radioactivity
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B2 noun ˌreɪ.di.oʊ.ækˈtɪv.ə.ti

radioactivity

Meaning
The emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.
Example
Radioactivity is used in medical treatments like cancer therapy.
C1 adjective; noun /ɪˈmɔːrtl/

immortal

Meaning
living forever; never dying; lasting forever in fame or memory
Example
Legends often describe heroes as immortal beings who never die.
C1 noun, adjective /ˌproʊlɪˈtɛəriən/

proletarian

Meaning
Relating to the working class, especially those who do not own property.
Example
The movement was rooted in proletarian struggles.
A1 adjective /bɛst/

best

Meaning
Of the highest quality, excellence, or standing.
Example
She is the best student in the class.
B2 verb /ˈæmplɪˌfaɪ/

amplify

Meaning
to make sounds louder; to make something larger or more significant
Example
The microphone amplifies her voice.
B2 noun /bɪd/

Bid

Meaning
an offer to pay a certain amount for something; an attempt to obtain or achieve something
Example
She made a bid for the antique vase at the auction.
B1 verb /pərˈsweɪd/

persuade

Meaning
to convince someone to do or believe something through reasoning or argument
Example
He persuaded his friend to join the club.
B2 noun, verb /ræmp/

ramp

Meaning
a sloping surface joining two different levels; as a verb, to increase or rise sharply
Example
The car drove up the ramp into the parking garage.
C1 adjective /ɪmˈpjʊər/

Impure

Meaning
contaminated; not clean; mixed with foreign substances
Example
The impure water caused health problems in the village.
C1 noun /ˌprəʊ.baɪˈɒt.ɪks/

probiotics

Meaning
Live microorganisms that, when administered in adequate amounts, confer health benefits to the host, especially for digestive health.
Example
Probiotics improve digestion and enhance gut health.
B2 verb /ˌoʊvərˈtɜrn/

overturn

Meaning
to turn something upside down or to reverse a decision or judgment
Example
The court decided to overturn the previous ruling.
A1 verb pleɪ

play

Meaning
To have a role or function in a situation; to contribute to something.
Example
Artemis will play a crucial role in Mars exploration.
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.
C1 adjective /ˈæntɪkweɪtɪd/

antiquated

Meaning
Old-fashioned or outdated.
Example
The office still uses an antiquated filing system.
B2 verb /dɪˈsiːv/

deceive

Meaning
To cause someone to believe something that is not true.
Example
He tried to deceive his friends with a fake story.
B2 adjective /ˈbaɪəst/

Biased

Meaning
showing prejudice for or against someone or something unfairly
Example
The judge was accused of being biased against the defendant.
C2 adjective /kənˈvɪviəl/

convivial

Meaning
friendly, lively, and enjoyable; sociable
Example
The party had a convivial atmosphere with music and laughter.
C1 verb /kənˈtɛkstʃuəlaɪz/

contextualize

Meaning
to place something in a context or interpret it in relation to its surroundings
Example
The teacher contextualized the historical event to make it more relevant for students.
B2 noun prɪˈsɪʒ.ən

precision

Meaning
The quality of being exact and accurate.
Example
High precision instruments are used in surgery.
C2 verb /əˈkuːtə/

accoutre

Meaning
to dress or equip, especially in something impressive or elaborate
Example
The knight was accoutred in shining armor.
C2 noun /kwaɪˈiːtəs/

Quietus

Meaning
death or something that causes death; a final settlement
Example
The hero received his quietus from the villain's sword.
C2 adjective /ɪˈkwɪvəkəl/

equivocal

Meaning
Open to more than one interpretation; ambiguous.
Example
His equivocal answer confused everyone.
B2 verb /ɪnˈvɪʒən/

envision

Meaning
to imagine or picture something in the future; to visualize a possibility or goal
Example
She envisions a world where everyone has equal access to education.
C1 adjective fæsˈtɪd.i.əs

fastidious

Meaning
Very attentive to and concerned about accuracy and detail.
Example
She is fastidious about maintaining cleanliness.
B1 verb /əˈrɛst/

arrest

Meaning
to catch and hold by legal authority; to stop suddenly
Example
The police will arrest the suspect tomorrow.
C1 verb /ˈfɔːrtɪˌfaɪ/

fortify

Meaning
To strengthen a place, person, or thing physically or mentally.
Example
They fortified the city walls to protect against invasion.
B2 noun /ˈroʊ.lɪŋ pɪn/

