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C2 noun /ˈreɪdɪks/

radix

Meaning
the base or root of something; the number on which a system of numeration is built
Example
In mathematics, the decimal system has a radix of ten.
B2 noun /ˈwaɪld.laɪf ˌkɒnsərˈveɪʃən/

wildlife conservation

Meaning
The practice of protecting wild animal species and their habitats in order to maintain healthy wildlife species or populations and to restore, protect or enhance natural ecosystems.
Example
Wildlife conservation aims to protect endangered species.
B2 noun /ˌænθrəˈpɒlədʒi/

anthropology

Meaning
the scientific study of humans, their societies, cultures, and development
Example
She decided to major in anthropology at university.
B2 noun/verb /ˌoʊvərˈlæp/

overlap

Meaning
To extend over and cover partly; an area where things coincide.
Example
The two meetings overlap by an hour.
C2 verb /ˈmæstɪkeɪt/

masticate

Meaning
to chew food thoroughly before swallowing
Example
He slowly masticated the bread before swallowing.
B2 adverb /ˌnɒnˈstɒp/

Non-stop

Meaning
continuing without stopping; without interruption
Example
The train traveled non-stop from London to Paris.
A2 adjective /ˈklɛvər/

clever

Meaning
Quick to understand, learn, and devise ideas or solutions; intelligent.
Example
She is clever enough to solve the puzzle quickly.
C1 noun /dɪˈfaɪəns/

defiance

Meaning
Open resistance or bold disobedience.
Example
The protest was an act of defiance against injustice.
C1 adjective /hɔːrs/

Hoarse

Meaning
rough or harsh in sound; having a rough voice from shouting or illness
Example
His voice became hoarse after shouting at the concert.
B2 noun /ˌmænjəˈfæktʃərɪŋ/

manufacturing

Meaning
the process of making products on a large scale using machinery
Example
The country is investing heavily in the manufacturing sector.
C2 verb /diːˈmoʊbəlaɪz/

demobilize

Meaning
To release from military service or to disband troops.
Example
The government decided to demobilize the army after the war.
C1 adjective /ˈsaʊnd.pruːf/

Sound-proof

Meaning
impervious to sound; preventing sound from entering or leaving
Example
The recording studio has sound-proof walls.
C2 noun əˈkjuː.ə.ti

acuity

Meaning
Sharpness or keenness of thought, vision, or hearing.
Example
His intellectual acuity made him a brilliant scientist.
C2 noun /ˈɑːbəlɪsk/

obelisk

Meaning
A tall, four-sided, narrow tapering monument with a pyramid-shaped top.
Example
The ancient Egyptians built obelisks to honor their gods.
C1 noun /ˈɡreɪ.haʊnd/

Greyhound

Meaning
a tall, thin dog with long legs that can run very fast
Example
The greyhound won the race at the dog track.
C2 noun /ˈpær.ɪ.saɪd/

parricide

Meaning
The act of killing one's father, mother, or other close relative.
Example
The court tried him for parricide after the tragic incident.
A2 noun /ˈiː.ɡəl/

Eagle

Meaning
large bird of prey with powerful wings and sharp talons
Example
The eagle soared high above the mountains.
C1 verb /sɪndʒ/

singe

Meaning
To burn something superficially or lightly, especially at the edges.
Example
The fire singed his eyebrows.
C2 adjective /ɪnˈɛksərəbl/

inexorable

Meaning
Impossible to stop or prevent; relentless.
Example
The inexorable rise of technology is changing every aspect of life.
C1 adjective /məˈtɜːrnəl/

Maternal

Meaning
relating to a mother; motherly
Example
She showed maternal care towards the orphan child.
B2 adjective /ˈtræŋkwɪl/

tranquil

Meaning
Free from disturbance; calm and peaceful.
Example
A tranquil environment promotes relaxation and focus.
B2 noun /ˈθæŋksˌɡɪvɪŋ/

thanksgiving

Meaning
an annual holiday in the US for giving thanks, celebrated with a meal
Example
We spent Thanksgiving dinner with our family.
C1 adjective ˈwɛðərpruːf

weatherproof

Meaning
Able to resist or be unaffected by weather, especially rain and wind.
Example
The materials used are weatherproof, ensuring longevity.
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.
B2 adjective /proʊn/

