Vocabularies

English Vocabulary Dictionary | Word Meanings, Definitions & Examples

olfactory definition card — visual illustration of the meaning
adjective
/ɑːlˈfæktəri/

Relating to the sense of smell.

"The perfume activated her olfactory nerves immediately."

oligarchy definition card — visual illustration of the meaning
🏛️

oligarchy

noun
/ˈɑːlɪˌɡɑːrki/

A small group of people having control of a country, organization, or institution.

"The nation was ruled by a wealthy oligarchy that controlled all resources."

🫒

Olive

noun
/ˈɑː.lɪv/

a small oval fruit with a hard pit, typically green or black, used for eating or making oil

"Olive oil is considered one of the healthiest cooking oils available."

noun
/ˈɒlɪv bɑːb/

A small freshwater fish with olive-colored body and barbels

"The olive barb is commonly found in South Asian rivers."

noun
/ˈɒlɪv brɑːntʃ/

A symbol of peace or reconciliation; an offer to end conflict.

"He extended an olive-branch to his rival after years of hostility."

adjective
/əˈlɪmpɪk/

related to the Olympic Games, a major international sporting event

"She trained hard to compete in the Olympic Games."

Olympic Games definition card — visual illustration of the meaning
noun
əˈlɪm.pɪk ɡeɪmz

The world's largest international sports competition held every four years, bringing together athletes from different countries to compete in various sports.

"The Olympic Games bring together the world's top athletes."

noun
/əˈlɪmpɪks/

an international sports competition held every four years with athletes from many countries

"The Olympics bring athletes from all over the world together."

noun
/ˈɒm.lət/

a dish made from beaten eggs cooked in a frying pan and often folded around a filling

"She made a cheese omelet for breakfast."

🔮

Omen

noun
/ˈoʊ.mən/

an event regarded as a sign of future good or bad luck

"Many people consider a black cat crossing your path a bad omen."

🌩️

Ominous

adjective
/ˈɒmɪnəs/

Giving the impression that something bad or unpleasant is going to happen.

"Dark clouds gave an ominous sign of an approaching storm."

noun
/əˈmɪʃən/

The act of leaving out or excluding something; something that has been left out.

"Her omission of important details caused confusion."

omit definition card — visual illustration of the meaning
✂️

omit

verb
/oʊˈmɪt/

to leave out or exclude; to fail to include something

"Please don't omit any important details from your report."

noun
/ɒmˈnɪpətəns/

The quality of having unlimited power or authority.

"Many religions describe God’s omnipotence as absolute."

omnipotent definition card — visual illustration of the meaning
adjective
/ɒmˈnɪpətənt/

Having unlimited power; able to do anything.

"The CEO acted as if he were omnipotent in the company."

omnipresent definition card — visual illustration of the meaning
adjective
/ˌɒmnɪˈprɛzənt/

present everywhere at the same time

"In the digital age, social media feels omnipresent in our lives."

noun
/ɒmˈnɪʃəns/

the state of knowing everything

"The novel's narrator has an air of omniscience, revealing every character's thoughts."

👁️

Omniscient

adjective
/ɒmˈnɪʃənt/

having complete or unlimited knowledge and awareness

"Some religions describe God as omniscient and all-powerful."

🍽️

Omnivorous

adjective
/ɒmˈnɪvərəs/

eating both plants and animals

"Humans are generally considered omnivorous creatures."

📖

on

preposition
/ɒn/

physically in contact with and supported by a surface

"The book is on the table."

Once

adverb
/wʌns/

on one occasion only; at a time in the past

"She visited Paris once last year."

1️⃣

one

pronoun, noun, adjective
/wʌn/

the number equivalent to the sum of zero and one; a single person or thing

"Only one student answered the question."

noun
/wʌn θɜːd/

one part of something that is divided into three equal parts

"One-third of the class was absent today."

onerous definition card — visual illustration of the meaning
⚖️

onerous

adjective
/ˈəʊnərəs/

involving a great deal of effort, difficulty, or burden

"Fulfilling the contract proved to be an onerous task for the company."

adjective
/ˈɒnɡəʊɪŋ/

continuing; still in progress

"The ongoing project will finish next month."

