perturbation
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C2 noun /ˌpɜːrtərˈbeɪʃn/

perturbation

Meaning
A state of anxiety, disturbance, or disorder.
Example
The announcement caused a perturbation in the financial markets.
B2 verb /fliː/

flee

Meaning
To run away from danger or a threatening situation.
Example
The villagers had to flee during the flood.
C2 noun /ˌpæl.ənˈkiːn/

Palanquin

Meaning
a covered chair or bed carried on poles by bearers
Example
The bride was carried to the wedding ceremony in an ornate palanquin.
C2 noun /ɛmˈpɪrɪˌsɪzəm/

empiricism

Meaning
the theory that all knowledge is derived from sense-experience
Example
Empiricism argues that knowledge comes from experience and observation.
B2 noun /ˈsɛnsər/

sensor

Meaning
a device that detects or measures a physical property and records, indicates, or responds to it
Example
The motion sensor turned on the light automatically.
A1 pronoun /juː/

you

Meaning
used to refer to the person or people being spoken to
Example
You are doing a great job!
C1 noun /kəˈnʌn.drəm/

conundrum

Meaning
A complex problem or puzzle without an easy solution
Example
The ethical conundrum puzzled the researchers.
B2 noun /ˈhɛdˌkwɔːrtərz/

headquarters

Meaning
The main office or center of operations of an organization.
Example
The company’s headquarters is located in New York.
B2 verb /ˈælaɪ/

ally

Meaning
To unite or form a connection or partnership with another person, group, or nation.
Example
The two countries decided to ally against their common enemy.
C1 adjective ˈkɒn.təm.plə.tɪv

contemplative

Meaning
Expressing or involving prolonged thought; meditative and reflective.
Example
He spent a contemplative evening reflecting on his decisions.
C1 noun /dɪˈkriː/

Decree

Meaning
an official order issued by a legal authority; a judicial decision or edict
Example
The king issued a decree that all citizens must pay additional taxes.
C1 noun /ˌpeɪ.li.ɒnˈtɒl.ə.dʒi/

paleontology

Meaning
the branch of science concerned with fossil animals and plants
Example
She decided to study paleontology at university.
C1 noun /kɔːrs flaʊər/

Course flour

Meaning
coarsely ground flour with larger particles, typically used for baking bread
Example
She used course flour to make homemade bread with a rustic texture.
C2 adjective /ˈpjuːɪsənt/

puissant

Meaning
having great power or influence; mighty
Example
The king was a puissant ruler whose word was law.
C1 adjective, noun /ˈmɑːrʃən/

martian

Meaning
Related to the planet Mars; or an imaginary being from Mars.
Example
The movie showed a Martian visiting Earth.
B1 adverb /ˈmeɪn.li/

Mainly

Meaning
for the most part; chiefly; primarily
Example
The conference was mainly about environmental protection and climate change.
C2 noun

Kinsfolk

B2 noun /məˈkænɪks/

mechanics

Meaning
the branch of physics concerned with the motion of objects and the forces acting on them; also refers to the practical details of how something works
Example
He studied the mechanics of the machine before fixing it.
B2 noun /ˈrɒbər/

robber

Meaning
a person who steals property from others, often using force or threat
Example
The robber was caught after a quick police chase.
C2 adjective /ˈtriːzənəbl/

treasonable

Meaning
Relating to or involving the crime of treason.
Example
The general was accused of treasonable conduct.
C1 noun /ɪnˈsek.tɪ.saɪd/

Insecticide

Meaning
a substance used for killing insects; a chemical pesticide that targets insects
Example
The farmer sprayed insecticide on his crops to protect them from harmful bugs.
C1 noun /bɪˈriːvmənt/

bereavement

Meaning
The state of having lost a loved one through death.
Example
She received many letters of sympathy during her time of bereavement.
B2 noun /rɪˈvendʒ/

Revenge

Meaning
the action of inflicting hurt or harm on someone for an injury or wrong suffered at their hands
Example
She sought revenge against those who betrayed her trust.
C1 noun /ˈkʌn.stə.bəl/

constable

Meaning
a police officer of the lowest rank
Example
The constable directed traffic at the busy intersection.
C1 adjective /dɪsˈrɛpjətəbl̩/

disreputable

Meaning
having a bad reputation; not considered respectable or trustworthy
Example
The journalist avoided staying in the disreputable part of town.
C1 verb /dɪsˈfɪɡjər/

disfigure

Meaning
to spoil or damage the appearance of something
Example
The fire disfigured the old building.
B2 adjective /sə'spɪʃ.əs/

