cost-efficient
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B2 adjective /ˌkɒst.ɪˈfɪʃ.ənt/

cost-efficient

Meaning
Achieving maximum productivity with minimum wasted effort or expense.
Example
Cost-efficient solutions benefit industries.
C2 adjective /ˈdʌktaɪl/

ductile

Meaning
capable of being stretched into a thin wire without breaking; easily influenced
Example
Gold is a very ductile metal.
C2 verb /dɒf/

doff

Meaning
to take off an item of clothing, especially a hat, as a sign of respect
Example
He doffed his hat as the procession passed.
B1 noun /ˈspeʃəlɪst/

Specialist

Meaning
a person who has specialized knowledge or training in a particular area; an expert
Example
She consulted a heart specialist about her condition.
C2 noun juːˈbɪkwɪti

ubiquity

Meaning
The fact of appearing everywhere or of being very common.
Example
The ubiquity of smartphones has transformed communication.
C2 verb /ˈʌndərˌraɪt/

underwrite

Meaning
To guarantee financial support, especially by agreeing to cover losses or risks; in insurance, to assess and accept risks.
Example
The bank agreed to underwrite the company's new bond issue.
C1 verb /bɪˈhɛd/

behead

Meaning
to cut off a person's or animal's head; to remove the leader or most important part
Example
The historical account describes how the traitor was beheaded as punishment.
B2 noun /sfɪər/

sphere

Meaning
a round, three-dimensional shape that is perfectly symmetrical around its center; an area of activity or knowledge
Example
The Earth is almost a perfect sphere.
C1 adjective /oʊˈbiːs/

obese

Meaning
Extremely overweight; having an excessive amount of body fat.
Example
The doctor advised the obese patient to adopt a healthier lifestyle.
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 /ˈstæt.ɪk/

static

Meaning
Lacking in movement, action, or change; stationary.
Example
Static ideas hinder progress.
C1 adjective /ɪnˈvɪnsəbl/

invincible

Meaning
too powerful to be defeated or overcome
Example
The team seemed invincible after winning ten matches in a row.
C2 noun /ɪˈbʊliəns/

ebullience

Meaning
the quality of being cheerful, enthusiastic, and full of energy
Example
The teacher's ebullience inspired her students.
C2 noun /əˈspær.ə.ɡəs biːn/

Asparagus bean

Meaning
a long, thin green vegetable pod that grows on vines; also known as yard-long bean
Example
The asparagus bean grows up to three feet long and is commonly used in Asian cooking.
C2 adjective /ˈtriːzənəbl/

treasonable

Meaning
Relating to or involving the crime of treason.
Example
The general was accused of treasonable conduct.
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 verb /ˈseɪ.vər/

savor

Meaning
To enjoy something completely, especially by dwelling on it.
Example
He savored every bite of the delicious cake.
B2 adjective /ʌnˈiːzi/

Uneasy

Meaning
worried; anxious; uncomfortable; restless
Example
She felt uneasy about walking alone at night.
C2 verb /koʊˈæɡjəˌleɪt/

coagulate

Meaning
to cause a liquid, especially blood, to change into a solid or semi-solid state
Example
The blood quickly coagulated after the cut.
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.
C2 adjective /loʊˈkweɪʃəs/

loquacious

Meaning
tending to talk a great deal; very talkative
Example
The loquacious child entertained everyone with endless stories.
A2 noun, pronoun, verb /maɪn/

mine

Meaning
a place where minerals are dug from the ground; or something belonging to me
Example
The workers went deep into the mine to extract coal.
B2 verb /ɪnˈdeɪndʒər/

endanger

Meaning
To put someone or something at risk or in danger.
Example
Cutting down forests can endanger many species of animals.
A1 adjective /ˈiːzi/

easy

Meaning
not difficult; requiring little effort
Example
The exam was surprisingly easy.
C1 noun /ˌpæn.əˈræm.ə/

panorama

Meaning
An unbroken view of the whole region surrounding an observer.
Example
From the hilltop, we enjoyed a breathtaking panorama of the city.
B2 adjective /ˈhevənli/

