catalyze
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C1 verb /ˈkætəˌlaɪz/

catalyze

Meaning
To cause or accelerate a reaction or change.
Example
The new law catalyzed reforms across the sector.
C1 adjective /ˈeɪmləs/

Aimless

Meaning
without purpose or direction; lacking a goal
Example
He wandered around the city in an aimless manner.
C1 verb /ɪkˈspaʊnd/

expound

Meaning
to present and explain in detail
Example
The professor expounded the theory in simple terms.
C1 adjective + noun njuˈtrɪʃəs krɒps

nutritious crops

Meaning
Plants or vegetables that are rich in nutrients and beneficial for health
Example
Winter vegetables are considered nutritious crops.
C1 noun /ˈmɒn.ə.təʊn/

monotone

Meaning
A continuous sound, especially of a person's voice, that does not rise and fall in pitch.
Example
The teacher's monotone made the lecture hard to follow.
C1 adjective /ˌmet.əˈbɒl.ɪk/

metabolic

Meaning
Relating to the chemical processes that occur within a living organism in order to maintain life.
Example
Regular exercise enhances metabolic efficiency.
C1 noun /ɪkˈstræv.ə.ɡəns/

Extravagance

Meaning
lack of restraint in spending money; excessive expense
Example
The wedding celebration was criticized for its unnecessary extravagance.
C1 noun /daɪˈvɜː.dʒəns/

divergence

Meaning
The process or state of diverging; a difference or deviation between two or more things.
Example
The divergence in their opinions led to a heated debate.
C1 adjective ʌnˈmætʃt

unmatched

Meaning
Not equaled or rivaled by any other; without equal.
Example
The freedom fighters showed unmatched bravery.
C1 noun /ˈænti ˈeəkræft ɡʌn/

Anti-aircraft-gun

Meaning
a weapon designed to attack aircraft from the ground
Example
The anti-aircraft gun was positioned to defend the military base.
C1 adverb /ˌðɛrəˈbaʊt/

thereabout

Meaning
Approximately or around that place, amount, or time.
Example
The repairs will cost five hundred dollars or thereabout.
C1 noun /ˈmɛrɪɡoʊld/

Marigold

Meaning
a bright orange or yellow flower of the daisy family, often used in gardens and ceremonies
Example
The vibrant marigold flowers added a splash of color to the festival decorations.
C1 verb /ˈkæptɪveɪt/

captivate

Meaning
to attract and hold the interest of; to charm or fascinate
Example
Her beautiful voice captivated the audience.
C1 adjective /dɪˈlæpɪˌdeɪtɪd/

dilapidated

Meaning
Fallen into disrepair or ruin due to neglect or age.
Example
The family lived in a dilapidated house at the edge of town.
C1 noun /ˌɒk.sɪ.dʒɪˈneɪ.ʃən/

oxygenation

Meaning
The process of supplying or treating with oxygen.
Example
Deep breathing exercises improve oxygenation of the body.
C1 adjective /ɪˈleɪtɪd/

elated

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

allude

Meaning
To refer to something indirectly or casually.
Example
The professor alluded to Shakespeare during the lecture.
C1 noun /ˈbaɪ.lɔː/

by-law

Meaning
A rule made by a company, organization, or local authority to control the actions of its members.
Example
The city council passed a new by-law regulating street vendors.
C1 verb /ɪmˈpɪndʒ/

impinge

Meaning
to have an effect or impact on something; to encroach or infringe
Example
The noise from the construction site impinges on our daily activities.
C1 verb /ˈpɑːzɪt/

posit

Meaning
To assume or suggest something as a fact or basis for reasoning.
Example
The scientist posited a new theory to explain the phenomenon.
C1 adverb /ˈæm.ɪ.kə.bli/

Amicably

Meaning
in a friendly way without anger or resentment
Example
The divorce was settled amicably between both parties.
C1 verb /krɪndʒ/

cringe

Meaning
To shrink back in fear, embarrassment, or discomfort.
Example
She cringed when she remembered her mistake.
C1 verb /ˈpɜːmieɪt/

permeate

Meaning
Spread throughout (something); pervade.
Example
The scent of fresh flowers permeated the entire room.
C1 verb, noun /kweɪl/

quail

Meaning
verb: to feel or show fear; noun: a small, short-tailed bird
Example
She quailed at the sight of the approaching storm.
C1 adjective /ɪɡˈzɪləreɪtɪŋ/

exhilarating

Meaning
Making someone feel very excited, happy, or thrilled.
Example
Skydiving was the most exhilarating experience of his life.
C1 adjective /əˈlʊr.ɪŋ/

