efficiency
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B2 noun ɪˈfɪʃ.ən.si

efficiency

Meaning
The state or quality of being efficient; achieving maximum productivity with minimum wasted effort or expense.
Example
Efficiency in communication is crucial for businesses.
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 /ɪˈkweɪt/

equate

Meaning
To consider as equal or equivalent.
Example
Many people equate wealth with success.
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 noun /ɪkˈstriː.mɪst/

Extremist

Meaning
a person who holds extreme political or religious views
Example
The government is taking measures to prevent extremist activities.
C2 adjective ˈen.də.krɪn

endocrine

Meaning
Relating to or denoting glands that secrete hormones directly into the blood.
Example
The endocrine system regulates metabolism and growth.
B1 noun ɪˈkɒnəmiːz

economies

Meaning
The wealth and resources of a country or region.
Example
Emerging economies have been growing rapidly over the past decade.
C2 verb /ˈɛdɪfaɪ/

edify

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

ecumenical

Meaning
Promoting unity among different Christian churches or religions.
Example
The leaders gathered for an ecumenical conference to encourage dialogue.
B1 adjective /ˈel.ɪ.ɡənt/

Elegant

Meaning
graceful and stylish; refined; sophisticated
Example
She wore an elegant dress to the party.
C1 verb /ɪɡˈzɒnəreɪt/

exonerate

Meaning
To clear someone from blame or accusation.
Example
The court exonerated her from all charges.
B1 adjective /ɪnˈkɝr.ɪ.dʒɪŋ/

Encouraging

Meaning
giving support or confidence; inspiring; motivating
Example
The teacher's encouraging words motivated the students.
C1 adverb ˌekspəˈnenʃəli

exponentially

Meaning
At a rapidly increasing rate; growing or expanding very quickly and intensely.
Example
Internet adoption is growing exponentially worldwide.
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.
B2 noun /ɪkˈskɜː.ʃən/

Excursion

Meaning
a short journey or trip, especially one engaged in as a leisure activity
Example
The school organized an excursion to the science museum for all students.
C1 adjective /ɪˈstreɪndʒd/

estranged

Meaning
no longer close or affectionate with someone; alienated
Example
She felt estranged from her family after the long dispute.
C2 adjective /ˌiːvənˈhændɪd/

evenhanded

Meaning
Fair and impartial; showing no bias or favoritism.
Example
The judge was praised for her evenhanded approach to the case.
C2 noun /ˈɛksplətɪv/

expletive

Meaning
a word or phrase used as an exclamation, often offensive or profane
Example
He shouted an expletive when he dropped the hammer on his foot.
C2 noun /ɪkˈskrɛsəns/

excrescence

Meaning
An abnormal outgrowth or lump, often considered unattractive.
Example
The building was considered an excrescence on the landscape.
B2 noun /ˈaɪ.bɔːl/

Eyeball

Meaning
the round part of the eye within the eyelids and socket
Example
The doctor examined his eyeball carefully.
C2 noun /juːˈdʒen.ɪks/

eugenics

Meaning
the study or practice of improving the genetic quality of the human population
Example
Eugenics has been criticized for its unethical applications in history.
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 verb /ɪˈstæblɪʃ/

establish

Meaning
To set up, create, or bring into existence something on a firm basis.
Example
The company plans to establish a new office in Dhaka.
B2 adjective /ɪkˌsperɪˈmentl/

experimental

Meaning
based on untested ideas or techniques; relating to experiments or testing
Example
The scientists developed an experimental drug to treat cancer.
C2 verb /ɪnˈvaɪərən/

environ

Meaning
to surround or enclose; to encircle
Example
Mountains environ the small valley.
C2 verb /ɪkˈspɒstjʊleɪt/

expostulate

Meaning
to express strong disapproval or disagreement
Example
She expostulated with her friend about the risky decision.
C2 adjective ˈɛr.jʊ.daɪt

erudite

Meaning
Having or showing great knowledge or learning; scholarly and intellectual.
Example
The professor's erudite lecture fascinated the students.
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.
A2 adjective /ɪˈlɛktrɪk/

electric

Meaning
Relating to or operated by electricity.
Example
The room was lit by an electric lamp.
C2 noun /ɪˈfɛmɪnəsi/

effeminacy

Meaning
The quality of showing traits traditionally associated with women, such as delicacy or softness.
Example
In ancient times, effeminacy was often criticized as a sign of weakness.
A2 verb /ˈentər/

enter

Meaning
to go into; to come or go inside
Example
Please knock before you enter the room.
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.
B2 adjective /ɪkˈstɪr.i.ər/

