efficiency
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B2 noun ɪˈfɪʃ.ən.si

efficiency

eficiencia
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.
La eficiencia en la comunicación es crucial para los negocios.
B1 noun /ˈɛlɪmənt/

element

elemento
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.
La confianza es un elemento clave de cualquier relación fuerte.
C1 noun /ɪˈklɪps/

Eclipse

eclipse (del sol o la luna)
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.
El eclipse solar total oscureció el cielo durante varios minutos.
B2 adverb /ɪˈsɛnʃəli/

essentially

esencialmente
Meaning
Used to emphasize the basic or fundamental nature of something.
Example
The two plans are essentially the same.
Los dos planes son esencialmente lo mismo.
C1 adjective /ɛnˌsaɪkləˈpiːdɪk/

encyclopedic

enciclopédico
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.
Su conocimiento enciclopédico de la historia sorprendió a todos en la conferencia.
C1 noun /ɪˈlɛk.trəʊ.laɪts/

electrolytes

electrolitos
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.
Los electrolitos ayudan a mantener el equilibrio adecuado de líquidos en el cuerpo.
C1 noun /ɪkˈstrækʃən/

extraction

extracción
Meaning
the act of removing something, especially by pulling it out
Example
The extraction of oil from the ground requires special equipment.
La extracción de petróleo del suelo requiere equipos especiales.
A2 verb /ɪnˈkɜːrɪdʒ/

encourage

alentar
Meaning
to give support, confidence, or hope; to motivate
Example
Teachers should encourage students to ask questions.
Los maestros deben alentar a los estudiantes a hacer preguntas.
C1 noun /ɪkˌsperɪˈmɛnteɪʃən/

experimentation

experimentación
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.
La experimentación conduce a productos innovadores.
C1 adjective /ˈed.jʊ.keɪ.tɪv/

Educative

educativo; instructivo; informativo
Meaning
providing education; instructive; informative
Example
The documentary was highly educative and informative.
El documental fue muy educativo e informativo.
C1 adjective /ɪkˈskruːʃieɪtɪŋ/

excruciating

excruciante
Meaning
causing extreme physical or mental pain
Example
She was in excruciating pain after the accident.
Ella estaba en dolor insoportable después del accidente.
B1 noun /ɪˈdɪʃən/

edition

edición
Meaning
a particular version or printing of a book, newspaper, or other publication
Example
The latest edition of the magazine sold out quickly.
La última edición de la revista se vendió rápidamente.
A2 noun ɪˈvɛnts

events

eventos
Meaning
A thing that happens, especially one of importance.
Example
Several events were held across the country.
Se celebraron varios eventos en todo el país.
C1 adjective /ɪˈfɛm.ər.əl/

ephemeral

efímero
Meaning
Lasting for a very short time; temporary or transitory.
Example
The beauty of cherry blossoms is ephemeral.
La belleza de las flores de cerezo es efímera.
C1 adjective ɪˈveɪ.sɪv

evasive

evasivo, astuto, vago
Meaning
Tending to avoid commitment or self-revelation, especially by responding only indirectly.
Example
He gave an evasive answer to avoid trouble.
Él dio una respuesta evasiva para evitar problemas.
B1 verb /ɪɡˈzɪst/

exist

existir
Meaning
to have being or reality; to be present
Example
Dinosaurs existed millions of years ago.
Los dinosaurios existieron hace millones de años.
B1 noun /ɪˈfɛk.tɪv kəˌmjuː.nɪˈkeɪ.ʃən/

effective communication

comunicación efectiva
Meaning
Clear and meaningful exchange of information that achieves its intended purpose.
Example
Effective communication is key to strong relationships.
La comunicación efectiva es clave para relaciones fuertes.
C1 noun /ˌɛlɪˈveɪʃən/

elevation

elevación
Meaning
The act of raising something to a higher position or level.
Example
The hikers reached a high elevation after hours of climbing.
Los excursionistas llegaron a una alta elevación después de horas de escalada.
C2 verb ɪɡˈzɔːrt

exhort

exhortar
Meaning
To strongly encourage or urge someone to do something.
Example
The teacher exhorted students to work hard for exams.
El profesor exhortó a los estudiantes a trabajar duro para los exámenes.
B2 noun /ˌɛvəˈluːʃən/

evolution

evolución
Meaning
the gradual development of something, especially from a simple to a more complex form
Example
The theory of evolution explains how species change over time.
La teoría de la evolución explica cómo las especies cambian con el tiempo.
B2 noun /ˌek.spekˈteɪ.ʃən/

