opalescent
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C2 adjective /ˌoʊpəˈlɛsənt/

opalescent

Meaning
showing or reflecting a milky, iridescent light like an opal
Example
The opalescent sky glowed with shades of pink and blue.
C2 noun /ɡaɪl/

guile

Meaning
Cleverness or cunning used to achieve a goal, often in a deceptive way
Example
He used guile to win the negotiation.
C2 noun /reɪθ/

wraith

Meaning
A ghost or ghostlike image of someone, especially seen shortly before or after their death.
Example
A wraith appeared in the fog near the old castle.
C1 verb /ˈdrɪbəl/

dribble

Meaning
to let liquid flow slowly in drops or to move a ball skillfully with repeated small kicks or bounces
Example
The baby dribbled milk on his shirt.
A2 noun /bɪl/

Bill

Meaning
the beak of a bird, especially when it is broad and flat
Example
The duck used its bill to filter food from the water.
B2 adjective /ˈdred.fəl/

Dreadful

Meaning
extremely bad or unpleasant; causing fear or suffering; terrible
Example
The weather was dreadful during our vacation.
C1 noun /ˌriː.dɪs.trɪˈbjuː.ʃən/

redistribution

Meaning
The sharing of wealth or resources more equally among society.
Example
The government introduced a redistribution policy to reduce inequality.
C2 verb /breɪ/

bray

Meaning
To make a loud, harsh sound like a donkey.
Example
The donkey began to bray loudly in the field.
C1 verb /tiːm/

teem

Meaning
to be full of or swarming with
Example
The forest teems with wildlife.
B1 noun /ˈsmoʊkər/

smoker

Meaning
A person who smokes tobacco or other substances
Example
He is a heavy smoker and tries to quit every year.
C1 verb /ˈteɪpər/

taper

Meaning
To gradually decrease in width, thickness, or intensity.
Example
The road tapers off as it reaches the mountains.
C2 noun /lɒx/ or /lɒk/

lough

Meaning
An Irish or Scottish word for a lake or sea inlet.
Example
The fishermen lived by the lough for generations.
A2 noun ˈpraɪsɪz

prices

Meaning
The amount of money expected, required, or given in payment for something.
Example
Rising prices are affecting consumer spending.
C1 adjective /ˌkætəˈklɪzmɪk/

cataclysmic

Meaning
Relating to or denoting a violent natural event or upheaval.
Example
The war had cataclysmic effects on the nation's economy.
B1 adverb /prɪˈsaɪs.li/

precisely

Meaning
In an exact and accurate manner, with attention to detail.
Example
The robotic arm performed the operation precisely.
C1 adjective /ˌɒbsəˈliːt/

obsolete

Meaning
No longer in use or out of date.
Example
Floppy disks are now completely obsolete.
C2 verb /ˈblændɪʃ/

blandish

Meaning
to flatter or coax someone with kind words or praise in order to influence them
Example
He blandished the officials with compliments to gain their support.
B2 verb /bɪˈfrɛnd/

befriend

Meaning
to act as a friend to someone; to make friends with
Example
She befriended the new student at school.
C1 verb /ˈwɪtl/

whittle

Meaning
to carve or shape something by cutting off small pieces; to gradually reduce
Example
He spent the afternoon whittling a piece of wood into a toy.
B1 noun /ɪkˈstent/

Extent

Meaning
the area covered by something; the degree to which something has spread
Example
The extent of the damage caused by the flood was enormous.
C2 noun /ˌɪndɛnˈteɪʃən/

indentation

Meaning
A space left at the beginning of a line of text; a notch or deep recess on a surface.
Example
The teacher asked the students to use proper indentation in their essays.
C1 adjective əˈblɪv.i.əs

oblivious

Meaning
Being completely unaware of surrounding events.
Example
He was oblivious to the noise around him while reading.
B2 adjective /ˈʌt.moʊst/

Utmost

Meaning
greatest; most extreme; maximum possible
Example
She showed utmost care while handling the fragile items.
C2 noun /ɪˈfʌldʒəns/

effulgence

Meaning
Brilliant radiance or shining brightness.
Example
The effulgence of the sunrise lit up the entire valley.
A2 noun /dɪˈlɪv.ə.ri/

