sustainable technology
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C1 noun səˈsteɪ.nə.bəl tekˈnɒl.ə.dʒi

sustainable technology

Meaning
Technology designed to meet present needs without compromising future generations' ability to meet their needs.
Example
Sustainable technology ensures a cleaner future.
C1 noun ˈstræt.ə.sfɪər

stratosphere

Meaning
The layer of the earth's atmosphere above the troposphere, extending to about 50 km above the earth's surface.
Example
The stratosphere provides a unique environment.
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.
C1 verb /ɪmˈpɛrɪl/

imperil

Meaning
To put in danger or at risk.
Example
Reckless driving can imperil the lives of others.
C1 adjective /həˈred.ɪ.ter.i/

Hereditary

Meaning
passed down through family genes; inherited from ancestors
Example
The hereditary disease was passed down through generations.
C2 noun /ˌsɪləbɪˈkeɪʃən/

syllabication

Meaning
The division of words into syllables.
Example
Proper syllabication helps in correct pronunciation.
A2 noun /frɒɡ/

Frog

Meaning
a small amphibian animal that lives both in water and on land
Example
The frog jumped from the lily pad into the pond.
B2 noun /prəˈvɪʒ.ən/

Provision

Meaning
supplies of food and other necessary things; arrangement or preparation
Example
The government made provision for emergency supplies during the flood.
C1 adjective /ˈvendʒ.fəl/

Vengeful

Meaning
seeking to harm someone in return for a perceived injury; vindictive
Example
She felt vengeful after her friend betrayed her trust.
C2 noun /ˈmɪstəs/

Mengra / Mystus

Meaning
a genus of catfish found in Asia, commonly known as bagrid catfish
Example
The mystus fish is commonly found in rivers and streams of South Asia.
C1 verb, noun /sæp/

sap

Meaning
As a noun: the vital fluid in plants; As a verb: to gradually weaken or drain strength.
Example
The long journey began to sap his energy.
B2 adjective /ˈded.li/

Deadly

Meaning
causing or able to cause death; extremely dangerous; lethal
Example
The deadly poison killed the plant instantly.
C1 noun flɛər

flair

Meaning
A natural ability to do something well.
Example
She has a flair for design, always creating visually stunning work.
B2 adjective /ˈsɪvɪk/

civic

Meaning
relating to a city, town, or the duties of its citizens
Example
The mayor encouraged people to take part in civic activities.
B2 verb /ˈtɛstəfaɪ/

testify

Meaning
to make a statement or declaration under oath or to give evidence
Example
She was called to testify in court about the accident.
C2 noun /dɪˈdʒɛnərəsi/

degeneracy

Meaning
The state of decline or deterioration, often in moral, cultural, or physical qualities.
Example
The novel portrays the moral degeneracy of a corrupt society.
C1 verb /dɪsˈɡrʌntl/

disgruntle

Meaning
to make someone dissatisfied or discontented
Example
The unfair treatment disgruntled the workers.
B2 noun /ˈænsestri/

ancestry

Meaning
one’s family origins or lineage
Example
He is proud of his royal ancestry.
B1 noun /ˈɝːθ.kweɪk/

earthquake

Meaning
A sudden and violent shaking of the ground as a result of movements within the earth's crust.
Example
A powerful earthquake struck Japan last night.
C1 noun /fɑːrs/

farce

Meaning
a comic dramatic work using buffoonery and horseplay, or a ridiculous situation
Example
The meeting turned into a complete farce with everyone arguing.
A1 adjective/adverb /ɪˈnʌf/

enough

Meaning
as much or as many as required
Example
We have enough food for everyone.
B2 verb /triːd/

tread

Meaning
to step or walk on something; to crush with feet
Example
Don't tread on the flowers.
B1 noun /ɪnˈstrʌkʃən/

instruction

Meaning
Detailed information telling how something should be done or operated.
Example
Please read the instruction carefully before using the machine.
B2 noun /ˈkɔːr.əs/

