more important, valuable, or significant than something else.
Example
The benefits of the new policy outweigh the risks.
Преимущества новой политики перевешивают риски.
C1 verb /ˈɒs.ɪ.leɪt/

oscillate

колебаться или двигаться взад-вперед между двумя точками или состояниями
Meaning
To swing or move back and forth between two points or states
Example
The stock market tends to oscillate during uncertain times.
Рынок акций обычно колеблется в неопределенные времена.
C1 verb əˈblɪt.ə.reɪt

obliterate

уничтожать
Meaning
To destroy utterly; wipe out completely, to erase or remove something completely.
Example
The storm obliterated entire villages.
Шторм уничтожил целые деревни.
B1 verb /ˈɔːrɡənaɪz/

organize

организовать
Meaning
to arrange systematically; to plan and coordinate
Example
She organized a surprise party for her friend.
Она организовала сюрприз-вечеринку для своей подруги.
B2 noun /ˈaʊtˌskɜːrt/

outskirt

окраина города
Meaning
the outer edge or border of a town or city
Example
They built a new factory on the outskirts of the city.
Они построили новый завод на окраине города.
C2 noun /ˈɔː.rɪ.fɪs/

orifice

отверстие
Meaning
an opening or hole, especially in the body or a device
Example
The medicine was applied through a small orifice in the device.
Медикамент был нанесен через небольшое отверстие в устройстве.
C2 adjective /ˈoʊ.vɔɪd/

ovoid

овальный
Meaning
egg-shaped; resembling an oval or ellipse
Example
The artist painted an ovoid shape in the center of the canvas.
Художник нарисовал овальную форму в центре холста.
C2 adjective /ˌɔːfˈkiː/

off-key

не в ноте
Meaning
out of tune; not in accordance with expected standards
Example
The singer was slightly off-key during the performance.
Певец был немного не в ноте во время выступления.
C1 noun /ˌoʊvərprəˈdʌkʃən/

overproduction

перепроизводство
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.
Экономический кризис был вызван перепроизводством товаров.
C1 noun /ˌɑːpərˈtuːnɪst/

opportunist

оппортунист
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.
Его считают оппортунистом, который всегда ставит свои интересы на первое место.
B2 noun, verb /ˈaʊtlɔː/

outlaw

изгой
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.
Правительство решило запретить вредную практику.
C1 adjective /ˈaʊt.kɑːst/

Outcast

изгнанник
Meaning
rejected by society; excluded person
Example
He felt like an outcast in his new school.
Он чувствовал себя как изгнанник в своей новой школе.
C2 noun /ˈɒksɪdənt/

occident

Запад
Meaning
The countries of the West, especially Europe and America.
Example
The Occident has a long history of philosophical thought.
Запад имеет долгую историю философской мысли.
B2 noun /ˈaʊtlʊk/

outlook

перспектива, прогноз
Meaning
a person's general attitude or view; a forecast or prospect
Example
The economic outlook for the year is positive.
Экономический прогноз на год положительный.
B2 noun /ˈɒp.tɪ.mɪ.zəm/

optimism

оптимизм
Meaning
Hopefulness and confidence about the future or the successful outcome of something.
Example
Her optimism helped her overcome difficult times.
Её оптимизм помог ей преодолеть трудные времена.
B2 noun/verb /ˈaʊtreɪdʒ/

outrage

возмущение
Meaning
A strong feeling of anger and shock; to arouse anger or shock.
Example
The unfair decision caused public outrage.
Несправедливое решение вызвало общественное возмущение.
B2 noun ˈɒksɪdʒən prəˈdʌkʃən

oxygen production

производство кислорода
Meaning
The process of generating oxygen through photosynthesis or other means.
Example
Plants are vital for oxygen production and the maintenance of life.
Растения жизненно важны для производства кислорода и поддержания жизни.
C1 noun /ˈoʊvərˌtʊr/