Delivery

Meaning
the action of delivering letters, parcels, or goods; the process of giving birth
Example
The delivery of the package was delayed due to bad weather conditions.
B2 noun /ˌledʒɪsˈleɪʃən/

legislation

Meaning
laws considered collectively, or the act of making laws
Example
The government passed new legislation to protect the environment.
B2 adjective /ˈθɜːrməl/

thermal

Meaning
Related to heat or temperature.
Example
She wore a thermal jacket to stay warm in winter.
A2 adjective /ˈlʌv.li/

Lovely

Meaning
beautiful; charming; delightful; attractive
Example
What a lovely day for a picnic!
B2 noun /fɪˈlɒs.ə.fi/

philosophy

Meaning
the study of the fundamental nature of knowledge, reality, and existence
Example
Her philosophy emphasizes kindness and empathy.
C2 adjective /sɛnˈsɔːriəs/

censorious

Meaning
severely critical of others
Example
She was always censorious about her colleagues' mistakes.
B2 noun /ˈmærəθən/

marathon

Meaning
a long-distance running race, typically 42.195 kilometers (26.2 miles)
Example
She completed the marathon in under four hours.
B2 adjective /ɪkˌsperɪˈmentl/

experimental

Meaning
based on untested ideas or techniques; relating to experiments or testing
Example
The scientists developed an experimental drug to treat cancer.
B2 noun /ˈves.əl/

vessel

Meaning
A ship or large boat.
Example
The vessel carried critical supplies.
C2 noun /əbˈstɛtrɪks/

obstetrics

Meaning
The branch of medicine dealing with childbirth and care of women giving birth.
Example
She is studying obstetrics to become a specialist in childbirth.
C2 noun /ˌpaɪroʊˈmeɪniæk/

pyromaniac

Meaning
A person with an uncontrollable desire to set things on fire.
Example
The pyromaniac was arrested for setting several buildings ablaze.
C1 noun /ˈbrɛvɪti/

brevity

Meaning
Concise and exact use of words in writing or speech.
Example
The brevity of the speech kept the audience engaged.
B2 verb /ɪmˈbɑːrkɪŋ/

embarking

Meaning
Beginning a journey or enterprise.
Example
The group is embarking on a long journey.
B2 noun /əˈsaɪləm/

asylum

Meaning
Protection or shelter, especially given to refugees or the mentally ill.
Example
The refugees sought asylum in the neighboring country.
C1 verb /prɒd/

prod

Meaning
to poke or push someone or something with a finger, foot, or pointed object
Example
She prodded him in the arm to get his attention.
C1 adjective /ˌɪnstənˈteɪniəs/

instantaneous

Meaning
Happening immediately, without any delay.
Example
The change in temperature was almost instantaneous.
C2 adjective /ˌdɪskəmˈbɑːbjuleɪtɪd/

discombobulated

Meaning
confused and disoriented; feeling unsettled
Example
She looked discombobulated after hearing the unexpected news.
B2 noun /ɡriːn ˈtʃɪl.i/

Green Chili

Meaning
unripe chili pepper that is green in color and has a spicy taste
Example
She added chopped green chili to the salad for extra heat.
C2 adjective /sɪˈnæp.tɪk/

synaptic

Meaning
Related to the signal transmission process between nerve cells.
Example
Learning strengthens synaptic connections in the brain.
C2 noun /ˌrɛv.əˈkeɪ.ʃən/

revocation

Meaning
The act of officially canceling or withdrawing something.
Example
The court ordered the revocation of his license.
C1 noun /ˌkɒnstəˈneɪʃən/

consternation

Meaning
A feeling of anxiety, dismay, or confusion, often caused by something unexpected.
Example
The sudden announcement caused widespread consternation among the employees.
C1 verb /ˈdʒʌmbəl/

jumble

Meaning
to mix things together in a confused or untidy way
Example
Don't jumble all the papers together in one pile.
B1 adjective /ɪmˈpeɪʃənt/

impatient

Meaning
Not able to wait calmly; restless and eager for something to happen.
Example
She grew impatient while waiting in the long queue.
C1 noun /kənˈsɜːvəˌtɪzəm/

conservatism

Meaning
A political or social philosophy promoting traditional institutions and resistance to change.
Example
Conservatism values tradition and gradual development.
C2 noun /ˈsʌbtərˌfjuːdʒ/

subterfuge

Meaning
Deceit used to achieve one's goal; a trick or excuse to evade something.
Example
They used subterfuge to avoid paying taxes.
B2 adjective /ˈles.ər/

