infiltration
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C1 noun ˌɪn.fɪlˈtreɪ.ʃən

infiltration

Meaning
The process of entering or gaining access to an organization or place surreptitiously.
Example
Cybersecurity prevents infiltration into sensitive data.
A1 interjection /ɑː/

ah

Meaning
used to express realization, surprise, or relief
Example
Ah, now I understand what you mean.
C2 noun /tʊˈriːn/

tureen

Meaning
A large deep dish with a cover, used for serving soups or stews.
Example
She brought the hot soup to the table in a silver tureen.
B2 noun /ɪnˈsɪstəns/

insistence

Meaning
the act of demanding something firmly or repeatedly
Example
At his insistence, we stayed longer.
C2 noun /ˈdʒɒs.stɪk/

Joss-stick

Meaning
a thin stick of incense that is burned for its pleasant smell, especially in religious ceremonies
Example
She lit a joss-stick in the temple during her prayers.
C1 noun /dɪˌpriː.ʃiˈeɪ.ʃən/

depreciation

Meaning
A reduction in the value of an asset with the passage of time, due to wear and tear.
Example
The car's depreciation rate is high after five years.
B2 verb /ˈtɛrəˌfaɪ/

terrify

Meaning
To cause someone to feel extreme fear.
Example
The loud thunder terrified the children.
A2 adjective /ˈpiːs.fəl/

Peaceful

Meaning
free from disturbance; calm and quiet; not involving war or violence
Example
The garden is a peaceful place to relax.
C2 noun /vərˈmɪl.jən/

Vermillion

Meaning
a bright red-orange color; a pigment of this color
Example
The artist used vermillion paint for the sunset.
B2 noun /tʃʌŋk/

chunk

Meaning
a thick or solid piece of something
Example
She cut the cake into large chunks.
B2 adjective /ˈkʌltʃəd/

cultured

Meaning
characterized by refined taste, manners, and education
Example
She is a cultured woman who loves art and literature.
C1 noun /ˈzeɪni/

Zany

Meaning
amusingly unconventional and idiosyncratic; a comical person; foolishly playful
Example
He has a zany sense of humor that makes everyone laugh.
C2 noun /ˈhɜːrmɪtɪdʒ/

hermitage

Meaning
A secluded residence or retreat, often for a hermit or religious recluse.
Example
The monk spent years in a hermitage deep in the forest.
C1 noun /ˈsɪstərn/

cistern

Meaning
A tank or container for storing water, usually for household use.
Example
The old house still had a cistern to collect rainwater.
B2 noun /eɪd/

aide

Meaning
An assistant or helper, especially to an important person.
Example
The senator’s aide organized the meeting with journalists.
C2 verb /ɪmˈpjuːt/

impute

Meaning
to attribute a fault or responsibility to someone
Example
They imputed the company's success to good leadership.
C1 adjective /rɪˈɡrɛtfəl/

regretful

Meaning
feeling or showing sadness or disappointment about something that has happened or been done
Example
She gave him a regretful smile as she turned away.
B2 adjective /ˌdɪp.ləˈmæt.ɪk/

Diplomatic

Meaning
relating to diplomacy; tactful; skilled in managing relationships
Example
She gave a diplomatic answer to avoid offending anyone.
C1 noun /əˌsaɪˈniː/

assignee

Meaning
a person to whom a right or property is legally transferred
Example
The assignee of the contract is responsible for all future obligations.
C1 noun /ˈɪŋklɪŋ/

inkling

Meaning
A slight idea, hint, or suspicion about something.
Example
She had an inkling that he was planning a surprise.
C2 adjective /ˈnjuːmɪnəs/

numinous

Meaning
having a strong spiritual or mysterious quality
Example
The temple had a numinous atmosphere that inspired awe.
C2 noun /məˈlɛvələns/

malevolence

Meaning
The state or condition of being malevolent; having or showing a wish to do evil to others.
Example
His malevolence was clear in the cruel way he treated his rivals.
B2 noun /ˈaɪ.saɪt/

Eyesight

Meaning
the ability to see; vision
Example
Regular eye checkups are important for maintaining good eyesight.
A2 verb /ɪkˈsaɪt/

excite

Meaning
to cause strong feelings of enthusiasm or eagerness
Example
The idea of traveling abroad excites her.
C1 noun /ˈmʌs.tərd siːdz/

