electrolytes
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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.
B2 adjective /ɪˈlæs.tɪk/

Elastic

Meaning
able to stretch and return to original shape; flexible; adaptable
Example
The elastic band can stretch and return to its original shape.
C2 verb /ɪˈfjuːz/

effuse

Meaning
To pour out or express feelings freely and openly.
Example
She effused gratitude for the help she received.
B1 noun /edʒ/

Edge

Meaning
the outside limit of an object or area; a sharp side of a blade
Example
Be careful not to cut yourself on the sharp edge of the knife.
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.
C2 noun /ˌɛntəˈmɒlədʒi/

entomology

Meaning
The scientific study of insects.
Example
She studied entomology to understand the behavior of bees.
A2 noun /ˈiː.ɡəl/

Eagle

Meaning
large bird of prey with powerful wings and sharp talons
Example
The eagle soared high above the mountains.
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.
C2 noun /ˈjuːər/

ewer

Meaning
a large jug with a wide mouth, especially used in the past for carrying water
Example
The servant filled the ewer with fresh water.
A2 noun /ɪkˈsaɪt.mənt/

Excitement

Meaning
a feeling of great enthusiasm and eagerness
Example
The children could barely contain their excitement about the upcoming field trip.
B2 noun /ɪnˈrɪtʃ.mənt/

enrichment

Meaning
The action of improving or enhancing the quality or value of something.
Example
Cultural enrichment fosters a deeper understanding of traditions.
C2 noun /ˌiː.tiˈɒ.lə.dʒi/

etiology

Meaning
the cause or origin of a disease or condition
Example
Doctors are studying the etiology of the new virus.
C2 noun /ˈɛkwɪpɔɪz/

equipoise

Meaning
A state of balance or equilibrium.
Example
Her calmness created an equipoise in the heated debate.
A2 noun /ɪksˈtʃeɪndʒ/

Exchange

Meaning
an act of giving one thing and receiving another in return
Example
The exchange of gifts is a common tradition during the holidays.
C1 adjective /ɪkˈskruːʃieɪtɪŋ/

excruciating

Meaning
causing extreme physical or mental pain
Example
She was in excruciating pain after the accident.
A2 adverb /ɪɡˈzækt.li/

Exactly

Meaning
precisely; accurately; in complete agreement
Example
Tell me exactly what happened during the meeting.
C2 adjective /ˈɛdɪfaɪɪŋ/

edifying

Meaning
Providing moral or intellectual instruction or enlightenment.
Example
The documentary was both entertaining and edifying.
C1 adjective /ˈɜːr.nɪst/

Earnest

Meaning
sincere; genuine; showing deep and serious conviction
Example
He made an earnest attempt to solve the problem.
B2 noun ˌiːkəˈlɒdʒɪkəl ˈbæləns

ecological balance

Meaning
A state of dynamic equilibrium within a community of organisms.
Example
Maintaining ecological balance is essential for a sustainable planet.
B2 noun /ˈes.əns/

Essence

Meaning
the intrinsic nature or indispensable quality of something
Example
The essence of good teaching is the ability to inspire students.
C1 adjective /ˈen.vi.əs/

Envious

Meaning
feeling or showing envy; jealous
Example
She felt envious of her friend's new car.
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.
C2 adjective /ˌɛlɪˈfæntaɪn/

elephantine

Meaning
Huge, clumsy, or resembling an elephant in size or movement.
Example
The man moved with an elephantine grace.
A2 adjective /ˈɛkstrə/

extra

Meaning
More than what is usual, expected, or necessary
Example
She brought some extra food for the picnic.
C1 noun /ˈem.ɪ.nəns/

Eminence

Meaning
fame or recognized superiority; high rank or status
Example
The professor achieved eminence in the field of quantum physics.
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.
C2 noun /ˈɛskwaɪər/

esquire

Meaning
A title of respect often used after a man's name, especially for lawyers in the United States.
Example
John Smith, Esquire, will be representing the client in court.
C2 verb /ɪˈstreɪndʒ/

estrange

Meaning
to cause someone to no longer be close or affectionate; to alienate
Example
His constant criticism began to estrange him from his friends.
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.
B2 verb /ɪmˈbɒdi/

embody

Meaning
To give tangible or visible form to an idea, quality, or feeling.
Example
She embodies the spirit of generosity.
C2 noun /ɪɡˈzɔːrbɪtəns/

exorbitance

Meaning
The quality of being excessive, unreasonable, or going beyond proper limits.
Example
The exorbitance of the hotel's prices shocked the tourists.
B1 noun /ɪˈskeɪp/