Suspicious

Meaning
having or showing distrust; doubtful; questionable
Example
The police found his behavior very suspicious.
A1 noun /ɡaɪ/

guy

Meaning
an informal term for a man; sometimes used to refer to a person in general
Example
That guy over there is my best friend.
B1 noun /ˈkændɪdeɪt/

candidate

Meaning
A person who applies for a job or is nominated for election.
Example
The candidate gave a strong speech during the debate.
B1 noun /ˈprəʊ.tiːnz/

proteins

Meaning
Large biomolecules consisting of amino acids that perform essential functions in living organisms, including building and repairing tissues.
Example
Lean meats and legumes provide high-quality proteins.
C2 adjective /ˌstætʃuˈɛsk/

statuesque

Meaning
Having the grace, beauty, or dignity of a statue; tall and attractively proportioned.
Example
She had a statuesque figure that turned heads wherever she went.
C1 verb /ˌrekəˈlekt/

recollect

Meaning
to remember something; to recall from memory
Example
I can't recollect where I put my keys.
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.
B2 noun /ˈkʊriər/

courier

Meaning
a person or company that delivers messages, packages, or mail
Example
The courier delivered the documents on time.
B2 noun /kəˈlɑːʒ/

collage

Meaning
A piece of art made by sticking various materials such as photographs or paper onto a surface.
Example
She created a collage using old magazine pictures.
B2 noun /ˈbæŋkrʌpt/

Bankrupt

Meaning
a person unable to pay debts; having no money; completely lacking in something
Example
The company went bankrupt after years of poor financial management.
C2 noun /ˈmɒnəɡrɑːf/

monograph

Meaning
A detailed written study of a single specialized subject or aspect of it.
Example
The professor published a monograph on ancient pottery.
C1 noun /ɑːˌtɪkjʊˈleɪʃən/

articulation

Meaning
The action of putting into words an idea or feeling of a specified type.
Example
His articulation during the debate impressed everyone.
C2 noun /flɛk/

fleck

Meaning
a small spot or mark, often of a different color
Example
There was a fleck of paint on the floor.
C1 noun /ˌoʊvərprəˈdʌkʃən/

overproduction

Meaning
The act of producing more of something than is needed or can be consumed.
Example
The economic crisis was caused by the overproduction of goods.
C1 noun /ˈliːdʒən/

legion

Meaning
a large group of people, especially soldiers; a great number
Example
The Roman army was divided into legions.
A2 adjective /ˈprɒpər/

proper

Meaning
conforming to accepted standards of behavior or morality
Example
He made sure to wear proper attire for the interview.
A1 noun /praɪs/

price

Meaning
the amount of money expected, required, or given for something
Example
The price of the car has increased recently.
C1 adjective /ɪmˈpɜːrsənl/

impersonal

Meaning
not influenced by, showing, or involving personal feelings; lacking human warmth or emotion
Example
The letter was written in a very impersonal style.
A2 adjective ˈpɒzətɪv

positive

Meaning
Having an electric charge opposite to that of an electron.
Example
Protons have a positive charge.
C1 adjective /ˈperɪɡrɪn/

Peregrine

Meaning
wandering; traveling; migratory
Example
The peregrine falcon is known for its incredible speed.
C1 noun ˌkɒn.əˈteɪ.ʃən

connotation

Meaning
The implied or suggested meaning of a word beyond its literal definition
Example
The word 'home' has a warm connotation of comfort and family.
B2 adjective ˈtaɪmləs

timeless

Meaning
Not affected by the passage of time or changes in fashion.
Example
The timeless beauty of the painting has captivated art lovers for generations.
C1 adjective ˌɪn.krəˈmen.təl

incremental

Meaning
Relating to or denoting an increase or addition, especially one of a series on a fixed scale; proceeding in small stages.
Example
Incremental changes ensure sustainability.
C2 adjective /bɪˈsɒtɪd/

besotted

Meaning
strongly infatuated or obsessed with someone or something
Example
He was completely besotted with her charm.
B1 verb /pɔːr/

pour

Meaning
to flow or cause to flow in a steady stream; to rain heavily
Example
Please pour the water into the glass carefully.
C1 verb ˈsɪŋ.krə.naɪz

synchronize

Meaning
To coordinate in time; to cause to occur or operate at the same time or rate.
Example
The dancers need to synchronize their movements.
B2 noun /ˈʃɔːrt.kʌm.ɪŋ/