overture

уведо́мление / предложение
Meaning
An introduction to something more substantial; a proposal or preliminary action.
Example
The peace overture was welcomed by both nations.
Мирное предложение было встречено обеими нациями.
C1 noun /ˈɒktəɡən/

octagon

восьмиугольник
Meaning
A polygon with eight sides and eight angles.
Example
The stop sign is shaped like an octagon.
Знак стоп имеет форму восьмиугольника.
B1 noun ˌɔː.ɡən.aɪˈzeɪ.ʃən

organization

организация
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.
Организация была официально открыта в 2024 году.
C2 noun /ˈaʊtˌrɪɡər/

outrigger

стабилизирующая структура
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.
Рыбак греб своим каноэ с аутригером через лагуну.
C2 adjective /ˈɔːrnəri/

ornery

раздражительный
Meaning
bad-tempered and combative; stubborn
Example
The ornery old man refused to leave his chair.
Этот раздражительный старик отказался покидать своё кресло.
C2 verb /əbˈtruːd/

obtrude

вторгаться
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.
Он не хотел вторгаться в их личный разговор.
A1 preposition /ʌv/

of

от
Meaning
expressing the relationship between a part and a whole
Example
The book is on the table, in front of the window.
Книга на столе, перед окном.
C2 adjective /ˌɒbsəˈlɛsnt/

obsolescent

устаревающий
Meaning
Becoming outdated or on the way to becoming obsolete.
Example
The obsolescent technology could not compete with modern devices.
Устаревающая технология не могла конкурировать с современными устройствами.
C2 noun /oʊˈbeɪsəns/

obeisance

поклон
Meaning
A gesture of respect such as a bow or curtsy.
Example
They bowed in obeisance to the king.
Они поклонились в знак почтения королю.
C2 adjective /ˈɒfɪʃ/

offish

отчуждённый
Meaning
Unfriendly, distant, or reserved in manner.
Example
He seemed offish at the party and avoided most conversations.
Он казался отчуждённым на вечеринке и избегал большинства разговоров.
C1 noun /ˈoʊvərˌtoʊn/

overtone

тонкая коннотация
Meaning
A subtle quality, implication, or additional meaning beyond the obvious.
Example
His speech had political overtones that were hard to ignore.
Его речь имела политические подтоны, которые было трудно игнорировать.
C1 noun /ˈɔr.ə.kəl/

Oracle

оракул
Meaning
a person regarded as a source of wise counsel; in ancient times, a priest or priestess acting as a medium
Example
The ancient Greeks consulted the oracle at Delphi.
Древние греки консультировались с оракулом в Дельфах.
C2 adjective /ɒmˈnɪp.ə.tənt/

omnipotent

всемогущий
Meaning
Having unlimited power; able to do anything; all-powerful.
Example
In many religions, God is considered omnipotent.
Во многих религиях Бога считают всемогущим.
C2 noun /ˈɔːrɪndʒfɪn ˈleɪbiːoʊ/

Orangefin labeo

оранжевоплавничный лабео
Meaning
a freshwater fish species native to South Asian rivers, commonly found in Bangladesh and India
Example
The orangefin labeo is an important food fish in Bangladesh.
Оранжевоплавничный лабео — важная пищевая рыба в Бангладеш.
C1 adjective /əbˈstrʌk.tɪv/

Obstructive

обструктивный
Meaning
deliberately creating difficulties or preventing progress; hindering or blocking something
Example
The obstructive policies hindered economic growth.
Обструктивные политики препятствовали экономическим росту.
C1 noun /ˌɑːk.sɪˈmɔːr.ɒn/

oxymoron

оксюморон
Meaning
a figure of speech where two contradictory terms are combined
Example
The phrase 'deafening silence' is a classic oxymoron.
Фраза 'оглушительная тишина' - классический оксюморон.
C1 noun ˌɒk.sɪˈdeɪ.ʃən

oxidation

окисление
Meaning
A chemical reaction that involves the combination of a substance with oxygen, often causing deterioration.
Example
Oxidation causes metal surfaces to weaken.
Окисление ослабляет металлические поверхности.
B2 adverb /əˈfɪʃəli/

