Eel
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C1 noun /iːl/

Eel

Meaning
a long, snake-like fish that lives in both fresh and salt water
Example
The electric eel can generate powerful electric shocks.
C1 adjective /ˈevər ˈlæstɪŋ/

Ever-lasting

Meaning
eternal; permanent; enduring forever
Example
Their love is ever-lasting and will never fade.
C1 verb ɪkˈstræp.ə.leɪt

Extrapolate

Meaning
Making future estimates based on existing information
Example
Scientists extrapolate climate changes based on past data.
C1 noun /ɪˈvæp.ər.ə.tɪv ˈkuː.lər/

Evaporative cooler

Meaning
a cooling device that uses water evaporation to reduce air temperature
Example
The evaporative cooler works best in dry climates.
C1 noun /ˈek.saɪl/

Exile

Meaning
the state of being barred from one's native country; enforced removal from one's homeland
Example
The political leader was forced into exile after the military coup.
C1 adjective /ɪɡˈzɔːstɪv/

exhaustive

Meaning
Fully comprehensive and including all possibilities.
Example
The report provides an exhaustive analysis of the issue.
C1 noun ˌes.kəˈleɪ.ʃən

escalation

Meaning
A rapid increase; a rise.
Example
The escalation of production costs impacts profitability.
C1 adjective /ˈed.jʊ.keɪ.tɪv/

Educative

Meaning
providing education; instructive; informative
Example
The documentary was highly educative and informative.
C1 verb /ɪnˈtrɛntʃ/

entrench

Meaning
To establish something so firmly that it is difficult to change.
Example
The company entrenched its position in the market through innovation.
C1 verb /ˈɛkskəˌveɪt/

excavate

Meaning
to dig out or remove earth carefully, often for building or archaeological purposes
Example
The workers excavated the site to prepare for construction.
C1 noun /ˈɛksələnsɪ/

excellency

Meaning
a title of honor for people of high rank, especially ambassadors or governors
Example
His Excellency the Ambassador attended the ceremony.
C1 verb /ɪnˈθjuːz/

enthuse

Meaning
to express excitement or admiration
Example
She enthused about her trip to Italy.
C1 verb /ɪˈkɒnəmaɪz/

economize

Meaning
To reduce spending or use resources carefully.
Example
Families are trying to economize by cutting unnecessary expenses.
C1 noun /ˈɛpɪˌlɔːɡ/

epilogue

Meaning
A section at the end of a book, play, or speech that serves as a conclusion.
Example
The author included an epilogue to explain what happened to the characters later.
C1 verb ɪˈræd.ɪ.keɪt

eradicate

Meaning
To destroy completely; to put an end to something undesirable.
Example
Vaccination programs help eradicate infectious diseases.
C1 verb /ˈɛnərˌdʒaɪz/

energize

Meaning
To give energy or vitality to something or someone.
Example
The motivational speech helped energize the team.
C1 adjective ɪˌɡæl.ɪˈteə.ri.ən

egalitarian

Meaning
Believing in or based on the principle that all people are equal and deserve equal rights and opportunities.
Example
The new law promotes an egalitarian society.
C1 noun /ɪɡˈzɜːr.ʃən/

exertion

Meaning
Using energy or effort to achieve something.
Example
Excessive exertion can lead to fatigue and burnout.
C1 noun /ɪkˈstræv.ə.ɡəns/

Extravagance

Meaning
lack of restraint in spending money; excessive expense
Example
The wedding celebration was criticized for its unnecessary extravagance.
C1 verb /ɪɡˈzɔːlt/

exalt

Meaning
to praise highly or raise in rank, honor, or power
Example
The community exalted the teacher for his dedication.
C1 adjective /ˈɛm.ɪ.nənt/

eminent

Meaning
Famous and respected within a particular sphere or profession.
Example
He is an eminent scientist known for groundbreaking research.
C1 noun /ɪkˈspɛktənsi/

expectancy

Meaning
the state of expecting something; anticipation or likelihood
Example
There was a sense of expectancy in the room before the results were announced.
C1 adjective /ˌɛvərˈlæstɪŋ/

everlasting

Meaning
Lasting forever or for an indefinitely long time.
Example
The poet wrote about his everlasting love for nature.
C1 verb /ɪˈnjuːməˌreɪt/

enumerate

Meaning
to mention things one by one; to list or count
Example
She enumerated the reasons for her decision.
C1 noun /ɪkˌsperɪˈmɛnteɪʃən/