Expectation

expectativa; esperanza;
Meaning
a strong belief that something will happen or be the case; anticipation
Example
The new teacher exceeded everyone's expectations with her innovative teaching methods.
El nuevo maestro superó las expectativas de todos con sus métodos de enseñanza innovadores.
C1 verb /ɪkˈstoʊl/

extol

alabar
Meaning
to praise enthusiastically and highly
Example
The teacher extolled the student's dedication and hard work.
El maestro alabó la dedicación y el trabajo duro del estudiante.
C1 noun /ɪˈvændʒəlɪst/

evangelist

evangelista
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.
El evangelista viajó por todo el país difundiendo su mensaje.
A2 noun /ɪmˈplɔɪər/

employer

empleador
Meaning
A person or organization that hires and pays people to work.
Example
The employer promised better benefits to attract skilled workers.
El empleador prometió mejores beneficios para atraer a trabajadores calificados.
B2 noun /ˌep.ɪˈdem.ɪk/

Epidemic

epidemia
Meaning
a widespread occurrence of an infectious disease in a community
Example
The flu epidemic affected thousands of people across the country.
La epidemia de gripe afectó a miles de personas en todo el país.
C2 noun /ɪnˈtriːti/

entreaty

súplica
Meaning
An earnest or humble request or plea.
Example
She made an entreaty for peace during the heated argument.
Ella hizo una súplica por la paz durante la acalorada discusión.
B1 noun /ɪkˈsep.ʃən/

Exception

excepción
Meaning
a person or thing that is excluded from a general statement or does not follow a rule
Example
Most students passed the exam, with the exception of a few who were absent.
La mayoría de los estudiantes aprobó el examen, con la excepción de algunos que estaban ausentes.
B2 verb /ɪˈrʌpt/

erupt

erupcionar
Meaning
to burst forth suddenly and violently
Example
The volcano erupted after centuries of dormancy.
El volcán erupcionó después de siglos de inactividad.
C2 adjective /ˌɛkspəˈdɪʃəs/

expeditious

rápido
Meaning
Done with speed and efficiency.
Example
The expeditious delivery of the package was appreciated.
La entrega rápida del paquete fue apreciada.
C1 noun /ˈek.stə.si/

Ecstasy

éxtasis
Meaning
an overwhelming feeling of great happiness or joyful excitement
Example
She was in complete ecstasy when she heard the good news.
Ella estaba en completa éxtasis cuando escuchó las buenas noticias.
C1 noun /ˈaɪ.wɪt.nəs/

Eyewitness

testigo ocular
Meaning
a person who has seen something happen and can give evidence about it
Example
The police interviewed several eyewitnesses to the accident.
La policía entrevistó a varios testigos oculares del accidente.
B2 adjective /ɪˈtɜː.nəl/

Eternal

eterno; sin fin; inmortal; perpetuo
Meaning
lasting or existing forever; without end or beginning; everlasting
Example
Their love seemed eternal and unbreakable.
Su amor parecía eterno e inquebrantable.
B2 noun ɪˌvæljuˈeɪʃən

evaluation

evaluación
Meaning
The making of a judgment about the amount, number, or value of something; assessment.
Example
Accurate evaluation helps determine resource sustainability.
Una evaluación precisa ayuda a determinar la sostenibilidad de los recursos.
B1 noun /ɪnˈθjuː.zi.æz.əm/

Enthusiasm

entusiasmo; fervor; ardor
Meaning
intense and eager enjoyment, interest, or approval
Example
Her enthusiasm for the project inspired the entire team.
Su entusiasmo por el proyecto inspiró a todo el equipo.
A2 noun /ˈel.ɪ.fənt/