Exterior

Meaning
relating to the outside part or surface of something; outer
Example
The exterior of the building was painted in bright colors.
A2 adjective /ˌjʊərəˈpiːən/

european

Meaning
Relating to Europe or its people.
Example
She studied European history at university.
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.
C2 noun /ˈɛpəʊd/

epode

Meaning
A form of lyric poem written in couplets, often following a strophe and antistrophe in classical Greek poetry.
Example
The poet concluded his ode with a striking epode.
B1 noun /ɪkˈstent/

Extent

Meaning
the area covered by something; the degree to which something has spread
Example
The extent of the damage caused by the flood was enormous.
C1 verb /ɪkˈstoʊl/

extol

Meaning
to praise enthusiastically and highly
Example
The teacher extolled the student's dedication and hard work.
B1 verb /ɪkˈstend/

extend

Meaning
to make longer or larger; to stretch out; to offer or give
Example
The company decided to extend the deadline for the project.
B1 noun /ɪnˈkʌrɪdʒmənt/

encouragement

Meaning
the action of giving someone support, confidence, or hope
Example
Her encouragement helped me finish the project.
B2 noun /ˈem.ər.əld/

Emerald

Meaning
a bright green precious stone used in jewelry
Example
The emerald necklace sparkled in the sunlight.
C2 noun /ˈɛkwɪpɔɪz/

equipoise

Meaning
A state of balance or equilibrium.
Example
Her calmness created an equipoise in the heated debate.
C2 noun /ˈɛmbəˌlɪzəm/

embolism

Meaning
the sudden blockage of a blood vessel by a clot or other foreign matter
Example
The patient suffered a fatal pulmonary embolism.
C2 noun /ɪˈlɛk.trə.taɪp/

electrotype

Meaning
A duplicate printing plate made by electroplating a mold of the original.
Example
The printer used an electrotype to produce multiple copies of the page.
C1 verb /ɪnˈdʒen.dər/

engender

Meaning
To cause or give rise to a feeling, situation, or condition.
Example
The speech engendered hope among the people.
B1 adjective /ˈel.dər.li/

Elderly

Meaning
aged; advanced in years; old
Example
The elderly man walked slowly with his cane.
B1 verb /ɪˈneɪbəl/

enable

Meaning
to make something possible; to give power or ability
Example
This software enables users to edit videos easily.
B2 verb /ɪkˈsɛl/

excel

Meaning
to be exceptionally good at or proficient in an activity or subject
Example
She always tries to excel in her studies.
C2 adverb /ˌɛkspəˈdɪʃəsli/

expeditiously

Meaning
in a quick and efficient manner
Example
The application was processed expeditiously.
B1 noun /ɪnˈɡeɪdʒ.mənt/

engagement

Meaning
The action of engaging or being engaged; participation or involvement.
Example
Social media engagement helps brands connect with their audience.
A2 verb /ˈeksərsaɪz/

exercise

Meaning
to do physical activity; to use or practice
Example
I exercise at the gym three times a week.
B1 adjective /ˈiːvəl/

evil

Meaning
Profoundly immoral and wicked.
Example
They believed the villain was the embodiment of evil.
A1 adverb /ˈevər/

Ever

Meaning
at any time; always; in any way
Example
Have you ever been to Paris?
A2 noun /ɜːθ/

Earth

Meaning
the planet on which we live; the ground or soil
Example
The astronauts could see Earth from their spacecraft in orbit.
A2 verb /ɪnˈkɜːrɪdʒ/

encourage

Meaning
to give support, confidence, or hope; to motivate
Example
Teachers should encourage students to ask questions.
C1 adjective /ɪkˈstɛnjueɪtɪŋ/

extenuating

Meaning
serving to make a fault or an offense seem less serious
Example
She asked for leniency due to extenuating circumstances.
A2 adverb /ˈiːzɪli/