Heavenly

Meaning
relating to heaven; extremely pleasant or beautiful
Example
The chocolate cake had a heavenly taste that melted in my mouth.
B1 adjective /ˈfrʌstreɪtɪd/

frustrated

Meaning
feeling annoyed or upset because of inability to achieve something
Example
She felt frustrated after failing the exam.
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.
C2 noun /ˈhɔːrn.bɪl/

Hornbill

Meaning
a large tropical bird with a large curved beak and often a horn-like projection
Example
The colorful hornbill perched on the highest branch.
C1 noun/adjective /ˈlɛzbiən/

lesbian

Meaning
a woman who is romantically or sexually attracted to other women
Example
She is a proud lesbian and advocates for equal rights.
B1 adjective /ˈfriːkwənt/

Frequent

Meaning
happening often; occurring regularly; repeated
Example
He makes frequent visits to his grandmother.
A2 verb /ˈdʌbəl/

double

Meaning
to make twice as much in size, number, or amount
Example
The company hopes to double its profits this year.
B2 noun/verb rɪˈfɔːm

reform

Meaning
Make changes in (something, typically a social, political, or economic institution or practice) in order to improve it.
Example
Reform in the education system was a priority.
C1 verb /trʌdʒ/

trudge

Meaning
To walk slowly and with heavy steps, typically because of exhaustion or harsh conditions.
Example
They had to trudge through the snow to reach the village.
B2 noun /ˌpɪə.riˈɒd.ɪ.kəl/

periodical

Meaning
a magazine or journal published at regular intervals
Example
She subscribed to a science periodical.
C2 adjective /kənˈfɔːrməbl/

conformable

Meaning
Capable of being adapted or consistent with something; compliant.
Example
His actions were conformable to the rules of the institution.
C1 adjective /swɑːv/

suave

Meaning
charming, confident, and elegant, often in a smooth or polished way
Example
He was a suave gentleman who impressed everyone at the party.
C1 verb /ˈsɪn.θə.saɪz/

synthesize

Meaning
To combine a number of things into a coherent whole.
Example
Scientists synthesize new compounds for medical research.
A1 noun /wɒnt/

Want

Meaning
lack or shortage of something; poverty or need
Example
There is a want of fresh water in the drought-affected areas.
C1 adjective /ˌʌnəbˈtruːsɪv/

unobtrusive

Meaning
not attracting attention; blending in without causing notice
Example
The security cameras are designed to be unobtrusive.
C1 verb /ˈmɪt.ɪ.ɡeɪt/

mitigate

Meaning
To make less severe, serious, or painful; to lessen the severity of damage or harm.
Example
Proper planning can mitigate financial risks.
A2 noun /ˈləʊɡəʊ/

logo

Meaning
a symbol or other small design adopted by an organization to identify its products, uniform, vehicles, etc.
Example
The company's logo was redesigned to reflect its new image.
C2 adjective /ˌɪrɪˈkɒnsɪləbl/

irreconcilable

Meaning
impossible to make compatible or bring into harmony; unable to resolve differences
Example
The couple separated due to irreconcilable differences.
C2 adjective /ˌtɔːtəˈlɒdʒɪkəl/

tautological

Meaning
expressing something by repeating the same idea in different words; redundant
Example
Saying 'free gift' is considered tautological.
C2 adjective /ˌdɛbəˈnɛr/

debonair

Meaning
confident, stylish, and charming, typically referring to a man
Example
He looked debonair in his tuxedo at the gala.
B2 adverb /ˈfræŋkli/

Frankly

Meaning
honestly; openly; in a direct manner
Example
Frankly, I think this plan needs more consideration.
C1 noun /mɪˈrɑːʒ/

Mirage

Meaning
An optical illusion caused by atmospheric conditions, especially in deserts
Example
The travelers saw a mirage of water in the desert.
C2 noun /ˈæntɪˌtʃeɪmbər/

antechamber

Meaning
a small room serving as an entry to a larger one
Example
The guests waited in the antechamber before being admitted to the hall.
B1 noun /ˈvæk.siːn/

Vaccine

Meaning
a substance that is put into the body to prevent a disease
Example
The COVID-19 vaccine has helped reduce severe illness.
A1 preposition/adverb/adjective/noun /ˌɪnˈsaɪd/

inside

Meaning
Situated within something; the inner part of something.
Example
She waited inside the house until the rain stopped.
C2 adjective /ˈfæsaɪl/