Shortcoming

Meaning
a fault or failure to meet a certain standard; a deficiency
Example
Despite his many talents, he has some shortcomings.
C1 noun /mɪˈlɪʃə/

militia

Meaning
a group of ordinary people who are trained to act as soldiers in emergencies
Example
The village formed a militia to defend against attacks.
C2 adjective /ˈtrɛntʃənt/

trenchant

Meaning
expressed strongly, effectively, and clearly; sharp or cutting in style or expression
Example
Her trenchant criticism of the policy left no room for misunderstanding.
C2 noun /ˈplɛdʒɔːr/

pledgeor

Meaning
a person who gives or offers a pledge or security
Example
The bank accepted the jewelry from the pledgeor as collateral for the loan.
C2 noun, adjective, verb /ˈrɛprəˌbeɪt/

reprobate

Meaning
A person of immoral character; to express disapproval of; morally corrupt.
Example
The old reprobate spent his days gambling and drinking.
B1 adjective /ˌwel bɪˈheɪvd/

Well-behaved

Meaning
conducting oneself in a proper and polite manner; showing good manners
Example
The children were well-behaved during the ceremony.
C2 adjective /ˈnjuː.mər.ə.bəl/

Numerable

Meaning
capable of being counted; countable
Example
The stars in the sky are not numerable.
C1 adjective /ˈtɜːrnkiː/

turnkey

Meaning
ready for immediate use; a complete product or solution
Example
The company provides turnkey solutions for small businesses.
C1 noun səˈsteɪnəbəl ˈpræktɪsɪz

sustainable practices

Meaning
Methods and activities that can be maintained over time without depleting natural resources or harming the environment.
Example
Sustainable practices are vital for environmental preservation.
C1 verb /zæɡ/

zag

Meaning
to make a sharp change in direction, especially in a zigzag pattern
Example
The rabbit zagged quickly to escape the fox.
A1 noun /dɪˈsɛmbər/

december

Meaning
the twelfth and last month of the year in the Gregorian calendar
Example
December is usually cold in many countries.
C1 noun /ˈmelənkəli/

Melancholy

Meaning
A feeling of pensive sadness; thoughtful or gentle sadness
Example
A deep melancholy settled over him after reading the old letters.
C2 noun /ˌser.əˈbreɪ.ʃən/

cerebration

Meaning
the process of thinking or using the brain actively
Example
The lecture sparked intense cerebration among the students.
C1 adjective /ˈɛərˌtaɪt/

airtight

Meaning
Completely sealed so that no air can get in or out.
Example
Store the cookies in an airtight container to keep them fresh.
C1 noun /njʊəˈrəʊ.sɪs/

neurosis

Meaning
A relatively mild mental illness that is not caused by organic disease, involving symptoms of stress.
Example
His neurosis made social interactions difficult.
B2 noun /dʒɜːm/

germ

Meaning
a microscopic organism, especially one that causes disease
Example
Washing your hands helps prevent the spread of germs.
B2 noun /ˌdel.ɪˈɡeɪ.ʃən/

delegation

Meaning
A group of people chosen to represent others in negotiations or discussions.
Example
The delegation presented their country's agenda.
C1 adjective /ˈpriːmə/

prima

Meaning
first or most important; excellent
Example
She was treated as the prima ballerina of the troupe.
B2 noun /ˈfleɪ.vər/

Flavour

Meaning
the distinctive taste of a food or drink; a particular quality or atmosphere
Example
The soup had a rich flavour of herbs and spices from the garden.
C1 adjective /ˈdʒɑː.rɪŋ/

jarring

Meaning
Striking or shocking in a way that creates a strong contrast or clash.
Example
The sudden loud noise was jarring to everyone in the room.
A2 noun /ˈwɪnər/

winner

Meaning
a person who wins a competition or contest
Example
She was the winner of the race.
A2 noun /ˈdɑrk.nəs/