Alluring

Meaning
attractive and tempting; fascinating
Example
The alluring fragrance of roses filled the garden.
C1 noun /ˈprəʊ.lɒɡ/

prologue

Meaning
an introduction to a book, play, or event
Example
The novel begins with a short prologue set in the past.
C1 noun /ˈmaɪzər/

miser

Meaning
A person who hoards wealth and spends as little money as possible.
Example
The old miser refused to donate even a penny to charity.
C1 noun /əˌsæsɪˈneɪʃən/

assassination

Meaning
The act of killing someone important, often for political or ideological reasons.
Example
The assassination of the president shocked the nation.
C1 noun /ˈtraɪ.pɒd/

tripod

Meaning
A three-legged stand used to support a camera, telescope, or other object.
Example
The photographer set up his camera on a tripod.
C1 noun /ˌfɪɡjʊˈriːn/

figurine

Meaning
a small ornamental statue or model of a human or animal
Example
She bought a porcelain figurine of a dancing ballerina.
C1 verb /kəˈpɪtjʊˌleɪt/

capitulate

Meaning
to surrender or give in after resisting
Example
The army had no choice but to capitulate to the enemy.
C1 noun dɪˌlɪb.əˈreɪ.ʃən

deliberation

Meaning
Long and careful consideration or discussion.
Example
The agreement was finalized after much deliberation.
C1 noun /streɪt/

strait

Meaning
A narrow passage of water connecting two seas or two large areas of water.
Example
The Strait of Gibraltar connects the Atlantic Ocean and the Mediterranean Sea.
C1 verb /flɪntʃ/

flinch

Meaning
to suddenly move back or away due to fear or pain
Example
He didn’t flinch when the doctor gave him the injection.
C1 adjective /ˌɪnsɪˈdɛntəl/

incidental

Meaning
happening as a minor part or in connection with something else
Example
Incidental expenses like snacks and tips were included in the bill.
C1 adjective /mjuːˈnɪsɪpəl/

municipal

Meaning
relating to a city or town or its local government
Example
The municipal authority is responsible for maintaining the park.
C1 noun ˌmɪt.ɪˈɡeɪ.ʃən

mitigation

Meaning
The action of reducing the severity, seriousness, or painfulness of something.
Example
Mitigation of climate change requires collective effort.
C1 noun /hjuː/

hue

Meaning
A color or shade.
Example
The artist chose a soft blue hue for the background.
C1 verb /ˌɪn.trəˈspekt/

introspect

Meaning
To examine one's own thoughts, feelings, or mental state.
Example
He often introspects before making important decisions.
C1 noun /ˌdɪs.ɪˈluː.ʒən.mənt/

disillusionment

Meaning
A feeling of disappointment resulting from the discovery that something is not as good as one believed it to be.
Example
Many people experience disillusionment after unrealistic expectations.
C1 adjective/noun nɪˈmɒn.ɪk

mnemonic

Meaning
Assisting or intended to assist memory; a device or technique to aid memory.
Example
A mnemonic device helps students remember complex concepts.
C1 verb /ˈhaɪtən/

heighten

Meaning
to make or become greater in intensity or degree
Example
The announcement served to heighten the excitement in the room.
C1 adverb /maɪˈnjuːtli/

Minutely

Meaning
in very small detail; extremely carefully
Example
The detective examined the evidence minutely.
C1 adjective /ˈaʊt.kɑːst/

Outcast

Meaning
rejected by society; excluded person
Example
He felt like an outcast in his new school.
C1 adjective /ˈdʒuː.bɪ.lənt/

jubilant

Meaning
feeling or expressing great happiness and joy
Example
The team was jubilant after winning the championship.
C1 noun /ɡrəˈtjuːɪti/

gratuity

Meaning
A sum of money given as a tip or a retirement benefit.
Example
The waiter received a generous gratuity for his excellent service.
C1 noun /ˈkʌˈs.tə.di/