Rolling pin

Meaning
a cylindrical tool used for rolling out dough or pastry
Example
Roll the dough flat with a rolling pin.
C2 adjective /lʌɡˈʒʊəriənt/

luxuriant

Meaning
abundant in growth or richly abundant
Example
The luxuriant forest was teeming with life.
C2 verb /kruːn/

croon

Meaning
to sing or hum in a soft, low, and gentle voice
Example
She crooned a lullaby to help the baby fall asleep.
A2 verb /əˈtend/

attend

Meaning
to be present at; to give attention to; to take care of
Example
I will attend the conference next week.
B2 adjective /ˈsɪn.ɪ.kəl/

cynical

Meaning
Believing that people are motivated by self-interest; distrustful of human sincerity or integrity.
Example
She was cynical about the politician's promises.
B2 adjective /ˌʌnɪnˈtenʃənəl/

Unintentional

Meaning
not done on purpose; accidental
Example
The damage to the car was unintentional.
C2 adjective /ˌʌnpriːpəˈzɛsɪŋ/

unprepossessing

Meaning
not attractive or appealing in appearance
Example
Despite his unprepossessing looks, he was very kind and intelligent.
C1 noun /bɒɡ/

bog

Meaning
an area of wet, spongy ground; a swamp or marsh
Example
The hikers got stuck in a bog.
C1 noun /ˈfɔːrˌfɑːðər/

forefather

Meaning
an ancestor, especially one who was part of an earlier generation of a family or nation
Example
Our forefathers fought for independence.
C1 noun ˈsɪmbəlɪzəm

symbolism

Meaning
The use of symbols to represent ideas or qualities.
Example
The use of symbolism in the novel is masterful.
A1 noun /ˈfraɪ.deɪ/

friday

Meaning
the day of the week following Thursday and preceding Saturday
Example
We have a team meeting every Friday afternoon.
B2 noun /ˈkaʊ.ərd/

Coward

Meaning
a person who lacks the courage to do or endure dangerous or unpleasant things
Example
He called himself a coward for not standing up to the bully.
B2 adjective /ˈvɒl.ən.tər.i/

Voluntary

Meaning
done willingly without being forced; given or done freely
Example
She made a voluntary donation to the charity.
C1 noun /prəˈtruːʒən/

protrusion

Meaning
Something that sticks out or projects from a surface.
Example
The protrusion on the wall made it difficult to move the furniture.
C1 noun /ˌʌl.tɪˈmeɪ.təm/

Ultimatum

Meaning
a final demand or statement of terms, the rejection of which will result in retaliation
Example
The boss gave him an ultimatum: improve or be fired.
C2 adjective /daɪˈɡrɛsɪv/

digressive

Meaning
Tending to depart from the main subject in speech or writing.
Example
The speaker's digressive style made the lecture difficult to follow.
C1 noun /ˈsɛdətɪv/

sedative

Meaning
A substance that calms the nerves or induces sleep.
Example
The doctor prescribed a sedative to help the patient sleep.
C2 verb /ˈkæn.tər/

canter

Meaning
To ride a horse at a controlled, easy pace between a trot and a gallop.
Example
She cantered her horse across the field with ease.
C1 verb /aʊst/

oust

Meaning
To remove someone from a position or place of power or authority.
Example
The rebels ousted the dictator from power.
A2 verb əˈdres

address

Meaning
To deal with or tackle (a problem or issue); to focus attention on.
Example
The government must address the issues of student politics.
C2 noun /dɪˌlæpɪˈdeɪʃən/

dilapidation

Meaning
The state of disrepair or ruin as a result of neglect.
Example
The old temple was in a state of dilapidation.
B1 verb /ɪkˈspænd/

expand

Meaning
To increase in size, number, or importance.
Example
The company plans to expand its operations into new markets.
C2 verb /ˈek.stər.peɪt/

extirpate

Meaning
to completely remove or destroy something unwanted
Example
The government launched a program to extirpate corruption from public offices.
C1 adjective /ˈeɪ.mi.ə.bəl/