Prone

Meaning
having a tendency to; inclined; lying face down
Example
He is prone to making mistakes when he's tired.
C2 adverb, adjective /ˈɡrætɪs/ or /ˈɡreɪtɪs/

gratis

Meaning
Without charge; free of cost.
Example
The drinks at the event were provided gratis.
B2 verb /ɪnˈfɛkt/

infect

Meaning
To contaminate with a disease-causing organism.
Example
The virus can infect healthy people quickly.
C1 adjective /kənˈvɜːrdʒənt/

convergent

Meaning
tending to move toward a common point or result
Example
The two rivers have a convergent path before entering the lake.
C2 adjective /dɪsˈpɛptɪk/

dyspeptic

Meaning
Relating to indigestion or having a gloomy or irritable disposition.
Example
After the heavy meal, he felt dyspeptic and uncomfortable.
B2 noun /ɪnˈfek.ʃən/

Infection

Meaning
the process of infecting or the state of being infected; a disease caused by germs
Example
The doctor prescribed antibiotics to treat the bacterial infection in her throat.
C1 verb /wɔːrp/

warp

Meaning
To twist or bend out of shape, often due to heat or moisture.
Example
The wooden door warped in the summer heat.
B2 noun /kleɪ/

clay

Meaning
a natural material made of fine earth that becomes hard when baked, used for making pottery
Example
The artist molded the wet clay into a beautiful vase.
B2 noun ˈæt.rɪ.bjuːt

attribute

Meaning
A quality or feature regarded as a characteristic or inherent part of someone or something.
Example
An important attribute of wood is its flexibility.
C1 adjective /ˈhæloʊd/

hallowed

Meaning
regarded as holy or greatly respected
Example
They walked across the hallowed halls of the old university.
C1 verb /skʌlpt/

sculpt

Meaning
to create or shape something by carving or molding
Example
The artist sculpted a beautiful statue from marble.
C1 verb dɪˈsɜːn

discern

Meaning
To perceive or recognize something; to distinguish with difficulty by sight or with the other senses.
Example
He could barely discern the distant figure in the fog.
C2 adjective ɪnˈfiː.zə.bəl

infeasible

Meaning
Not possible to do easily or conveniently; impracticable.
Example
Restoring the forest may become infeasible if destruction continues.
B2 noun /ˈɪdɪət/

idiot

Meaning
a person who acts in a way that is considered very stupid or foolish
Example
He acted like an idiot at the party last night.
C1 noun /ˈper.ɪ.wɪŋ.kəl/

Periwinkle

Meaning
a small trailing plant with violet-blue or white flowers
Example
Purple periwinkles covered the garden ground beautifully.
B2 noun /əˈsaɪləm/

asylum

Meaning
Protection or shelter, especially given to refugees or the mentally ill.
Example
The refugees sought asylum in the neighboring country.
C1 noun /ɔːˈtɒmətən/

automaton

Meaning
A machine that works automatically; also refers to a person who behaves like a machine, without thinking.
Example
He worked like an automaton, without showing any emotion.
B1 adjective /ˌstreɪtˈfɔːwəd/

straightforward

Meaning
easy to understand or do; simple
Example
Her explanation was straightforward and clear.
C1 verb /rɪˈpʌls/

repulse

Meaning
to drive back an attack or attacker by force; to cause intense dislike or disgust
Example
The army managed to repulse the enemy attack.
B1 adjective /ˌoʊvərˈweɪt/

overweight

Meaning
heavier than is considered healthy or normal
Example
The doctor advised him to lose weight as he was overweight.
C2 adjective /nɪˈfɛəriəs/

nefarious

Meaning
Wicked, criminal, or morally bad.
Example
The police uncovered a nefarious plot to cheat investors.
A2 noun /ˈbʌtərflaɪ/

butterfly

Meaning
an insect with large, often brightly colored wings that flies during the day
Example
A beautiful butterfly landed on the flower.
B2 noun kəˈmɪʃ.ən

commission

Meaning
An official group of people entrusted by a government with a particular function.
Example
The commission recommends constitutional reforms.
B1 noun /ˈsɛtɪŋ/

setting

Meaning
the environment or place where something happens
Example
The setting of the movie was a beautiful beach.
C2 adjective /ˈbʌlbəs/

bulbous

Meaning
Bulging, round, or swollen in shape; resembling a bulb.
Example
The frog had a bulbous nose and big eyes.
C2 verb /ɪnˈfætʃueɪt/