🧅

Onion

noun
/ˈʌnjən/

a round vegetable with a strong smell and flavor, usually used in cooking

"I chopped an onion to make the soup."

adjective/adverb
/ˈɒnˌlaɪn/

connected to or available through the internet

"I prefer shopping online rather than going to stores."

only

adjective/adverb
/ˈoʊnli/

without others; solely

"He is the only person who knows the secret."

onomatopoeia definition card — visual illustration of the meaning
noun
/ˌɒn.əˌmæt.əˈpiː.ə/

The formation of a word from a sound associated with what is named.

"The word 'buzz' is an example of onomatopoeia."

noun
/ˈɒn.rʌʃ/

A sudden powerful forward or downward rush or flow.

"The onrush of water swept away the bridge."

🌨️

Onset

noun
/ˈɒn.sɛt/

The beginning of something, especially something unpleasant.

"The onset of winter brought cold winds and snow."

noun
/ˈɒn.slɔːt/

A fierce or destructive attack.

"The village faced an onslaught of enemy forces."

🔜

onto

preposition
/ˈɒntu/

moving to a position on the surface of something

"She jumped onto the table to get the book."

⚖️

onus

noun
/ˈəʊ.nəs/

A duty or responsibility, especially a heavy one.

"The onus is on the government to provide relief to the victims."

💧

ooze

verb
/uːz/

to slowly flow or leak out through small openings or pores

"Blood began to ooze from the small cut."

noun
/ˌoʊpəˈlɛsəns/

a milky or pearly appearance of a surface like that of an opal

"The pearl had a gentle opalescence under the light."

adjective
/ˌoʊpəˈlɛsənt/

showing or reflecting a milky, iridescent light like an opal

"The opalescent sky glowed with shades of pink and blue."

opaque definition card — visual illustration of the meaning
adjective
/oʊˈpeɪk/

not transparent or translucent; difficult to see through or understand

"The windows were opaque with steam."

🔓

open

verb, adjective
/ˈoʊ.pən/

to move something so that it is no longer closed; not closed

"She opened the window to let in fresh air."

adjective
/ˈoʊ.pən ˈhæn.dɪd/

Generous; liberal; giving freely;

"He is very open-handed with his money and always helps those in need."

adjective
/ˈoʊ.pən ˈhɑrt.ɪd/

Kind and generous; sincere and honest; warmly receptive;

"She welcomed the strangers with an open-hearted smile and invited them for dinner."

noun
/ˈoʊpənɪŋ/

an act or instance of beginning something

"The opening of the new store was a huge success."

🗣️

Openly

adverb
/ˈəʊpənli/

in a way that is not secret or hidden

"He spoke openly about his past mistakes."

🎭

opera

noun
/ˈɒpərə/

a dramatic performance in which the actors sing most of their lines

"We watched a beautiful opera at the theater last night."

operate definition card — visual illustration of the meaning
⚙️

operate

verb
/ˈɑːpəˌreɪt/

to control the functioning of a machine, system, or business

"She learned how to operate the new machine."

verb
/ˈɒpəreɪtɪŋ/

to control or manage the functioning of something

"The company has been operating in this market for five years."

noun
/ˌɒpəˈreɪʃən/

an act or process of functioning or operating

"The hospital performed a successful operation."

operational definition card — visual illustration of the meaning
adjective
/ˌɒpəˈreɪʃənl/

related to or engaged in the operation of something

"The team is ready for the operational phase of the project."

adjective
/ˈɒpərətɪv/

functioning, having effect, or relating to a secret agent or worker

"The new law is now operative across the country."

noun
/ˈɒpəreɪtər/

a person who operates equipment, a business, or controls something

"The machine operator ensured that everything ran smoothly."