Mustard seeds

Meaning
small round seeds from the mustard plant, used as a spice and for making mustard condiment
Example
Mustard seeds are often tempered in hot oil to release their nutty flavor before adding to dishes.
C2 adjective /dʒərˈmeɪn/

germane

Meaning
Relevant and appropriate to the subject being considered.
Example
Her comments were not germane to the discussion.
A2 adjective /kənˈfjuːzd/

confused

Meaning
unable to think clearly; uncertain or puzzled
Example
She felt confused by the complicated instructions.
C1 adjective /iːsˈθɛθɪkəl/

aesthetical

Meaning
concerned with beauty or the appreciation of beauty; related to artistic taste or appearance
Example
The architect focused on the aesthetical balance of the building.
B2 noun /pʌls/

Pulse

Meaning
edible seeds of leguminous plants such as lentils, beans, and peas
Example
Pulses are an excellent source of protein for vegetarians.
A1 noun /ˈmjuːzɪk/

music

Meaning
vocal or instrumental sounds combined to produce harmony, melody, or rhythm
Example
She loves listening to classical music.
B2 verb /pəˈluːt/

pollute

Meaning
to make air, water, or land dirty and harmful to people, animals, and plants
Example
Factories pollute the environment with toxic chemicals.
C1 noun /pəˈrɪm.ɪ.tər/

perimeter

Meaning
the continuous line forming the boundary of a closed geometric figure or area
Example
The soldiers guarded the perimeter of the camp.
C1 adjective /ˌɪndɪˈskrɪmɪnət/

indiscriminate

Meaning
Done without careful judgment; random or haphazard.
Example
The indiscriminate use of pesticides harms the environment.
B1 noun ˈkɒnsept

concept

Meaning
An abstract idea or general notion
Example
The concept of chasing two rabbits teaches focus.
A2 noun /ˈbækɡraʊnd/

Background

Meaning
the circumstances or situation that form the setting; a person's education, experience, or social circumstances
Example
She has a strong background in mathematics and computer science.
A1 adverb /naʊ/

now

Meaning
at the present moment or time
Example
I am studying now.
B2 adjective /bɪˈheɪvjərəl/

behavioral

Meaning
relating to the way a person or animal acts
Example
The psychologist studied the child's behavioral patterns.
B1 adverb /sɪɡˈnɪfɪkəntli/

significantly

Meaning
in a way that is large or important enough to have an effect
Example
The economy has significantly improved over the last decade.
C1 verb /bɪˈriːv/

bereave

Meaning
to deprive someone of a loved one through death
Example
She was bereaved of her husband last year.
C2 noun /ˈkærɪlɒn/

carillon

Meaning
A set of bells played using a keyboard, usually in a tower.
Example
The carillon bells rang across the town square.
B2 noun səˌsteɪ.nəˈbɪl.ɪ.ti

sustainability

Meaning
The ability to be maintained at a certain rate or level; the avoidance of the depletion of natural resources in order to maintain ecological balance.
Example
Sustainability ensures long-term environmental health.
B2 noun; verb /ˈkætəlɒɡ/

catalogue

Meaning
a complete list of items, typically one in alphabetical or systematic order; to make a systematic list of items
Example
The library decided to catalogue all new books digitally.
C1 adjective lɪŋˈɡwɪs.tɪk

linguistic

Meaning
Related to language or linguistics; concerning the scientific study of language.
Example
The AI model learns from linguistic patterns.
B2 noun/verb /kjuː/

cue

Meaning
A signal or prompt for action; to give a signal.
Example
The actor waited for his cue before entering the stage.
C2 adjective /ˌdɛfəˈrɛnʃəl/

deferential

Meaning
Showing or expressing respect and high regard.
Example
He was always deferential toward his teachers.
C2 adjective /pərˈsuːənt/

pursuant

Meaning
in accordance with or following something, especially a law or rule
Example
The decision was made pursuant to the regulations.
B2 noun /ɑːrtʃ/

arch

Meaning
a curved symmetrical structure spanning an opening and typically supporting the weight above it
Example
The ancient arch still stands in the city center.
C1 noun /kwæk/