Darkness

Meaning
the partial or total absence of light; wickedness or evil; ignorance or lack of knowledge
Example
The power outage plunged the entire city into darkness.
C1 adjective /ˈvæljənt/

Valiant

Meaning
showing courage or determination; brave and heroic
Example
The valiant soldier fought bravely to protect his country.
B2 noun /ˈwʊd.pek.ər/

Woodpecker

Meaning
a bird that pecks at tree bark to find insects and create nesting holes
Example
The woodpecker hammered against the oak tree.
C2 verb /fɔrˈswɛr/

forswear

Meaning
to renounce or reject; to give up completely
Example
He forswore his old habits and started a new life.
C2 adjective /veɪnˈɡlɔːriəs/

vainglorious

Meaning
Excessively proud of oneself or one’s achievements; boastful.
Example
The vainglorious leader boasted about his minor achievements.
C2 verb /læmˈbæst/

lambast

Meaning
To criticize harshly or to beat severely.
Example
The coach lambasted the team for their poor performance.
B1 noun /dɪˈstrʌk.ʃən/

Destruction

Meaning
the action or process of causing damage to something so that it no longer exists
Example
The earthquake caused widespread destruction throughout the entire city.
C2 adjective /ˈnʌpʃəl/

nuptial

Meaning
Relating to marriage or weddings.
Example
The couple prepared for their nuptial ceremony with great joy.
C2 noun /ˈkloʊðiər/

clothier

Meaning
a person or company that makes, sells, or deals in clothes.
Example
The town’s clothier displayed fine suits in his shop window.
C1 adjective /ˌtræn.senˈdɛn.təl/

transcendental

Meaning
relating to the spiritual or non-physical realm; surpassing ordinary experience
Example
Meditation can lead to transcendental experiences.
A2 adjective /kjuːt/

cute

Meaning
attractive in a pretty or endearing way
Example
That puppy is so cute!
B2 noun /red liːf/

Red leaf

Meaning
red-colored leafy vegetable; amaranth leaves used as greens
Example
Red leaf is rich in iron and is commonly eaten in Bengali households.
C2 adjective /səˈleɪʃəs/

salacious

Meaning
Having or conveying undue or inappropriate sexual interest.
Example
The tabloid published a salacious story about the celebrity.
B2 noun speɪs ɪksplɔːˈreɪʃən

space exploration

Meaning
The investigation of outer space by means of manned and unmanned spacecraft.
Example
Space exploration has expanded our knowledge of the universe.
B1 noun /dəˈrɛktər/ or /daɪˈrɛktər/

director

Meaning
a person who manages or oversees a company, department, or film
Example
The director gave final approval for the new movie script.
C2 noun /dɪˈmʌrɪdʒ/

demurrage

Meaning
a charge payable to the owner of a ship or vehicle for not loading or unloading on time
Example
The company had to pay demurrage for delaying the unloading of goods.
C1 noun /ˈleɪ.mən/

Layman

Meaning
a person without professional or specialized knowledge in a particular subject
Example
The doctor explained the procedure in layman's terms.
B2 adjective /ˈsɛksi/

sexy

Meaning
sexually attractive or exciting
Example
She wore a sexy red dress to the party.
C2 verb /əbˈhɔːr/

abhor

Meaning
to regard with disgust and hatred
Example
She abhors cruelty to animals.
B2 noun /dɪˈkeɪ/

Decay

Meaning
the process of rotting or decomposing; gradual decline or deterioration
Example
The old building showed signs of decay after years of neglect.
B2 noun /ˈæŋkər/

Anchor

Meaning
a heavy object used to moor a vessel to the sea bottom; a person or thing that provides stability or confidence
Example
The ship dropped its anchor in the harbor.
C1 noun /rɪˈvɒl.vər/

Revolver

Meaning
a pistol with revolving chambers enabling several shots to be fired without reloading
Example
The detective drew his revolver from its holster.
B2 noun /ˈfrʌn.tɪər/

frontier

Meaning
A new area of activity, knowledge, or development; the edge of knowledge or achievement.
Example
Robotic surgery is exploring a new frontier in medicine.
B2 noun /ˈɡʌv.ən.əns/

governance

Meaning
The action or manner of governing and controlling a state or organization.
Example
Effective governance ensures sustainable development.
B2 adjective /ˈstaɪ.lɪʃ/