Lesser

Meaning
smaller in amount; of lower importance; inferior
Example
He chose the lesser of two evils when making his decision.
C1 verb ˈɔːr.kɪ.streɪt

orchestrate

Meaning
To plan or coordinate the elements of (a situation) to produce a desired effect, especially surreptitiously.
Example
He skillfully orchestrated the entire event.
C1 noun /ɪkˈspæns/

expanse

Meaning
a wide, open area of land, sea, or sky
Example
The desert is a vast expanse of sand and rock.
C2 noun /ˈænɪməs/

animus

Meaning
A strong feeling of hostility; motivation or purpose behind an action.
Example
His speech was driven by animus against the policy.
B2 noun dɪˈstrækʃən

distraction

Meaning
Something that prevents concentration or takes attention away from something else.
Example
Distraction during study time can hinder learning.
C2 noun /ˈtæmbər/ or /ˈtɪmbər/

timbre

Meaning
The character or quality of a musical sound or voice as distinct from its pitch and intensity.
Example
Her voice had a warm timbre that soothed the audience.
A2 noun /juːθ/

Youth

Meaning
the period between childhood and adult age; young people collectively; the state of being young
Example
He spent his youth traveling around the world.
C2 noun /ˈfɔːrʃɔːr/

foreshore

Meaning
The part of the shore between the high and low tide marks
Example
Children were playing on the foreshore, collecting shells.
C2 verb /vɪˈtjuːpəreɪt/

vituperate

Meaning
To criticize harshly or abuse verbally.
Example
The politician was quick to vituperate his opponents during the debate.
B1 noun ˌrekəɡˈnɪʃn

recognition

Meaning
Acknowledgment of the existence, validity, or legality of something; appreciation or acclaim for an achievement, service, or ability.
Example
He earned recognition after years of struggle.
A2 noun /wɜːrks/

works

Meaning
the physical or mental effort used to achieve something
Example
Her works have been exhibited in museums worldwide.
B2 adjective ˌrev.əˈluː.ʃən.ər.i

revolutionary

Meaning
Involving or causing a complete or dramatic change.
Example
Revolutionary ideas are reshaping the industry.
C1 adjective /ˈsleɪ.vɪʃ/

slavish

Meaning
showing no originality; completely imitative or overly submissive
Example
His slavish devotion to tradition prevented any innovation.
C1 verb /ɪmˈbrɔɪl/

embroil

Meaning
to involve someone deeply in a conflict, argument, or difficult situation
Example
The politician was embroiled in a major corruption scandal.
C1 verb /ɪmˈbɛl.ɪʃ/

embellish

Meaning
To make something more attractive by adding decorative details or exaggerating.
Example
He tends to embellish stories to make them more interesting.
B2 verb /rɪˈkɜːr/

recur

Meaning
to happen again, especially repeatedly or at regular intervals
Example
The headache tends to recur every few weeks.
A2 noun /sɔːs/

Sauce

Meaning
a liquid or semi-liquid substance served with food to add moisture and flavor
Example
She added tomato sauce to her pasta.
C1 noun /səˈnɑːtə/

sonata

Meaning
A musical composition for one or more instruments, typically in several movements.
Example
She performed a beautiful Beethoven sonata on the piano.
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 noun /ˌædəˈreɪʃən/

adoration

Meaning
deep love and respect; worship
Example
The fans showed their adoration for the singer.
C2 verb /ˈbraʊˌbiːt/

browbeat

Meaning
To intimidate or bully someone into doing something
Example
The lawyer tried to browbeat the witness.
C1 noun /səˈsteɪnəbl ˈæɡrɪkʌltʃər/

sustainable agriculture

Meaning
Farming practices that meet current food needs while preserving environmental resources and maintaining the ability to produce food for future generations through ecologically sound methods.
Example
Sustainable agriculture practices protect the environment while ensuring food security.
B2 adjective /ˌmæθəˈmætɪkəl/

mathematical

Meaning
relating to mathematics or the use of mathematics
Example
The mathematical equation was difficult to solve.
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.
C2 adjective /ˈfræk.ʃəs/