Quack

Meaning
a person who pretends to be a doctor but has no medical training; the sound a duck makes
Example
People should be careful not to trust medical advice from a quack.
B1 noun /ˌsɪvɪlaɪˈzeɪʃən/

civilization

Meaning
the stage of human social and cultural development and organization considered most advanced
Example
Ancient Egypt is known for its remarkable civilization.
B1 adjective /ˈfɔːrmər/

former

Meaning
Having been previously in a particular role or position.
Example
He is a former president of the association.
B2 noun rɪˈzɪl.i.əns

resilience

Meaning
The ability to recover quickly from difficulties; toughness.
Example
Testing the resilience of wood is crucial.
C2 noun /ˈkɜːrtʃɪf/

kerchief

Meaning
a piece of cloth worn around the head or neck
Example
She wore a red kerchief on her head.
C1 noun /meɪl treɪn/

Mail train

Meaning
a train that carries mail and postal packages
Example
The mail train departs every evening to deliver letters across the country.
C1 adjective /ˌtræn.zətˈlæn.tɪk/

transatlantic

Meaning
crossing or spanning the Atlantic Ocean
Example
They took a transatlantic flight from New York to London.
B2 verb /kreɪv/

crave

Meaning
to have a strong desire for something
Example
She craves adventure and often travels to remote places.
B2 verb, noun /ʃeɪv/

shave

Meaning
To remove hair from the body, typically using a razor; the act of removing hair
Example
He likes to shave every morning before work.
C1 noun /ˈvenɪsən/

Venison

Meaning
meat from a deer used as food
Example
The restaurant serves delicious venison steaks.
A2 adjective /ˈnɜː.vəs/

Nervous

Meaning
feeling anxious or worried; relating to the nerves; easily agitated
Example
She felt nervous before her job interview.
A2 noun /ˈsiːkrət/

secret

Meaning
something that is kept or meant to be kept unknown or unseen by others
Example
He told me a secret about his childhood.
C1 adjective /ˈkæn.dɪd/

Candid

Meaning
truthful and straightforward; frank and honest in expression
Example
I appreciate your candid opinion about the project.
B2 noun /məˈstɑːʃ/

Moustache

Meaning
hair that grows on the upper lip of men
Example
He grew a thick moustache for the play.
B2 noun /ɡreɪv/

Grave

Meaning
a hole dug in the ground to receive a coffin; a place of burial; serious or solemn
Example
The family visited the grave of their beloved grandfather every Sunday.
B1 noun ˈtʊə.nə.mənt

tournament

Meaning
A series of contests between a number of competitors, competing for an overall prize.
Example
The tournament showcased exceptional talent.
B1 adjective /trɪˈmendəs/

Tremendous

Meaning
extremely large, great, or intense; extraordinary
Example
She made tremendous progress in her studies.
B2 adverb /ˈfeɪθ.fəl.i/

Faithfully

Meaning
in a loyal and steadfast manner; with dedication
Example
She faithfully attended every meeting despite her busy schedule.
B2 adjective /ˈsæv.ɪdʒ/

Savage

Meaning
extremely cruel or violent; wild and fierce; uncivilized
Example
The savage attack shocked everyone.
C1 noun /ˈweɪ.stɪdʒ/

Wastage

Meaning
the action of using or expending something carelessly or without purpose
Example
The company reduced food wastage by implementing better inventory management.
C2 noun /kənˈtjuː.ʒən/

contusion

Meaning
a bruise or injury without breaking the skin
Example
The boxer had several contusions after the match.
A2 adjective /ˈkreɪzi/

Crazy

Meaning
mentally ill; extremely foolish; wildly enthusiastic about something
Example
That's a crazy idea, but it might just work.
C1 noun /ˈwaɪt.lɪst.ɪŋ/

whitelisting

Meaning
Identifying specific users, software, or IP addresses as safe and trusted
Example
Only verified applications are allowed through whitelisting.
C1 adjective /ɪnˈstɪŋk.tɪv/

instinctive

Meaning
Based on instinct; done without conscious thought; natural and automatic.
Example
His instinctive reaction saved his life.
C2 adjective /dɪsˈkʌmfɪtɪŋ/

discomfiting

Meaning
Causing unease, embarrassment, or discomfort.
Example
His discomfiting questions made everyone shift uncomfortably in their seats.
B2 noun/verb /ˈaʊtreɪdʒ/