Escape

Meaning
an act of breaking free from confinement or control; a way out
Example
The prisoner's escape from the jail shocked the authorities.
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 /ˈɛm.ɪ.nənt/

eminent

Meaning
Famous and respected within a particular sphere or profession.
Example
He is an eminent scientist known for groundbreaking research.
C2 adjective /ɪˈpɪstələri/

epistolary

Meaning
Related to the writing of letters; expressed in or through letters.
Example
The novel is written in an epistolary style, consisting of letters between characters.
B2 verb /ˈɛmɪˌɡreɪt/

emigrate

Meaning
To leave one's own country in order to settle permanently in another.
Example
Many people emigrated from Europe to America in the 19th century.
C2 adjective /ɪkˈsɛpʃənəbl/

exceptionable

Meaning
Open to objection; causing disapproval.
Example
His rude remarks were considered exceptionable by everyone present.
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.
C2 adjective /ˌɛkspəˈdɪʃəs/

expeditious

Meaning
Done with speed and efficiency.
Example
The expeditious delivery of the package was appreciated.
C1 noun ɪnˌvaɪ.rənˈmen.təl ˌtræns.fəˈmeɪ.ʃən

environmental transformation

Meaning
A significant change in environmental conditions or ecological systems.
Example
The city demonstrates environmental transformation.
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 noun /ˈɛpɪθɛt/

epithet

Meaning
A descriptive phrase or word used to characterize someone or something, often as a nickname.
Example
He earned the epithet ‘The Great’ for his remarkable achievements.
C2 verb /ɪnˈræptʃər/

enrapture

Meaning
To fill someone with great delight or joy.
Example
The beautiful music enraptured the audience.
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 noun /ˌɛtɪˈmɒlədʒi/

etymology

Meaning
The study of the origin of words and how their meanings and forms have evolved.
Example
The etymology of the word 'salary' comes from the Latin word for salt.
C1 verb /ɪˈleɪt/

elate

Meaning
To make someone very happy or proud.
Example
The success of the project elated the whole team.
A1 verb /iːt/

eat

Meaning
to put food in the mouth and chew and swallow it
Example
We eat dinner at 7 PM.
A2 adverb /ɪˈspeʃəli/

Especially

Meaning
particularly; in particular; above all
Example
I love all fruits, especially mangoes.
C2 noun /ˌɛpɪˈsaɪklɔɪd/

epicycloid

Meaning
a curve traced by a point on the circumference of a circle that rolls around the outside of another circle
Example
The mathematician demonstrated how to draw an epicycloid.
B1 adjective /ˌel.ɪˈmen.tər.i/

Elementary

Meaning
basic; fundamental; primary level
Example
He learned elementary mathematics in school.
C2 noun /ˈiːən/

eon

Meaning
an indefinitely long period of time; an age
Example
Dinosaurs lived millions of years ago, in a different eon.
C2 noun /ɪˈskʌtʃən/

escutcheon

Meaning
a shield or emblem bearing a coat of arms
Example
The family crest was displayed on the escutcheon above the fireplace.
C2 verb /ˌɛvəˈnɛs/

evanesce

Meaning
To disappear gradually; to fade away.
Example
The mist began to evanesce as the sun rose higher.
B2 verb ˈɛkəʊd

echoed

Meaning
To repeat or resound; to be reminiscent of something.
Example
The words of gratitude echoed in his heart.
A2 preposition/conjunction /ɪkˈsɛpt/

except

Meaning
not including; other than
Example
Everyone was invited except John.
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 /ɪɡˈzɜːr.ʃən/

exertion

Meaning
Using energy or effort to achieve something.
Example
Excessive exertion can lead to fatigue and burnout.
B2 verb ɪmˈpaʊərɪŋ

empowering

Meaning
Giving someone the authority or power to do something; making someone stronger and more confident.
Example
Empowering children can lead to societal progress.
B2 verb /ɪɡˈzɔːst/

exhaust

Meaning
to tire out completely; to use up resources
Example
The long journey exhausted the children.
C1 verb /ɪnˈlaɪvən/

enliven

Meaning
to make something more lively, interesting, or cheerful
Example
Her jokes helped enliven the dull meeting.
C1 adjective /ˌɛk.spəˈnɛn.ʃəl/

exponential

Meaning
Rapid growth or expansion at an increasing rate
Example
Technology is advancing at an exponential rate.
C2 adjective /ˌɛvəˈnɛsənt/

evanescent

Meaning
Quickly fading or disappearing; lasting for only a very short time.
Example
The beauty of the sunset was evanescent, fading within minutes.
C2 noun /ɛnˈkoʊmiəm/

encomium

Meaning
A speech or piece of writing that praises someone or something highly.
Example
He delivered an encomium to his retiring teacher.
C1 verb /ɪˈnjuːməˌreɪt/