Elephant

elefante
Meaning
a very large gray mammal with long curved teeth and a long nose called a trunk
Example
The elephant is the largest land animal in the world.
El elefante es el animal terrestre más grande del mundo.
B2 noun /ˈen.ə.dʒi sɪˈkjʊə.rɪ.ti/

energy security

seguridad energética
Meaning
The reliable availability of energy sources at an affordable price for a nation or region.
Example
Energy security ensures consistent supply.
La seguridad energética asegura el suministro constante.
B2 noun /ɪˈmɜːrdʒəns/

emergence

emergencia
Meaning
the process of coming into view, existence, or prominence
Example
The emergence of new technologies has transformed communication.
La emergencia de nuevas tecnologías ha transformado la comunicación.
B2 verb /ɪnˈroʊl/

enrol

inscribirse
Meaning
To officially register or sign up for a course, program, or membership
Example
She decided to enrol in a language course to improve her skills.
Ella decidió inscribirse en un curso de idiomas para mejorar sus habilidades.
C2 verb /ˈek.stər.peɪt/

extirpate

extirpar
Meaning
to completely remove or destroy something unwanted
Example
The government launched a program to extirpate corruption from public offices.
El gobierno lanzó un programa para extirpar la corrupción de las oficinas públicas.
B2 noun /ˈɛksələns/

excellence

excelencia
Meaning
the quality of being outstanding or extremely good
Example
The school is known for its academic excellence.
La escuela es conocida por su excelencia académica.
B1 noun /ɪkˈstent/

Extent

extensión; alcance; grado
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.
La extensión del daño causado por la inundación fue enorme.
C2 noun /ˈɛdi/

eddy

remolino
Meaning
A circular movement of water, air, or smoke, counter to the main current, causing a small whirlpool or turbulence.
Example
The canoe was caught in an eddy near the rocks.
La canoa quedó atrapada en un remolino cerca de las rocas.
B2 noun /ˌiː.kəˈnɒm.ɪk ˈsɪs.təm/

economic system

sistema económico
Meaning
The organized framework for production, distribution, and consumption of goods and services in society.
Example
Capitalism, socialism, and mixed economies are types of economic systems.
El capitalismo, el socialismo y las economías mixtas son tipos de sistemas económicos.
C1 noun /ˈɛksɜːrpt/

excerpt

extracto
Meaning
A short portion taken from a text, film, or piece of music.
Example
The teacher read an excerpt from the novel.
El maestro leyó un extracto de la novela.
C1 verb /ɪnˈθrɔːl/

enthrall

cautivar
Meaning
to captivate or hold someone’s attention completely
Example
The magician’s tricks enthralled the children.
Los trucos del mago cautivaron a los niños.
C2 adjective /ˌen.zɪˈmæt.ɪk/

enzymatic

relacionado con enzimas
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.
Las reacciones enzimáticas regulan el metabolismo en el cuerpo humano.
C1 noun /ˌiː.kəˈnɒm.ɪk dɪˈspær.ɪ.ti/

Economic Disparity

disparidad económica
Meaning
The unequal distribution of income and opportunity between different groups in society.
Example
Addressing economic disparity is crucial for social stability.
Abordar la disparidad económica es crucial para la estabilidad social.
C2 verb /ɛnˈfiːbəl/

enfeeble

debilitar
Meaning
To make weak or feeble; to deprive of strength.
Example
The long illness enfeebled the old man.
La larga enfermedad debilitó al anciano.
C1 noun ɪˈpɪf.ə.ni

epiphany

revelación repentina o insight
Meaning
A moment of sudden revelation or insight.
Example
He had an epiphany about his true purpose in life.
Él tuvo una epifanía sobre su verdadero propósito en la vida.
C2 adjective /ˌɛnkəˈmiːæstɪk/

encomiastic

elogioso
Meaning
Expressing praise; laudatory.
Example
The book was filled with encomiastic remarks about the author.
El libro estaba lleno de comentarios elogiosos sobre el autor.
B2 noun /ɪnˌvaɪrənˈmɛntəl ˈmuːvmənt/

environmental movement

movimiento ambiental
Meaning
A social or political movement aimed at protecting the environment and promoting sustainable practices through advocacy, education, and policy changes.
Example
The environmental movement focuses on reducing pollution and protecting ecosystems.
El movimiento ambiental se enfoca en reducir la contaminación y proteger los ecosistemas.
C2 verb /ɪnˈkʌmbər/

encumber

cargar
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.
Ella estaba cargada por el equipaje pesado durante su viaje.
C1 verb /ɪkˈstɪŋ.ɡwɪʃ/

