effluent
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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 /eb/

Ebb

Meaning
the receding tide; a gradual decline or reduction
Example
The fishermen waited for the ebb before returning to shore.
C1 verb /ˈɛm.ə.neɪt/

emanate

Meaning
To come out or spread from a source.
Example
A sweet fragrance emanated from the garden.
C1 adjective /ɪˈmeɪʃieɪtɪd/

emaciated

Meaning
Abnormally thin or weak, usually due to illness or lack of food.
Example
The emaciated dog was rescued from the abandoned house.
C1 adjective /ɪˈluːsɪv/

elusive

Meaning
Difficult to find, catch, or achieve; hard to understand or define.
Example
The solution to the problem proved elusive.
C1 verb /ˈɛnərˌdʒaɪz/

energize

Meaning
To give energy or vitality to something or someone.
Example
The motivational speech helped energize the 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 verb /ɪkˈstoʊl/

extol

Meaning
to praise enthusiastically and highly
Example
The teacher extolled the student's dedication and hard work.
C1 verb ɪˈluːd

elude

Meaning
Evade or escape from, typically in a skillful or cunning way; avoid being caught.
Example
The thief managed to elude the police.
C1 adjective /ɪˈstiːmd/

Esteemed

Meaning
respected and admired; held in high regard
Example
He is an esteemed professor at the university.
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 verb ɪˈluː.sɪ.deɪt

elucidate

Meaning
make (something) clear; explain.
Example
The professor elucidated the theory with simple examples.
C1 verb /ɪˈlæps/

elapse

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

elate

Meaning
To make someone very happy or proud.
Example
The success of the project elated the whole team.
C1 adjective ɪˈθɪə.ri.əl

ethereal

Meaning
Extremely delicate and light in a way that seems too perfect for this world.
Example
Her voice had an ethereal quality.
C1 noun /ˈɜːrθənˌwɛr/

earthenware

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

emblem

Meaning
A symbolic object, design, or figure representing an idea, group, or identity.
Example
The dove is an emblem of peace.
C1 verb /ˈiːvzdrɒp/

eavesdrop

Meaning
to secretly listen to a conversation
Example
She stood near the door to eavesdrop on their conversation.
C1 verb /ɛtʃ/

etch

Meaning
to cut or carve a design onto a surface
Example
The artist etched her initials into the glass.
C1 noun /ˌɛksɪˈkjuːʃənər/

executioner

Meaning
A person who carries out a death sentence by execution.
Example
The executioner prepared the gallows for the condemned prisoner.
C1 noun /ˈɛkstrəˌvɜːrt/

extrovert

Meaning
a person who is outgoing, sociable, and energized by being around other people
Example
As an extrovert, she enjoys meeting new people at social events.
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 adjective /ɪˈvæljʊətɪv/

evaluative

Meaning
Relating to or involving evaluation or assessment.
Example
The evaluative phase of the project involves assessing its success.
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 adjective /ɪˈkwɛstriən/

equestrian

Meaning
Relating to horse riding or horseback riders.
Example
She won several equestrian competitions.
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 /ɪˈleɪtɪd/

elated

Meaning
Extremely happy and excited.
Example
She was elated when she heard the good news.
C1 adjective /ɪˈspeʃəl/

especial

Meaning
Particularly remarkable or significant; distinguished from others
Example
This is an especial opportunity you should not miss.
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 /ɪnˈɡroʊs/

engross

Meaning
to absorb all the attention or interest of someone
Example
She was so engrossed in the book that she forgot the time.
C1 noun /ˈiːɡətɪst/

egotist

Meaning
A person who is excessively self-centered or talks too much about themselves.
Example
The egotist dominated the conversation by talking only about his own achievements.
C1 adjective /ɪkˈsiːdɪŋ/

Exceeding

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

equalize

Meaning
To make equal or level in status, value, or amount.
Example
The team equalized the score in the last minute.
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 /ɪkˈspend/

expend

Meaning
to use up or consume; to spend energy or resources
Example
He expended all his energy on the project.
C1 verb /ɪmˈbrɔɪl/

embroil

Meaning
to involve someone deeply in a conflict, argument, or difficult situation
Example
The politician was embroiled in a major corruption scandal.
C1 noun/verb /ɪˈstiːm/

esteem

Meaning
Respect and admiration, typically for a person.
Example
She is held in high esteem by her colleagues.
C1 noun /ˌɛkstrəˈdɪʃən/

extradition

Meaning
the official process of sending someone accused of a crime to another country or state
Example
The extradition of the suspect was delayed due to legal issues.
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 /ɪɡˈzɪləreɪtɪd/

exhilarated

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

electromagnetic

Meaning
Relating to both electricity and magnetism or their interaction.
Example
Electromagnetic forces repel protons.
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 /ɪnˈθrɔː.lɪŋ/

enthralling

Meaning
Captivating and holding one's attention completely; fascinating.
Example
The movie was enthralling, keeping the audience engaged till the end.
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 /ɪkˈstrɛmɪti/

extremity

Meaning
The farthest point or limit of something; a severe or extreme condition.
Example
He was pushed to the extremity of his patience.
C1 adjective /ɪkˈspiːdiənt/

expedient

Meaning
suitable or convenient for achieving a particular end, sometimes at the expense of morality
Example
It was expedient to take the shortcut despite the risks.
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 /ɪˈklɪps/

