invaluable
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C1 adjective /ɪnˈvæljʊəbl/

invaluable

Meaning
Extremely useful or indispensable.
Example
Her advice proved invaluable to my success.
B2 noun /ˈsɜːrkɪt/

circuit

Meaning
A roughly circular line, route, or movement that starts and ends at the same place; also an electrical pathway.
Example
The runners completed the circuit around the park.
C2 noun /ˈprɒsɪlaɪt/

proselyte

Meaning
A person who has converted from one belief, opinion, or religion to another.
Example
She became a proselyte after converting to a new faith.
C2 noun /ˈmaʊntɪˌbæŋk/

mountebank

Meaning
A charlatan or trickster who deceives others, often for personal gain.
Example
The crowd was fooled by the mountebank’s false promises.
C2 noun /briːtʃ/

breech

Meaning
The back part of a gun barrel; a position of a baby in the womb where the buttocks or feet come out first at birth.
Example
The rifle was loaded through the breech.
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.
A2 adjective /streɪndʒ/

strange

Meaning
unusual or not normal
Example
It was strange to see him at the party after so long.
C2 noun /ˈhɜːrmɪtɪdʒ/

hermitage

Meaning
A secluded residence or retreat, often for a hermit or religious recluse.
Example
The monk spent years in a hermitage deep in the forest.
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 /ˈæntɪk/

antic

Meaning
a playful, funny, or silly act or gesture
Example
The children laughed at the clown’s antics.
C2 verb /ˈæntɪdeɪt/

antedate

Meaning
to be earlier in time; to assign a date earlier than the actual one
Example
The manuscript antedates the modern printing press.
B2 noun /ˈdiː.fekt/

Defect

Meaning
a shortcoming, imperfection, or lack; a fault or flaw in something
Example
The manufacturing defect caused the product to fail after only one week.
B2 noun ˈtrækɪŋ ˈprɒɡrɛs

tracking progress

Meaning
The process of monitoring and evaluating advancement towards goals or objectives.
Example
Regular tracking progress helps in achieving long-term goals.
C2 adjective /ˌækrəˈmætɪk/

achromatic

Meaning
without color; free from color
Example
The designer chose an achromatic palette of black, white, and gray.
B2 adverb /ɪmˈpɔːtəntli/

importantly

Meaning
in a way that is of great significance or value
Example
Importantly, the report highlights the need for immediate action.
C2 adjective /rɪˈprɛsəbl̩/

repressible

Meaning
Capable of being restrained or suppressed.
Example
The movement proved to be hardly repressible.
A1 noun/adjective/preposition /pɑːst/

past

Meaning
the time before the present; gone by in time
Example
He often thinks about his past mistakes.
B2 adjective /ˈkrɒnɪk/

chronic

Meaning
Lasting for a long time or constantly recurring, often describing illness.
Example
She suffers from chronic back pain.
C1 verb /məˈruːn/

maroon

Meaning
to leave someone trapped and isolated, especially on an island
Example
The sailors were marooned on a deserted island.
C1 verb /əˈluːd/

allude

Meaning
To refer to something indirectly or casually.
Example
The professor alluded to Shakespeare during the lecture.
C2 adjective /ˈtɔɪl.səm/

toilsome

Meaning
Involving hard or exhausting work; laborious.
Example
The workers had a toilsome day in the hot sun.
C1 verb /daɪˈluːt/

dilute

Meaning
To make a liquid thinner or weaker by adding water or another solvent.
Example
You should dilute the juice with water before serving it to children.
B1 verb /pəʊs(t)ˈpəʊn/

postpone

Meaning
to delay something to a later time
Example
The meeting was postponed until next week.
C1 verb /ˈmɒd.jʊ.leɪt/

modulate

Meaning
To change the strength, tone, or pitch of something; to adjust or regulate.
Example
A good speaker knows how to modulate their voice.
B2 noun /ˈsʌm.ɪt/

summit

Meaning
A high-level meeting between leaders, especially of governments; a conference.
Example
The summit addressed pressing global issues.
C2 noun /rɪˈɡætə/

regatta

Meaning
A sporting event consisting of a series of boat or yacht races.
Example
The annual regatta attracted competitors from around the world.
B2 noun /ɪˈluː.ʒən/