Stylish

Meaning
fashionable and attractive; having elegance or taste in appearance
Example
She wore a stylish dress to the party.
C1 verb /niːd/

knead

Meaning
to work dough or clay into a uniform mixture by pressing, folding, and stretching
Example
She kneads the dough until it becomes smooth.
C2 noun /ɪmˈpjuːnɪti/

impunity

Meaning
freedom from punishment or harmful consequences for an action
Example
The dictator ruled with impunity, ignoring international laws.
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.
A1 noun /ˈtjuːzdeɪ/

tuesday

Meaning
The second day of the week, following Monday and preceding Wednesday.
Example
We have a meeting scheduled for Tuesday.
B2 verb /ɪˈvækjueɪt/

evacuate

Meaning
To remove people from a dangerous place to safety.
Example
The residents were ordered to evacuate the building after the fire alarm.
B2 noun /ˈprɒbləm ˈsɒlvɪŋ/

problem-solving

Meaning
The process of finding solutions to difficult or complex issues.
Example
Problem-solving skills are key to leadership.
C2 noun /ˈkæθoʊd/

cathode

Meaning
The negative electrode in a device such as a battery or tube, where electrons enter.
Example
The cathode emits electrons in the tube.
A2 noun /ˈæroʊ/

arrow

Meaning
a thin, straight weapon with a pointed tip, shot from a bow
Example
The hunter shot an arrow at the target.
B2 noun/adjective /ˈbʌmpər/

bumper

Meaning
A protective bar at the front or back of a vehicle; also used to describe something unusually large or successful.
Example
The farmer celebrated a bumper harvest this year.
A2 verb /heɪt/

hate

Meaning
to feel intense dislike or aversion for someone or something
Example
I hate waiting in long lines.
A2 adjective /ˈrɪtən/

written

Meaning
expressed in writing rather than spoken; composed or recorded in written form
Example
The agreement must be in written form to be valid.
C2 adjective /ˈdʒɒkənd/

jocund

Meaning
cheerful and lighthearted
Example
They walked together in a jocund mood after the celebration.
A2 pronoun /huːm/

whom

Meaning
used to refer to the person or people that something is done to
Example
The man whom I met yesterday is my friend.
B2 adverb /ˈænjuəli/

annually

Meaning
once every year; yearly
Example
The company holds a general meeting annually.
B2 adverb juːˈnæn.ɪ.məs.li

unanimously

Meaning
With the agreement of all people involved; without opposition.
Example
The proposal was unanimously accepted.
C1 noun /ˌəʊvərɪksˌplɔɪˈteɪʃən/

overexploitation

Meaning
The unsustainable use of natural resources at a rate that exceeds their ability to regenerate, leading to depletion and environmental degradation.
Example
Overexploitation of natural resources leads to environmental degradation.
C1 adjective /ˈsliːzi/

sleazy

Meaning
morally low, dirty, or cheap in quality
Example
He avoided the sleazy nightclub downtown.
B2 adjective /hɪˈstɛrɪkəl/

hysterical

Meaning
Extremely funny or uncontrollably emotional.
Example
The comedian's jokes were absolutely hysterical.
A1 noun /ˈprɒb.ləm/

Problem

Meaning
a situation that causes difficulties and needs to be dealt with or solved
Example
We need to solve this problem quickly.
C2 verb /ˈprætəl/

prattle

Meaning
to talk at length in a foolish or inconsequential way
Example
The children would prattle on about their games.
A2 adjective /ʌnˈlʌki/

Unlucky

Meaning
having bad luck; unfortunate
Example
He was unlucky to miss the winning shot.
C2 adjective /ˈvɪndɪkeɪtɪv/

vindicative

Meaning
showing a tendency to vindicate or justify; inclined to defend
Example
Her vindicative tone showed that she strongly believed in her innocence.
B2 noun /ˈɡlɑːs.weər/

Glass-ware

Meaning
objects made of glass, especially drinking glasses and decorative objects
Example
The wedding registry included fine glassware.