subterranean
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C1 adjective /ˌsʌb.təˈreɪ.ni.ən/

subterranean

Meaning
Existing, occurring, or done under the earth's surface.
Example
Subterranean water sources help sustain agriculture.
C2 adjective /ˈbɛərˌfeɪst/

barefaced

Meaning
shameless and undisguised; openly bold or unashamed
Example
He told a barefaced lie in front of everyone.
C2 noun/verb /ˈkɜːrtsi/

curtsy

Meaning
a respectful bow made by women by bending the knees with one foot in front of the other
Example
She gave a quick curtsy before leaving the stage.
A2 adjective, adverb, interjection /ɔːlˈraɪt/

alright

Meaning
satisfactory or acceptable; safe or unharmed; used to express agreement or acknowledgment
Example
Everything is going to be alright.
B2 noun ˌæn.tiˈɒk.sɪ.dənt

antioxidant

Meaning
A substance that may prevent or delay some types of cell damage by neutralizing free radicals.
Example
Green tea contains powerful antioxidants that slow aging.
B2 verb /bɪˈfrɛnd/

befriend

Meaning
to act as a friend to someone; to make friends with
Example
She befriended the new student at school.
B2 adjective /ʌnˈiːvən/

Uneven

Meaning
not level or smooth; not regular or consistent
Example
The road was uneven and full of potholes.
A1 noun /ˈpɛnsəl/

pencil

Meaning
an instrument for writing or drawing, typically made of wood with a graphite core
Example
He drew a picture with a pencil.
C1 noun /ˈkælkjʊləs/

calculus

Meaning
A branch of mathematics concerned with rates of change and accumulation; also a hard mineral deposit in the body such as on teeth.
Example
Calculus is essential for advanced studies in physics and engineering.
B2 noun /ˈpɑːs.tʃər/

Posture

Meaning
the position in which someone holds their body; a particular attitude or approach
Example
Good posture is important for preventing back pain.
C2 adjective /ˈpɛneɪt/

pennate

Meaning
Having parts or structures arranged like a feather; feather-shaped.
Example
The fern has a pennate leaf structure.
B1 noun ɪnˈtel.ɪ.dʒəns

intelligence

Meaning
The ability to learn, understand, and think in a logical way about things
Example
Intelligence is key in AI development.
C1 adjective /kəˈθɑːr.tɪk/

cathartic

Meaning
Providing psychological relief through the open expression of strong emotions.
Example
Writing about emotions can be a cathartic experience.
C1 verb /dɪsˈpærɪdʒ/

disparage

Meaning
to criticize someone or something in a way that shows a lack of respect
Example
It is unfair to disparage people for their opinions.
C1 noun /ˈskep.tɪ.sɪ.zəm/

skepticism

Meaning
A skeptical attitude; doubt as to the truth of something.
Example
His skepticism about new technology often makes him resistant to change.
A1 verb /fərˈɡet/

forget

Meaning
to be unable to remember something; to fail to bring something to mind
Example
Don't forget to lock the door when you leave.
B1 noun /ˈpʌblɪʃɪŋ/

publishing

Meaning
the business or activity of preparing and issuing books, journals, or other material for sale
Example
He works in the publishing industry as an editor.
C2 noun /ɪˈreɪdiəns/

irradiance

Meaning
the quality of shining brightly; the intensity of light falling on a surface
Example
The irradiance of the sun at noon was overwhelming.
C1 noun /ˈpɑːr.keɪ/

parquet

Meaning
A floor made of wooden blocks arranged in a geometric pattern.
Example
The old mansion had a beautiful parquet floor.
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.
C2 noun /əˌbɑː.məˈneɪ.ʃən/

abomination

Meaning
a thing that causes disgust or hatred
Example
Slavery was considered an abomination.
C1 noun /pəˈpaɪrəs/

papyrus

Meaning
An ancient writing material made from the pith of the papyrus plant; also refers to the plant itself.
Example
The ancient scroll was written on papyrus.
C2 noun /ˈjoʊkəl/

yokel

Meaning
An uneducated and unsophisticated person from the countryside; a bumpkin.
Example
The city folks laughed at the yokel's simple ways.
C1 noun /ˈɛspiənɑːʒ/

espionage

Meaning
The practice of spying or using spies to gather secret information, usually for political or military purposes.
Example
The agent was arrested on charges of espionage against the state.
C1 verb /dʒæb/

jab

Meaning
To poke or thrust quickly, often with a finger or something pointed.
Example
He jabbed his finger at the map to show the location.
C2 noun /spɪˈlʌŋkər/

spelunker

Meaning
A person who explores caves as a hobby.
Example
The spelunker carried ropes and lights into the dark cave.
A1 adjective /taɪəd/