infatuate

Meaning
to inspire with an intense but short-lived passion or admiration
Example
He was infatuated with her beauty.
C1 verb /tʃɑːr/

char

Meaning
To burn or scorch something so that it becomes blackened.
Example
The cook accidentally charred the steak.
C1 verb /mɑːrd/

marred

Meaning
to spoil or damage the quality or appearance of something
Example
The celebration was marred by bad weather.
C1 adjective /ˈvɛlvəti/

velvety

Meaning
having a smooth, soft texture like velvet
Example
She spoke in a low, velvety voice.
B2 adjective /ɪnˈfekʃəs/

infectious

Meaning
capable of causing infection or disease; spreading easily from one person to another; able to spread feelings or attitudes such as enthusiasm
Example
Her infectious laughter made everyone in the room smile.
B2 noun /ˌkɑn.trəˈdɪk.ʃən/

Contradiction

Meaning
a combination of statements, ideas, or features which are opposed to one another; inconsistency
Example
There was a clear contradiction between his words and his actions.
B2 adjective /ˈpeɪ.ə.bəl/

Payable

Meaning
required to be paid; owed as a debt
Example
The amount is payable within thirty days of the invoice date.
C1 verb /ˈsaɪdˌstɛp/

sidestep

Meaning
To avoid something by stepping aside; to evade a problem or question indirectly.
Example
The politician tried to sidestep the difficult question.
B1 verb /krɔːl/

crawl

Meaning
to move slowly on hands and knees; to move very slowly
Example
The baby crawled across the floor to reach the toy.
B1 noun ˌkriː.eɪˈtɪv.ɪ.ti

creativity

Meaning
The ability to use imagination to produce original ideas or to make something new or imaginative.
Example
His creativity was evident in his artwork.
B1 noun /ˈkær.ə.væn/

Caravan

Meaning
a group of people traveling together, especially through desert areas
Example
The merchant caravan crossed the desert with camels carrying precious goods.
C2 noun /ˈdaɪˌsɪləbəl/

disyllable

Meaning
a word consisting of two syllables
Example
The word 'happy' is a disyllable.
C1 verb /daɪˈvʌldʒ/

divulge

Meaning
to make known something private, secret, or previously unknown
Example
She refused to divulge the source of her information.
B1 verb /əˈdʒʌst/

adjust

Meaning
to change something slightly to make it more suitable or effective
Example
She adjusted the mirror to see the road clearly.
C2 adjective /ˌdeɪ.kɒlˈteɪ/

decollete

Meaning
of a woman's dress or top, cut low so as to reveal the neck and upper chest
Example
She wore a decollete gown to the party.
C1 noun /təˈnæs.ə.ti/

tenacity

Meaning
Determination, persistence, and the quality of not giving up
Example
His tenacity in solving problems led to his success.
C2 adjective /ˈkæp.ʃəs/

Captious

Meaning
tending to find fault or raise petty objections; fault-finding; critical
Example
His captious remarks about every small detail made the meeting very unpleasant.
B2 verb /prɪˈveɪl/

prevail

Meaning
To prove more powerful or superior; to be widespread or common.
Example
Justice will always prevail over injustice.
A2 noun /lɪst/

List

Meaning
a number of connected items or names written or printed consecutively, typically one below the other
Example
Make a list of things you need to buy.
B2 adjective ˈhæzədəs

hazardous

Meaning
Dangerous, risky, or potentially harmful
Example
Hazardous pollutants increase health risks.
C1 noun /ɪmˌpɒsəˈbɪlɪti/

impossibility

Meaning
the state or fact of being impossible; something that cannot be done or achieved
Example
Finishing the project in one day was an impossibility.
C1 verb /ˈlɔːndər/

launder

Meaning
to wash clothes, linens, etc.; or to conceal the origins of money obtained illegally
Example
She laundered all the dirty clothes on Sunday.
B2 noun ˈænsɛstərz

Ancestors

Meaning
A person from whom one is descended; a forefather.
Example
The family tree shows the names of all ancestors.
C1 noun /ˈpɛsəl/

pestle

Meaning
A heavy tool with a rounded end used for crushing or grinding substances in a mortar.
Example
She used a pestle to grind the spices.
C1 noun /naɪˈiːvteɪ/

naivete

Meaning
The quality of being naive; lack of experience, wisdom, or judgment.
Example
His naivete made him an easy target for manipulation.
B2 noun /ˈtɔːrsoʊ/

torso

Meaning
The trunk of the human body, excluding the head and limbs.
Example
The artist painted the torso of the model in great detail.
A2 adjective /əˈlaɪv/