extinguish

apagar
Meaning
to put out a fire, light, or to end something
Example
The firefighters managed to extinguish the blaze within an hour.
Los bomberos lograron apagar el fuego en una hora.
A2 adjective /ˈɛvrideɪ/

everyday

cotidiano
Meaning
common or ordinary; occurring daily
Example
These shoes are perfect for everyday use.
Estos zapatos son perfectos para uso diario.
C2 noun /ˈɛksplɪkeɪtər/

explicator

explicador
Meaning
a person who explains or interprets something in detail
Example
The critic served as an explicator of the poet’s complex works.
El crítico sirvió como un explicador de los complejos trabajos del poeta.
B2 noun /ɪɡˈzæmɪnər/

examiner

examinador
Meaning
A person who tests or inspects knowledge, skills, or qualifications
Example
The examiner reviewed each student's answer sheet carefully.
El examinador revisó cuidadosamente la hoja de respuestas de cada estudiante.
C1 adverb /ˈiːstwədz/

Eastwards

hacia el este
Meaning
towards the east; in an eastern direction
Example
The river flows eastwards into the ocean.
El río fluye hacia el este hacia el océano.
A2 noun /ˈer.ər/

Error

error; equivocación
Meaning
a mistake; something done incorrectly or wrong
Example
The error in the calculation led to incorrect results.
El error en el cálculo llevó a resultados incorrectos.
C1 noun ɪnˈdaʊmənt

endowment

donación, legado
Meaning
An income or form of property given or bequeathed to someone.
Example
The university received a large endowment for research.
La universidad recibió una gran donación para la investigación.
C2 verb /ɪˈvɜːrt/

evert

voltear hacia afuera
Meaning
To turn inside out or outward.
Example
The surgeon had to evert the eyelid during the procedure.
El cirujano tuvo que voltear el párpado durante el procedimiento.
B2 adjective ˈɛvɪdənt

evident

evidente
Meaning
Clearly seen or understood; obvious.
Example
The result was evident.
El resultado fue evidente.
C2 adjective /ˈɛksplɪkəbəl/

explicable

explicable
Meaning
able to be explained or understood
Example
His sudden anger was explicable given the stressful situation.
Su enojo repentino fue explicable dada la situación estresante.
B1 adverb /ɪˈventʃuəli/

Eventually

finalmente; eventualmente
Meaning
in the end; finally; at last
Example
After years of hard work, she eventually became a doctor.
Después de años de trabajo duro, finalmente se convirtió en doctora.
A2 verb ɜrn

earn

ganar
Meaning
To obtain money, typically as payment for work or through investment; to acquire or deserve through one's efforts.
Example
Assets help you earn income even while sleeping.
Los activos te ayudan a ganar dinero incluso mientras duermes.
C2 verb /ˈeksɪkreɪt/

execrate

despreciar
Meaning
To feel or express great loathing or hatred for something.
Example
The community execrated the corrupt politician.
La comunidad despreciaba al político corrupto.
C2 noun /ɪɡˈzækʃən/

exaction

exacción
Meaning
the act of demanding or obtaining something, especially unfairly
Example
The peasants suffered under the king's heavy exactions.
Los campesinos sufrieron bajo las severas exacciones del rey.
C1 verb /ɪˈnʌnsieɪt/

enunciate

enunciar
Meaning
to pronounce words clearly; to express an idea clearly
Example
The teacher asked him to enunciate each word.
El maestro le pidió que enunciara cada palabra.
A1 noun /end/

End

fin; conclusión; término;
Meaning
the final part of something; termination or conclusion
Example
The end of the movie was unexpected and left everyone surprised.
El final de la película fue inesperado y dejó a todos sorprendidos.
C2 verb /ɪkˈskruːʃieɪt/

excruciate

excruciar
Meaning
to cause intense pain or suffering
Example
The injury excruciated him with unbearable pain.
La herida lo excruciaba con un dolor insoportable.
B2 verb ɪmˈpaʊərɪŋ

empowering

empoderar
Meaning
Giving someone the authority or power to do something; making someone stronger and more confident.
Example
Empowering children can lead to societal progress.
Empoderar a los niños puede conducir al progreso social.
B2 noun /ɪnˈθuziæst/