Facile

Meaning
easily achieved; superficial; lacking depth
Example
His facile explanation didn't address the real problem.
B2 noun /səˈspens/

Suspense

Meaning
a feeling of excited or anxious uncertainty about what will happen
Example
The movie kept us in suspense until the very end.
A2 noun /ɡluː/

Glue

Meaning
a sticky substance used for sticking objects or materials together; an adhesive
Example
The children used white glue to attach the colorful paper pieces to their art project.
C1 noun/adjective/verb /bʌf/

buff

Meaning
A fan or enthusiast; also to polish or shine something.
Example
He is a movie buff who watches films every weekend.
A2 noun /koʊtʃ/

coach

Meaning
A person who helps improve others' skills or knowledge.
Example
The football coach motivated his team before the match.
C1 noun /ˈnjʊə.rəʊ.trænsˌmɪt.ərs/

neurotransmitters

Meaning
Chemical messengers that transmit signals across nerve synapses, affecting mood, behavior, and cognitive functions.
Example
Serotonin and dopamine are key neurotransmitters affecting mood.
C2 noun /ˌkɒzməˈpɒlɪtənɪzəm/

cosmopolitanism

Meaning
the ideology that all human beings belong to a single community
Example
Cosmopolitanism promotes respect and understanding across cultures.
B2 noun /ˈhedʒhɒɡ/

Hedge-hog

Meaning
a small mammal with a spiny coat that can roll into a ball for defense
Example
The hedgehog rolled into a ball when it felt threatened.
B2 verb rɪˈstɔːr

restore

Meaning
To bring back to a former or original state; to reinstate.
Example
Restoring the tradition of student politics is necessary.
C2 adjective /pəˈluːsɪd/

pellucid

Meaning
Transparently clear; easy to understand.
Example
The lake water was so pellucid that you could see the stones at the bottom.
B2 noun /fluːt/

Flute

Meaning
a musical wind instrument with holes along its length that is played by blowing across a hole at one end
Example
He played a sweet melody on his flute.
B1 noun /ˈnɑn.sens/

Nonsense

Meaning
words or language that have no meaning; foolish or unacceptable behavior
Example
Stop talking nonsense and be serious!
B1 verb /kleɪm/

claim

Meaning
to assert ownership; to state as fact
Example
He claims to be the rightful owner.
B1 noun ˈtʃæt.dʒiː.piː.tiː

ChatGPT

Meaning
A language-based artificial intelligence model designed for conversational interactions.
Example
ChatGPT helps users generate human-like text efficiently.
C2 noun, verb /ˌpæm.fləˈtɪər/

pamphleteer

Meaning
a person who writes or distributes pamphlets, often to promote a political or social cause
Example
In the 18th century, many pamphleteers influenced public opinion.
C2 adjective /ˈprɒɡnəθəs/

prognathous

Meaning
Having jaws that project forward beyond the rest of the face.
Example
The fossil displayed a distinctly prognathous skull structure.
C1 adjective /ˈlɛdʒəbl/

legible

Meaning
clear enough to read
Example
Her handwriting was barely legible.
C1 noun /ˈhɜː.mɪt/

Hermit

Meaning
a person living in solitude as a religious discipline; someone who withdraws from society
Example
The old hermit lived alone in a small cabin deep in the mountains, away from civilization.
C1 noun /ˈsʌnˌdaʊn/

sundown

Meaning
the time in the evening when the sun goes below the horizon
Example
We planned to reach the village before sundown.
B2 noun /plænˈteɪʃən/

plantation

Meaning
a large area of land where crops are grown, often for commercial purposes
Example
The sugarcane plantation stretched for miles across the valley.
C1 noun /ˈsaɪnəs/

sinus

Meaning
A cavity within a bone or tissue, especially those in the bones of the face connected with the nasal cavities.
Example
He suffered from a sinus infection that caused headaches.
A1 adjective/adverb /ɪˈnʌf/

enough

Meaning
as much or as many as required
Example
We have enough food for everyone.
A1 noun /θɪŋ/