Illusion

Meaning
a thing that is or is likely to be wrongly perceived or interpreted; a false idea or belief
Example
The magician created a spectacular illusion that made the elephant appear to vanish.
C1 adjective /ˈwɜːrkəbəl/

Workable

Meaning
capable of being done or put into effect; practical
Example
We need a workable solution to solve this problem quickly.
C1 adjective /əˈkʌlt/

occult

Meaning
Relating to mysterious, supernatural, or magical powers and practices.
Example
She had always been fascinated by the occult and its hidden knowledge.
B2 noun /haɪˈdreɪʃən/

hydration

Meaning
The process of providing an adequate amount of liquid to bodily tissues.
Example
Proper hydration is essential for maintaining body functions.
B1 verb /ˈɒpəreɪt/

operate

Meaning
to function; to control or manage; to perform surgery
Example
The surgeon will operate on the patient tomorrow.
C2 verb /ˈdɛpjʊˌtaɪz/

deputize

Meaning
To appoint someone as a deputy; to act as a substitute or representative.
Example
The sheriff decided to deputize several locals to help maintain order.
C2 noun /ɪnˈtɛmpərəns/

intemperance

Meaning
Lack of moderation or self-control, especially with drinking or eating.
Example
His intemperance in drinking ruined his health.
C1 adjective /ɪnˈstɪŋk.tɪv/

instinctive

Meaning
Based on instinct; done without conscious thought; natural and automatic.
Example
His instinctive reaction saved his life.
C2 noun /dɪˈklɪvɪti/

declivity

Meaning
a downward slope of ground
Example
They carefully climbed down the declivity of the hill.
C1 noun /rɪˈsaɪtər/

reciter

Meaning
a person who recites or repeats something aloud from memory, especially poetry, prayers, or formal texts
Example
The reciter delivered the poem with clarity and emotion.
B2 noun /raɪˈnɒs.ər.əs/

Rhinoceros

Meaning
a large, heavy animal with thick skin and one or two horns on its nose
Example
The rhinoceros charged through the grassland.
C2 noun /ˈbroʊmaɪd/

bromide

Meaning
A trite or unoriginal idea or remark; also a chemical compound of bromine.
Example
His speech was full of old bromides about hard work.
A2 noun/verb /meɪl/

mail

Meaning
Letters, packages, or email messages sent or delivered to someone.
Example
I received an important letter in the mail.
B2 verb dɪsˈrʌpt

disrupt

Meaning
To interrupt or disturb the normal progress or activity of something.
Example
Individual pursuits disrupt social harmony.
B2 verb /əˈkjuːmjəleɪt/

accumulate

Meaning
to gather or collect things gradually over time
Example
She managed to accumulate a small fortune through wise investments.
C1 noun /əˈbɪs/

abyss

Meaning
a deep, immeasurable space, chasm, or void; something seemingly without end
Example
The climbers looked down into the dark abyss below.
B2 verb /ʃrɪŋk/

shrink

Meaning
to become smaller in size; to draw back in fear
Example
The sweater shrank after washing in hot water.
C1 adjective prəˈtræk.tɪd

protracted

Meaning
Lasting for a long time or longer than expected or usual.
Example
The negotiations were protracted over months.
C1 noun /ˌɪnækˈtɪvɪti/

inactivity

Meaning
the state of not being active physically or mentally; lack of action
Example
Prolonged inactivity can negatively affect both physical and mental health.
C2 noun /ˈkærəˌpeɪs/

carapace

Meaning
the hard shell covering the back of some animals like turtles and crabs
Example
The turtle withdrew into its carapace for protection.
C1 verb /ˈmiː.di.eɪt/

mediate

Meaning
To act as an intermediary in bringing about agreement or reconciliation between parties.
Example
She was asked to mediate between the two companies.
B2 adjective /skeərs/