experimentation

Meaning
The process of performing a scientific procedure to make a discovery, test a hypothesis, or demonstrate a known fact.
Example
Experimentation leads to groundbreaking products.
C1 verb /ɪˈdʒɛkt/

eject

Meaning
to force someone or something out, usually from a place or position
Example
The referee had to eject the player for unsportsmanlike behavior.
C1 noun /ɪˈleɪʃən/

elation

Meaning
A feeling of great happiness and excitement.
Example
His elation was evident after winning the championship.
C1 verb /ɪnˈtæŋɡəl/

entangle

Meaning
to become twisted together or caught in something; to involve in difficulties
Example
The fish got entangled in the net.
C1 verb /ɪkˈstræpəleɪtɪŋ/

extrapolating

Meaning
Extend the application of (a method or conclusion) to an unknown situation by assuming that existing trends will continue.
Example
Extrapolating from the current data, we can estimate the trends for next year.
C1 noun /ɪˈvændʒəlɪst/

evangelist

Meaning
A person who seeks to convert others to the Christian faith, especially by public preaching.
Example
The evangelist traveled across the country spreading his message.
C1 verb /ɪnˈkrəʊtʃ/

encroach

Meaning
to gradually take over or intrude on someone’s rights, territory, or space
Example
The buildings began to encroach on the protected forest land.
C1 noun /ɪnˈdɪrmənt/

endearment

Meaning
A word or phrase expressing affection or love.
Example
She whispered a gentle endearment to her child.
C1 noun /ˈɪrˌplʌɡ/

earplug

Meaning
a device inserted into the ear to block out noise or water
Example
He wore earplugs to sleep during the noisy night.
C1 verb /ɪnˈdɪr/

endear

Meaning
To cause someone to be loved or liked.
Example
Her kindness and generosity endeared her to the community.
C1 adjective /ɪˈɡriːdʒəs/

egregious

Meaning
Outstandingly bad; shocking.
Example
The company was fined for its egregious safety violations.
C1 noun /ˈef.ɪ.dʒi/

Effigy

Meaning
a sculpture or model of a person, especially one made as a protest
Example
The protesters burned an effigy of the corrupt politician in the square.
C1 verb /ɪmˈboʊl.dən/

embolden

Meaning
To give someone the courage or confidence to do something.
Example
The coach's words emboldened the team to play aggressively.
C1 verb /ɪˈdʒektɪd/

ejected

Meaning
to force someone or something to leave a place; to push or throw something out forcefully
Example
The pilot was ejected from the aircraft during the emergency.
C1 verb /ɪˈnʌnsieɪt/

enunciate

Meaning
to pronounce words clearly; to express an idea clearly
Example
The teacher asked him to enunciate each word.
C1 verb /ɪnˈɡreɪv/

engrave

Meaning
to cut or carve a design, letter, or pattern into a hard surface
Example
The craftsman engraved her name on the silver ring.
C1 verb /ɪˈloʊp/

elope

Meaning
to run away secretly in order to get married, especially without parental consent
Example
The young couple decided to elope to another city.
C1 noun /ˈɜːrθənˌwɛr/

earthenware

Meaning
pottery made of clay and hardened by heat
Example
The shop displayed beautiful earthenware pots and bowls.
C1 noun /ɛkˈspeɪtriət/

expatriate

Meaning
a person who lives outside their native country
Example
Many expatriates gather in the city’s international community.
C1 adjective /ˈɛntərˌpraɪzɪŋ/

enterprising

Meaning
showing initiative and resourcefulness; willing to take risks to achieve success
Example
She is an enterprising young entrepreneur.
C1 adjective /ˌɛɡzɪˈstɛnʃəl/

existential

Meaning
Relating to human existence, often concerning meaning or purpose of life.
Example
She went through an existential crisis during her midlife.
C1 verb /ɪˈmænsɪpeɪt/

emancipate

Meaning
to set someone free from legal, social, or political restrictions; to liberate from slavery or oppression
Example
The law was designed to emancipate slaves and grant them full citizenship.
C1 noun /ˌiː.kəˈnɒm.ɪk dɪˈspær.ɪ.ti/