enthusiast

entusiasta
Meaning
a person who is very interested in a particular activity or subject
Example
He is a football enthusiast and watches every match.
Él es un entusiasta del fútbol y ve cada partido.
B1 adverb /ˈɛlswɛr/

elsewhere

en otro lugar
Meaning
In, at, or to some other place.
Example
If you can’t find it here, try looking elsewhere.
Si no puedes encontrarlo aquí, prueba buscando en otro lugar.
B1 adverb /ɪˈfɛktɪvli/

effectively

efectivamente
Meaning
in a way that produces the desired result; efficiently and successfully
Example
The team worked together effectively to finish the project on time.
El equipo trabajó juntos efectivamente para terminar el proyecto a tiempo.
C2 noun /ɪɡˈzɛmplɑːr/

exemplar

ejemplo
Meaning
A model or pattern to be copied or imitated.
Example
She is an exemplar of kindness and generosity.
Ella es un ejemplo de amabilidad y generosidad.
B1 adjective ɪkˈstriːm

extreme

extremo
Meaning
Reaching a high or the highest degree; very great.
Example
Extreme weather patterns disrupt ecosystems.
Los patrones climáticos extremos interrumpen los ecosistemas.
C1 noun/adjective /ɪˈliːtɪst/

elitist

elitista
Meaning
A person who believes that a society should be led by an elite; showing preference for a privileged class.
Example
His elitist attitude made him unpopular among his peers.
Su actitud elitista lo hizo impopular entre sus compañeros.
C2 adjective /ɪkˈspɒzɪtəri/

expository

expositivo
Meaning
intended to explain or describe something
Example
The teacher gave an expository lecture on the topic.
El maestro dio una conferencia expositiva sobre el tema.
B2 noun /ɪˈrʌp.ʃən/

Eruption

erupción volcánica
Meaning
a sudden violent occurrence or outburst; volcanic explosion
Example
The volcanic eruption forced thousands of people to evacuate the area.
La erupción volcánica obligó a miles de personas a evacuar el área.
B2 noun /ɪɡˈzɔːstʃən/

exhaustion

agotamiento
Meaning
A state of extreme physical or mental fatigue.
Example
Chronic exhaustion can lead to burnout and decreased productivity.
El agotamiento crónico puede llevar a un agotamiento y una disminución de la productividad.
B2 adjective /ɪnˈvaɪrənmənt ˈfrɛndli/

environment-friendly

amigable con el medio ambiente
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.
Los productos ecológicos están diseñados para reducir el daño ecológico.
C1 verb /ˈɛkskəˌveɪt/

excavate

felicidad
Meaning
to dig out or remove earth carefully, often for building or archaeological purposes
Example
The workers excavated the site to prepare for construction.
No pudo esconder su felicidad cuando recibió el premio.
A2 noun /ɪˈvent/

event

evento
Meaning
something that happens, especially something important
Example
The concert was the biggest event of the year.
El concierto fue el evento más grande del año.
C1 noun ɪnˌvaɪ.rənˈmen.təl ˌtræns.fəˈmeɪ.ʃən

environmental transformation

transformación ambiental
Meaning
A significant change in environmental conditions or ecological systems.
Example
The city demonstrates environmental transformation.
La ciudad demuestra transformación ambiental.
C1 verb /ɪnˈtaɪs/

entice

atraer
Meaning
to attract or tempt someone by offering something appealing
Example
The advertisement was designed to entice customers into the store.
El anuncio fue diseñado para atraer a los clientes a la tienda.
C2 adjective /ɪkˈstɛnsəbl/

extensible

expansible
Meaning
able to be extended; capable of expansion.
Example
The software is designed to be extensible with new features.
El software está diseñado para ser expansible con nuevas funciones.
B2 noun ɪˈroʊʒən

erosion

erosión
Meaning
The gradual destruction or diminishing of something.
Example
Power struggles often lead to the erosion of humanity.
Las luchas de poder a menudo conducen a la erosión de la humanidad.
A1 verb /ɪnˈdʒɔɪ/

enjoy

disfrutar
Meaning
to take pleasure in; to have a good time
Example
I enjoy reading books in my free time.
Disfruto leer libros en mi tiempo libre.
B2 verb /ɪnˈlaɪtən/

