extensible
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C2 adjective /ɪkˈstɛnsəbl/

extensible

Meaning
able to be extended; capable of expansion.
Example
The software is designed to be extensible with new features.
C2 adjective /ɪkˈskɜːsɪv/

excursive

Meaning
Tending to digress or wander; moving away from the main subject.
Example
His excursive lecture left the students confused about the main topic.
C2 noun /ɪɡˈzækʃən/

exaction

Meaning
the act of demanding or obtaining something, especially unfairly
Example
The peasants suffered under the king's heavy exactions.
C2 noun /ɪˈluːʒən/

elusion

Meaning
The act of escaping or avoiding something, especially by cleverness or trickery.
Example
His constant elusion of responsibility frustrated his colleagues.
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 /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.
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.
C2 noun /ɪˌkliːziˈæstɪk/

ecclesiastic

Meaning
A member of the clergy or church official.
Example
The council was attended by several high-ranking ecclesiastics.
C2 noun /ˌɛfləˈrɛsəns/

efflorescence

Meaning
the process of flowering or reaching an optimal stage of development
Example
The garden was at the peak of its efflorescence in spring.
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.
C2 verb /ɛnˈdʒɔɪn/

enjoin

Meaning
to instruct or urge someone to do something; to prohibit legally
Example
The judge enjoined the company from continuing its activities.
C2 verb /ɪˈdjuːs/

educe

Meaning
To draw out or bring forth something latent or hidden.
Example
The teacher tried to educe a response from the shy student.
C2 adjective /ˌen.zɪˈmæt.ɪk/

enzymatic

Meaning
Relating to or involving enzymes, which are proteins that catalyze biochemical reactions in living organisms.
Example
Enzymatic reactions regulate metabolism in the human body.
C2 adjective /ɪˈfjuːsɪv/

effusive

Meaning
Expressing feelings of gratitude, pleasure, or approval in an unrestrained or heartfelt manner.
Example
She gave him an effusive welcome after his long journey.
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 verb /ɪkˈstɛnjueɪt/

extenuate

Meaning
to make an offense, fault, or situation seem less serious by providing an excuse or explanation
Example
The lawyer tried to extenuate his client's actions by highlighting his difficult childhood.
C2 noun /ˈiːɡlət/

eaglet

Meaning
A young eagle.
Example
The eaglet waited in the nest for its mother to return.
C2 adjective /ɪˈkwɪvəkəl/

equivocal

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

epaulette

Meaning
A variant spelling of epaulet, also meaning a shoulder ornament, especially on military uniforms.
Example
The officer’s epaulette shone brightly under the sunlight.
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.
C2 verb /ˈɛdɪfaɪ/

edify

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

exhilarate

Meaning
To make someone feel very happy, animated, or excited.
Example
The mountain view exhilarated the travelers.
C2 noun /ˈɛpənɪm/

eponym

Meaning
A person after whom a discovery, invention, place, or other thing is named.
Example
Sandwich is an eponym named after the Earl of Sandwich.
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 /ɪkˈstɛmpəraɪz/

extemporize

Meaning
To speak or perform without preparation; improvise.
Example
The actor had to extemporize when he forgot his lines.
C2 verb /ɛksˈhjuːm/

exhume

Meaning
to dig out something buried, especially a body from the ground
Example
The archaeologists decided to exhume the ancient remains.
C2 adjective /ɪkˈspɒzɪtəri/

expository

Meaning
intended to explain or describe something
Example
The teacher gave an expository lecture on the topic.
C2 verb /ɪˈvɪns/

evince

Meaning
to show or demonstrate clearly
Example
She evinced her interest in the project through active participation.
C2 noun /ˈɛksɪdʒənsi/

exigency

Meaning
an urgent need or demand requiring immediate attention
Example
In times of war, the exigency of the situation requires quick decisions.
C2 noun /ˌɛpɪˈdɜːrmɪs/

epidermis

Meaning
the outer layer of cells covering the body of an organism, especially the skin
Example
The epidermis protects the body from harmful bacteria.
C2 noun /ɪkˌspɒstjʊˈleɪʃən/

expostulation

Meaning
the act of expressing protest or disagreement
Example
His expostulation against the unfair rules was ignored.
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 verb /ɪˈmɛnd/

emend

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

entreat

Meaning
To ask earnestly or beg someone to do something.
Example
She entreated him to stay a little longer.
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.
C2 adjective /ˌɛkjʊˈmɛnɪkəl/