Tired

Meaning
feeling exhausted; in need of sleep or rest
Example
I am too tired to continue working.
B1 noun /mæs/

mass

Meaning
a large body of matter with no specific shape; a large number of people or things
Example
A huge mass of people gathered in the square.
C2 adjective /kəˈnaɪ.vɪŋ/

conniving

Meaning
secretly scheming or plotting to help in wrongdoing
Example
He is a conniving politician who manipulates people for power.
C2 noun /ˈmænˌtræp/

man-trap

Meaning
A trap designed to catch or injure humans; informally, a woman considered dangerously attractive.
Example
The old castle had a man-trap at the entrance.
A1 verb /wɒʃ/

wash

Meaning
to clean with water; to remove dirt
Example
Please wash your hands before eating.
B2 adjective /səˈpɔːtɪv/

supportive

Meaning
providing encouragement or emotional help to someone
Example
She was very supportive during my difficult times.
B2 adverb /ˈsel.fɪʃ.li/

Selfishly

Meaning
in a selfish manner; caring only about oneself
Example
He selfishly took all the cookies.
C2 adjective /ˈæməˌtɔːri/

amatory

Meaning
Relating to or expressing sexual love.
Example
The poet’s verses were filled with amatory themes.
A2 adverb /ˈbæk.wərdz/

Backwards

Meaning
in the direction that is behind; in reverse order
Example
He counted backwards from ten to one.
C2 noun /ˈsteɪsɪs/ or /ˈstæsɪs/

stasis

Meaning
A state of inactivity or equilibrium; a situation where nothing changes.
Example
The negotiations reached a state of stasis with no progress made.
C2 noun /əˌnʌn.siˈeɪ.ʃən/

annunciation

Meaning
The announcement of something; in Christianity, the announcement by the angel Gabriel to Mary that she would conceive Jesus.
Example
The church celebrated the Feast of the Annunciation with a special service.
A2 adjective /ˈpɒp.jʊ.lər/

Popular

Meaning
liked or admired by many people; well-known and widely accepted
Example
This restaurant is very popular among young people.
B2 adjective /ɪnˈædɪkwət/

inadequate

Meaning
Not sufficient or good enough.
Example
The funding was inadequate to complete the project.
C1 adjective /rɪˈbel.jəs/

Rebellious

Meaning
defying authority; resisting control; disobedient;
Example
The rebellious teenager refused to follow his parents' rules.
C1 adjective, verb (past tense/participle of mire) /ˈmaɪərd/

mired

Meaning
Trapped or entangled in something, typically a difficult situation.
Example
The politician was mired in scandal.
C2 noun /ˈtjuːtərʃɪp/

tutorship

Meaning
The office or position of a tutor; guidance or instruction given by a tutor.
Example
He thrived under the tutorship of his mentor.
C2 noun /ˈpɒl.i.mæθ/

polymath

Meaning
a person with knowledge of many different subjects
Example
Leonardo da Vinci was a true polymath, excelling in art, science, and engineering.
C2 verb /dɪˈsɛvər/

dissever

Meaning
To separate or cut apart.
Example
The treaty sought to dissever the two hostile regions.
C1 noun ˌmɒdɪfɪˈkeɪʃn

modification

Meaning
The action of making changes to something.
Example
The plan required modification.
B2 noun /ˌɑːrkiˈɑːlədʒi/

archaeology

Meaning
the study of human history and prehistory through excavation and analysis of artifacts, monuments, and other physical remains
Example
She studied archaeology to learn about ancient civilizations.
C1 noun ɪkˌstræp.əˈleɪ.ʃən

extrapolation

Meaning
The action of estimating or concluding something by assuming that existing trends will continue.
Example
His extrapolation of market trends helped in financial planning.
C1 noun speɪst ˌrep.ɪˈtɪʃ.ən