Fractious

Meaning
irritable and quarrelsome; difficult to control; bad-tempered
Example
The fractious child refused to follow any of the teacher's instructions.
C1 noun /ˌkɒnfləˈɡreɪʃən/

conflagration

Meaning
A large, destructive fire that destroys a great deal of land or property.
Example
The forest was devastated by a massive conflagration that lasted for days.
C2 noun (plural, informal) /skædz/

scads

Meaning
A large number or quantity of something (informal).
Example
She has scads of friends in the city.
C1 noun /ˈmoʊldɪŋ/

molding

Meaning
A decorative strip or design, often used on walls, ceilings, or furniture.
Example
The wooden molding gave the room a classic look.
C2 noun /ˈvɔːdəvɪl/

vaudeville

Meaning
A type of entertainment popular in the early 20th century, featuring a mixture of comedy, song, dance, and variety acts.
Example
The vaudeville show included comedians, magicians, and dancers.
C1 noun /dɪsˈɪntrəst/

disinterest

Meaning
lack of interest or concern
Example
His disinterest in the project was obvious.
B2 noun /ˈruːmər/

rumor

Meaning
a currently circulating story or report of uncertain or doubtful truth.
Example
There’s a rumor that the company will merge next year.
B2 adverb /ˈʃɑːrpli/

sharply

Meaning
suddenly and strongly; in a cutting or intense way
Example
Prices rose sharply after the announcement.
A1 verb /stɑːrt/

start

Meaning
to begin something; to commence; to initiate
Example
Let's start the meeting now.
C2 noun /boʊl/

bole

Meaning
the trunk of a tree
Example
The bole of the tree was thick and strong.
C2 adjective /ˌæk.rɪˈmoʊ.ni.əs/

acrimonious

Meaning
Bitter and angry, often involving harsh words.
Example
The debate turned acrimonious after the controversial remark.
C1 adverb spɒnˈteɪnɪəsli

spontaneously

Meaning
In a spontaneous way; naturally and without planning or external cause.
Example
Children learn spontaneously through peer interactions.
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.
C2 verb /ɪˈstreɪndʒ/

estrange

Meaning
to cause someone to no longer be close or affectionate; to alienate
Example
His constant criticism began to estrange him from his friends.
B1 adverb /bɪˈniːθ/

Beneath

Meaning
under; below; underneath
Example
The treasure lies beneath the old tree.
C1 verb /əˈnʌl/

annul

Meaning
to declare something legally invalid or cancel it
Example
The court decided to annul the marriage due to fraud.
A2 adverb /ˈprɒb.ə.bli/

Probably

Meaning
almost certainly; very likely; in all likelihood
Example
He will probably arrive late tonight.
C2 noun /haɪˈdrɒl.ɪ.sɪs/

hydrolysis

Meaning
A chemical process that breaks down compounds by adding water, splitting complex molecules into simpler forms.
Example
Hydrolysis breaks down complex molecules into simpler forms.
C1 adjective /diːˈsɛntrəlaɪzd/

decentralized

Meaning
Controlled by several local offices or authorities rather than one single one.
Example
The decentralized system allowed for more control at local levels.
B1 verb /ˈɒnər/

honour

Meaning
to show respect; to keep a promise
Example
We honour our veterans for their service.
C1 verb /ˈkɒŋɡrɪɡeɪt/

congregate

Meaning
to gather together in a group; to assemble
Example
People congregate in the town square every evening.
C1 adjective /dɪˈstrɔːt/

distraught

Meaning
extremely upset and anxious, often to the point of being unable to think clearly
Example
She was distraught after losing her pet.
C1 noun /ˈpoʊlstər/

pollster

Meaning
a person or organization that conducts surveys to gauge public opinion
Example
The pollster predicted a close election outcome.
B2 adjective /ʌnˈtʃeɪndʒɪŋ/

unchanging

Meaning
remaining the same over time; not changing
Example
Her love for her family was unchanging throughout the years.
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.
C2 noun /ˌpɛntəˈhiːdrən/

pentahedron

Meaning
A solid geometric figure with five faces.
Example
In geometry class, the teacher explained the structure of a pentahedron.
C2 verb /bɪˈfuːl/

befool

Meaning
to deceive or trick someone into believing something false; to make someone appear foolish
Example
The scammer tried to befool innocent people with fake promises.
C2 adjective /ˈloʊð.səm/