ecumenical

Meaning
Promoting unity among different Christian churches or religions.
Example
The leaders gathered for an ecumenical conference to encourage dialogue.
C2 verb /ɪnˈtræp/

entrap

Meaning
To catch or trick someone into a difficult situation.
Example
The police tried to entrap the criminal with false evidence.
C2 verb /ɪkˈspeɪʃiˌeɪt/

expatiate

Meaning
to speak or write at length or in detail
Example
The professor expatiated on the importance of critical thinking.
C2 noun /ɪˈfjuːʒən/

effusion

Meaning
An unrestrained outpouring of words, feelings, or emotions.
Example
His letter was an effusion of love and longing.
C2 verb /ɪˈnæmər/

enamor

Meaning
to be filled with love or admiration for
Example
She was enamored with the beautiful scenery.
C2 verb /ɪˈfɛktʃueɪt/

effectuate

Meaning
to put into force or cause to happen; to bring about
Example
The manager effectuated the changes to improve efficiency.
C2 noun /ɪˌlɛkˈtrɑː.lə.sɪs/

electrolysis

Meaning
A chemical decomposition produced by passing an electric current through a liquid or solution.
Example
Electrolysis is used to separate hydrogen from water.
C2 verb /ɪˈvɜːrt/

evert

Meaning
To turn inside out or outward.
Example
The surgeon had to evert the eyelid during the procedure.
C2 noun /ˌɛləˈkjuːʃn/

elocution

Meaning
The skill of clear and expressive speech, especially in public speaking.
Example
She improved her elocution through constant practice.
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.
C2 noun /ɪɡˈzɛmplɑːr/

exemplar

Meaning
A model or pattern to be copied or imitated.
Example
She is an exemplar of kindness and generosity.
C2 adjective /juːˈdʒɛnɪk/

eugenic

Meaning
Relating to or aiming at improving the genetic quality of a population.
Example
In the early 20th century, some scientists supported eugenic policies.
C2 verb /ɪnˈskɒns/

ensconce

Meaning
to settle comfortably or securely in a place; to hide or shelter firmly
Example
She ensconced herself in a cozy armchair by the fireplace.
C2 verb /ˈɛnərˌveɪt/

enervate

Meaning
To weaken or drain someone of strength or vitality.
Example
The long hours of work enervated him.
C2 noun /ɪnˈtriːti/

entreaty

Meaning
An earnest or humble request or plea.
Example
She made an entreaty for peace during the heated argument.
C2 noun /ˈɛlɪdʒi/

elegy

Meaning
A poem or song expressing sorrow, especially for someone who has died.
Example
The poet wrote an elegy for his late friend.
C2 noun /eɪˈklɑː/

eclat

Meaning
Brilliant success, acclaim, or great public approval.
Example
The artist's debut performance was met with great éclat.
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.
C2 verb /ɛnˈfiːbəl/

enfeeble

Meaning
To make weak or feeble; to deprive of strength.
Example
The long illness enfeebled the old man.
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.
C2 noun /ɪˈlɪziəm/

elysium

Meaning
A place or state of perfect happiness; in Greek mythology, the afterlife paradise.
Example
For her, the garden was a personal elysium.
C2 noun /ˌɛksaɪˈteɪʃən/

excitation

Meaning
a state of great excitement or the process of stimulating activity
Example
The news created great excitation among the fans.
C2 adjective /ˈɛksɪdʒənt/

exigent

Meaning
demanding immediate action or attention; urgent
Example
The patient’s exigent condition required immediate surgery.
C2 adjective /ˌɛnkəˈmiːæstɪk/

encomiastic

Meaning
Expressing praise; laudatory.
Example
The book was filled with encomiastic remarks about the author.
C2 verb /ɪˈfeɪsɪŋ/

effacing

Meaning
erasing or making oneself inconspicuous; to remove or diminish in significance
Example
She kept effacing herself during the meeting so that others could shine.
C2 verb /ɛnˈfrænˌtʃaɪz/

enfranchise

Meaning
To grant the right to vote or other rights of citizenship.
Example
The new law enfranchised thousands of people.
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.
C2 noun /ˈɒnwiː/ or /ˈɑːnwiː/

ennui

Meaning
A feeling of boredom, listlessness, or dissatisfaction arising from lack of excitement.
Example
After weeks of doing nothing, he sank into a deep sense of ennui.
C2 verb /ɪmˈbɪtər/

embitter

Meaning
To make someone resentful or angry; to cause bitterness.
Example
The unfair treatment embittered the employees.
C2 noun /ˈel.ɪ.fənt ˈæp.əl/