spaced repetition

Meaning
A learning technique that involves reviewing information at increasing intervals to improve long-term retention.
Example
Spaced repetition helps in long-term memory retention.
C2 adjective /ˈfædɪʃ/

faddish

Meaning
Following a temporary trend or fashion
Example
Wearing neon clothes was a faddish style in the 1980s.
A1 interjection /haɪ/

hi

Meaning
a friendly greeting used when meeting someone
Example
Hi, it's nice to meet you!
B2 noun /ˈskriːnɪŋ/

screening

Meaning
the act of examining or testing people to detect disease or evaluate suitability; a showing of a movie or program
Example
The hospital offered free health screening for all employees.
B1 noun /ˌprezənˈteɪʃən/

presentation

Meaning
The manner or style in which something is given, offered, or displayed.
Example
The presentation of the new product was well received.
C2 noun /səbˈdʌk.ʃən/

subduction

Meaning
The lateral and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
Example
The Pacific Ring of Fire is an area of intense subduction.
C2 adjective /ɪnˈsuːsiənt/

insouciant

Meaning
Showing a casual lack of concern; carefree.
Example
He gave an insouciant shrug and walked away.
C2 noun /ʃɪˈkeɪnəri/

chicanery

Meaning
The use of trickery or deception to achieve a purpose.
Example
The politician was accused of chicanery to win the election.
B2 noun /hʌm/

Hum

Meaning
a low continuous sound; to make a low continuous droning sound
Example
The constant hum of the air conditioner helped her fall asleep peacefully.
A1 adjective /mʌm/

Mum

Meaning
silent; saying nothing; keeping quiet
Example
He kept mum about the surprise party plans.
C1 verb /ˈʃrɪvəl/

shrivel

Meaning
To become dry, wrinkled, and smaller due to lack of moisture.
Example
The flowers shriveled under the hot sun.
C2 adjective /krəˈmætɪk/

chromatic

Meaning
Relating to colors or, in music, notes outside the standard scale.
Example
The artist used a chromatic palette to create vibrant contrasts.
B1 noun /ˈsæm.ən/

salmon

Meaning
A large fish with pink flesh, often eaten as food.
Example
They served grilled salmon for dinner.
B2 adjective /ˈsoʊpi/

Soapy

Meaning
covered with soap; having the characteristics of soap; foamy
Example
The dishes were still soapy after washing.
B2 verb /dɪsˈkʌrɪdʒ/

discourage

Meaning
to make someone less confident or enthusiastic about doing something
Example
Failure should not discourage you from trying again.
C2 adjective /ɑːrˈbɔːr.i.əl/

arboreal

Meaning
Relating to trees or living in trees; tree-dwelling.
Example
Monkeys are arboreal animals that spend most of their time in trees.
C1 adjective /ˈdʒoʊ.vi.əl/

jovial

Meaning
cheerful and friendly in manner
Example
He was in a jovial mood during the family gathering.
C1 verb ˈhɪndər

hinder

Meaning
To obstruct or delay the progress of something
Example
Excessive rain hinders vegetable growth.
B2 noun/adjective /rɪˈpʌblɪkən/

republican

Meaning
a member or supporter of a republican political party or system
Example
The republican candidate won the election.
C2 adjective /ˈɛksɪdʒənt/

exigent

Meaning
demanding immediate action or attention; urgent
Example
The patient’s exigent condition required immediate surgery.
C1 adjective /ˌɪndɪˈstɪŋkt/

indistinct

Meaning
Not clear or sharply defined; vague or blurred.
Example
The sound of voices was indistinct in the distance.
C1 adjective /ˈretʃɪd/

Wretched

Meaning
very unhappy; miserable; of poor quality
Example
The refugees lived in wretched conditions.
B2 noun /diːp siː/

deep sea

Meaning
The deep parts of the sea or ocean, typically beyond the continental shelf.
Example
Many deep-sea creatures produce bioluminescence for survival.
C1 adjective /ˈfɜːr.vənt/

fervent

Meaning
having or showing intense passion or enthusiasm
Example
She gave a fervent speech about climate change.
B2 noun ˈwɪl.paʊər

willpower

Meaning
The ability to control your thoughts and actions in order to achieve what you want to do.
Example
Strong willpower is essential for achieving long-term goals.
C1 noun /ˈmɒk.ər.i/