enlighten

felicidad
Meaning
to give someone greater knowledge or understanding about a subject or situation
Example
The teacher tried to enlighten the students about ancient history.
Ella no podía ocultar su felicidad cuando recibió el premio.
C2 verb /ɛnˈdʒɔɪn/

enjoin

ordenar, prohibir
Meaning
to instruct or urge someone to do something; to prohibit legally
Example
The judge enjoined the company from continuing its activities.
El juez prohibió a la empresa continuar con sus actividades.
C1 adjective /ˌiːvænˈdʒɛlɪkəl/

evangelical

evangélico
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.
Ella creció en una comunidad de iglesia evangélica.
B1 verb /ɪkˈsplɔːr/

explore

explorar
Meaning
to travel through or study something in order to learn more about it
Example
They decided to explore the forest together.
Decidieron explorar el bosque juntos.
C1 noun /ɪmˈbɛzlmənt/

embezzlement

malversación
Meaning
The act of dishonestly taking money or property entrusted to one's care.
Example
The accountant was arrested for embezzlement of company funds.
El contador fue arrestado por la malversación de fondos de la empresa.
A2 adjective /ɪˌlɛkˈtrɒnɪk/

electronic

electrónico
Meaning
Operating with or produced by the use of electronic devices.
Example
She bought an electronic keyboard for her music lessons.
Ella compró un teclado electrónico para sus lecciones de música.
C1 adjective /ɪˈstreɪndʒd/

estranged

distante
Meaning
no longer close or affectionate with someone; alienated
Example
She felt estranged from her family after the long dispute.
Ella se sintió distante de su familia después de la larga disputa.
A2 abbreviation /iː ˈdʒiː/

e.g.

por ejemplo
Meaning
For example (from Latin 'exempli gratia').
Example
You should eat more fruits, e.g., apples and bananas.
Debes comer más frutas, por ejemplo, manzanas y plátanos.
C2 noun /ˈɛpɪkjʊr/

epicure

epicúreo
Meaning
A person who enjoys fine food and drink, often with refined taste.
Example
As an epicure, she always sought out the finest restaurants in the city.
Como epicúreo, siempre buscaba los mejores restaurantes de la ciudad.
C1 verb /ˈɛm.ə.neɪt/

emanate

emanar
Meaning
To come out or spread from a source.
Example
A sweet fragrance emanated from the garden.
Una dulce fragancia emanó del jardín.
C2 noun /ˌiː.kəʊ.tɒkˈsɪ.kə.lə.dʒi/

ecotoxicology

ecotoxicología
Meaning
The study of the effects of chemical pollution on the environment.
Example
Ecotoxicology studies the effects of pesticides on wildlife.
La ecotoxicología estudia los efectos de los pesticidas en la vida silvestre.
B2 noun ɪˈmɪʃ.ənz

emissions

emisiones
Meaning
The production and discharge of something, especially gas, heat, light, or radiation.
Example
Carbon emissions are rising globally.
Las emisiones de carbono están aumentando globalmente.
C1 adverb ɪkˌsperɪˈmentəli

experimentally

experimentalmente
Meaning
In a way that is based on or derived from experiment and observation rather than theory.
Example
Bose demonstrated findings experimentally.
Bose demostró los hallazgos experimentalmente.
C1 noun /ˈɛn.kleɪv/

enclave

enclave
Meaning
a distinct area or group enclosed within a larger one
Example
The city has a small Italian enclave where traditions are preserved.
La ciudad tiene un pequeño enclave italiano donde se preservan las tradiciones.
B2 noun /ˈɛmbəsi/

embassy

embajada
Meaning
the official residence or offices of an ambassador
Example
He works at the French embassy in Dhaka.
Él trabaja en la embajada francesa en Dhaka.
C1 adjective /ˈevər ˈlæstɪŋ/

