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B2 noun /ˈɒpəreɪtər/

operator

Meaning
a person who operates equipment, a business, or controls something
Example
The machine operator ensured that everything ran smoothly.
C1 noun /ˈbjuːɡəl/

Bugle

Meaning
a brass musical instrument similar to a trumpet but without valves, used especially for military calls
Example
The soldier played the bugle to signal the start of the ceremony.
C1 noun /flʌks/

flux

Meaning
continuous change or movement; the rate of flow of something
Example
The company was in a state of constant flux during the reorganization.
C1 adjective /ˈspɑːrtn/

spartan

Meaning
showing simplicity and lack of luxury; austere
Example
He lived in a spartan room with just a bed and a chair.
C2 noun /ˈkeɪsiːn/

Casein

Meaning
the main protein found in milk and cheese, used in food production and supplements
Example
Casein protein powder is popular among athletes for muscle recovery.
C1 verb /ˌʌndəˈreɪt/

underrate

Meaning
to fail to recognize the full value or importance of something or someone
Example
Many people underrate the benefits of regular exercise.
B2 adjective /fræŋk/

Frank

Meaning
honest; open; straightforward; candid
Example
She gave me a frank opinion about my presentation.
C2 noun /nɑːrˈsɪsəs/

narcissus

Meaning
A type of flowering plant with yellow or white blooms, often associated with self-love from Greek mythology.
Example
A narcissus bloomed in the garden during spring.
B2 adjective ˈeθ.ɪ.kəl

ethical

Meaning
Relating to moral principles or the branch of knowledge dealing with these.
Example
Ethical considerations guide decisions.
C2 noun /ˈlɛtʃ.əri/

lechery

Meaning
excessive or offensive sexual desire; lustfulness
Example
The novel depicted the lechery of corrupt nobles.
C1 adjective /ˈmɒdʒʊlər/

modular

Meaning
Employing or involving a module or modules as the basis of design or construction.
Example
The modular design allows for easy customization and scalability.
C2 noun /ʃiːt fɪʃ/

Sheat-fish

Meaning
A large freshwater catfish with a broad flat head and long barbels
Example
The sheat-fish is one of the largest freshwater fish in South Asia.
C1 adjective /juːˈbɪkwɪtəs/

ubiquitous

Meaning
Existing or being everywhere at the same time.
Example
Social media has become ubiquitous among young people.
A2 verb /prɪˈpɛər/

prepare

Meaning
to make ready; to get something ready for use
Example
She needs to prepare dinner for her family.
C1 noun /ˈeɪ.nəs/

Anus

Meaning
the opening at the end of the digestive tract through which waste leaves the body
Example
The doctor examined the patient's anus during the medical checkup.
C1 noun /ˈsteɪl.meɪt/

stalemate

Meaning
A situation in which no progress can be made or no party can win.
Example
Negotiations ended in a stalemate.
B2 adverb /ɪkˈstɜrnəli/

externally

Meaning
in a way that relates to the outer surface or outside appearance
Example
The building appeared externally modern, but inside it was quite old-fashioned.
C2 noun, verb /ɡɔːl/

gall

Meaning
Annoyance, boldness, or to irritate.
Example
She had the gall to question his decision.
C1 adjective /ɔːˈstɪə/

austere

Meaning
Severe or strict in manner, attitude, or appearance; plain and simple.
Example
The monk lived an austere life in the mountains.
C2 verb /ˌrɛprɪˈhɛnd/

reprehend

Meaning
to express disapproval or criticism of someone or something
Example
The teacher reprehended the student for being dishonest.
C1 verb /ˈænɪmeɪt/

animate

Meaning
to bring to life or make lively; to create animation for films or cartoons
Example
The artist will animate the characters for the movie.
C2 noun ˈɡoʊldən ˈbʌtərflaɪ

Golden Butterfly

Meaning
A beautiful species of butterfly with golden coloration, symbolizing beauty and nature.
Example
The Golden Butterfly is a symbol of beauty and nature.
C1 noun /ˌprɒvəˈkeɪʃən/

provocation

Meaning
An action or statement that is intended to make someone angry or to cause a reaction.
Example
His rude comment was a clear provocation.
B1 verb ɪkˈspændɪŋ

expanding

Meaning
Becoming larger or more extensive; increasing in size, number, or importance.
Example
Expanding education opportunities helps reduce inequality.
B1 noun /ˈsiː.hɔːrs/