Mockery

Meaning
teasing and contemptuous language or behavior; ridicule
Example
His speech was met with mockery from the audience.
C2 noun /ˈmæŋɡoʊ fɪʃ/

Mango fish

Meaning
A popular white fish also known as barramundi or Asian sea bass
Example
Mango fish is prized for its delicate flavor and tender texture.
C2 noun /foʊˈtɑːmɪtri/

photometry

Meaning
the science of measuring visible light in terms of its perceived brightness to human eyes
Example
Photometry helps in designing efficient lighting systems.
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.
A2 verb /rɪˈmaɪnd/

remind

Meaning
to cause someone to remember something
Example
Please remind me to call her tomorrow.
B1 adverb /ɪnˈkriːsɪŋli/

increasingly

Meaning
more and more over time
Example
People are increasingly concerned about climate change.
C2 noun /ˈpɒliˌɑːrki/

polyarchy

Meaning
government by many people
Example
Polyarchy allows multiple parties to share power.
C2 adjective /dɪˈdjuːsəbl/

deducible

Meaning
able to be deduced; possible to be inferred
Example
The solution is deducible from the data provided.
C2 adjective /ˈrɛkənˌdaɪt/ or /ˈrɛkəndaɪt/

recondite

Meaning
Little known or difficult to understand.
Example
The professor’s lecture was full of recondite theories.
A2 adjective /ˈlʌv.li/

Lovely

Meaning
beautiful; charming; delightful; attractive
Example
What a lovely day for a picnic!
B1 verb /əˈsoʊsiˌeɪt/

associate

Meaning
to connect or link things together; to spend time with someone
Example
I associate this song with summer.
B2 verb /ˌriːˈbɪld/

rebuild

Meaning
to build something again after it has been damaged or destroyed
Example
The villagers worked together to rebuild the bridge after the flood.
A2 noun /ˈwɔː.tər.mel.ən/

Watermelon

Meaning
a large round fruit with a hard green skin and sweet red flesh with black seeds
Example
I bought a fresh watermelon from the market for the summer picnic.
C1 verb /ˈfrɒlɪk/

frolic

Meaning
to play and move about cheerfully, energetically, or playfully
Example
The children frolicked in the garden all afternoon.
C2 noun /ˈblʌfər/

bluffer

Meaning
a person who pretends to be more confident, skilled, or knowledgeable than they really are; someone who deceives others by bluffing
Example
Everyone eventually realized that he was just a bluffer with no real experience.
B2 noun /ˌep.ɪˈdem.ɪk/

Epidemic

Meaning
a widespread occurrence of an infectious disease in a community
Example
The flu epidemic affected thousands of people across the country.
C1 noun /ˈleɪ.dəl/

Ladle

Meaning
a large deep spoon with a long handle, used for serving soup or other liquids
Example
Use the ladle to serve the hot soup into bowls.
A2 noun /fɒks/

Fox

Meaning
a wild animal related to dogs, with a pointed face and thick fur
Example
The red fox is known for its cunning nature.
B2 adjective sɪnˈθet̬.ɪk

synthetic

Meaning
Made by chemical synthesis, especially to imitate a natural product; artificial.
Example
Synthetic chemicals are used in processed foods.
C2 noun /ˌhaɪdrəˈstætɪks/

hydrostatics

Meaning
The branch of science concerned with the mechanical properties of fluids at rest.
Example
Hydrostatics is essential in understanding how dams and reservoirs function.
C2 adjective /daɪˈɜːrnəl/

diurnal

Meaning
active during the day; occurring daily
Example
Most birds are diurnal creatures, active in daylight hours.
B2 noun bjʊəˈrɒk.rə.si

bureaucracy

Meaning
A system of government in which most of the important decisions are made by state officials rather than by elected representatives.
Example
Excessive bureaucracy can slow down decision-making.
B2 noun ˈfeɪs tə ˈfeɪs ˈbætl

face-to-face battle

Meaning
A direct confrontation or fight between opposing forces.
Example
The warriors fought a face-to-face battle with the enemies.
B2 noun /ˈfreʃmən/