Easily

Meaning
without difficulty; in a simple or effortless manner
Example
She easily solved the math problem in minutes.
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.
B2 noun /ɪˈsteɪt/

estate

Meaning
A large area of land, property, or possessions owned by someone, often including a big house.
Example
The family owned a large estate in the countryside.
C2 adjective /ɪˈlɪʒən/

elysian

Meaning
Relating to or characteristic of paradise; delightful and heavenly.
Example
They spent an elysian week on the quiet island.
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 noun /ˈɛmbləm/

emblem

Meaning
A symbolic object, design, or figure representing an idea, group, or identity.
Example
The dove is an emblem of peace.
C2 adjective /ɛkˈstrɪnzɪk/

extrinsic

Meaning
Not part of the essential nature of someone or something; coming from outside.
Example
His motivation was largely extrinsic, driven by rewards and recognition.
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 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 verb ɪˈluː.sɪ.deɪt

elucidate

Meaning
make (something) clear; explain.
Example
The professor elucidated the theory with simple examples.
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.
C2 verb /ɪnˈtwaɪn/

entwine

Meaning
to twist or wind together; to become closely connected or involved
Example
The vines entwine around the old fence.
C2 verb /ɪˈfjuːz/

effuse

Meaning
To pour out or express feelings freely and openly.
Example
She effused gratitude for the help she received.
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.
A2 noun /ɪkˈskjuːs/

Excuse

Meaning
a reason or explanation put forward to defend or justify a fault or offense
Example
Being tired is not a valid excuse for not completing your homework.
C2 adjective /ˌɛkstrəˌdʒuːˈdɪʃəl/

extrajudicial

Meaning
done outside the authority of the legal system or judicial process
Example
The activists condemned the extrajudicial killings.
B1 verb /ɪkˈsplɔːr/

explore

Meaning
to travel through or study something in order to learn more about it
Example
They decided to explore the forest together.
C2 noun /juːˌtrɑː.fɪˈkeɪ.ʃən/

eutrophication

Meaning
Excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen.
Example
Excess fertilizers lead to eutrophication in lakes.
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.
B2 noun /ɪmˈpaʊə.mənt/

empowerment

Meaning
Authority or power given to someone to do something.
Example
Empowerment initiatives enhance confidence.
B1 verb ɪkˈspændɪŋ

expanding

Meaning
Becoming larger or more extensive; increasing in size, number, or importance.
Example
Expanding education opportunities helps reduce inequality.
C2 adjective /ˈɛnərˌveɪtɪd/

enervated

Meaning
Lacking energy, vitality, or strength; weakened or exhausted.
Example
After the long meeting, she felt completely enervated.
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 adjective /ˌɛvərˈlæstɪŋ/

everlasting

Meaning
Lasting forever or for an indefinitely long time.
Example
The poet wrote about his everlasting love for nature.
B2 adjective /ˌiːkəˈnɒmɪkl/

economical

Meaning
Careful in the use of resources; providing good value or efficiency.
Example
Driving a hybrid car is economical in the long run.
B2 noun /ɪnˌsaɪkləˈpiːdiə/

encyclopedia

Meaning
a book or set of books containing information on many subjects, usually arranged alphabetically
Example
She used an encyclopedia to complete her school project.
C1 adjective /ɪˈvɒkətɪv/

evocative

Meaning
bringing strong images, memories, or feelings to mind
Example
The music was evocative of her childhood memories.
B2 verb /ɪmˈbɒdi/

embody

Meaning
To give tangible or visible form to an idea, quality, or feeling.
Example
She embodies the spirit of generosity.
B2 adjective ɪkˈstɪŋkt

extinct

Meaning
No longer in existence; having died out completely.
Example
Some species are becoming extinct due to overfishing.
C1 adjective ɪkˈskwɪzɪt

exquisite

Meaning
Extremely beautiful and delicate.
Example
The exquisite craftsmanship of the watch made it a collector's item.
C1 adjective /ɪkˈsplɔɪtətɪv/

exploitative

Meaning
making use of a situation or people unfairly and unethically for one's own advantage
Example
The workers protested against the exploitative practices of the factory.
B2 verb /ɪnˈlaɪtən/

enlighten

Meaning
to give someone greater knowledge or understanding about a subject or situation
Example
The teacher tried to enlighten the students about ancient history.
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.
C2 verb /ɪˈvɜːrt/

evert

Meaning
To turn inside out or outward.
Example
The surgeon had to evert the eyelid during the procedure.
C1 adjective /ɪnˈɡreɪnd/

engrained

Meaning
Firmly fixed or established; difficult to change.
Example
Cultural practices are often deeply engrained in the fabric of society.
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.
A2 noun /ɪˈkɒn.ə.mi/

economy

Meaning
The wealth and resources of a country or region.
Example
A stable economy is essential for national growth.
B1 noun /ˈen.trəns/