Custody

Meaning
the protective care or guardianship of someone or something; imprisonment or detention
Example
After the divorce, they shared custody of their children equally.
C1 noun /ˈɪrˌplʌɡ/

earplug

Meaning
a device inserted into the ear to block out noise or water
Example
He wore earplugs to sleep during the noisy night.
C1 adjective /ɪnˈtrɛpɪd/

intrepid

Meaning
fearless and adventurous, often used humorously
Example
The intrepid traveler explored the jungle alone.
C1 adjective /dɪˈmɒnstrəbl/

demonstrable

Meaning
clearly able to be shown or proven
Example
There was demonstrable evidence that he was innocent.
C1 adjective /frɔːt/

fraught

Meaning
Filled with or likely to result in something undesirable.
Example
The negotiations were fraught with tension and uncertainty.
C1 adjective /ˌpæθəˈlɑːdʒɪkəl/

pathological

Meaning
Relating to disease; extreme or obsessive in a way that is abnormal.
Example
He has a pathological fear of failure.
C1 adjective /ʌnˈsəʊʃəbl/

unsociable

Meaning
not enjoying the company of others; avoiding social interaction
Example
He became unsociable after moving to a new city.
C1 verb /riːˈkæptʃər/

recapture

Meaning
To take back or regain possession of something.
Example
The army managed to recapture the lost territory.
C1 noun /ˈtrɛtʃəri/

treachery

Meaning
Betrayal of trust; deceptive action or nature.
Example
His treachery was revealed when he sided with the enemy.
C1 verb /ˈfɔːlsɪfaɪ/

falsify

Meaning
to make something false or to misrepresent
Example
He tried to falsify the documents to avoid taxes.
C1 noun dɪˈtɜː.mɪ.nənt

determinant

Meaning
A factor that decisively affects the nature or outcome of something.
Example
Education is a key determinant of success.
C1 adjective /səbˈdʒɛktɪv/

subjective

Meaning
based on personal feelings, tastes, or opinions rather than facts
Example
Beauty is often considered a subjective concept.
C1 noun /ˈbreɪkər/

breaker

Meaning
A person or thing that breaks something; a large sea wave that breaks into foam near the shore; a device that interrupts an electric circuit.
Example
The breaker tripped during the storm, cutting off electricity.
C1 adjective /ˌɒstɛnˈteɪʃəs/

ostentatious

Meaning
Characterized by a showy or pretentious display intended to impress others.
Example
He wore an ostentatious gold chain to the party.
C1 adjective /ˈreɪdiənt/

radiant

Meaning
Shining brightly; expressing great happiness.
Example
She looked radiant in her wedding dress.
C1 noun /ˈkɑːrtɪlɪdʒ/

cartilage

Meaning
A firm, flexible connective tissue found in various parts of the body such as joints, ear, and nose.
Example
The doctor explained that the injury damaged the cartilage in his knee.
C1 noun/verb /tɔːrˈpiːdoʊ/

torpedo

Meaning
A self-propelled underwater missile; to attack or destroy something suddenly and forcefully.
Example
The submarine launched a torpedo at the enemy ship.
C1 noun /bɑːm/

balm

Meaning
A soothing ointment or something that provides comfort or relief.
Example
The balm helped relieve the pain from her sunburn.
C1 adjective /dɪsˈsɪmɪlər/

dissimilar

Meaning
Not alike; different.
Example
Though they are twins, their personalities are dissimilar.
C1 adjective /koʊˈɜːrsɪv/

coercive

Meaning
Relating to or using force or threats to make someone do something.
Example
The government faced criticism for adopting coercive measures against protestors.
C1 noun /ˌloʊkəˈmoʊʃən/

locomotion

Meaning
movement or the ability to move from one place to another
Example
Walking is the most common form of human locomotion.
C1 noun /ˈsteɪtəs kwoʊ/

status quo

Meaning
The existing state of affairs, especially regarding social or political issues.
Example
The government decided to maintain the status quo until further review.
C1 adjective /ˌəʊvərˈstɪmjʊˌleɪtɪd/

overstimulated

Meaning
Excessively excited or aroused, overwhelmed by too much stimulus.
Example
Overstimulated minds can lead to burnout and decreased productivity.
C1 noun, verb /pliːt/

pleat

Meaning
a fold in fabric made by doubling the material back upon itself
Example
She added a pleat to the skirt for extra volume.
C1 verb /ˈsʌkɪŋ/

sucking

Meaning
Drawing in a liquid, air, or other substance through the mouth or a tube by creating a vacuum; also used figuratively for something unpleasant or ineffective
Example
The baby is sucking on a pacifier.
C1 noun /kəˈθɑːrsɪs/