Eclipse

Meaning
an obscuring of light from one celestial body by another; a decline or loss
Example
The total solar eclipse darkened the sky for several minutes.
C1 verb /ɪˈlɛktrɪfaɪ/

electrify

Meaning
to charge with electricity; to excite or thrill intensely
Example
The speaker's speech electrified the audience.
C1 adjective /ɪˈɡriːdʒəs/

egregious

Meaning
Outstandingly bad; shocking.
Example
The company was fined for its egregious safety violations.
C1 noun /ˈaɪ.wɪt.nəs/

Eyewitness

Meaning
a person who has seen something happen and can give evidence about it
Example
The police interviewed several eyewitnesses to the accident.
C1 adjective, verb /ɪɡˈzɛmpt/

exempt

Meaning
Free from an obligation or liability imposed on others.
Example
Students with high grades are exempt from the final exam.
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 /ɪnˈtæŋɡəl/

entangle

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

embroider

Meaning
to decorate fabric with patterns using a needle and thread
Example
She embroidered flowers on the pillowcase.
C1 noun /ɪɡˌzæm.ɪˈniː/

Examinee

Meaning
a person who is being tested in an examination
Example
Each examinee was given two hours to complete the test.
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 adjective ɛnˈdɛm.ɪk

endemic

Meaning
Native and restricted to a certain place.
Example
The Bengal tiger is endemic to the Indian subcontinent.
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 verb ɪɡˈzæsərbeɪt

exacerbate

Meaning
To make a problem, bad situation, or negative feeling worse.
Example
Climate change exacerbates flooding issues.
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 /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 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 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 /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 adjective /ɪˈklɛktɪk/

eclectic

Meaning
Selecting or deriving ideas, styles, or tastes from a broad and diverse range of sources.
Example
Her taste in music is eclectic, ranging from classical to hip-hop.
C1 noun /ˌɛlɪˈveɪʃən/

elevation

Meaning
The act of raising something to a higher position or level.
Example
The hikers reached a high elevation after hours of climbing.
C1 noun /ɪɡˈzɛkjətər/

executor

Meaning
A person appointed to carry out the terms of someone's will after their death.
Example
The executor managed the estate according to the deceased’s wishes.
C1 noun /ɪˈlɪpsɪs/

ellipsis

Meaning
The omission of words in a sentence, represented by three dots (...).
Example
The writer used an ellipsis to show that part of the quote was omitted.
C1 noun /ɪkˈskriːʃən/

excretion

Meaning
the process of eliminating waste matter from the body
Example
Excretion is vital for maintaining a healthy body.
C1 noun /ɪˈleɪʃən/

elation

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

encyclopedic

Meaning
Having comprehensive knowledge of many subjects; relating to or characteristic of an encyclopedia.
Example
Her encyclopedic knowledge of history amazed everyone at the conference.
C1 verb /ɪˈkɒnəmaɪz/

economize

Meaning
To reduce spending or use resources carefully.
Example
Families are trying to economize by cutting unnecessary expenses.
C1 adjective /ˈed.jʊ.keɪ.tɪv/

Educative

Meaning
providing education; instructive; informative
Example
The documentary was highly educative and informative.
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 /ɪˈfɛm.ər.əl/

ephemeral

Meaning
Lasting for a very short time; temporary or transitory.
Example
The beauty of cherry blossoms is ephemeral.
C1 noun ˈiː.pɒk

epoch

Meaning
A period of time in history or a person's life, typically one marked by notable events or particular characteristics.
Example
The invention of the internet marked a new epoch in human history.
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 noun /ˌekspəˈzɪʃən/

exposition

Meaning
a detailed explanation or a large public exhibition
Example
The scientist gave a clear exposition of the theory.
C1 adjective /ˈevər ˈlæstɪŋ/