Sea-horse

Meaning
a small marine fish with segmented bony armor, an upright posture, and a curled prehensile tail
Example
The seahorse gracefully floated among the coral reefs.
B2 noun /ˈaɪ.bɔːl/

Eyeball

Meaning
the round part of the eye within the eyelids and socket
Example
The doctor examined his eyeball carefully.
C1 verb /ɪmˈpɒvərɪʃ/

impoverish

Meaning
To make someone poor or reduce the quality or richness of something.
Example
The long war impoverished the entire nation.
C1 verb /rɪˈkɔɪl/

recoil

Meaning
To suddenly spring back in fear, horror, or from force such as a gun's kickback.
Example
She recoiled at the sight of the snake.
B2 noun /ˈnæʃənəl ˈænθəm/

national anthem

Meaning
an official patriotic song of a country, performed at national events and ceremonies
Example
The national anthem was played before the international match.
A2 noun /dɪˈsɪʒ.ən/

Decision

Meaning
a conclusion or resolution reached after consideration; the action of deciding
Example
Making the right decision required careful analysis of all available options.
C1 adjective + noun ʌnˈpresɪdentɪd ˈnɒlɪdʒ

unprecedented knowledge

Meaning
Information or understanding that has never been obtained or achieved before.
Example
Artemis will provide unprecedented knowledge about the solar system.
C2 noun juːˈbɪkwɪti

ubiquity

Meaning
The fact of appearing everywhere or of being very common.
Example
The ubiquity of smartphones has transformed communication.
C1 adjective /əˈdɛpt/

adept

Meaning
Very skilled or proficient at something.
Example
She is adept at solving complex mathematical problems.
C2 verb /ˈdɒɡmətaɪz/

dogmatize

Meaning
To state opinions or beliefs as if they were absolute truths.
Example
The professor tended to dogmatize on political issues.
B2 noun /wɜːrd fɔːrˈmeɪʃən/

word formation

Meaning
the process by which new words are created or existing words are modified in a language
Example
Word formation helps learners understand how new vocabulary develops in English.
B2 noun /nɒsˈtæl.dʒə/

nostalgia

Meaning
A sentimental longing for the past, typically for a period or place with happy personal associations.
Example
Listening to old songs fills me with nostalgia.
C1 verb /ˈɡrætɪfaɪ/

gratify

Meaning
to give pleasure or satisfaction to someone
Example
It gratified him to know his work was appreciated.
C2 noun /ˌɪmbəˈsɪləti/

imbecility

Meaning
Extreme foolishness, stupidity, or weakness of mind.
Example
The plan was abandoned due to its sheer imbecility.
B2 noun /bɪˈliːvər/

believer

Meaning
a person who believes in something, especially a religious faith, idea, or principle
Example
She is a strong believer in hard work and honesty.
C2 adjective /ˈfɜːr.vɪd/

Fervid

Meaning
passionate; intensely enthusiastic; burning with emotion
Example
She gave a fervid speech about environmental protection.
C1 noun ɪˌlæˈstɪs.ə.ti

elasticity

Meaning
The responsiveness of demand or supply to changes in price.
Example
The elasticity of demand for luxury goods is high.
C2 verb /ˌɡeɪnˈseɪ/

gainsay

Meaning
To deny, contradict, or speak against.
Example
No one could gainsay the evidence presented in court.
C1 noun /ˈsɪlk.wɜːrm/

Silk-worm

Meaning
the caterpillar of a moth that produces silk fibers used to make silk fabric
Example
Silkworms feed on mulberry leaves to produce silk.
C1 noun /ˈtiːdiəm/

tedium

Meaning
the state of being tedious; monotony or boredom
Example
The tedium of long meetings often drains motivation.
C2 verb /dɪsˈkaʊntənəns/

discountenance

Meaning
To disapprove of or discourage something.
Example
The teacher strongly discountenanced cheating in exams.
C2 noun /proʊˈdʒɛnɪtər/

progenitor

Meaning
a direct ancestor; a person or thing that originates something
Example
Researchers traced the custom back to a common progenitor.
C1 noun /ˈskaʊndrəl/

scoundrel

Meaning
a dishonest or unscrupulous person; a villain
Example
That scoundrel cheated the old man out of his savings.
C1 adjective /ʌnˈtɛnəbl/