Amiable

Meaning
friendly and pleasant; good-natured; kind
Example
My neighbor is very amiable and always greets everyone warmly.
B2 adjective ɪkˈsep.ʃən.əl

exceptional

Meaning
Unusually good; outstanding; forming an exception; not typical.
Example
Exceptional talent drives innovation.
C2 noun /ɡrænˈtiː/

grantee

Meaning
A person or organization that receives a grant or benefit.
Example
The grantee must submit a progress report every six months.
C2 adjective /ˈʃɑːpwɔːrn/

shopworn

Meaning
worn or faded from being displayed in a shop; no longer fresh or original
Example
The shopworn shoes were sold at a discount.
B2 noun /ˈklʌstər/

cluster

Meaning
a group of similar things or people positioned close together
Example
The grapes grew in a tight cluster.
C1 noun /ˈvælər/

valor

Meaning
Great courage in the face of danger, especially in battle.
Example
The soldier was honored for his valor during the war.
C2 noun /məˈlæsɪz/

Molasses

Meaning
thick, dark, sweet syrup made from sugar cane
Example
The recipe calls for molasses to give the bread a rich flavor.
B2 noun /kəmˈpliːʃən/

completion

Meaning
the action or process of finishing something
Example
The completion of the project will take another few weeks.
B1 verb /ˈbɔːrdɪŋ/

boarding

Meaning
Getting on or into a ship, aircraft, or other vehicle.
Example
The explorers were boarding the ship at the port.
C1 noun, verb /strænd/

strand

Meaning
Noun: A single thin length of thread, wire, or similar. Verb: To leave someone or something without a way of moving or leaving.
Example
The storm stranded many tourists on the island.
A2 noun /ˈtʃaɪldhʊd/

childhood

Meaning
the period of being a child
Example
She spent her childhood in a small village.
C2 noun /stɛp/

steppe

Meaning
A large flat area of unforested grassland, especially in southeastern Europe or Siberia.
Example
The nomads traveled across the vast steppe with their herds.
C1 adjective /ɪˈrɛvərənt/

irreverent

Meaning
showing a lack of respect for people or things that are usually respected
Example
The comedian’s irreverent jokes offended some of the audience.
C1 verb /siːd/

cede

Meaning
to give up power, territory, or rights to another
Example
The country ceded territory after losing the war.
C1 verb /sərˈmaɪz/

surmise

Meaning
to suppose something is true without having evidence
Example
She surmised that he was not coming to the meeting.
B2 adjective /ʌnˈprɒf.ɪ.tə.bl̩/

Unprofitable

Meaning
not yielding profit or gain; not producing financial benefit
Example
The unprofitable business was forced to close down after three years.
A1 noun /kɑːrd/

card

Meaning
A small, flat piece of stiff paper or thin cardboard used for various purposes, such as identification, greetings, or playing games.
Example
She handed me her business card after the meeting.
C1 noun ˌnæn.oʊ.tekˈnɒl.ə.dʒi

nanotechnology

Meaning
The branch of technology that deals with dimensions and tolerances of less than 100 nanometers.
Example
Nanotechnology is advancing medical treatments.
A2 verb /dɪˈskʌs/

discuss

Meaning
To talk about something with another person or group in detail.
Example
We need to discuss the project before finalizing it.
C1 adjective /ˈʃeɪp.ləs/

Shapeless

Meaning
having no definite or well-defined shape or form
Example
The fog created a shapeless mass in the distance.
B2 adjective /dɪˌveləpˈmentl/

developmental

Meaning
relating to the process of growth or progress
Example
Early childhood is a crucial developmental stage for learning.
B1 noun /ˌrep.rɪˈzen.tə.tɪv/

representative

Meaning
A person chosen or appointed to act or speak for another or others.
Example
The representative addressed critical issues.
A1 noun