enumerate

Meaning
to mention things one by one; to list or count
Example
She enumerated the reasons for her decision.
C2 noun /ɪˌpɪstəˈmɒlədʒi/

epistemology

Meaning
The branch of philosophy that studies the nature, origin, and scope of knowledge.
Example
Epistemology explores the difference between justified belief and opinion.
C1 verb ɪˈluː.sɪ.deɪt

elucidate

Meaning
make (something) clear; explain.
Example
The professor elucidated the theory with simple examples.
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 ɪˌræd.ɪˈkeɪ.ʃən

eradication

Meaning
The complete destruction or elimination of something unwanted.
Example
Carbon eradication is a key goal of the project.
C2 noun /ˈiːɡres/

egress

Meaning
The action of going out or leaving a place; an exit.
Example
The emergency door provided an egress for the trapped workers.
C1 verb /ɪˈlæps/

elapse

Meaning
to pass or go by, usually referring to time
Example
Several hours elapsed before he finally returned home.
A2 noun /ɪˈlek.trɪk fæn/

Electric fan

Meaning
a device with rotating blades that creates airflow to cool or ventilate a room
Example
The electric fan keeps the room cool during hot summer days.
C2 noun /ˈɛmɪsɛri/

emissary

Meaning
A person sent on a special mission, usually as a diplomatic representative.
Example
The king sent an emissary to negotiate peace.
C1 adjective ɪkˈskwɪzɪt

exquisite

Meaning
Extremely beautiful and delicate.
Example
The exquisite craftsmanship of the watch made it a collector's item.
B2 adjective /ɪnˈvaɪrənmənt ˈfrɛndli/

environment-friendly

Meaning
Designed or produced in a way that causes minimal harm to the environment, often using sustainable materials and processes that reduce ecological impact.
Example
Environment-friendly products are designed to reduce ecological damage.
B2 verb /ɪnˈlɑːrdʒ/

enlarge

Meaning
to make something bigger or increase in size
Example
They decided to enlarge their house.
A2 verb /ɪkˈspres/

express

Meaning
to show or make known a feeling, thought, or opinion
Example
She expressed her gratitude for the help she received.
B1 adverb /ɪkˈstriːm.li/

Extremely

Meaning
to a very high degree; exceptionally
Example
The weather today is extremely hot and humid.
B2 adverb /ɪˈfɪʃəntli/

efficiently

Meaning
in a way that achieves maximum productivity with minimum wasted effort or expense
Example
She managed to complete the task efficiently within the deadline.
C2 adjective /ɪˈkwɪvəkəl/

equivocal

Meaning
Open to more than one interpretation; ambiguous.
Example
His equivocal answer confused everyone.
C2 verb /ˈɛdɪfaɪ/

edify

Meaning
To instruct or improve someone morally or intellectually.
Example
Good books can both entertain and edify the reader.
C2 verb /ɪˈmɛnd/

emend

Meaning
to correct or revise a text, especially for errors
Example
The editor emended the manuscript before publication.
C2 noun /ɪˈklɛktɪˌsɪzəm/

eclecticism

Meaning
A method or practice of deriving ideas, style, or taste from a broad and diverse range of sources.
Example
The architect’s work shows eclecticism by blending modern and traditional elements.
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.
A2 adjective /ɪmˈbærəst/

embarrassed

Meaning
feeling awkward, ashamed, or self-conscious about something
Example
He felt embarrassed when he forgot her name.
C1 noun /ɪnˈkrəʊtʃmənt/

encroachment

Meaning
the act of gradually intruding or taking over someone’s rights, land, or space
Example
The villagers protested against the encroachment on their farmland.
B1 noun /ɪnˈdʒɔɪmənt/

enjoyment

Meaning
the state or process of taking pleasure or satisfaction in something
Example
She felt great enjoyment while reading her favorite book.
B1 verb ɪkˈspændɪŋ

expanding

Meaning
Becoming larger or more extensive; increasing in size, number, or importance.
Example
Expanding education opportunities helps reduce inequality.
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.
B2 adverb /ɪˈsɛnʃəli/

essentially

Meaning
Used to emphasize the basic or fundamental nature of something.
Example
The two plans are essentially the same.
C2 verb /ˈɛksplɪkeɪt/

explicate

Meaning
to make an idea or principle clear by explaining it in detail
Example
The professor tried to explicate the theory of relativity for his students.
A1 noun /ɪɡˈzɑːm.pəl/

example

Meaning
a thing or person regarded as a model to be followed or avoided
Example
He is a good example of a hardworking student.
C2 noun /ˌɛmjʊˈleɪ.ʃən/

emulation

Meaning
Reproducing something or following someone to achieve success.
Example
The software allows the emulation of old video games on modern devices.
B2 verb ˈel.ɪ.veɪt