Loathsome

Meaning
causing hatred or disgust; repulsive
Example
The loathsome smell from the garbage made everyone leave the room.
C2 verb /ˈmjuːtɪleɪt/

mutilate

Meaning
to inflict serious damage on something, often by cutting or tearing
Example
The ancient manuscript was mutilated by careless handling.
A2 verb ˈselɪbreɪt

celebrate

Meaning
To acknowledge a significant or happy day or event with a social gathering or enjoyable activity.
Example
Bangladesh celebrates Urban Planning Day on November 8.
C2 adjective /əˈsɪdjʊləs/

acidulous

Meaning
slightly sour or sharp in taste or manner
Example
The critic wrote an acidulous review of the movie.
B2 noun /ˈlænd.leɪ.di/

Landlady

Meaning
a woman who rents out land, a building, or accommodation; a female property owner
Example
The friendly landlady provided fresh towels and showed us around the apartment.
B2 noun /ˈdʒʊəri/

jury

Meaning
a group of people sworn to give a verdict in a legal case based on the evidence
Example
The jury found him guilty of the crime.
B2 adjective ˈeθ.ɪ.kəl

ethical

Meaning
Relating to moral principles or the branch of knowledge dealing with these.
Example
Ethical considerations guide decisions.
B1 noun, verb /ˈdɪskaʊnt/

discount

Meaning
A reduction in the usual price of something; to reduce the price of something.
Example
The store offered a 20% discount on all electronics.
C1 noun /pɔl/

Pall

Meaning
a cloth spread over a coffin; a dark covering that creates a gloomy atmosphere
Example
A pall of smoke hung over the burning building.
C1 adjective /rɪˈpliːt/

replete

Meaning
Filled or well-supplied with something; abundantly full.
Example
The book is replete with fascinating historical details.
C1 adjective /əˈnæl.ə.ɡəs/

analogous

Meaning
Comparable in certain respects, typically in a way that makes clearer the nature of things being compared.
Example
The human brain is analogous to a supercomputer.
B2 noun /pʌbˈlɪs.ɪ.ti/

Publicity

Meaning
public attention or notice given to someone or something; advertising or promotion
Example
The movie received a lot of publicity before its release.
C2 adjective /ˌɔːfˈkiː/

off-key

Meaning
out of tune; not in accordance with expected standards
Example
The singer was slightly off-key during the performance.
C2 adjective /ˈdʒɔːndɪst/

jaundiced

Meaning
Affected by or displaying prejudice, envy, or bitterness; also refers to having a yellowish discoloration of the skin due to jaundice.
Example
She gave a jaundiced view of the project after her proposal was rejected.
C1 noun dɪˈsʌɪsɪvnɪs

decisiveness

Meaning
The ability to make decisions quickly and effectively.
Example
His decisiveness during the crisis saved the company.
B2 noun /ˈsen.tɪ.piːd/

Centipede

Meaning
a long thin creature with many legs that lives in dark places
Example
I found a centipede crawling under the rock.
C2 verb /dɪˈkæpɪteɪt/

decapitate

Meaning
To cut off the head of a person or animal.
Example
The ancient executioner decapitated the criminal.
B1 verb /ˈpʌzəl/

puzzle

Meaning
to confuse or perplex; to think hard about something
Example
The math problem will puzzle even the experts.
A2 noun /ˈtreɪnɪŋ/

training

Meaning
the process of teaching or learning a particular skill or type of behavior
Example
She completed her training as a nurse last year.
A2 noun /ˈfæktəri/

factory

Meaning
A building or group of buildings where goods are manufactured.
Example
He works in a shoe factory.
C1 adjective /ˌhɒməˈdʒiːniəs/

homogeneous

Meaning
Of the same kind; alike.
Example
The team was not homogeneous in their skills.