thing

Meaning
an object, idea, or matter that is being referred to or dealt with
Example
This is the thing I was looking for.
A2 noun əˈɡriː.mənt

agreement

Meaning
A negotiated arrangement between parties as to a course of action.
Example
The agreement was accepted by all countries.
C2 verb /ˈmɒrəlaɪz/

moralize

Meaning
To comment on issues of right and wrong, often with an air of superiority.
Example
He tends to moralize about other people's choices.
C2 noun /ˈmɛtəfɔːrm/

metaphorm

Meaning
A coined or rare term sometimes used to describe a hybrid form of metaphor and form in literature or art.
Example
The poet introduced a metaphorm to blend imagery with structure.
A1 pronoun /ɪts/

its

Meaning
Belonging to or associated with a thing previously mentioned.
Example
The company changed its logo last year.
C1 verb /dɪsˈsætɪsfaɪ/

dissatisfy

Meaning
to fail to please or meet expectations; to make someone unhappy
Example
The poor service dissatisfies many customers.
A2 noun /nʌt/

nut

Meaning
a hard-shelled fruit that contains a seed, or a small metal piece used in machinery
Example
She ate a peanut, which is a type of nut.
C1 adjective draʊt rɪˈzɪs.tənt

drought-resistant

Meaning
Able to survive and grow despite limited water availability or drought conditions.
Example
Drought-resistant crops can survive in arid conditions.
B1 noun /ˈpɜː.sən.əl ˈdeɪ.tə/

personal data

Meaning
Information that relates to an individual's private, sensitive, or identifiable data
Example
Protecting personal data is crucial in the digital age.
C1 noun /ɡlɔːs/

Gloss

Meaning
a shiny or lustrous surface finish; a superficially attractive appearance; lip gloss
Example
She applied a clear gloss to her lips to give them a shiny, healthy appearance.
B2 adjective /ˈwɜːrθˌwaɪl/

worthwhile

Meaning
worth the time, effort, or money spent; valuable
Example
Volunteering at the shelter was a worthwhile experience.
A1 noun /bæk/

Back

Meaning
the rear surface of the human body from the shoulders to the hips; the spine
Example
She hurt her back while lifting heavy boxes.
C1 verb /ˈnʌrɪʃ/

nourish

Meaning
To provide with food or other substances necessary for growth, health, and good condition
Example
Good books nourish the mind.
B2 noun /ˈkæriər/

carrier

Meaning
A person or thing that carries, transports, or conveys something; also an organization that provides transport services.
Example
The airline is the largest carrier in the country.
C2 verb /ˈkʌzən/

cozen

Meaning
to deceive, cheat, or trick someone
Example
He cozened the old man out of his money.
B2 noun /ˈsɪnəmən/

Cinnamon

Meaning
aromatic spice obtained from the inner bark of several tree species
Example
Cinnamon is often used in baking and desserts.
C1 adjective /ˈɡæst.li/

ghastly

Meaning
Causing great horror or fear; very unpleasant.
Example
The crime scene was a ghastly sight.
C1 noun /ˈbed sted/

Bed stead

Meaning
the framework of a bed; a bed frame without bedding
Example
The wooden bed stead was very sturdy.
A2 noun /ʃer/

Share

Meaning
a portion of something; a part or portion of a larger amount
Example
Each partner received an equal share of the company profits.
C1 adjective /ˈmɜːki/

murky

Meaning
Dark, gloomy, and difficult to see through; obscure.
Example
We avoided swimming in the murky river.
C2 noun /ˈɛpənɪm/

eponym

Meaning
A person after whom a discovery, invention, place, or other thing is named.
Example
Sandwich is an eponym named after the Earl of Sandwich.
C1 noun /məˈnɒɡəmi/

monogamy

Meaning
The practice of being married to or in a relationship with only one person at a time.
Example
Many cultures encourage monogamy as the ideal form of marriage.
C2 verb, noun /ˈkweɪvər/

quaver

Meaning
To shake or tremble in speaking, typically through nervousness or emotion.
Example
Her voice quavered as she spoke before the crowd.
B1 verb /əˈpruːv/

approve

Meaning
to officially agree to or accept something; to give permission
Example
The committee will approve the new policy tomorrow.
B2 verb /skreɪp/

scrape

Meaning
to remove or damage the surface of something by rubbing or scratching; to collect something by effort
Example
He scraped his knee while playing football.
C1 adjective /trænsˈfɜːrəbəl/