Economic Disparity

Meaning
The unequal distribution of income and opportunity between different groups in society.
Example
Addressing economic disparity is crucial for social stability.
C1 verb ɪɡˈzɛm.plɪ.faɪ

exemplify

Meaning
To be a typical example of or to illustrate something clearly, to show as an example or demonstrate.
Example
His dedication exemplifies true leadership.
C1 noun ˈiːkəʊˌsɪstəm ˈsɜːvɪsɪz

ecosystem services

Meaning
The benefits people obtain from ecosystems.
Example
Forests provide valuable ecosystem services, such as purifying air and water.
C1 verb /ɪˈleɪt/

elate

Meaning
To make someone very happy or proud.
Example
The success of the project elated the whole team.
C1 noun ˈiː.θɒs

ethos

Meaning
The characteristic spirit of a culture, era, or community as manifested in its beliefs and aspirations.
Example
The company's ethos is built on innovation and integrity.
C1 adjective /ˌiːvænˈdʒɛlɪkəl/

evangelical

Meaning
Relating to the Christian gospel, especially the teachings that emphasize personal faith and the authority of the Bible.
Example
She grew up in an evangelical church community.
C1 adjective /ˌiːɡəˈtɪstɪkəl/

egotistical

Meaning
Excessively self-absorbed or conceited.
Example
Her egotistical behavior made it difficult for her to maintain friendships.
C1 verb /ˈɛm.jʊˌleɪt/

emulate

Meaning
to imitate someone or something with the intent to equal or surpass
Example
Young athletes often emulate their idols.
C1 noun /ˈek.stə.si/

Ecstasy

Meaning
an overwhelming feeling of great happiness or joyful excitement
Example
She was in complete ecstasy when she heard the good news.
C1 noun ˈɛksəʊˌplænɪt

exoplanet

Meaning
A planet that orbits a star outside the solar system.
Example
Astronomers have discovered thousands of exoplanets in the last decade.
C1 adjective /juːˈfɔːrɪk/

euphoric

Meaning
Characterized by or feeling intense excitement and happiness.
Example
The fans were euphoric after their team's victory.
C1 adjective ɛnˈdɛm.ɪk

endemic

Meaning
Native and restricted to a certain place.
Example
The Bengal tiger is endemic to the Indian subcontinent.
C1 noun /ˈɛdɪfɪs/

edifice

Meaning
A large, impressive building or structure.
Example
The museum is an impressive edifice in the city center.
C1 adjective /ˈɜːrstwaɪl/

erstwhile

Meaning
former or in the past
Example
They were erstwhile friends but no longer speak.
C1 noun /ɪnˈtaɪərəti/

entirety

Meaning
the whole of something; the complete form
Example
He watched the movie in its entirety.
C1 verb /ɪmˈbrɔɪdər/

embroider

Meaning
to decorate fabric with patterns using a needle and thread
Example
She embroidered flowers on the pillowcase.
C1 adjective /ˌɛm.briˈɒn.ɪk/

embryonic

Meaning
in an early or undeveloped stage; relating to an embryo
Example
The project is still in its embryonic stage.
C1 noun ˌɛkstərˈnælɪtiz

externalities

Meaning
A side effect or consequence of an industrial or commercial activity.
Example
Pollution is a negative externality of industrialization.
C1 noun ˌiː.kəʊˈfrend.li ˌɜː.bən.aɪˈzeɪ.ʃən

eco-friendly urbanization

Meaning
The development of cities in a way that is not harmful to the environment.
Example
Eco-friendly urbanization reduces environmental degradation.
C1 noun /ɪnˈtaɪtəlmənt/

entitlement

Meaning
the belief that one is inherently deserving of privileges or special treatment; a right to benefits
Example
The program provides entitlement to health care.
C1 adverb ɪkˌsperɪˈmentəli

experimentally

Meaning
In a way that is based on or derived from experiment and observation rather than theory.
Example
Bose demonstrated findings experimentally.
C1 noun /eb/

Ebb

Meaning
the receding tide; a gradual decline or reduction
Example
The fishermen waited for the ebb before returning to shore.
C1 adjective ˌɜː.ɡəˈnɒm.ɪk

ergonomic

Meaning
Designed for efficiency and comfort in the working environment; user-friendly and reducing strain.
Example
The chair has an ergonomic design for better posture.
C1 noun /ˈɛstjʊəri/

estuary

Meaning
the tidal mouth of a large river, where the tide meets the stream
Example
The city is located near the estuary of the river.
C1 noun /ˌɛksɛnˈtrɪsəti/

eccentricity

Meaning
the quality of being unconventional or slightly strange
Example
His eccentricity made him both admired and misunderstood.
C1 noun /ˈɑːnkɔːr/

encore

Meaning
An additional performance demanded by an audience at the end of a show.
Example
The band returned to the stage for an encore.
C1 noun /ˌɛks.həˈleɪ.ʃən/