Alive

Meaning
living; not dead; full of life and energy
Example
The old man is still alive and healthy.
C2 adjective /ˈprɑːflɪɡət/

profligate

Meaning
recklessly extravagant or wasteful in resources
Example
The king was known for his profligate lifestyle.
B1 noun /koʊm/

Comb

Meaning
a toothed device for arranging or cleaning the hair
Example
She used a comb to style her hair before the party.
B1 adjective /roʊˈmæn.tɪk/

Romantic

Meaning
relating to love; idealistic; dreamy
Example
They enjoyed a romantic dinner by candlelight.
A2 adjective /ˈkruːəl/

cruel

Meaning
Willfully causing pain or suffering to others, or feeling no concern about it.
Example
It was cruel to make fun of the injured boy.
C1 noun ˌlɪb.ərˈeɪ.ʃən

liberation

Meaning
The action of setting someone free from imprisonment, slavery, or oppression; release.
Example
Liberation movements inspired many countries.
B1 adjective kənˈsɪs.tənt

consistent

Meaning
Acting or done in the same way over time, especially so as to be fair or accurate.
Example
Consistent performance leads to success.
B2 verb /ˈdɛzɪɡneɪt/

designate

Meaning
to officially assign, appoint, or indicate something or someone
Example
The committee will designate a new chairperson next week.
B2 adjective /ˈlɪniər/

linear

Meaning
Arranged in or extending along a straight line.
Example
The artist used linear perspective in his drawings.
C1 noun /ˈtriːkəl/

treacle

Meaning
A thick, sweet syrup; excessively sentimental speech or writing.
Example
She poured treacle over the pancakes.
B2 noun, verb /ˈbʌŋkər/

bunker

Meaning
a reinforced underground shelter; to place or store something in a protected place
Example
They hid in a bunker during the air raid.
B2 adjective /ˈdɪl.ɪ.dʒənt/

Diligent

Meaning
hardworking and careful; showing persistent effort
Example
She is a diligent student who studies every day.
C2 verb /dɪsˈmɛmbər/

dismember

Meaning
to cut or tear the limbs from a body; to divide into separate parts
Example
The king ordered his enemies to be dismembered.
C2 adjective /ˈkwɛrʊləs/

querulous

Meaning
Complaining in a whining or irritable manner.
Example
The querulous customer kept finding fault with every detail.
B1 noun /feɪθ/

Faith

Meaning
complete trust or confidence in someone or something; strong belief in religion
Example
She had unwavering faith in her team's ability to succeed.
C2 verb /pəˈræmbjʊˌleɪt/

perambulate

Meaning
To walk through or travel around, especially for leisure.
Example
They perambulated the old town, enjoying the sights.
C2 noun /ˌɛksɪˈɡjuːɪti/

exiguity

Meaning
the quality of being scanty or meager in amount
Example
The exiguity of resources made the project difficult to complete.
B1 noun /ˈmiːtər/

meter

Meaning
A unit of length in the metric system equal to 100 centimeters; also, a device that measures quantity such as electricity or gas.
Example
The technician came to check the electricity meter.
A2 noun, verb /raʊ/ (argument), /roʊ/ (line of things)

row

Meaning
A line of things or people; also, a noisy quarrel; to propel a boat with oars.
Example
They had a loud row about money.
B1 noun /ɪnˈvɛstər/

investor

Meaning
a person or organization that puts money into financial schemes, property, or business ventures with the expectation of achieving a profit
Example
The investor funded the startup with a large sum of money.
B2 adjective /ˈsɛkʃʊəl/

sexual

Meaning
relating to the instincts, physiological processes, and activities connected with physical attraction or intimate physical contact between individuals
Example
The sexual health of individuals is an important topic in modern medicine.
B1 noun, verb /ˈmɒnɪtər/

monitor

Meaning
to observe and check the progress or quality of something; also a device that displays information
Example
The teacher monitors the students during the exam.
C1 verb /ɪˈluːmɪneɪt/

illuminate

Meaning
To light up or make something clearer.
Example
Streetlights illuminate the road at night.
B2 adjective /ˌprɒb.ləˈmæt.ɪk/