catharsis

Meaning
The process of releasing strong emotions, providing relief.
Example
Writing in her diary was a form of catharsis for her.
C1 noun /fiːnd/

fiend

Meaning
an evil spirit or demon; a wicked or cruel person; someone obsessed with a particular thing
Example
He is a real fiend when it comes to solving puzzles.
C1 adjective /ˈænsɪləri/

ancillary

Meaning
providing necessary support to the main system or organization
Example
The company provides ancillary services to the healthcare industry.
C1 noun /kəˈpɪl.ər.iz/

capillaries

Meaning
Any of the fine branching blood vessels that form a network between the arterioles and venules.
Example
Broken capillaries cause dark circles.
C1 adjective /ˈɡæl.ənt/

gallant

Meaning
Brave, heroic, or chivalrous.
Example
The gallant firefighter saved the child from the burning building.
C1 noun /ˈrɪpəl/

Ripple

Meaning
a small wave on the surface of water; a spreading effect or influence
Example
The stone created ripples across the calm pond.
C1 verb /ˈmɑːrʃəl/

marshal

Meaning
To arrange or organize people, events, or resources in an orderly way.
Example
The teacher marshaled the students for the field trip.
C1 noun /səˈlɪn.ə.t̬i/

salinity

Meaning
The salt content of soil or water, typically measured as a concentration.
Example
The salinity of the ocean varies depending on depth and location.
C1 noun /ˈɡlɒs.ər.i/

Glossary

Meaning
an alphabetical list of terms in a particular domain of knowledge with explanations; a brief dictionary
Example
The textbook includes a helpful glossary at the end to define technical terms.
C1 verb/noun /ˈsɒldər/

solder

Meaning
To join metal parts together by melting and putting a filler metal into the joint
Example
He soldered the broken wires back together.
C1 adjective /ˈsʌmp.tʃu.əs/

sumptuous

Meaning
Splendid and expensive-looking; luxurious.
Example
The guests were treated to a sumptuous banquet.
C1 noun /ˈrɒstrəm/

rostrum

Meaning
A raised platform for speakers, performers, or leaders.
Example
The politician delivered a speech from the rostrum.
C1 noun /rɪt/

writ

Meaning
A formal written order issued by a court.
Example
The judge issued a writ of habeas corpus.
C1 phrase ˌhjuː.məˈnɪt.ər.i.kəˈtæs.trə.fi

humanitarian catastrophe

Meaning
A widespread disaster affecting human life, health, and well-being on a large scale.
Example
The war created a humanitarian catastrophe.
C1 noun /ˈmæk.rəʊˌnjuː.tri.ənts/

macronutrients

Meaning
Nutrients that are needed in large amounts to provide energy and building materials for the body, including carbohydrates, proteins, and fats.
Example
Proteins, fats, and carbohydrates are vital macronutrients.
C1 adjective /ˌʌnɪˈkwɪvəkəl/

unequivocal

Meaning
Leaving no doubt; clear and unambiguous
Example
She gave an unequivocal answer to the question.
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 /ˌeɪˈsɛkʃuəl/

asexual

Meaning
Without sexual feelings, associations, or reproduction through sex.
Example
Many plants reproduce through asexual methods like budding or splitting.
C1 adjective /prəˈfeɪn/

profane

Meaning
showing disrespect or contempt for sacred things; irreverent or vulgar
Example
His jokes were considered too profane for the ceremony.
C1 noun səˈlɪnɪti ɪnˈtruːʒən

salinity intrusion

Meaning
The movement of salt water into freshwater areas, typically affecting coastal regions.
Example
Salinity intrusion affects coastal regions.
C1 adjective /ˌjuːtɪlɪˈtɛəriən/

utilitarian

Meaning
Designed to be useful or practical rather than attractive; relating to the doctrine that actions are right if they are useful or for the benefit of a majority.
Example
The building had a simple utilitarian design.
C1 noun ˌflʌk.tʃuˈeɪ.ʃən

fluctuation

Meaning
An irregular rising and falling in number or amount; a variation.
Example
The stock market experiences frequent fluctuation.
C1 noun /ˈblɒk.ɪdʒ/