exhalation

Meaning
The action of breathing out.
Example
Slow exhalation calms the nervous system.
C1 verb /ɪkˈskriːt/

excrete

Meaning
to eliminate waste matter from the body
Example
Humans excrete carbon dioxide through breathing.
C1 verb /ɪnˈkæp.sjʊ.leɪt/

encapsulate

Meaning
To express the essential features of something succinctly; to summarize or contain within.
Example
The introduction should encapsulate the main points of the article.
C1 adjective /ˈɜːrθi/

earthy

Meaning
resembling or suggestive of earth or soil; simple, natural, and sometimes coarse
Example
The dish had a rich, earthy flavor from the mushrooms.
C1 verb /ɪnˈtaɪs/

entice

Meaning
to attract or tempt someone by offering something appealing
Example
The advertisement was designed to entice customers into the store.
C1 noun /ˌiː.kwɪˈlɪb.ri.əm/

equilibrium

Meaning
A state of physical balance or stability in physical, mental, or economic conditions.
Example
The market reached an equilibrium between supply and demand.
C1 noun /ɪˌlæbəˈreɪʃən/

elaboration

Meaning
the process of adding more detail or expanding on something
Example
The teacher appreciated the student's elaboration of the topic.
C1 noun ˈɛf.lu.ənt

effluent

Meaning
Liquid waste or sewage discharged into a river or the sea.
Example
Factory effluent contaminates nearby rivers and lakes.
C1 noun ɪˌlæˈstɪs.ə.ti

elasticity

Meaning
The responsiveness of demand or supply to changes in price.
Example
The elasticity of demand for luxury goods is high.
C1 noun /ˈen.mə.ti/

Enmity

Meaning
a state or feeling of active opposition or hostility
Example
The enmity between the two families lasted for generations.
C1 verb /ɪkˈstɪŋ.ɡwɪʃ/

extinguish

Meaning
to put out a fire, light, or to end something
Example
The firefighters managed to extinguish the blaze within an hour.
C1 noun /ˈiːɡoʊˌɪzəm/

egoism

Meaning
An ethical theory that treats self-interest as the foundation of morality; also, excessive preoccupation with oneself.
Example
His decisions were often driven by egoism rather than concern for others.
C1 verb /ɪˈlɪsɪt/

elicit

Meaning
To draw out a response, answer, or reaction from someone.
Example
The teacher’s question elicited thoughtful answers from the students.
C1 verb /ˈɛkstrəˌdaɪt/

extradite

Meaning
to hand over a person accused or convicted of a crime to another country or state
Example
The government agreed to extradite the fugitive to his home country.
C1 adjective /ɪkˈstreɪ.ni.əs/

extraneous

Meaning
Not directly related or essential to the matter at hand; irrelevant.
Example
The editor removed extraneous details from the report.
C1 adjective /ɪɡˈzæspəˌreɪtɪd/

exasperated

Meaning
greatly annoyed or irritated
Example
She gave him an exasperated look after his repeated mistakes.
C1 noun ɪnˈdaʊmənt

endowment

Meaning
An income or form of property given or bequeathed to someone.
Example
The university received a large endowment for research.
C1 verb ɪɡˈzæsərbeɪt

exacerbate

Meaning
To make a problem, bad situation, or negative feeling worse.
Example
Climate change exacerbates flooding issues.
C1 noun /ɪˈpɪt.ə.mi/

epitome

Meaning
A perfect example of a particular quality or type; the best representation of something.
Example
She is the epitome of grace and kindness.
C1 adjective /ɪˈlɪptɪkl/

elliptical

Meaning
Having the shape of an ellipse; also, a style of speech that is concise and sometimes obscure.
Example
The planet follows an elliptical orbit around the sun.
C1 adjective ɪˈroʊ.ni.əs

erroneous

Meaning
Wrong; incorrect.
Example
His assumptions were completely erroneous.
C1 verb /ɛmˈbɛzəl/

embezzle

Meaning
to steal or misuse money or property entrusted to one's care
Example
The accountant was arrested for embezzling company funds.
C1 adjective /ˈɜːrθ.li/