Ever-lasting

Meaning
eternal; permanent; enduring forever
Example
Their love is ever-lasting and will never fade.
C1 adjective /ɪɡˈzɔːstɪv/

exhaustive

Meaning
Fully comprehensive and including all possibilities.
Example
The report provides an exhaustive analysis of the issue.
C1 verb /ɪkˈstɔːrt/

extort

Meaning
to obtain something, especially money, by force, threats, or unfair means
Example
The gang attempted to extort money from local shopkeepers.
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 phrase ˈiː.kəʊˌsɪs.təm kəˈlæps

ecosystem collapse

Meaning
The complete breakdown of an ecological system, resulting in the inability to maintain its structure and function.
Example
Unchecked deforestation can lead to ecosystem collapse.
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 /ɪɡˈzæktɪŋ/

exacting

Meaning
demanding a lot of effort, attention, or precision
Example
She is known for her exacting standards in design.
C1 noun /ˈiːkwɪnɒks/

equinox

Meaning
The time or date when day and night are of equal length, occurring twice a year.
Example
The spring equinox marks the beginning of longer days.
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 /ˈɛn.kleɪv/

enclave

Meaning
a distinct area or group enclosed within a larger one
Example
The city has a small Italian enclave where traditions are preserved.
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 /ɪnˈθjuːz/

enthuse

Meaning
to express excitement or admiration
Example
She enthused about her trip to Italy.
C1 noun ɪˌməʊ.ʃəˈnæl.ɪ.ti

emotionality

Meaning
The quality of being driven by emotions rather than reason; emotional responsiveness.
Example
His emotionality often influenced his decisions.
C1 adjective ˈɛl.ə.kwənt

eloquent

Meaning
Fluent or persuasive in speaking or writing; clearly expressing or indicating something.
Example
Her eloquent speech inspired the entire audience.
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 /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 noun ˈeʃ.ə.lɒn

echelon

Meaning
A level or rank in an organization, a profession, or society.
Example
He climbed to the upper echelon of the corporate world.
C1 adjective /ɪˈmɜːrdʒənt/

emergent

Meaning
just coming into existence or becoming prominent
Example
The emergent startup quickly attracted investors.
C1 adjective /ɪnˈdjʊər.ə.bəl/

Endurable

Meaning
able to be endured; bearable; tolerable
Example
The pain was endurable with proper medication.
C1 noun /juːˈfɔː.ri.ə/

euphoria

Meaning
A feeling or state of intense excitement and happiness; elation.
Example
Winning the championship brought a sense of euphoria.
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 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 /ɪˈnæməl/

enamel

Meaning
a hard, glossy substance used as a protective or decorative coating; the hard outer layer of teeth
Example
The dentist explained that enamel protects the teeth from decay.
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 /ˈjuː.fə.mɪ.zəm/

euphemism

Meaning
A mild or indirect term substituted for one considered too harsh or direct; polite expression for something unpleasant.
Example
The phrase "passed away" is a euphemism for "died".
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 /ɪkˈstrækʃən/

extraction

Meaning
the act of removing something, especially by pulling it out
Example
The extraction of oil from the ground requires special equipment.
C1 noun /ɪˈnɪɡ.mə/

enigma

Meaning
A person or thing that is mysterious, puzzling, or difficult to understand.
Example
Life remains an enigma to many.
C1 noun /ˈɛspiənɑːʒ/

espionage

Meaning
The practice of spying or using spies to gather secret information, usually for political or military purposes.
Example
The agent was arrested on charges of espionage against the state.
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 adjective /ɪˈrɒtɪk/

erotic

Meaning
relating to or tending to arouse sexual desire or excitement
Example
The novel contained several erotic scenes.
C1 adjective /ɪˈstreɪndʒd/

estranged

Meaning
no longer close or affectionate with someone; alienated
Example
She felt estranged from her family after the long dispute.
C1 noun /ɪkˈspoʊnənt/

exponent

Meaning
a person who supports, promotes, or explains an idea; in math, a symbol denoting power
Example
She is a leading exponent of modern dance.
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 /ˈɛf.ɪ.kə.si/

efficacy

Meaning
The ability to produce a desired or intended result; effectiveness.
Example
The efficacy of the vaccine has been proven in trials.
C1 noun ɪˈveɪ.ʒən

evasion

Meaning
The practice of avoiding or escaping from something, especially responsibility or duty.
Example
His evasion of responsibilities frustrated his colleagues.
C1 noun /ɛnˈdɔːr.fɪnz/

endorphins

Meaning
Chemical compounds produced by the brain that reduce pain and create feelings of happiness.
Example
Exercise releases endorphins, reducing stress and pain.
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 adjective /ɪɡˈzuːbərənt/

exuberant

Meaning
full of energy, excitement, and cheerfulness
Example
The children were exuberant after winning the game.
C1 noun /ˈɒntʊrɑːʒ/

entourage

Meaning
A group of people attending or surrounding an important person.
Example
The celebrity arrived with her entourage of assistants and bodyguards.