Transferable

Meaning
able to be moved from one place to another; able to be given to someone else
Example
The skills you learn here are transferable to other jobs.
C2 noun /aɪər/

ire

Meaning
intense anger or rage
Example
The new policy provoked the ire of the employees.
C2 noun dʒʊˈdɪʃəsnɪs

judiciousness

Meaning
Having, showing, or done with good judgment or sense.
Example
Her judiciousness in making decisions was appreciated.
C2 noun /ˈsɔː.dər/

Sawder

Meaning
flattering or wheedling talk; soft soap
Example
His sawder couldn't convince anyone of his sincerity.
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.
C2 noun /ˈpæntəˌskoʊp/

pantoscope

Meaning
An optical instrument that provides a wide or panoramic view.
Example
The scientist used a pantoscope to observe the entire horizon.
B2 conjunction /wɛərˈæz/

whereas

Meaning
used to introduce a contrast or comparison between two facts
Example
She prefers tea, whereas he likes coffee.
C1 noun /ˈpoʊlstər/

pollster

Meaning
a person or organization that conducts surveys to gauge public opinion
Example
The pollster predicted a close election outcome.
B1 noun/verb /ˈmætərz/

matters

Meaning
important topics, concerns, or issues; as a verb, to be of importance or significance
Example
What she thinks really matters to me.
B1 noun /ˈsɛt ʌp/

set-up

Meaning
The arrangement or organization of something; a planned structure or scheme
Example
The company presented a new set-up for the office layout.
C2 noun /slaɪt/

sleight

Meaning
Skill or dexterity, especially in performing tricks.
Example
The magician amazed the crowd with his sleight of hand.
C1 adverb /ˈsɜːrtʃɪŋli/

searchingly

Meaning
In a way that seems to look for hidden meanings or truth.
Example
She looked at him searchingly, hoping for an honest answer.
C1 verb /ɪkˈspend/

expend

Meaning
to use up or consume; to spend energy or resources
Example
He expended all his energy on the project.
C2 noun /ˌmɪsˈtʃæns/

mischance

Meaning
An unfortunate accident or event; bad luck.
Example
By mischance, he missed the last train home.
C1 verb rɪˈplɛn.ɪʃ

replenish

Meaning
Fill something up again.
Example
Drinking water helps replenish lost fluids in the body.
B2 adverb /ˈklɒkwaɪz/

Clockwise

Meaning
in the direction that clock hands move; in a circular direction from left to right
Example
Turn the valve clockwise to tighten it.
C1 verb /ˈæn.ɛks/

annex

Meaning
To take control of a territory and add it to one's own.
Example
The empire annexed the neighboring kingdom after the war.
B2 adjective /ˈθɔːtfəl/

thoughtful

Meaning
showing careful consideration or attention
Example
She gave a thoughtful response to every question asked.
C2 adjective /ˈleɪ.tɪʃ/

latish

Meaning
Somewhat late; occurring or arriving later than usual but not very late.
Example
We arrived latish to the party but still caught most of the fun.
C1 noun /dɪˌlɪb.əˈreɪ.ʃənz/

deliberations

Meaning
Careful consideration and discussion before making decisions.
Example
Deliberations on sustainability continued for hours.
C2 noun /æmˈbroʊʒə/

ambrosia

Meaning
The food of the gods in classical mythology; something extremely pleasing to taste or smell.
Example
The dessert was so delicious that it tasted like ambrosia.
A2 adverb /əˈpɑːrt/

Apart

Meaning
separately; away from each other; in pieces
Example
The two buildings are far apart from each other.
C2 noun /dʒeɪp/

jape

Meaning
A practical joke or humorous remark.
Example
He enjoyed a harmless jape with his friends.
B1 verb /dɪˈfiːt/

Defeat

Meaning
to win a victory over; to overcome in battle or competition
Example
The army managed to defeat the enemy forces.