Scarce

Meaning
rare; not easily found; existing in small quantities
Example
Fresh water is becoming increasingly scarce in desert regions.
B2 noun, verb /rɪər/

rear

Meaning
the back part of something; to bring up or raise children or animals
Example
The mother cat reared her kittens in a quiet corner.
B1 noun ˌen.dʒɪˈnɪə.rɪŋ

engineering

Meaning
The application of scientific and mathematical principles to design, build, and maintain structures, machines, or systems.
Example
Genetic engineering transforms agricultural practices.
C2 adjective /ʌnˈblʌʃɪŋ/

Unblushing

Meaning
showing no shame or embarrassment; boldly shameless
Example
He told the unblushing lie without any hesitation.
A2 noun /skwɛə(r)/

square

Meaning
a shape with four equal straight sides and four right angles
Example
The table has a square shape.
C2 verb /ɡɔːk/

gawk

Meaning
To stare openly and rudely.
Example
Tourists gawked at the celebrity walking down the street.
C2 noun /wɛlt/

welt

Meaning
A raised mark on the skin, usually from a blow or allergic reaction.
Example
He had a red welt on his arm after the bee sting.
A2 noun /ˈtɛlɪfəʊn/

telephone

Meaning
a system for transmitting voices over a distance using wire or radio, typically for communication.
Example
I need to make a telephone call to my friend.
B2 noun /əbˈdʒek.ʃən/

Objection

Meaning
an expression of disagreement or disapproval; a reason for disagreeing
Example
The lawyer raised an objection during the trial.
C1 noun /veɪl/

vale

Meaning
A valley, often used in a poetic or literary sense.
Example
The village lay hidden in a quiet green vale.
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 adjective /ˈæŋ.ɡjə.lər/

Angular

Meaning
having sharp corners or edges; relating to angles
Example
The building has an angular design with sharp corners.
C2 adjective /ˌtaɪtˈfɪstɪd/

tightfisted

Meaning
unwilling to spend money; stingy
Example
He is so tightfisted that he refuses to tip at restaurants.
A2 adjective /waɪld/

Wild

Meaning
living in natural conditions; not domesticated or cultivated; uncontrolled
Example
We saw wild animals in the forest.
C2 verb /ˈblʌstər/

bluster

Meaning
to speak loudly in an aggressive or threatening way, often without real power
Example
The manager blustered about firing people but did nothing.
B1 adjective pəˈlɪtɪkəl

political

Meaning
Relating to the government or public affairs of a country; relating to politics or political parties.
Example
The political agenda included autonomy.
C2 adjective /bəˈθɛt.ɪk/

bathetic

Meaning
displaying insincere or trivial emotion; producing an unintended ridiculous effect through sudden change from serious to silly
Example
The movie's ending was unintentionally bathetic rather than tragic.
B2 adjective /ˈstɛdi/

steady

Meaning
firm, stable, and not likely to change suddenly
Example
He kept his hand steady while painting the picture.
C1 noun /ˈɡæloʊz/

gallows

Meaning
A structure used for hanging criminals who have been sentenced to death.
Example
The criminal was led to the gallows at dawn.
B1 verb /ɪnˈɡeɪdʒ/

engage

Meaning
To participate or become involved in; to attract or hold attention.
Example
The teacher tried to engage the students in the discussion.
C2 noun /daɪn/

dyne

Meaning
A unit of force in the centimeter-gram-second (cgs) system equal to 10⁻⁵ newtons.
Example
The physicist measured the force in dynes.
A2 noun /ˈsuːt.keɪs/

suitcase

Meaning
A portable rectangular container for carrying clothes and personal items when traveling
Example
She packed her clothes into a suitcase for the trip.
A2 adverb /ˈnaʊədeɪz/

nowadays

Meaning
At the present time; in contrast with the past.
Example
Nowadays, many people prefer shopping online.
C1 noun /ˈɛkstrəˌvɜːrt/

extrovert

Meaning
a person who is outgoing, sociable, and energized by being around other people
Example
As an extrovert, she enjoys meeting new people at social events.
B1 noun æmˈbɪʃ.ən