Entrance

Meaning
an opening that allows access to a place; the action of entering
Example
The main entrance to the building was decorated with beautiful flowers.
C1 adjective /ɛsˈθɛtɪk/

esthetic

Meaning
Concerned with beauty or the appreciation of beauty.
Example
The building’s esthetic design attracted many visitors.
C1 exclamation /juˈriːkə/

eureka

Meaning
An exclamation used to express a sudden discovery or realization.
Example
When the solution finally came to him, he shouted, 'Eureka!'
C2 noun /ɪˈpɪsəl/

epistle

Meaning
A letter, especially a formal or didactic one; often used for letters in the New Testament.
Example
He wrote a long epistle to his friend about his travels.
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.
C2 noun ˈɛn.ɡræm

Engram

Meaning
Physical signs or patterns in the brain for memory storage and retrieval
Example
Scientists study engrams to understand how memories are stored.
B2 verb /ɪɡˈzɜrt/

exert

Meaning
to apply or bring to bear; to use physical or mental effort
Example
He exerted all his strength to lift the heavy box.
B1 adjective /ɪnˈtaɪər/

Entire

Meaning
complete; whole; not divided or in parts
Example
She read the entire book in one sitting.
C1 verb /ɪnˈθrɔːl/

enthrall

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

expound

Meaning
to present and explain in detail
Example
The professor expounded the theory in simple terms.
C2 adjective /ɪkˈstɛnsəbl/

extensible

Meaning
able to be extended; capable of expansion.
Example
The software is designed to be extensible with new features.
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.
B1 noun ˈem.fə.sɪs

emphasis

Meaning
Special importance, value, or prominence given to something; stress laid on a particular point or aspect.
Example
The speaker placed emphasis on sustainable development.
A2 noun ɪˈmɜː.dʒən.si

emergency

Meaning
A sudden situation that is dangerous or serious and needs immediate attention or action.
Example
A financial emergency can arise at any time.
B2 verb /ɪˈreɪs/

erase

Meaning
to remove completely; to delete or wipe out
Example
Use an eraser to erase the pencil marks.
B2 verb /ɪnˈkʌmpəs/

encompass

Meaning
To include comprehensively; to surround or encircle.
Example
The project will encompass all aspects of rural development.
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 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 ˈɛf.lu.ənt

effluent

Meaning
Liquid waste or sewage discharged into a river or the sea.
Example
Factory effluent contaminates nearby rivers and lakes.
C2 verb /ɪkˈstruːd/

extrude

Meaning
to force something out through a small opening; to shape by pushing material through a mold
Example
The factory extrudes plastic pipes using modern machines.
B1 adjective /ɪˈlɛktrɪkəl/

electrical

Meaning
related to electricity or the use of electrical power
Example
The electrical system in the house needs repair.
C1 noun /ˈɜːrθənˌwɛr/

earthenware

Meaning
pottery made of clay and hardened by heat
Example
The shop displayed beautiful earthenware pots and bowls.
C2 verb /ɛksˈproʊprieɪt/

expropriate

Meaning
To take property from its owner, especially by authority or for public use.
Example
The government decided to expropriate the land for a new highway.
A1 noun/adjective /ˈɪŋɡlɪʃ/

english

Meaning
The language of England, widely spoken around the world; relating to England or its people.
Example
She is learning English to study abroad.
C1 noun /ɪkˈskriːʃən/

excretion

Meaning
the process of eliminating waste matter from the body
Example
Excretion is vital for maintaining a healthy body.
B2 adjective /ɪˈkwɪv.ə.lənt/

Equivalent

Meaning
equal in value, amount, function, or meaning; having the same effect or result
Example
This amount is equivalent to ten dollars.
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.