Chorus

Meaning
a large organized group of singers; a part of a song that is repeated after each verse
Example
The school chorus performed beautifully at the annual concert.
C2 noun /ˌdɪləˈtænt/

dilettante

Meaning
A person who takes up an art, activity, or subject merely for amusement, especially in a superficial way.
Example
He was dismissed as a dilettante in the art world because he lacked formal training.
A2 pronoun /hɜːrˈsɛlf/

herself

Meaning
used to refer to a female person as the object of a verb or preposition when she is the subject
Example
She prepared the meal all by herself.
A2 adjective ˈhjuː.mən

human

Meaning
Relating to or characteristic of people or human beings; showing the better qualities of humankind, such as kindness.
Example
Human values shape social systems.
C1 noun /ˌmɪdˈsʌm.ər/

midsummer

Meaning
The middle of summer, often around the summer solstice in June.
Example
We had a festival to celebrate midsummer.
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.
C1 adjective /ˈɔː.də.bəl/

Audible

Meaning
able to be heard; loud enough to hear
Example
The speaker's voice was barely audible from the back of the large hall.
B2 adjective /rɪˈnjuː.ə.bəl/

renewable

Meaning
Able to be renewed or replaced naturally; not depleted when used.
Example
Renewable resources minimize environmental damage.
A2 noun /ˈblæŋ.kɪt/

Blanket

Meaning
a large piece of woolen or similar material used as a covering for warmth
Example
She wrapped herself in a warm blanket on the cold night.
C2 noun /mɪˈsɑːɡəmi/

misogamy

Meaning
Hatred or dislike of marriage.
Example
His misogamy prevented him from ever settling down with a partner.
C1 verb /tʃaɪd/

chide

Meaning
to scold or rebuke; to express disapproval
Example
The teacher chided the student for being late.
B2 noun /roʊˈteɪʃən/

Rotation

Meaning
the action of rotating around an axis or center; a single turn
Example
The Earth's rotation takes 24 hours to complete.
C1 noun /bɜːrθ/

Berth

Meaning
a sleeping place in a ship, train, or other vehicle; a place where a ship can dock
Example
I booked an upper berth on the overnight train.
C2 noun /ləˈdʒɪʃən/

logician

Meaning
A person skilled in logic and reasoning.
Example
Aristotle is considered one of the greatest logicians in history.
B2 noun /dɪˈrɛktəri/

directory

Meaning
a book or online resource listing people, businesses, or services with relevant details
Example
I need to find a plumber in the phone directory.
B1 noun ˌkɒn.səˈveɪ.ʃən

conservation

Meaning
The protection of plants and animals, natural areas, and interesting and important structures and buildings, especially from the damaging effects of human activity.
Example
Conservation of forests is crucial for climate stability.
B2 noun /dɪˈtɛkʃən/

detection

Meaning
the action or process of identifying the presence of something
Example
The detection of fraud in the system was swift.
B2 verb /dɪˈtekt/

detect

Meaning
to discover or identify the presence or existence of something; to notice something that is not immediately obvious
Example
The security system can detect movement in the building.
B1 adverb /ˈkʌrəntli/

currently

Meaning
at the present time; now
Example
He is currently working on a new project.
B2 noun /ˈkæt fɪʃ/

Cat fish

Meaning
a freshwater fish with whisker-like barbels around the mouth, commonly found in ponds and rivers
Example
Catfish is often fried and served with rice in Bengali cuisine.
C1 noun /ˈsteɪtəs kwoʊ/

status quo

Meaning
The existing state of affairs, especially regarding social or political issues.
Example
The government decided to maintain the status quo until further review.
B1 noun /ˈmɪʃ.ən/

Mission

Meaning
An important task or assignment given to a person or group; a specific purpose or goal
Example
The astronauts completed their mission to the space station.
C2 adjective /ˈdoʊlfəl/

Doleful

Meaning
sorrowful; mournful; expressing grief or sadness
Example
She gave him a doleful look when he left.
C1 adjective /snaɪd/

snide

Meaning
mocking or insulting in an indirect way
Example
He couldn’t resist making a snide comment about her dress.
B1 noun /ˌvedʒəˈteəriən/