freshman

Meaning
a first-year student at a high school, college, or university
Example
The freshman felt nervous on his first day at university.
B1 adjective /θrɪld/

thrilled

Meaning
extremely happy or excited
Example
She was thrilled with the surprise party.
A2 noun /kəˈmjuː.nə.ti/

community

Meaning
a group of people living in the same place or sharing common interests
Example
The community worked together to clean the park.
C2 noun /ˌkɔːrnjuˈkoʊpiə/

cornucopia

Meaning
an abundance or overflowing supply of something
Example
The festival offered a cornucopia of fruits and sweets.
C1 noun /ˈæl.ɪ.moʊ.ni/

alimony

Meaning
financial support that a person is ordered by a court to give to their spouse after separation or divorce
Example
He was ordered by the court to pay monthly alimony to his ex-wife.
C2 noun /bɜːrˈlɛsk/

burlesque

Meaning
A humorous and exaggerated imitation of a serious work; a type of theatrical entertainment involving comedy and parody.
Example
The play was a clever burlesque of traditional opera.
B1 noun /ˈɔːtəmoʊbiːl/

automobile

Meaning
a road vehicle powered by an engine, typically with four wheels
Example
He bought a new automobile last week.
C1 noun /ˈpriːˌkɜrsər/

precursor

Meaning
Something or someone that comes before another and indicates the approach of something else.
Example
The steam engine was a precursor to modern trains.
B1 noun /ˈrʌnər/

runner

Meaning
a person who runs, especially in races or for exercise
Example
The runner crossed the finish line with a big smile.
C1 verb, noun /miˈændər/

meander

Meaning
to wander aimlessly or follow a winding course
Example
We meandered through the old streets of the city.
A1 adjective /ɡʊd/

Good

Meaning
satisfactory; pleasant; beneficial; of high quality
Example
She is a good student.
B2 verb /ˈnɒmɪneɪt/

nominate

Meaning
to propose someone for a position or award
Example
The committee decided to nominate her for the award.
C1 noun ˈsɒl.vən.si

solvency

Meaning
The possession of assets in excess of liabilities; ability to pay debts.
Example
The company's solvency improved after restructuring.
C1 verb /ˌoʊvərˈruːl/

overrule

Meaning
to reject or disallow by exercising one's superior authority; to override a decision
Example
The judge overruled the objection from the defense attorney.
B1 noun fləʊ

flow

Meaning
The action or fact of moving along in a steady, continuous stream
Example
The flow of information must be secured.
C1 noun /ˌɪnkəmˈpliːtnəs/

incompleteness

Meaning
the state of not being complete or whole; lack of necessary parts or fullness
Example
The incompleteness of the report caused delays in the project.
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.
C2 adjective /ˈhaɪˌbraʊ/

highbrow

Meaning
intellectually superior or cultured; often describing art, literature, or activities appealing to intellectual tastes
Example
The museum is known for its highbrow exhibitions.
B1 noun /ruːt/

route

Meaning
a way or course taken to get from one place to another
Example
The best route to the airport is through the highway.
B1 adverb /ˈfriːkwəntli/

Frequently

Meaning
often; regularly; many times
Example
She frequently visits her grandmother on weekends.
C2 verb /ɪkˈspʌndʒ/

expunge

Meaning
To erase or remove completely, often something unwanted.
Example
He managed to expunge the embarrassing memory from his mind.
B1 noun, verb /ˈlaɪsəns/

license

Meaning
A legal permission to do something (noun); to grant such permission (verb).
Example
You must have a driving license to operate a car legally.
C1 noun /rɪˈfɜːrər/

referrer

Meaning
a person who directs someone to another person or service
Example
The referrer earned a bonus for recommending a new client.
C2 noun /ˈlɛtʃ.əri/

lechery

Meaning
excessive or offensive sexual desire; lustfulness
Example
The novel depicted the lechery of corrupt nobles.
C2 adjective /ˈdɪsənənt/

dissonant

Meaning
Harsh and lacking harmony; conflicting.
Example
The orchestra produced a dissonant sound during rehearsal.
C1 adjective /əˈnɒmələs/

anomalous

Meaning
deviating from what is standard, normal, or expected
Example
Scientists observed an anomalous result during the experiment.