outrage

Meaning
A strong feeling of anger and shock; to arouse anger or shock.
Example
The unfair decision caused public outrage.
C2 noun /ˈæn.oʊd/

anode

Meaning
The positive electrode in a device such as a battery, where current flows into a polarized electrical device.
Example
The anode of the battery was corroded after long use.
B2 verb /ˌkɒn.trəˈdɪkt/

contradict

Meaning
to say or show the opposite of something that has been said or believed
Example
His actions contradict his words.
B1 verb ɪkˈspændɪd

expanded

Meaning
Made or become larger or more extensive.
Example
Expanded opportunities in education can transform lives.
B2 noun /ˈprɛdətər/

predator

Meaning
An animal that hunts and kills other animals for food.
Example
Lions are powerful predators in the savannah.
C1 adjective /prɪm/

prim

Meaning
stiffly formal and proper in appearance or behavior
Example
She looked prim in her neatly pressed dress.
C2 noun /ˈmɒnəɡræm/

monogram

Meaning
A design consisting of two or more letters, typically a person's initials, combined or interwoven.
Example
The towel was embroidered with her monogram.
C1 noun ˌæɡ.rəʊˈkem.ɪ.kəl

agrochemical

Meaning
A chemical product used in agriculture, especially a pesticide or fertilizer.
Example
Excessive use of agrochemicals can degrade soil quality.
B1 verb ɪnˈvɛst

invest

Meaning
To put money, effort, time, etc. into something to make a profit or get an advantage.
Example
Investing in intellectual property can generate passive income.
B2 noun, adjective, adverb /ˌnɔːrθˈwest/

northwest

Meaning
the direction that is between north and west; situated in or moving toward this direction
Example
Seattle is located in the northwest of the United States.
B1 adjective /skɪld/

Skilled

Meaning
having or showing the knowledge, ability, or training to perform certain activities or work well
Example
He is a skilled carpenter who can build beautiful furniture.
C1 adjective /ˈvɪskəs/

viscous

Meaning
Having a thick, sticky consistency between solid and liquid.
Example
Honey is a viscous liquid that flows slowly.
C2 verb /əˈɡriːv/

aggrieve

Meaning
to cause distress or make someone feel resentful
Example
She felt aggrieved by the unfair decision.
C2 noun /ɪnˈtriːti/

entreaty

Meaning
An earnest or humble request or plea.
Example
She made an entreaty for peace during the heated argument.
C1 verb /ɛtʃ/

etch

Meaning
to cut or carve a design onto a surface
Example
The artist etched her initials into the glass.
C1 noun /dɪˌnʌnsiˈeɪʃən/

denunciation

Meaning
the public condemnation or accusation of someone or something
Example
The journalist's article was a strong denunciation of corruption.
C1 adjective /ˈrek.wɪ.zɪt/

Requisite

Meaning
made necessary by particular circumstances; required
Example
Good communication skills are requisite for this job.
B1 noun /ˈkwaɪər/

choir

Meaning
An organized group of singers, typically performing in church services or concerts.
Example
The choir sang beautifully during the ceremony.
A1 adjective /twɛlv/

twelve

Meaning
the number equivalent to 12
Example
There are twelve months in a year.
C2 adjective /ˈfrɒθi/

frothy

Meaning
Full of or covered with small bubbles; light and insubstantial.
Example
She ordered a cup of frothy cappuccino.
C1 noun /wɪm/

whim

Meaning
a sudden or unpredictable idea, desire, or decision
Example
She bought the dress on a whim.
C1 adjective /ʌnˈspiːkəbl/

unspeakable

Meaning
too bad or shocking to be expressed in words
Example
The survivors endured unspeakable horrors during the war.
C1 noun /ɪnˈkɒmpɪtəns/

incompetence

Meaning
Lack of ability, skill, or effectiveness in doing something.
Example
The project failed due to the manager’s incompetence.
C2 adjective /ˌsuː.pər.ɪˈrɑː.ɡə.tɔːr.i/

supererogatory

Meaning
Going beyond what is required or expected; more than necessary.
Example
His donation was supererogatory, far beyond what anyone had asked for.
C1 adjective /rɪˈdʒɛn.ə.rə.tɪv/

regenerative

Meaning
Able to restore or renew damaged environments, soil, or resources.
Example
Regenerative farming improves soil health and biodiversity.
A2 pronoun /ˈnoʊˌbɑːdi/