untenable

Meaning
not able to be maintained or defended against attack or objection
Example
The politician resigned when his position became untenable.
B2 verb /ˈskætər/

scatter

Meaning
to spread or throw around in different directions
Example
The wind scattered the leaves across the yard.
C1 noun /mɪsˈɡɪvɪŋz/

misgivings

Meaning
feelings of doubt or concern about the outcome or propriety of something
Example
She had serious misgivings about signing the contract.
B2 adjective /ˈvɜː.bəl/

verbal

Meaning
Relating to or in the form of words; spoken rather than written.
Example
Verbal communication is essential in most situations.
C2 adjective /ˌɪnkəmˈbʌstəbl/

incombustible

Meaning
Not capable of catching fire or burning.
Example
This material is incombustible and safe for construction.
A2 verb /ˈædvərˌtaɪz/

advertise

Meaning
to promote or publicize a product or service
Example
They advertise their products on television.
A2 noun /muːn/

Moon

Meaning
the natural satellite of the earth, visible at night by reflected light from the sun
Example
The full moon shines brightly in the night sky.
C1 adjective /əˈprɛs.ɪv/

Oppressive

Meaning
Harsh and authoritarian; overwhelming; causing distress; tyrannical;
Example
The oppressive heat made it difficult to work outside during the summer.
B1 adverb /ˈɑːf.tə.wərdz/

Afterwards

Meaning
at a later time; after an event or time that has already been mentioned
Example
We had dinner and afterwards we watched a movie.
C1 noun /tɪnt/

tint

Meaning
a slight shade or variation of a color
Example
The walls were painted white with a slight blue tint.
C2 noun /ˈɑːrbɪtər/

arbiter

Meaning
a person who has the authority to settle a dispute or decide an issue
Example
The principal acted as the arbiter in the conflict between the students.
C1 verb /ˈkwentʃɪŋ/

quenching

Meaning
The act of satisfying thirst or extinguishing something like fire.
Example
Drinking cold water was quenching her thirst.
C2 verb /ˈɛkspieɪt/

expiate

Meaning
to make amends for guilt or wrongdoing
Example
He tried to expiate his crime by helping the poor.
B1 verb /ˈpʌnɪʃ/

punish

Meaning
to give a penalty for wrongdoing; to discipline
Example
The teacher will punish students who cheat.
B2 verb /kɜːrb/

curb

Meaning
to restrain, control, or limit something
Example
The government took steps to curb inflation.
C1 noun /məˈdɜːrnəti/

modernity

Meaning
The quality or condition of being modern; up-to-date ideas, practices, or style.
Example
The city’s architecture reflects both tradition and modernity.
C2 verb /bɪˈteɪk/

betake

Meaning
to go or resort to a place or course of action, especially as a response; to apply oneself
Example
After dinner, she betook herself to her room to read.
B1 noun/adjective /ˈnɒvəl/

novel

Meaning
A long fictional narrative; also something new or unusual.
Example
She spent the weekend reading a historical novel.
B2 verb /rɪˈzɪst/

resist

Meaning
to oppose or fight against; to withstand
Example
He could not resist the temptation.
C2 adjective /ˈwæɡ.ɪʃ/

waggish

Meaning
playfully humorous or mischievous
Example
His waggish remarks made everyone laugh.
C2 noun /ˈpjuː.pɪ.lɪdʒ/

pupilage

Meaning
The state of being a pupil or under instruction.
Example
During his pupilage, he studied law under a senior barrister.
B1 noun /ˈvoʊtɪŋ/

voting

Meaning
the act of making a choice in an election or decision by casting a vote
Example
Voting is an important part of a democratic society.
B1 noun /ˈɑːrtwɜːrk/

artwork

Meaning
a piece of art, such as a painting, sculpture, or drawing
Example
The gallery displayed an impressive artwork by a local artist.
C1 adjective /ˈɒptɪməm/

optimum

Meaning
Most conducive to a favorable outcome; best.
Example
To achieve optimum results, we need to improve efficiency.
C2 adjective /ˈrɛkənˌdaɪt/ or /ˈrɛkəndaɪt/

recondite

Meaning
Little known or difficult to understand.
Example
The professor’s lecture was full of recondite theories.
B1 adjective /ˌoʊld ˈfæʃənd/

old-fashioned

Meaning
not modern; belonging to an earlier time
Example
He still wears an old-fashioned hat.
A2 noun /mɛs/

mess

Meaning
A state of disorder or untidiness.
Example
The kids left the room in a complete mess.
A2 adjective /ˈkeər.ləs/