officially

официально
Meaning
in a formal or authorized way
Example
The building was officially opened by the mayor.
Здание было официально открыто мэром.
C2 noun /ˈɑːbəlɪsk/

obelisk

обелиск
Meaning
A tall, four-sided, narrow tapering monument with a pyramid-shaped top.
Example
The ancient Egyptians built obelisks to honor their gods.
Древние египтяне строили обелиски, чтобы почтить своих богов.
B2 verb /ˌoʊvərˈtɜrn/

overturn

перевернуть / отменить решение
Meaning
to turn something upside down or to reverse a decision or judgment
Example
The court decided to overturn the previous ruling.
Суд решил отменить предыдущее решение.
C1 verb /ˌoʊvərˈriːtʃ/

overreach

перегрузка
Meaning
to go beyond what is proper, acceptable, or achievable; to overextend
Example
The politician overreached by making promises he couldn't keep.
Политик перегрузил себя, пообещав то, чего не мог выполнить.
C1 adjective /əbˈnɒkʃəs/

Obnoxious

невыносимый
Meaning
Extremely unpleasant, offensive, or annoying.
Example
The obnoxious behavior of the guest ruined the party.
Невыносимое поведение гостя испортило вечеринку.
C2 adjective /ˈɒsiəs/

osseous

костный
Meaning
consisting of or turned into bone; bony
Example
The fossil showed osseous structures of the ancient creature.
Окаменелость показала костные структуры древнего существа.
C1 noun /ˈɔːrdɪnəns/

ordinance

устав
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.
Городской совет принял устав, запрещающий курение в общественных парках.
A2 noun /ˈɒm.lət/

Omelet

омлет
Meaning
a dish made from beaten eggs cooked in a frying pan and often folded around a filling
Example
She made a cheese omelet for breakfast.
Она приготовила сырный омлет на завтрак.
C1 adjective /ˈɔːrdɪnəl/

ordinal

порядковый
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.
Число 'третий' порядковое указывает на позицию в последовательности.
C1 adjective /əbˈtjuːs/

Obtuse

тупой; медленно понимающий; нечувствительный
Meaning
annoyingly insensitive or slow to understand; lacking in intelligence or perception
Example
He was being deliberately obtuse about the instructions.
Он преднамеренно был обтусен в отношении инструкций.
B2 noun /ˌɑb.lɪˈɡeɪ.ʃən/

Obligation

обязанность
Meaning
a duty or commitment; something that must be done legally or morally
Example
Parents have an obligation to care for their children.
Родители обязаны заботиться о своих детях.
C2 noun /ˈoʊ.vər.let/

Overlet

матрас
Meaning
a thin mattress or pad placed over a bed for additional comfort
Example
The overlet makes the bed more comfortable to sleep on.
Оверлет делает кровать более комфортной для сна.
C1 noun /əˈkɜr.əns/

Occurrence

случай
Meaning
an instance or event of something happening; the fact of occurring
Example
The occurrence of earthquakes is common in this region.
Происшествия землетрясений распространены в этом регионе.
B1 noun /aʊl/

Owl

сова
Meaning
a nocturnal bird of prey with large eyes and a hooked beak
Example
The owl hooted softly in the darkness of the forest.
Сова ухала тихо в темноте леса.
C1 adjective /əˈbliːk/

Oblique

косой; диагональный; косвенный или уклончивый
Meaning
slanting; diagonal; indirect or evasive
Example
The artist drew an oblique line across the canvas.
Художник нарисовал наклонную линию на холсте.
C1 adjective /əbˈzɜːrvənt/