Earthly

Meaning
relating to the earth or human life; worldly; material rather than spiritual
Example
He focused on earthly pleasures rather than spiritual growth.
C1 verb /iːk/

eke

Meaning
to make a small amount of something last longer by using it sparingly
Example
The family tried to eke out their savings during the tough months.
C1 adjective ɪmˈpɪr.ɪ.kəl

empirical

Meaning
Based on, concerned with, or verifiable by observation or experience rather than theory or pure logic.
Example
Scientific research relies on empirical evidence.
C1 noun /ˈiːzl̩/

easel

Meaning
a frame for supporting an artist's canvas while painting or drawing
Example
The artist placed the canvas on the easel before starting to paint.
C1 noun ɪˈpɪf.ə.ni

epiphany

Meaning
A moment of sudden revelation or insight.
Example
He had an epiphany about his true purpose in life.
C1 adjective /ˈen.vi.ə.bəl/

Enviable

Meaning
causing envy; desirable
Example
Her success was enviable among her peers.
C1 adjective /ˈɜːr.θən/

Earthen

Meaning
made of earth or clay; relating to pottery or ceramic materials
Example
The kitchen had beautiful earthen pots for storage.
C1 adjective ɪɡˈzɛmpləri

exemplary

Meaning
Serving as a desirable model; representing the best of its kind.
Example
She was praised for her exemplary work ethic and dedication.
C1 noun /ˈiː.dən/

Eden

Meaning
a place or state of great happiness; paradise
Example
The garden was like Eden, filled with beautiful flowers and peaceful atmosphere.
C1 adjective /ˈen.vi.əs/

Envious

Meaning
feeling or showing envy; jealous
Example
She felt envious of her friend's new car.
C1 adjective /ɪɡˈzɪləreɪtɪd/

exhilarated

Meaning
feeling very happy, animated, or elated
Example
She felt exhilarated after finishing the marathon.
C1 adjective /ɪnˈɡroʊst/

engrossed

Meaning
completely absorbed or deeply involved in something
Example
She was so engrossed in the book that she forgot the time.
C1 adjective /ɪkˈstætɪk/

ecstatic

Meaning
Feeling or expressing overwhelming happiness or excitement.
Example
The fans were ecstatic after their team won the championship.
C1 verb /ɪnˈʃraɪn/

enshrine

Meaning
to preserve or cherish something as sacred or important
Example
The constitution enshrines the right to freedom of speech.
C1 adjective /ɪɡˈzɔːr.bɪ.tənt/

exorbitant

Meaning
Unreasonably high in price or cost; excessive.
Example
The hotel charged an exorbitant price for a basic room.
C1 noun /ɪˈlɛk.trəʊ.laɪts/

electrolytes

Meaning
Minerals in body fluids that carry an electric charge and are essential for many bodily functions.
Example
Electrolytes help maintain proper fluid balance in the body.
C1 adjective /ˈɜːr.nɪst/

Earnest

Meaning
sincere; genuine; showing deep and serious conviction
Example
He made an earnest attempt to solve the problem.
C1 noun /ɪkˈspæns/

expanse

Meaning
a wide, open area of land, sea, or sky
Example
The desert is a vast expanse of sand and rock.
C1 adjective /ˌɛnɪɡˈmætɪk/

enigmatic

Meaning
mysterious and difficult to interpret or understand
Example
He gave me an enigmatic smile.
C1 adjective /ɪnˈlaɪ.tənd/

Enlightened

Meaning
having or showing a rational, modern outlook; having spiritual knowledge or understanding
Example
The enlightened teacher shared wisdom with all her students.
C1 verb /ɪnˈθrɔːl/

enthrall

Meaning
to captivate or hold someone’s attention completely
Example
The magician’s tricks enthralled the children.
C1 verb /ɪɡˈzuːd/

exude

Meaning
to display a quality strongly and openly; to release a liquid or smell slowly
Example
He exudes confidence whenever he speaks in public.
C1 verb /ɪˈlæps/

elapse

Meaning
to pass or go by, usually referring to time
Example
Several hours elapsed before he finally returned home.
C1 noun /ˌekspəˈzɪʃən/

exposition

Meaning
a detailed explanation or a large public exhibition
Example
The scientist gave a clear exposition of the theory.
C1 noun /ˈɜːr.θən pɒt/

Earthen pot

Meaning
a container made of baked clay or earth, used for cooking or storing
Example
The earthen pot keeps water naturally cool in summer.
C1 adjective /ɪkˈsiːdɪŋ/

Exceeding

Meaning
going beyond; surpassing; extremely
Example
The project was completed with exceeding excellence.
C1 verb /ɪˈvɪkt/

evict

Meaning
To expel someone from a property, usually by legal process.
Example
The landlord decided to evict the tenants for not paying rent.