Blockage

Meaning
an obstruction that makes movement or flow difficult or impossible
Example
The drain blockage caused water to overflow in the kitchen.
C1 adjective /əˈblɪɡ.ə.tɔː.ri/

obligatory

Meaning
Required by a legal, moral, or other rule; compulsory.
Example
Wearing a seatbelt is obligatory in most countries.
C1 verb /ɪnˈsjuː/

ensue

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

resonate

Meaning
To produce or be filled with a deep, full, and reverberating sound; to evoke a feeling or memory.
Example
Her words resonated with the audience.
C1 noun /rɪˈnaʊn/

Renown

Meaning
the condition of being known or talked about by many people; fame
Example
The scientist achieved international renown for her discoveries.
C1 noun /ˈdɔːrˌkiːpər/

doorkeeper

Meaning
A person whose job is to guard or manage the entrance of a building or room.
Example
The doorkeeper checked everyone’s passes before they entered the hall.
C1 adjective /ˈmɑːrʃəl/

martial

Meaning
Related to war, soldiers, or military life.
Example
The country imposed martial law during the crisis.
C1 noun ˈkɔː.pəs

corpus

Meaning
A large collection of linguistic data used for language analysis and research.
Example
Linguists use a corpus to analyze language patterns.
C1 verb /ɪnˈlɪst/

enlist

Meaning
to join or sign up, especially for military service; to secure someone's support or help
Example
He decided to enlist in the army after graduation.
C1 noun, verb /wɪf/

whiff

Meaning
A brief, faint smell or puff of air; to get a quick smell of something.
Example
I caught a whiff of perfume as she passed by.
C1 noun /fæd/

fad

Meaning
a temporary fashion or trend; a short-lived craze
Example
The new diet became a popular fad among teenagers.
C1 noun /rɛnˈdɪʃən/

rendition

Meaning
a performance or interpretation of a piece of art, music, or text
Example
The singer gave a moving rendition of the classic song.
C1 noun /ˈoʊvərˌtʊr/

overture

Meaning
An introduction to something more substantial; a proposal or preliminary action.
Example
The peace overture was welcomed by both nations.
C1 noun ˌmɛməraɪˈzeɪʃən

memorization

Meaning
The process of learning or committing something to memory
Example
Memorization of important information is crucial for exams.
C1 verb /ˈpleɪdʒəraɪz/

plagiarize

Meaning
to take someone else's work or ideas and present them as your own
Example
He was warned not to plagiarize his friend's essay.
C1 verb /ˌdɪsɪmˈbɑːrk/

disembark

Meaning
To leave a ship, aircraft, or other vehicle.
Example
The passengers disembarked from the plane after landing.
C1 verb /bɔːk/

balk

Meaning
to hesitate or refuse to proceed or comply
Example
She balked at signing the contract without reading it fully.
C1 noun ˈdɛf.ər.əns

deference

Meaning
Humble submission and respect.
Example
He showed deference to his elderly mentor.
C1 adjective /ˈraɪtfəl/

rightful

Meaning
having a legitimate or just claim; proper or lawful
Example
She is the rightful owner of the property.
C1 noun /ˈtoʊ.pæz/

Topaz

Meaning
a precious stone, typically colorless, yellow, or blue, used in jewelry
Example
The queen's crown was adorned with a magnificent blue topaz.
C1 verb /ˈθiːəraɪz/

theorize

Meaning
To form a theory or set of ideas to explain something.
Example
Scientists often theorize about the origins of the universe.
C1 adjective /ˈpɪər.ləs/

Peerless

Meaning
unequaled; having no match or equal; without rival
Example
Her peerless beauty captivated everyone.
C1 adjective + noun ʌnˈpresɪdentɪd ˈnɒlɪdʒ

unprecedented knowledge

Meaning
Information or understanding that has never been obtained or achieved before.
Example
Artemis will provide unprecedented knowledge about the solar system.
C1 noun /ˈɡreɪdiənt/

gradient

Meaning
A gradual slope, or the degree of inclination of a surface.
Example
The cyclist struggled up the steep gradient of the hill.
C1 noun /niːʃ/

Niche

Meaning
A specialized segment of the market for a particular kind of product or service.
Example
Finding the right niche is key to a successful business.
C1 adjective /ˈvɛrɪtəbl/

veritable

Meaning
used to emphasize that something is genuine or true
Example
The house was a veritable palace compared to ours.
C1 verb /ɪˈkweɪt/

equate

Meaning
To consider as equal or equivalent.
Example
Many people equate wealth with success.