nobody

Meaning
no person; not anyone
Example
Nobody came to the party.
C1 adjective /ˌrɛprɪzɛnˈteɪʃənl̩/

representational

Meaning
Relating to or depicting something in a realistic or symbolic way.
Example
The artist preferred a representational style of painting.
B2 noun pərˈsɛpʃən

perception

Meaning
The ability to see, hear, or become aware of something through the senses
Example
Our perception of the situation was shaped by our prior experiences.
C2 adjective /kəmˈprɛsəbl̩/

compressible

Meaning
Capable of being compressed or reduced in volume.
Example
Air is a compressible substance, unlike water.
B2 verb /ˈstreɪtən/

straighten

Meaning
to make something straight or tidy; to correct or organize
Example
She straightened her hair before the meeting.
B1 noun /pəˈlɪtɪʃən/

politician

Meaning
a person who is involved in politics, especially as a profession
Example
The politician promised to improve the economy.
A1 noun /stɑːr/

Star

Meaning
a fixed luminous point in the night sky that produces light and heat through nuclear fusion
Example
Thousands of stars are visible in the clear night sky.
C2 noun, verb /ˈtræməl/

trammel

Meaning
A restriction or impediment to freedom of action; to restrict.
Example
The strict rules trammel the creativity of the students.
A2 adjective /ˈmɛsi/

messy

Meaning
untidy or dirty; disorganized or chaotic
Example
His room was so messy that he couldn’t find his keys.
C1 adjective /ˈtɪərfəl/

Tearful

Meaning
expressing or showing sadness and sorrow; inclined to weep
Example
She gave a tearful goodbye to her friends at the airport.
C2 noun /bəˈnæləti/

banality

Meaning
The condition of being unoriginal, boring, or obvious; trite remark or quality.
Example
The speech was criticized for its banality and lack of originality.
C1 verb, noun /læɡ/

lag

Meaning
To fall behind in movement, progress, or development; a delay or period of falling behind.
Example
The old computer tends to lag when running new software.
B2 noun/adjective /ˈlætɪn/

latin

Meaning
the language of ancient Rome; relating to Latin culture or language
Example
Many English words are derived from Latin.
C1 noun, adjective, verb /səˈbɔːrdənət/ (noun/adjective), /səˈbɔːrdəˌneɪt/ (verb)

subordinate

Meaning
lower in rank or position; to treat as less important
Example
He manages ten subordinates in his department.
C1 adjective /ˈsɒmbər/

somber

Meaning
Dark or dull in color or tone; gloomy or serious.
Example
The funeral had a somber atmosphere.
C2 noun/verb /sluːs/

sluice

Meaning
A sliding gate for controlling the flow of water; to wash or rinse with water in large quantities.
Example
The workers sluiced the mud off the street after the heavy rain.
C2 adjective /ˈræŋ.kər.əs/

rancorous

Meaning
Characterized by bitterness or resentment.
Example
Their rancorous debate lasted for hours.
C1 adjective ˈsɒvrɪn

sovereign

Meaning
Possessing supreme or ultimate power; independent.
Example
The sovereign government has control over its currency.
C2 noun /ˌbeɪt ˈnwɑːr/

bete noire

Meaning
A person or thing that one particularly dislikes or fears.
Example
Grammar has always been his bete noire.
C1 noun /ɡəˈzet/

Gazette

Meaning
an official journal or newspaper, especially one published by an organization or government
Example
The promotion was officially announced in the government gazette last week.
A1 adverb /əˈɡoʊ/

ago

Meaning
Used to indicate how long before the present something happened.
Example
I met her two years ago.
B2 noun/verb /ˈfɒs.tər.ɪŋ/

fostering

Meaning
The process of encouraging or promoting the development or growth of something; nurturing and caring for.
Example
Good teachers play a key role in fostering creativity in students.
C1 noun /ˈɑːlɪˌɡɑːrki/

oligarchy

Meaning
A small group of people having control of a country, organization, or institution.
Example
The nation was ruled by a wealthy oligarchy that controlled all resources.
C1 adjective /ˈsiː.naɪl/

senile

Meaning
Showing the weaknesses of old age, especially mental decline.
Example
The old man became senile and forgot familiar faces.