Ever-lasting

eterno; permanente;
Meaning
eternal; permanent; enduring forever
Example
Their love is ever-lasting and will never fade.
Su amor es eterno y nunca se desvanecerá.
C1 noun ɪˈveɪ.ʒən

evasion

evasión
Meaning
The practice of avoiding or escaping from something, especially responsibility or duty.
Example
His evasion of responsibilities frustrated his colleagues.
Su evasión de responsabilidades frustró a sus colegas.
C1 noun /ɪɡˌzɪl.əˈreɪ.ʃən/

exhilaration

exaltación o felicidad
Meaning
A feeling of excitement, happiness, or elation.
Example
The feeling of exhilaration after a roller-coaster ride is amazing.
La sensación de exhilaración después de una montaña rusa es increíble.
C1 noun /ˌɛksɛnˈtrɪsəti/

eccentricity

excentricidad
Meaning
the quality of being unconventional or slightly strange
Example
His eccentricity made him both admired and misunderstood.
Su excentricidad lo hizo ser tanto admirado como incomprendido.
A2 noun /ˈɪər.ɪŋ/

Ear-ring

arete
Meaning
a piece of jewelry worn on the earlobe or ear
Example
Her diamond earrings caught everyone's attention.
Sus aretes de diamantes llamaron la atención de todos.
C1 verb /ˈiːkwəlaɪz/

equalize

igualar
Meaning
To make equal or level in status, value, or amount.
Example
The team equalized the score in the last minute.
El equipo igualó el marcador en el último minuto.
C2 adjective /ˌɛkjʊˈmɛnɪkəl/

ecumenical

unidad religiosa ecuménica
Meaning
Promoting unity among different Christian churches or religions.
Example
The leaders gathered for an ecumenical conference to encourage dialogue.
Los líderes se reunieron para una conferencia ecuménica para fomentar el diálogo.
A2 abbreviation /ɛtˈsɛtərə/

etc

etcétera
Meaning
Used to indicate additional, similar items in a list that are not mentioned.
Example
The shop sells fruits, vegetables, dairy, etc.
La tienda vende frutas, verduras, lácteos, etcétera.
B2 verb /ɪnˈkaʊntər/

encounter

encontrar / enfrentarse a
Meaning
to unexpectedly meet someone or experience something, especially something difficult or new
Example
During the hike, we encountered a wild bear.
Durante la caminata, nos encontramos con un oso salvaje.
B1 adjective /ɪkˈspɪəriənst/

experienced

experimentado
Meaning
having knowledge or skill in a particular field gained through experience
Example
She is an experienced teacher who knows how to handle difficult students.
Ella es una profesora experimentada que sabe cómo manejar a estudiantes difíciles.
C1 verb /ɪnˈdaʊ/

endow

dotar
Meaning
To provide with a quality, ability, or gift; to donate funds for a purpose.
Example
The university was endowed with a generous donation.
La universidad fue dotada con una generosa donación.
C1 verb ɪɡˈzɛm.plɪ.faɪ

exemplify

ejemplificar
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.
Su dedicación ejemplifica el verdadero liderazgo.
A1 pronoun /ˈɛvrɪwʌn/

everyone

todos
Meaning
every person; all people
Example
Everyone must bring their own lunch.
Todos deben traer su propio almuerzo.
C2 noun /ɛˌspriː də ˈkɔːr/

esprit de corps

sentimiento de grupo
Meaning
A feeling of pride, fellowship, and loyalty shared by members of a group.
Example
The team's esprit de corps was evident in their cooperative effort.
El sentimiento de grupo del equipo era evidente en su esfuerzo cooperativo.
B2 adjective ˌiːvəˈluːʃənəri

evolutionary

evolutivo
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.
Los cambios evolutivos en las especies son fascinantes.
C1 adjective /ˈɜːr.nɪst/

Earnest

serio; genuino; mostrando profunda y seria convicción
Meaning
sincere; genuine; showing deep and serious conviction
Example
He made an earnest attempt to solve the problem.
Él hizo un intento serio de resolver el problema.
A2 noun /ɪˌlɛkˈtrɪsɪti/

electricity

electricidad
Meaning
A form of energy resulting from the existence of charged particles.
Example
The storm caused a power cut and we had no electricity.
La tormenta causó un corte de energía y no teníamos electricidad.
B2 verb /ˈɛmɪˌɡreɪt/

emigrate

emigrar
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.
Muchas personas emigraron de Europa a América en el siglo XIX.
C1 adjective /ˌɛnɪɡˈmætɪk/

enigmatic

enigmático
Meaning
mysterious and difficult to interpret or understand
Example
He gave me an enigmatic smile.
Él me dio una sonrisa enigmática.