elevate

Meaning
To lift to a higher position; to raise to a more important or impressive level.
Example
Good leadership can elevate team performance.
C2 noun /ˈɛnsaɪn/

ensign

Meaning
A flag or standard, especially a military or naval one indicating nationality; also a junior officer in the navy or coast guard.
Example
The ship raised its national ensign before leaving the harbor.
C1 adjective /ˌɛnɪɡˈmætɪk/

enigmatic

Meaning
mysterious and difficult to interpret or understand
Example
He gave me an enigmatic smile.
B2 noun ɪˈmɪʃ.ənz

emissions

Meaning
The production and discharge of something, especially gas, heat, light, or radiation.
Example
Carbon emissions are rising globally.
C1 verb /ɪkˈskriːt/

excrete

Meaning
to eliminate waste matter from the body
Example
Humans excrete carbon dioxide through breathing.
B2 verb /ɪˈrɛkt/

erect

Meaning
to build or construct something; to set upright
Example
They erected a statue in the town square.
B2 noun /iːz/

Ease

Meaning
absence of difficulty or effort; comfort and relaxation
Example
After years of practice, she played the piano with great ease.
B1 noun /ˈɛdɪtər/

editor

Meaning
a person responsible for the final content of a newspaper, magazine, or book
Example
The editor approved the article before publication.
B2 adjective ˌiːvəˈluːʃənəri

evolutionary

Meaning
Relating to or denoting the gradual development of something, especially from a simple to a more complex form.
Example
The evolutionary changes in species are fascinating.
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.
B2 adverb /ɪkˈstɜrnəli/

externally

Meaning
in a way that relates to the outer surface or outside appearance
Example
The building appeared externally modern, but inside it was quite old-fashioned.
B2 noun /ˌek.spɪˈdɪʃ.ən/

Expedition

Meaning
a journey undertaken by a group of people with a particular purpose; organized trip for exploration
Example
The mountain climbing expedition required months of careful planning and preparation.
B1 adjective /ɪnˌvaɪrənˈmɛntl/

environmental

Meaning
relating to the natural world and the impact of human activity on its condition
Example
The company adopted new policies to reduce environmental damage.
A2 verb /ɪkˈspekt/

expect

Meaning
to think something will happen; to anticipate
Example
I expect the meeting to start at 9 AM.
B1 noun /ˈɛlɪmənt/

element

Meaning
A basic or essential part of something; a simple substance that cannot be broken down further.
Example
Trust is a key element of any strong relationship.
B2 verb ɪˈrɛktɪŋ

erecting

Meaning
To build; construct; set up in a vertical position.
Example
The workers were erecting a new building downtown.
C2 noun /ˌɛləˈkjuːʃn/

elocution

Meaning
The skill of clear and expressive speech, especially in public speaking.
Example
She improved her elocution through constant practice.
C1 adjective /ɪˈrɒtɪk/

erotic

Meaning
relating to or tending to arouse sexual desire or excitement
Example
The novel contained several erotic scenes.
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.
B2 verb /ɪnˈɡeɪdʒɪŋ/

engaging

Meaning
Participating or becoming involved in; occupying or attracting someone's interest or attention.
Example
Engaging youth in education is essential.
C1 adjective /ɪˈkwɛstriən/

equestrian

Meaning
Relating to horse riding or horseback riders.
Example
She won several equestrian competitions.
B1 adverb /ɪnˈtaɪərli/

Entirely

Meaning
completely; wholly; fully
Example
The building was entirely destroyed in the fire.
C1 verb /ɪnˈsjuː/

ensue

Meaning
to happen as a result or consequence
Example
After the argument, silence ensued.
C1 verb ɪɡˈzæsərbeɪt

exacerbate

Meaning
To make a problem, bad situation, or negative feeling worse.
Example
Climate change exacerbates flooding issues.
B1 noun /ɪˈdɪʃən/

edition

Meaning
a particular version or printing of a book, newspaper, or other publication
Example
The latest edition of the magazine sold out quickly.
B2 adjective ɪkˈsplɪsɪt

explicit

Meaning
Stated clearly and in detail, leaving no room for confusion or doubt.
Example
The instructions were explicit, leaving no room for confusion.
C1 noun /ˈɛdɪfɪs/

edifice

Meaning
A large, impressive building or structure.
Example
The museum is an impressive edifice in the city center.
B1 adjective /ɪkˈstrɔːr.dɪ.nər.i/

Extraordinary

Meaning
very unusual; remarkable; going beyond what is normal or expected
Example
The magician's performance was extraordinary and left everyone amazed.
B2 noun /ɪkˈskluːʒən/

exclusion

Meaning
The process or state of being left out or denied access.
Example
The policy led to the exclusion of certain groups.