Observant

наблюдательный
Meaning
quick to notice things; watchful; attentive
Example
The observant detective noticed every small detail at the crime scene.
Наблюдательный детектив заметил каждую мелочь на месте преступления.
B2 noun /əbˈsɛʃən/

obsession

одержимость
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.
Его одержимость успехом заставляла его работать день и ночь.
C1 verb /aʊtˈwɪt/

outwit

перехитрить
Meaning
to defeat or gain an advantage over someone by being more clever or cunning
Example
The fox managed to outwit the hunters.
Лиса смогла перехитрить охотников.
B2 noun /əˈfɛns/

offense

преступление
Meaning
an illegal act; a crime
Example
The offense was committed in broad daylight.
Преступление было совершено при свете дня.
C2 noun /ˌɔːrdɪˈneɪʃən/

ordination

посвящение
Meaning
The ceremony of conferring holy orders or official religious authority.
Example
The church held a special service for the ordination of new priests.
Церковь провела специальную службу для посвящения новых священников.
B2 noun /ɒpˈtɪʃən/

optician

оптик
Meaning
A person who makes or sells glasses and contact lenses.
Example
The optician adjusted my new glasses to fit better.
Оптик подстроил мои новые очки так, чтобы они сидели лучше.
A2 noun əˈlɪm.pɪk ɡeɪmz

Olympic Games

олимпийские игры
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.
Олимпийские игры собирают лучших спортсменов мира.
C2 verb /ˈɑːbvieɪt/

obviate

исключать
Meaning
To remove a need or difficulty; to prevent or avoid something.
Example
This new system obviates the need for manual data entry.
Эта новая система исключает необходимость вручную вводить данные.
A1 adverb /wʌns/

Once

один раз; когда-то в прошлом
Meaning
one time only; at some time in the past; formerly
Example
I have been to Paris once in my life.
Я был в Париже один раз в своей жизни.
C2 noun /əbˈsɪdiən/

obsidian

обсидиан (темная стекловидная вулканическая порода)
Meaning
A hard, dark, glasslike volcanic rock formed by rapid solidification of lava.
Example
The knife was made from sharp obsidian.
Нож был сделан из острого обсидиана.
C1 verb /ˌoʊvərˈʃædoʊ/

overshadow

затмить
Meaning
to appear more important or significant than something else, reducing its impact
Example
The scandal overshadowed his achievements.
Скандал затмел его достижения.
B2 noun /əˈfens/

Offence

проступок; нарушение закона
Meaning
a breach of law or rule; an annoyance or resentment
Example
Stealing is a serious offence punishable by law.
Кража — это серьёзный проступок, подлежащий наказанию по закону.
A2 noun /ˈɒpərə/

opera

опера
Meaning
a dramatic performance in which the actors sing most of their lines
Example
We watched a beautiful opera at the theater last night.
Мы посмотрели красивую оперу в театре прошлой ночью.
C1 adjective əˈblɪv.i.əs

oblivious

невнимательный
Meaning
Being completely unaware of surrounding events.
Example
He was oblivious to the noise around him while reading.
Он не замечал шума вокруг, когда читал.
B2 noun /ˈaʊt.laɪn/

Outline

контур; план; схема
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.
Учитель предоставил контур учебного плана курса.
A2 pronoun /aʊərˈsɛlvz/

ourselves

мы сами
Meaning
used by the speaker to refer to themselves and one or more others as the object of the verb
Example
We should help ourselves before helping others.
Мы должны помочь себе, прежде чем помочь другим.
B2 verb /ˌoʊvərˈloʊd/

overload

перегружать
Meaning
to load with too much weight or cargo; to give too much work or information
Example
Don't overload the washing machine or it might break down.
Не перегружайте стиральную машину, иначе она может сломаться.
C1 verb /ˌoʊvərˈrʌn/

overrun

переполнять
Meaning
to spread over or occupy completely; to exceed a limit or time
Example
The garden was overrun with weeds.
Сад был переполнен сорняками.
C1 verb /ˌaʊtˈduː/

outdo

превзойти
Meaning
To do better than someone else; to surpass.
Example
She always tries to outdo her classmates in exams.
Она всегда пытается превзойти своих одноклассников на экзаменах.
C1 noun /əbˈdʒɛktər/

objector

опротестующий
Meaning
a person who expresses opposition or disapproval to something
Example
The objector raised his concerns during the town meeting.
Опротестующий выразил свои опасения во время собрания городского совета.
C1 noun /ˈɒktɪv/