Love

A1 conjunction /ænd/

and

Meaning
Used to connect words or sentences that are to be taken jointly.
Example
She bought apples and oranges.
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 adjective kəˈlɒs.əl

Colossal

Meaning
Extremely large, gigantic, enormous in size or extent.
Example
The colossal pyramids of Egypt are a marvel of architecture.
C2 noun /məˈdæliən/

medallion

Meaning
a large medal or decorative piece, often worn as jewelry or used in architecture
Example
She wore a gold medallion around her neck.
C1 noun /rentʃ/

Wrench

Meaning
a tool used for gripping and turning nuts, bolts, or pipes
Example
He used a wrench to tighten the bolt.
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.
C1 noun /ˈʌp.raɪt.nəs/

Uprightness

Meaning
the quality of being honest and morally correct; integrity
Example
His uprightness in business dealings earned him great respect.
C2 verb /ˈɔːltərˌkeɪt/

altercate

Meaning
to argue or dispute angrily or noisily
Example
The neighbors began to altercate over the boundary wall.
C1 noun /səbˈmɜːrdʒəns/

submergence

Meaning
the act or process of being submerged or going underwater
Example
The submergence of coastal areas is a major concern due to rising sea levels.
B2 adjective /fəˈnɒmɪnəl/

phenomenal

Meaning
extraordinary, remarkable, or exceptional in a way that is very impressive
Example
The team achieved phenomenal success in the tournament.
C2 noun /ˈkɔːfər/

coffer

Meaning
A strongbox or small chest for holding valuables, often used metaphorically for funds or financial reserves.
Example
The city's coffers were drained after the costly project.
B2 noun /ˈlæn.tərn/

Lantern

Meaning
a portable lamp with a protective covering, often used outdoors
Example
We carried a lantern during our camping trip.
C1 adverb /ˌɪnsɪˈdɛntəli/

incidentally

Meaning
by the way; used to introduce a remark not directly related to the main subject
Example
Incidentally, did you know that she studied in Paris?
C2 noun /ˈsɛpəlˌtʃər/

Sepulture

Meaning
the act of burying a dead body; burial; a grave or tomb
Example
The ancient king's sepulture was discovered by archaeologists.
B2 noun /ˈkwɔː.tərz/

Quarters

Meaning
living accommodation; lodgings; military housing
Example
The soldiers returned to their quarters after the training exercise.
C1 verb /ˌmɪsɪnˈtɜːrprɪt/

misinterpret

Meaning
to understand or explain something wrongly
Example
He misinterpreted her silence as agreement.
C1 adjective ɪˈluː.sər.i

illusory

Meaning
Based on illusion; not real although seeming to be.
Example
His sense of security was entirely illusory.
C1 noun /ˈkɒz.moʊs/

Cosmos

Meaning
a colorful annual flower with daisy-like blooms and feathery foliage
Example
The cosmos flowers swayed gently in the summer breeze across the meadow.
B2 noun plɒt

plot

Meaning
The main story of a piece of writing, or the series of events that happen in it.
Example
The plot of A Tale of Two Cities is intense and gripping.
C1 noun /ˌdiː.mɑːˈkeɪ.ʃən/

Demarcation

Meaning
the action of fixing the boundary or limits of something; separation or division
Example
The demarcation between public and private land was clearly marked.
C1 verb /ˈkætəˌlaɪz/

catalyze

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

embezzlement

Meaning
The act of dishonestly taking money or property entrusted to one's care.
Example
The accountant was arrested for embezzlement of company funds.
C2 noun /draɪd roʊz ˈpɛtəlz/

Dried Rose Petals

Meaning
dehydrated petals from roses used for culinary and aromatic purposes
Example
The dessert was garnished with dried rose petals.
B1 noun /bloʊ/