Vegetarian

Meaning
a person who does not eat meat or fish; relating to vegetarians or vegetarianism
Example
She became a vegetarian for health and environmental reasons.
A2 verb (past tense / past participle) /əˈtræktɪd/

attracted

Meaning
felt interest or liking toward someone or something; was drawn by appeal or force
Example
She was attracted to the idea of studying abroad.
C2 verb /ˈpjuːtrɪfaɪ/

putrefy

Meaning
to decay or rot, producing a foul smell
Example
The meat began to putrefy in the heat.
C1 verb /dɪˈteɪn/

detain

Meaning
to keep someone from proceeding; to hold back, especially by official authority
Example
The police detained the suspect for questioning.
B2 adjective /ˈfɛdərəl/

federal

Meaning
Relating to the central government of a federation.
Example
The federal government passed a new law on healthcare.
C1 adjective /kənˈtɪɡ.ju.əs/

contiguous

Meaning
sharing a common border; touching
Example
The two continguous houses shared a wall.
C1 adjective /kəˈlæpsəbl̩/

collapsible

Meaning
able to be folded down or reduced in size
Example
She bought a collapsible chair for camping.
C1 adjective /ˈhɑːrtˌrɛndɪŋ/

heartrending

Meaning
Causing great sadness or distress; very moving emotionally.
Example
The documentary showed heartrending scenes of war victims.
C1 adjective /kənˈstreɪnd/

constrained

Meaning
appearing forced, unnatural, or restricted
Example
He gave a constrained smile during the awkward meeting.
A1 pronoun /ɪt/

it

Meaning
used to refer to a thing, animal, or idea previously mentioned or easily identified
Example
It is raining outside.
A1 noun /keɪk/

Cake

Meaning
a sweet baked dessert made from flour, sugar, and other ingredients
Example
They ordered a chocolate cake for the birthday party.
C2 noun /əˈblɪkwɪti/

obliquity

Meaning
Deviation from moral or usual conduct; indirectness or lack of straightforwardness.
Example
The politician was criticized for the obliquity of his answers.
A2 verb /ˈeksərsaɪz/

exercise

Meaning
to do physical activity; to use or practice
Example
I exercise at the gym three times a week.
B2 adjective /ˌdɪsədˈvæntɪdʒd/

disadvantaged

Meaning
Lacking the basic resources or conditions needed for a good standard of living or equal opportunities.
Example
The program provides support to disadvantaged children.
C1 noun /ˈæptɪˌtjuːd/

aptitude

Meaning
a natural ability or talent to do something well
Example
She has a strong aptitude for learning new languages.
B1 noun /ˈprəʊɡræmɪŋ/

programming

Meaning
the process of designing and writing computer programs
Example
He has been learning programming for several months now.
C2 noun /ˈpoʊltɪs/

poultice

Meaning
a soft, moist mass of material applied to the body to relieve soreness and inflammation
Example
The nurse applied a warm poultice to his injured leg.
B1 noun /ˈpɪ.ti/

Pity

Meaning
a feeling of sadness or sympathy for someone's misfortune; something that causes regret or disappointment
Example
I felt pity for the homeless man in the rain.
C1 verb /ˌriːəˈfɜːrm/

reaffirm

Meaning
To state again strongly; to confirm or strengthen a statement or belief.
Example
The president reaffirmed his commitment to education reform.
C2 adjective /ˈfʊtˌluːs/

footloose

Meaning
Free to go anywhere or do anything; not tied down by responsibilities.
Example
After graduating, he felt footloose and ready to explore the world.
B1 adjective /ˈdiː.teɪld/

detailed

Meaning
Having many details; very thorough.
Example
The report provided a detailed analysis of the situation.
C1 verb /ˌkɒntrəˈviːn/

contravene

Meaning
to go against or act in opposition to a law, rule, or agreement
Example
He contravened the safety regulations and was fined.
A2 noun /ˈden.tɪst/

Dentist

Meaning
a medical professional who treats teeth and oral health
Example
I need to visit the dentist for a regular checkup.
B1 noun /dɪˈtɛktɪv/

detective

Meaning
a person whose job is to investigate and solve crimes
Example
The detective solved the mystery in just two days.
B1 verb /kənˈtɪnjuɪŋ/

continuing

Meaning
to keep doing something without stopping
Example
They are continuing their journey despite the rain.
C2 noun /æbˈsɪʒən/

abscission

Meaning
The natural detachment of parts of a plant, typically leaves or fruit.
Example
The autumn season is marked by the abscission of leaves from trees.
A2 noun /reɪt/

rate

Meaning
the cost or price of something, or the amount at which something happens
Example
The rate of inflation is increasing every year.
A2 noun /ˈdraɪ.vər/