Careless

Meaning
not giving sufficient attention or thought to avoiding harm or errors; negligent; inattentive
Example
His careless driving caused a serious accident on the highway.
C2 noun /ɒkˈteɪvoʊ/

octavo

Meaning
A size of book page resulting from folding a sheet of paper into eight leaves (sixteen pages).
Example
The old library contained rare octavo editions of Shakespeare.
C2 adjective /ˈdʒɪg.ərd/

Jiggered

Meaning
surprised or astonished; confused or puzzled
Example
I'll be jiggered if I know what happened here.
C1 adjective /ˌsʌb.təˈreɪ.ni.ən/

subterranean

Meaning
Existing, occurring, or done under the earth's surface.
Example
Subterranean water sources help sustain agriculture.
C1 noun ˈɛf.lu.ənt

effluent

Meaning
Liquid waste or sewage discharged into a river or the sea.
Example
Factory effluent contaminates nearby rivers and lakes.
C1 adjective /miːk/

Meek

Meaning
gentle and submissive; humble; patient
Example
Despite his power, he remained meek and humble.
C1 noun /ˈæmfɪˌθiətər/

amphitheater

Meaning
A large open circular or oval building with rising tiers of seats, used for public events.
Example
The concert was held in an ancient amphitheater.
B2 adjective /ɪnˈækjərət/

Inaccurate

Meaning
not correct; containing errors; wrong
Example
The weather forecast was inaccurate yesterday.
C1 noun /ˈpluː.mɪdʒ/

plumage

Meaning
the feathers covering a bird's body
Example
The peacock's plumage was vibrant and eye-catching.
A2 noun /ˈprɛzɪdənt/

president

Meaning
the elected head of a republican state
Example
The president addressed the nation last night.
C2 noun /ˈkæbəˌlɪzəm/

cabalism

Meaning
The doctrines, practices, or secretive dealings of a cabal.
Example
The historian wrote extensively about cabalism in the royal court.
A2 noun /ˈɪnfoʊ/

info

Meaning
information; knowledge or facts about something or someone
Example
She gave me all the info I needed for the meeting.
C1 adjective /ˈsɛm.ɪ.nəl/

seminal

Meaning
Strongly influencing later developments; highly original and influential.
Example
His seminal book changed the course of modern philosophy.
A2 adverb /bɪˈjɒnd/

Beyond

Meaning
further away than; exceeding; more than
Example
The mountains stretched beyond the horizon.
B2 verb /əbˈteɪn/

obtain

Meaning
to get or acquire something
Example
You need to obtain a visa before traveling abroad.
C1 noun /ˌeɪ.li.əˈneɪ.ʃən/

alienation

Meaning
The state of being isolated or estranged from a group or activity.
Example
The new policies created a sense of alienation among employees.
C2 adverb /ˌfɔːrθˈwɪθ/

Forthwith

Meaning
immediately; without delay; at once
Example
The manager ordered the employee to stop the unsafe practice forthwith.
B1 verb /briːð/

breathe

Meaning
To take air into the lungs and send it out again.
Example
It was hard to breathe in the smoky room.
C2 verb /ˈdʒaɪreɪt/

gyrate

Meaning
to move or spin quickly in circles
Example
The dancer gyrated wildly to the rhythm of the drums.
B2 noun /boʊst/

Boast

Meaning
an act of talking with excessive pride about one's achievements
Example
His constant boast about his wealth annoyed everyone.
B2 noun ˈtempəreri ˈsetlmənts

temporary settlements

Meaning
Short-term or provisional housing or living arrangements.
Example
Temporary settlements will aid lunar exploration.
C2 adjective /ˌɪnkɔːrˈpɔːriəl/

incorporeal

Meaning
lacking a physical body; not composed of matter; intangible
Example
Ghosts are often described as incorporeal beings.
C1 noun delˈteɪɪk ˈlændskeɪp

deltaic landscape

Meaning
A geographical area formed by sediment deposits at the mouth of a river, creating a triangular land formation.
Example
Bangladesh has a unique deltaic landscape.
B2 noun /ˈmɪz.ər.i/