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.
A2 adverb /ˈɒbviəsli/

obviously

очевидно
Meaning
in a way that is easily perceived or understood; clearly
Example
Obviously, he didn’t read the instructions.
Очевидно, он не прочитал инструкции.
C1 noun /ˈoʊ.vər spɪl/

Over-spill

перелив
Meaning
the overflow of liquid from a container; excess that cannot be contained
Example
The overspill from the river flooded nearby farms.
Перелив реки затопил соседние фермы.
B2 adverb /ˈaʊtraɪt/

Outright

прямо; полностью; без всяких оговорок
Meaning
completely; directly; without reservation or concealment
Example
She rejected the proposal outright.
Она отклонила предложение прямо.
C2 verb /ˌoʊvərˈliːp/

overleap

перепрыгнуть
Meaning
To jump over something; to omit or disregard something.
Example
He managed to overleap the fence easily.
Он легко перепрыгнул через забор.
B2 noun /ˈɔːkɪstrə/

orchestra

оркестр
Meaning
a large group of musicians playing different instruments together
Example
The orchestra performed beautifully at the concert.
Оркестр прекрасно выступил на концерте.
A1 verb, adjective /oʊn/

own

владеть
Meaning
to possess something; belonging to oneself
Example
She owns a beautiful house in the city.
Она владеет красивым домом в городе.
C1 noun/verb /ˈoʊvərˌhæŋ/

overhang

выступ
Meaning
To extend outward and hang over something; a projecting part.
Example
The roof overhang provides shade in the summer.
Крыша оверхэнга обеспечивает тень летом.
C2 noun /ɔːrˈθɑːɡrəfi/

orthography

орфография
Meaning
The conventional spelling system of a language.
Example
English orthography can be confusing for learners.
Английская орфография может быть запутанной для учащихся.
B1 noun /əˈkeɪ.ʒən/

Occasion

случай; особый повод
Meaning
a particular time or instance of an event; a special celebration
Example
Their wedding was a joyous occasion.
Их свадьба была радостным случаем.
C1 adjective ˈɒk.sɪ.də.tɪv

oxidative

Связанный с окислением
Meaning
Related to or caused by oxidation, especially cellular damage from free radicals.
Example
Excess stress can lead to oxidative damage in cells.
Чрезмерный стресс может вызвать окислительный ущерб в клетках.
C2 noun /ˈɔːrzmən/

Oarsman

гребец
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.
Опытный гребец греб лодку через реку.
C2 adjective /ˈɔːrəˌtʌnd/

orotund

глубокий и ясный голос
Meaning
full, rich, and clear in sound; pompous in style
Example
The actor's orotund voice filled the theater.
Глубокий голос актера наполнил театр.
C2 noun /ˈɒb.stɪ.nə.si/

obstinacy

упрямство
Meaning
Stubborn refusal to change one's opinion or chosen course of action, despite attempts to persuade one to do so.
Example
His obstinacy made negotiations difficult.
Его упрямство сделало переговоры сложными.
B2 noun /ˈɔːɡən/

organ

орган
Meaning
a part of the body that performs a specific function
Example
The heart is an important organ in the human body.
Сердце — важный орган в человеческом теле.
B2 noun /ˈoʊtˌmiːl/

oatmeal

овсяная каша
Meaning
A type of porridge made from ground oats, often eaten for breakfast.
Example
She eats a bowl of oatmeal every morning for breakfast.
Она ест тарелку овсяной каши каждое утро на завтрак.
C2 adjective /ˌoʊpəˈlɛsənt/

opalescent

опаловый
Meaning
showing or reflecting a milky, iridescent light like an opal
Example
The opalescent sky glowed with shades of pink and blue.
Опалесцентное небо светилось розовыми и синими оттенками.