Driver

Meaning
a person who operates a motor vehicle
Example
The taxi driver knew all the shortcuts through the busy city.
C1 noun ɪˌræd.ɪˈkeɪ.ʃən

eradication

Meaning
The complete destruction or elimination of something unwanted.
Example
Carbon eradication is a key goal of the project.
A2 pronoun /ˈnoʊˌbɑːdi/

nobody

Meaning
no person; not anyone
Example
Nobody came to the party.
C1 noun /ˈspɪnstər/

spinster

Meaning
An unmarried woman, often one who is older and considered unlikely to marry
Example
The novel featured a kind-hearted spinster who cared for the village children.
B2 adjective /ˌʌnkənˈvɪnsɪŋ/

Unconvincing

Meaning
failing to persuade or impress; not believable or credible
Example
His excuse for being late was completely unconvincing.
B1 noun ˈtʃɑː.dʒɪŋ

charging

Meaning
The process of supplying electrical energy to recharge a battery or power source.
Example
Electric vehicle charging stations are increasing in cities.
B2 noun /ˈkʊriər/

courier

Meaning
a person or company that delivers messages, packages, or mail
Example
The courier delivered the documents on time.
C2 noun /hæɡ/

Hag

Meaning
an ugly old woman, especially a vicious or malicious one; a witch
Example
In the fairy tale, the wicked hag lived alone in a cottage deep in the forest.
B1 adjective /drʌŋk/

drunk

Meaning
affected by alcohol to the point of losing control of one's faculties or behavior
Example
He was too drunk to walk straight.
B2 adjective /ˈprɒmɪnənt/

prominent

Meaning
Important, famous, or easily noticeable.
Example
He is a prominent leader in the community.
B1 noun /ˈpɑr.dən/

Pardon

Meaning
forgiveness; the action of forgiving or being forgiven for an error or offense
Example
I beg your pardon for interrupting the meeting.
C2 noun /ɪnˈvɛktɪv/

invective

Meaning
Insulting, abusive, or highly critical language.
Example
The politician’s speech was filled with invective against his opponents.
B2 noun /pænt/

Pant

Meaning
a piece of clothing worn on the lower body covering each leg separately
Example
She bought a new pair of pants for the party.
C1 verb /əˈkrɛdɪt/

accredit

Meaning
to officially recognize, authorize, or approve someone or something
Example
The university is accredited by the national education board.
A2 noun /ˈwɛdɪŋ/

wedding

Meaning
a marriage ceremony, especially considered as including the associated celebrations
Example
They are planning a wedding in the summer.
C2 noun /ˈdʒaɪər/

gyre

Meaning
A circular or spiral motion or form, especially a giant circular oceanic surface current.
Example
The Great Pacific Garbage Patch is trapped in a gyre.
C1 verb /ˈɪtəreɪt/

iterate

Meaning
To repeat a process or statement, often to improve or refine.
Example
The software team will iterate the design until it meets user needs.
C2 adjective /ɡoʊʃ/

gauche

Meaning
lacking social grace, sensitivity, or tact; awkward
Example
His gauche remarks embarrassed everyone at the dinner party.
C1 verb /ˈruː.mɪ.neɪt/

ruminate

Meaning
to think deeply about something; to chew cud (for animals)
Example
She sat alone to ruminate on her decision.
A2 adjective /ˈpriː.vi.əs/

Previous

Meaning
occurring before in time or order; earlier; former
Example
I reviewed the previous chapter before starting the new one.
C2 noun /lɪˈbrɛtoʊ/

libretto

Meaning
The text of an opera or other long vocal work.
Example
She studied the libretto before attending the opera performance.
C2 noun /pʌɡˈnæsɪti/

pugnacity

Meaning
A natural disposition to be combative or aggressive.
Example
The coach admired the player's pugnacity on the field.
C1 noun /jiːst/