Problematic

Meaning
causing problems; troublesome; difficult to deal with
Example
The new policy changes are problematic and need to be reviewed.
C2 adjective /ˌdɪskəmˈbɑːbjuleɪtɪd/

discombobulated

Meaning
confused and disoriented; feeling unsettled
Example
She looked discombobulated after hearing the unexpected news.
B1 adverb /ˈdʒen.tli/

Gently

Meaning
in a mild, soft, or careful manner
Example
She gently touched the baby's face.
B2 noun ˈæmbɪəns

ambience

Meaning
The character and atmosphere of a place.
Example
The restaurant's ambience was relaxed and inviting, perfect for a casual dinner.
C1 noun /sɪv/

sieve

Meaning
a utensil with a mesh or perforated bottom, used for straining or sifting
Example
She used a sieve to strain the pasta.
C1 noun /ˈheɪvən/

haven

Meaning
a safe place or shelter
Example
The library became a haven for students during exams.
C1 verb /ɪnˈdɪr/

endear

Meaning
To cause someone to be loved or liked.
Example
Her kindness and generosity endeared her to the community.
C2 noun /fɔːrˈbɛrəns/

forbearance

Meaning
Patient self-control; restraint and tolerance, especially in difficult situations.
Example
She showed remarkable forbearance during the heated argument.
C2 noun /ˌkiː.təʊˈdʒen.ɪ.sɪs/

ketogenesis

Meaning
The metabolic process by which the liver produces ketones from fatty acids, providing an alternative energy source during low carbohydrate availability.
Example
Ketogenesis occurs during fasting or low-carb diets.
A2 verb /əˈreɪndʒ/

arrange

Meaning
to organize or put in order; to plan or prepare
Example
She arranged the flowers in a vase.
B2 verb /ɪmˈprɪzən/

imprison

Meaning
to put someone in prison; to confine or restrict someone's freedom
Example
The judge imprisoned the criminal for five years.
B2 noun /haɪˈiː.nə/

Hyena

Meaning
a wild animal of Africa and Asia that looks like a dog and makes a sound like laughter
Example
The hyena laughed in the darkness of the night.
B2 noun ˈɡloʊbəl kəˌlæbəˈreɪʃən

global collaboration

Meaning
Cooperation and partnership between countries or organizations worldwide to address common challenges.
Example
Global collaboration is necessary to address climate change.
B2 noun /mɪθ/

myth

Meaning
A traditional story explaining natural or social phenomena, often involving supernatural beings; a widely held but false belief.
Example
The myth of the phoenix tells of a bird reborn from its ashes.
B1 adverb /ˈpɜː.mə.nənt.li/

permanently

Meaning
in a way that lasts or remains unchanged for a long time or forever
Example
She moved to the city permanently after finishing her studies.
A2 adjective /ˈpraɪ.vət/

Private

Meaning
personal; confidential; not public; individual
Example
This is a private conversation between two friends.
B2 noun /strɪp/

Strip

Meaning
a long narrow piece of cloth, paper, plastic, or other material
Example
She tore a strip of paper from the notebook.
B2 adverb /ˈblʌnt.li/

Bluntly

Meaning
in a direct way without trying to be polite; frankly
Example
He told her bluntly that she was wrong.
C1 adverb, adjective /ˌɪnkɑːɡˈniːtoʊ/

incognito

Meaning
In disguise or with one's identity concealed.
Example
The celebrity traveled incognito to avoid the paparazzi.
C2 adjective /kəˈprɪʃəs/

capricious

Meaning
given to sudden and unaccountable changes of mood or behavior
Example
The stock market can be capricious, shifting dramatically without warning.
C2 noun /ˌhaɪdroʊməˈkænɪks/

hydromechanics

Meaning
The study of the mechanical properties and behavior of fluids in motion and at rest.
Example
Hydromechanics provides the foundation for naval architecture.
C1 noun /ˈbraɪ.dəl/

Bridle

Meaning
the headgear used to control a horse, consisting of buckled straps and a bit
Example
The rider adjusted the horse's bridle before mounting for the race.
C1 noun /nɑːrˈkɒtɪk/

narcotic

Meaning
A drug that dulls the senses and relieves pain, often causing sleep and sometimes addiction.
Example
The police seized a large amount of narcotic substances.