ambition

Meaning
A strong desire to do or achieve something, typically requiring determination and hard work.
Example
Their ambition is to build a quantum computer.
B2 adjective /mæɡˈnɛtɪk/

magnetic

Meaning
having the power to attract metal objects or to attract people or things in a strong way
Example
The magnetic field of the Earth protects us from harmful solar radiation.
B2 verb /ˈsprɪŋkəl/

sprinkle

Meaning
to scatter small drops or particles of a substance over a surface
Example
She sprinkled sugar on top of the cake.
B1 noun /tiːn/

teen

Meaning
a person aged between 13 and 19 years.
Example
He's a teenager who loves sports.
C2 noun /mɪˈsɑːdʒɪnɪst/

misogynist

Meaning
A person who dislikes, despises, or is strongly prejudiced against women.
Example
Many condemned his speech as the words of a misogynist.
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.
A1 noun /roʊd/

road

Meaning
a wide way leading from one place to another
Example
We drove along the road to the village.
A2 noun /ˈɛər.laɪn/

airline

Meaning
A company that provides regular flights for passengers and goods.
Example
The airline announced a discount on international tickets.
C2 verb /ʌnˈjoʊk/

unyoke

Meaning
To release from a yoke or to free from restraint or obligation.
Example
The farmer unyoked the oxen after a long day of work.
A1 noun /hæt/

Hat

Meaning
a covering for the head, typically with a brim and worn outdoors
Example
He always wears a hat when working in the garden.
C2 verb /ɪnˈsteɪt/

instate

Meaning
To set up in position, office, or authority.
Example
The board decided to instate her as the new director.
C1 noun ˌæɡ.rəʊˈkem.ɪ.kəl

agrochemical

Meaning
A chemical product used in agriculture, especially a pesticide or fertilizer.
Example
Excessive use of agrochemicals can degrade soil quality.
C1 noun /ˈnɔːrmən/

Norman

Meaning
A member of a people of mixed Scandinavian and Frankish origin who settled in Normandy, or relating to their culture.
Example
The Normans conquered England in 1066.
C2 adjective /ˈek.wə.bəl/

Equable

Meaning
calm and even-tempered; not easily disturbed
Example
He maintained an equable temperament throughout the crisis.
B2 adjective /sɔːr/

sore

Meaning
painful or aching, usually in a specific part of the body
Example
After the long run, my legs were sore.
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.
A1 pronoun /miː/

me

Meaning
Used by a speaker to refer to themselves as the object of a verb or preposition.
Example
She gave me a beautiful gift.
B2 noun /ɪˈlɛktrɪk drɪl/

Electric drill

Meaning
A power tool used for drilling holes in various materials
Example
He used an electric drill to make holes in the wall for hanging pictures.
B2 noun /ˌɛkspɜːˈtiːz/

expertise

Meaning
Expert knowledge or skill in a particular area.
Example
His expertise in graphic design is widely recognized.
B2 noun /ˈpɜr.mə.nəns/

Permanence

Meaning
the state or quality of lasting or remaining unchanged indefinitely; enduring nature
Example
The permanence of the stone monument impressed all visitors.
B2 adjective /əˈbrʌpt/

abrupt

Meaning
Sudden or unexpected, often without warning.
Example
The car came to an abrupt stop in the middle of the road.
C2 verb /ɪnˈsnɛər/

ensnare

Meaning
to catch or trap, often by trickery or deceit
Example
The hunter ensnared the rabbit with a net.
C2 noun /pʌɡˈnæsɪti/

pugnacity

Meaning
A natural disposition to be combative or aggressive.
Example
The coach admired the player's pugnacity on the field.
B2 adjective ədˈmɪn.ɪ.strə.tɪv

administrative

Meaning
Relating to the running of a business, organization, etc.; concerned with or relating to management or administration.
Example
Administrative reforms improve efficiency.
B2 noun /præŋk/