Yeast

Meaning
microorganisms used in baking and brewing to cause fermentation
Example
Add yeast to the flour to make the bread rise.
B2 noun /ˈdɛməˌkræt/

democrat

Meaning
a supporter of democracy or a member of the Democratic Party in the US
Example
He is a strong democrat who believes in equal rights.
C1 noun /vɛnˈdɛtə/

vendetta

Meaning
a prolonged bitter quarrel or campaign of revenge
Example
The two families were caught in a bitter vendetta for generations.
C2 noun /ˌjuːzɜːrˈpeɪʃən/

usurpation

Meaning
The act of taking someone's power or property illegally or by force.
Example
The general's usurpation of the presidency led to political unrest.
B2 noun /liːk/

Leek

Meaning
vegetable related to onion with long green leaves and white bulb, milder than onion
Example
The soup was made with potatoes and leeks.
B1 noun /rɪˈɡret/

Regret

Meaning
a feeling of sadness or disappointment about something that has happened or been done
Example
She felt deep regret about her harsh words.
C2 verb ˈlev.ɪ.teɪ.tɪŋ

levitating

Meaning
Rising and hovering in the air, especially as a result of supernatural or magical power.
Example
The levitating structure is an engineering marvel.
B2 noun /ˈskɒl.ər/

Scholar

Meaning
a person who has studied a subject for a long time and knows a lot about it; an academic
Example
The renowned scholar published several books on ancient history.
C1 verb rɪˈlɪŋ.kwɪʃ

relinquish

Meaning
To give up any authority, responsibility, or property.
Example
He decided to relinquish his position as CEO.
B2 noun /pæd/

pad

Meaning
a small cushion or block of soft material; also a set of sheets of paper fastened together
Example
He wrote her phone number on a yellow pad.
C1 noun /ˈpɜːrkəleɪtər/

percolator

Meaning
A device used for brewing coffee by continually cycling boiling water through coffee grounds.
Example
She made a fresh pot of coffee using the percolator.
C1 adjective /ˌɪn.ɪˈfɛk.tʃu.əl/

ineffectual

Meaning
Not producing any or the desired effect; lacking the ability or qualities to achieve a purpose.
Example
The manager’s ineffectual leadership caused the team to lose motivation.
C2 verb /ʌpˈbreɪd/

upbraid

Meaning
To scold or criticize someone harshly.
Example
The teacher upbraided the student for being late again.
A2 adjective /ˈpɜːrsənl/

personal

Meaning
relating to a particular person rather than anyone else
Example
She shared some personal details about her family.
A2 determiner/adjective /ˈfjuːər/

fewer

Meaning
a smaller number of; not as many
Example
Fewer people attended the meeting than expected.
C2 noun /kəˈkɒfəni/

cacophony

Meaning
A harsh, discordant mixture of sounds.
Example
The cacophony of horns made it impossible to concentrate.
C2 verb /bɪˈɡaɪl/

beguile

Meaning
to charm or enchant someone, often in a deceptive way
Example
She beguiled the audience with her storytelling.
B1 adjective /kriˈeɪtɪv/

creative

Meaning
Having the ability to produce new and original ideas or things.
Example
She is very creative in her writing.
B2 verb /prɪˈsiːdɪd/

preceded

Meaning
came before something in time, order, or position
Example
Dark clouds preceded the heavy rainfall.
B2 noun /əˌveɪləˈbɪləti/

availability

Meaning
the state of being able to be used or obtained
Example
The availability of clean water is crucial for health.
B2 verb /ɡriːv/

grieve

Meaning
To feel or cause deep sorrow, especially due to someone's death.
Example
She continues to grieve the loss of her best friend.
B2 noun /aɪˌdɛntɪfɪˈkeɪʃən/

identification

Meaning
the process of recognizing or proving who or what someone or something is
Example
You need proper identification to enter the building.
B1 adjective /ˈbælənst/

balanced

Meaning
keeping or showing a sensible and fair view or position; evenly arranged
Example
A balanced diet is essential for good health.
B2 verb /dɪˈvoʊt/

devote

Meaning
to give time, effort, or resources to something
Example
She devotes much of her time to helping the poor.
B2 adjective /ˌpoʊstˈwɔːr/

post-war

Meaning
relating to the period after a war has ended
Example
The country experienced rapid economic growth in the post-war years.