Blow

Meaning
a powerful stroke with a hand, weapon, or hard object
Example
The boxer delivered a devastating blow to his opponent.
C1 adjective /ˈræspi/

raspy

Meaning
having a harsh, rough, or grating sound
Example
His raspy voice revealed years of smoking.
C2 noun /ɒmˈnɪpətəns/

omnipotence

Meaning
The quality of having unlimited power or authority.
Example
Many religions describe God’s omnipotence as absolute.
C1 verb /tʃæsˈtaɪz/

chastise

Meaning
to criticize or punish severely
Example
The teacher chastised the student for being late.
C2 adjective /dɪˈskrɛpənt/

discrepant

Meaning
showing a difference or inconsistency
Example
The witnesses gave discrepant accounts of the incident.
B1 verb /stiːl/

steal

Meaning
to take something without permission; to rob
Example
It's wrong to steal from others.
C2 noun /hɜːrˈbɛəriəm/

herbarium

Meaning
A collection of preserved plant specimens and associated data used for scientific study.
Example
The university maintains a large herbarium for research and education.
A1 adverb /fɑːr/

far

Meaning
at, to, or by a great distance
Example
The school is far from my house.
C1 verb /ˈbʌŋɡəl/

bungle

Meaning
To carry out a task clumsily or incompetently.
Example
He bungled the presentation and confused the audience.
B1 noun /ˈsʌb.stəns/

Substance

Meaning
a particular kind of matter with uniform properties; the essential nature of something; material or content
Example
The scientist analyzed the unknown substance in the laboratory.
A2 noun, verb /ʃɒt/

shot

Meaning
a single attempt to hit something, usually with a weapon or a ball
Example
He took a shot at the goal.
C1 noun /ˈvaɪəˌleɪtər/

violator

Meaning
A person who breaks or disregards a law, rule, or agreement.
Example
The police caught the traffic violator at the intersection.
A2 adjective /ˈsep.ər.ət/

Separate

Meaning
distinct; not connected; individual; apart
Example
Please keep your personal and professional lives separate.
A1 noun /wɒnt/

Want

Meaning
lack or shortage of something; poverty or need
Example
There is a want of fresh water in the drought-affected areas.
B1 noun /məˈkænɪk/

mechanic

Meaning
a person who repairs and maintains machines or vehicles
Example
The mechanic fixed the engine in less than an hour.
C2 noun /ˌkʌmˈʌpəns/

comeuppance

Meaning
A deserved punishment or fate; just deserts.
Example
The corrupt official finally got his comeuppance in court.
A1 adjective /raʊnd/

round

Meaning
having a circular shape; shaped like a sphere or disk
Example
The table was round and had a smooth surface.
C1 adjective /ɪmˈpæsəbəl/

impassable

Meaning
Impossible to travel along or over.
Example
The road became impassable after the heavy snowfall.
C2 noun /tʃæf/

Chaff

Meaning
the husks of corn or other seed separated by winnowing; worthless things; light-hearted joking
Example
The farmer separated the wheat from the chaff using traditional methods.
B1 noun /tɑːsk/

task

Meaning
a piece of work or duty to be done
Example
He completed the task before the deadline.
B1 verb /weɪk/

wake

Meaning
to stop sleeping; to become alert
Example
I wake up at 7 AM every morning.
C2 noun /kɪˈrɒpədɪst/

chiropodist

Meaning
A healthcare professional who diagnoses and treats foot problems.
Example
The chiropodist treated her painful corns and calluses.
C1 verb /ˈmʌmbəl/

mumble

Meaning
To speak quietly and not clearly so that words are difficult to understand.
Example
He mumbled an apology before leaving.
A2 noun /nɔɪz/

Noise

Meaning
a sound, especially one that is loud or unpleasant
Example
The noise from the construction site was very disturbing.
C2 noun /maɪˈæzmə/

miasma

Meaning
An unpleasant or unhealthy smell or atmosphere.
Example
A miasma of decay hung over the abandoned house.
C2 adjective /ɪnˈskruːtəbl̩/

inscrutable

Meaning
impossible to understand or interpret
Example
His inscrutable expression made it hard to know what he was thinking.