Elephant Apple

Meaning
a tropical fruit with a hard shell and acidic flesh
Example
Elephant apple is used to make delicious jams and pickles.
C2 verb /ɪˈfeɪs/

efface

Meaning
To erase or wipe out something; to make oneself inconspicuous.
Example
Time had effaced the letters on the old gravestone.
C2 adjective /ˌɛpɪkjʊˈriːən/

epicurean

Meaning
relating to the enjoyment of fine food, drink, and luxury
Example
The chef prepared an epicurean feast for the guests.
C2 noun /ɪˌpɪstəˈmɒlədʒɪst/

epistemologist

Meaning
A scholar or expert who studies the nature, sources, and limits of knowledge.
Example
The epistemologist debated how humans can truly know anything with certainty.
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 verb /ɪnˈkʌmbər/

encumber

Meaning
to burden or weigh down something, making it difficult to move or progress
Example
She was encumbered by the heavy luggage during her journey.
C2 verb /ˈekspərˌɡeɪt/

expurgate

Meaning
To remove offensive or objectionable parts from a text or speech.
Example
The publisher decided to expurgate the novel before reprinting it.
C2 noun /ɛnˈsɪklɪkəl/

encyclical

Meaning
a formal letter sent by the Pope to Catholic churches, usually addressing important issues
Example
The Pope issued an encyclical on climate change and moral responsibility.
C2 verb /ɛmˈbɔs/

emboss

Meaning
to decorate a surface with a raised design or pattern
Example
The invitation card was embossed with golden letters.
C2 noun /ɪkˈspiːdiənsi/

expediency

Meaning
the quality of being convenient and practical despite possibly being improper or immoral
Example
He acted out of political expediency rather than principle.
C2 noun /ˌiː.kəʊ.tɒkˈsɪ.kə.lə.dʒi/

ecotoxicology

Meaning
The study of the effects of chemical pollution on the environment.
Example
Ecotoxicology studies the effects of pesticides on wildlife.
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 verb /ɛkˈskɔːrieɪt/

excoriate

Meaning
To strongly criticize someone; to denounce severely.
Example
The critic excoriated the film for its poor script.
C2 adjective /ɛmˈpaɪriəl/

empyreal

Meaning
Heavenly, divine, or relating to the highest heavens.
Example
The poet described the empyreal beauty of the stars.
C2 noun /ɪˈmɛtɪk/

emetic

Meaning
a substance that causes vomiting
Example
The doctor administered an emetic to remove the poison.
C2 adjective /ɪɡˈzɔːstɪbəl/

exhaustible

Meaning
able to be used up completely; not infinite
Example
Coal and oil are exhaustible resources.
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.
C2 adverb /ˌɛkspəˈdɪʃəsli/

expeditiously

Meaning
in a quick and efficient manner
Example
The application was processed expeditiously.
C2 adverb /ɪkˈstem.pɔːr/

Extempore

Meaning
without preparation; spontaneously; improvised
Example
The speaker delivered an impressive extempore speech at the conference.
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.
C2 adjective /ˌɛkstrəˌdʒuːˈdɪʃəl/

extrajudicial

Meaning
done outside the authority of the legal system or judicial process
Example
The activists condemned the extrajudicial killings.
C2 verb /ɪkˈspɛktəreɪt/

expectorate

Meaning
to cough up and spit out mucus from the throat or lungs
Example
The patient began to expectorate thick mucus.
C2 verb /ˈɛkskʌlpeɪt/

exculpate

Meaning
to show or declare that someone is not guilty of wrongdoing
Example
The lawyer worked hard to exculpate his client.
C2 adjective /ɪˈfɛktʃuəl/

effectual

Meaning
producing a desired or intended effect, often used in formal contexts
Example
Her effectual efforts brought peace to the community.
C2 adjective /ˈiːkwaɪn/

equine

Meaning
Relating to or resembling a horse.
Example
The veterinarian specialized in equine medicine.
C2 verb /ɪˈkwɪvəˌkeɪt/

equivocate

Meaning
To speak ambiguously or avoid giving a clear answer.
Example
The politician equivocated when asked about the scandal.
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.
C2 adjective /ˈɛksplɪkəbəl/

explicable

Meaning
able to be explained or understood
Example
His sudden anger was explicable given the stressful situation.
C2 verb /ˈjuːləˌdʒaɪz/