Misery

Meaning
Great mental or physical suffering; extreme unhappiness or distress
Example
The poor family lived in complete misery after losing their home.
C1 verb /diːˈfjuːz/

defuse

Meaning
To make a situation less dangerous, tense, or explosive; to remove a fuse from a bomb.
Example
The negotiator helped defuse the tense situation.
B2 noun /ˌmɪs.ʌn.dəˈstæn.dɪŋ/

Misunderstanding

Meaning
A failure to understand something correctly; a disagreement or confusion between people
Example
The argument was caused by a simple misunderstanding.
C2 adjective /ˈlaʊtɪʃ/

loutish

Meaning
Clumsy, rude, or aggressive in behavior.
Example
His loutish remarks offended everyone at the meeting.
C2 noun /ˌɛksɪˈɡjuːɪti/

exiguity

Meaning
the quality of being scanty or meager in amount
Example
The exiguity of resources made the project difficult to complete.
C2 adjective /djuːˈplɪsɪtəs/

duplicitous

Meaning
Deceitful; deliberately deceptive or dishonest.
Example
The politician was criticized for his duplicitous statements.
C2 verb /trænsˈfjuːz/

transfuse

Meaning
to transfer blood or another fluid into a vein or body part; to instill a quality or idea into someone or something
Example
The doctor had to transfuse blood into the patient after the surgery.
C2 noun /ˈɪrɪtənsi/

irritancy

Meaning
the quality or state of causing irritation; legal or formal invalidation
Example
The constant noise became an irritancy to the neighbors.
B2 noun ˈmɛn.təl ˈfoʊ.kəs

mental focus

Meaning
The ability to concentrate deeply on a specific task or thought; mental concentration and attention.
Example
Meditation improves mental focus and cognitive performance.
C2 verb /ˈtɪtəleɪt/

titillate

Meaning
To excite or amuse, especially in a slightly sexual or playful way.
Example
The comedian's jokes titillated the audience.
B2 noun /sɪv/

Seive

Meaning
a utensil consisting of a wire or plastic mesh held in a frame, used for straining solids from liquids
Example
She used a sieve to separate the flour from lumps.
A2 adjective /ɡreɪ/

Grey

Meaning
having a color between black and white
Example
The grey clouds indicated that rain was coming.
C1 noun /ˈem.ɪ.nəns/

Eminence

Meaning
fame or recognized superiority; high rank or status
Example
The professor achieved eminence in the field of quantum physics.
B2 noun ɪˈmjuː.nɪ.ti

immunity

Meaning
The ability of an organism to resist a particular infection or toxin by the action of specific antibodies.
Example
A strong immunity protects against infections.
C2 adjective /ʌnˈkɒnʃənəbl/

unconscionable

Meaning
shockingly unfair or unreasonable
Example
The company made unconscionable profits from the crisis.
B1 verb /ˌɪntərˈækt/

interact

Meaning
to communicate or work together with someone or something
Example
Students interact with teachers during class discussions.
C2 adjective /ˈnæti/

natty

Meaning
Neat, stylish, and fashionable in appearance.
Example
He looked very natty in his new suit.
C1 noun /luːm/

Loom

Meaning
a machine for weaving cloth; to appear threatening or menacing
Example
The weaver worked at the loom to create beautiful fabrics.
A2 adjective /ˈʌɡ.li/

Ugly

Meaning
unpleasant or repulsive in appearance; morally reprehensible
Example
The old building looked ugly after years of neglect.
B1 adjective /ˈɡɔːr.dʒəs/

Gorgeous

Meaning
extremely beautiful; attractive; visually stunning
Example
The bride looked absolutely gorgeous.
C2 noun /ˈɑːriə/

aria

Meaning
a solo vocal piece with instrumental accompaniment, typically in an opera
Example
The soprano performed a moving aria during the second act.
B1 verb /breɪk/

brake

Meaning
to slow down or stop a vehicle by applying a brake
Example
He braked suddenly to avoid hitting the dog.
C2 verb /ˈblækˌbɔːl/

blackball

Meaning
to exclude someone socially or vote against their membership in a group or club
Example
He was blackballed from the club after the controversy.
B2 noun daɪˈmen.ʃən

dimension

Meaning
An aspect or feature of a situation, problem, or thing; a measurable extent.
Example
Renewable projects add a new dimension to urban planning.