eulogize

Meaning
To praise highly in speech or writing, especially in honor of someone who has died.
Example
They gathered to eulogize their beloved teacher.
C2 verb /ˈɛkspieɪt/

expiate

Meaning
to make amends for guilt or wrongdoing
Example
He tried to expiate his crime by helping the poor.
C2 noun /ˌɛfəˈvɛsəns/

effervescence

Meaning
The release of gas bubbles; vivacity or high-spiritedness.
Example
Her effervescence made her the life of the party.
C2 noun /ɪˈbʊliəns/

ebullience

Meaning
the quality of being cheerful, enthusiastic, and full of energy
Example
The teacher's ebullience inspired her students.
C2 adjective /ˈɛstɪməbl/

estimable

Meaning
Worthy of great respect.
Example
Her estimable achievements inspired the whole community.
C2 verb /ˈeksɪkreɪt/

execrate

Meaning
To feel or express great loathing or hatred for something.
Example
The community execrated the corrupt politician.
C2 noun /ˈaɪ.sɔːr/

Eyesore

Meaning
something that is very ugly and unpleasant to look at
Example
The abandoned building has become an eyesore in the neighborhood.
C2 adjective /ɪˈfɛmɪnət/

effeminate

Meaning
Having traits, tastes, or habits traditionally considered feminine, often used negatively for men.
Example
The critics described him as effeminate due to his gentle manner.
C2 adjective /ˌɛsəˈtɛrɪk/

esoteric

Meaning
intended for or understood by only a small number of people with special knowledge
Example
The professor gave an esoteric lecture on ancient philosophy.
C2 adjective /ˈɛrzæts/

ersatz

Meaning
made or used as a substitute, typically an inferior one
Example
The cheap shoes were made of ersatz leather.
C2 noun /ˌɛksɪˈkreɪʃən/

execration

Meaning
An act of cursing or denouncing someone or something with hatred.
Example
The dictator’s name was spoken with execration after his fall.
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 adjective /ɪˈlɪʒən/

elysian

Meaning
Relating to or characteristic of paradise; delightful and heavenly.
Example
They spent an elysian week on the quiet island.
C2 adjective /ˌɛkspəˈdɪʃəs/

expeditious

Meaning
Done with speed and efficiency.
Example
The expeditious delivery of the package was appreciated.
C2 adjective /ˌɛf.ɪˈkeɪ.ʃəs/

efficacious

Meaning
Successful in producing a desired or intended result; effective.
Example
The vaccine proved highly efficacious in preventing infections.
C2 noun ˌɛr.jʊˈdɪʃ.ən

erudition

Meaning
The quality of having or showing great knowledge or learning; scholarship.
Example
His erudition in history impressed the entire audience.
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.
C2 verb /ɪnˈθroʊn/

enthrone

Meaning
to install someone on a throne or to give someone high status
Example
The king was enthroned in a grand ceremony.
C2 noun /juː/

Ewe

Meaning
a female sheep
Example
The ewe gave birth to twin lambs.
C2 verb /ˌɛvəˈnɛs/

evanesce

Meaning
To disappear gradually; to fade away.
Example
The mist began to evanesce as the sun rose higher.
C2 noun /ɪkˈstɛnsər/

extensor

Meaning
a muscle that serves to extend or straighten a limb or part of the body.
Example
The extensor muscles in the arm help straighten the elbow.
C2 verb ɪɡˈzɔːrt

exhort

Meaning
To strongly encourage or urge someone to do something.
Example
The teacher exhorted students to work hard for exams.
C2 verb /ɪnˈθrɔːl/

enthral

Meaning
To captivate or hold someone’s full attention.
Example
The magician’s performance enthralled the audience.
C2 noun, adjective /ɪˈklɪptɪk/

ecliptic

Meaning
The apparent path of the sun across the sky; relating to eclipses or this path.
Example
The ecliptic is the plane of Earth's orbit around the Sun.
C2 adjective /ˈɛkstənt/

extant

Meaning
Still in existence; surviving.
Example
Only a few manuscripts from the ancient library are extant.
C2 verb /ɪɡˈzʌlt/

exult

Meaning
to show or feel great joy, often as a result of success
Example
The fans exulted after their team won the championship.
C2 noun /ˈɛpəlɛt/

epaulet

Meaning
An ornamental shoulder piece on a garment, especially on the coat or jacket of a military uniform.
Example
The general’s uniform had a golden epaulet on each shoulder.