prank

Meaning
A trick that is intended to be funny but not harmful.
Example
They played a harmless prank on their friend during the party.
C2 noun /ˌfaɪ.təʊˈkem.ɪ.kəlz/

phytochemicals

Meaning
Natural chemical compounds produced by plants that provide health benefits beyond basic nutrition, often having antioxidant properties.
Example
Phytochemicals in green tea help reduce inflammation.
B2 verb /daɪˈdʒest/

digest

Meaning
to break down food in the body; to think about and understand
Example
It takes time to digest a heavy meal.
B1 adverb /əˈprɒk.sɪ.mət.li/

approximately

Meaning
used to show that something is almost, but not completely, accurate or exact
Example
The journey takes approximately three hours.
C2 noun məˌnɒp.ə.laɪˈzeɪ.ʃən

monopolization

Meaning
The process by which a company gains exclusive control over a commercial activity.
Example
The monopolization of industries can limit consumer choices.
B2 verb /rɪˈfreʃ/

refresh

Meaning
to make fresh again; to restore energy
Example
A cold drink refreshes me on hot days.
A2 noun /kraʊd/

crowd

Meaning
a large number of people gathered together
Example
A huge crowd gathered to watch the concert.
A2 noun ˈɑːrɡjumənt

argument

Meaning
A reason or set of reasons given with the aim of persuading others that an action or idea is right or wrong.
Example
His argument was based on majority.
A2 adverb /ˈbjuːtɪfəli/

beautifully

Meaning
in a beautiful or pleasing manner; excellently or skillfully
Example
She sang beautifully at the concert.
B2 adverb /drəˈmætɪkli/

dramatically

Meaning
in a sudden, striking, or exaggerated way
Example
Sales increased dramatically after the campaign.
B2 adjective ˈɡluːmi

gloomy

Meaning
Dark or poorly lit; depressing or pessimistic.
Example
The atmosphere suddenly turned gloomy.
C2 noun /sɪˈrɒkoʊ/

sirocco

Meaning
A hot, dry wind blowing from North Africa across the Mediterranean to southern Europe.
Example
The sirocco made the city unbearably hot and dusty.
B1 noun /ˈpæsɪŋ/

passing

Meaning
the act of moving past something or the end of someone's life
Example
The passing of the leader was a great loss for the nation.
C2 adjective /kwɪkˈsɑː.t̬ɪk/

quixotic

Meaning
Extremely idealistic, unrealistic, and impractical.
Example
His quixotic dreams often led to disappointment.
C1 adjective /ˈluːdɪkrəs/

ludicrous

Meaning
so foolish, unreasonable, or out of place as to be amusing
Example
It is ludicrous to think the Earth is flat.
C1 verb /ˈklæmbər/

clamber

Meaning
to climb with effort or difficulty, often using both hands and feet
Example
The children clambered over the rocks to reach the cave.
C2 adjective /bɪˈnaɪtɪd/

benighted

Meaning
In a state of intellectual or moral ignorance; overtaken by darkness.
Example
The explorers were lost in the benighted forest without any guide.
C2 noun /ˌniːoʊˈpeɪɡənɪzəm/

neopaganism

Meaning
Modern religious movements influenced by or claiming to be derived from the various historical pagan beliefs of pre-modern Europe.
Example
Neopaganism has gained popularity as people seek spiritual alternatives to mainstream religions.
B2 adjective /ˈtɒlərənt/

tolerant

Meaning
Showing willingness to allow the existence of opinions or behaviors that one dislikes or disagrees with.
Example
He is very tolerant of other people's beliefs.
A2 noun /ˈʌndərwɛr/

Under wear

Meaning
clothing worn under other clothes, next to the skin
Example
She bought new underwear from the department store.
C2 noun /ˈzɛfər/

zephyr

Meaning
A soft gentle breeze.
Example
A warm zephyr blew through the valley.
B1 noun /ˈkætəɡɔːri/

category

Meaning
a class or division of things regarded as having particular shared characteristics
Example
Books are arranged by category in the library.
C1 verb /praɪ/

pry

Meaning
to look closely into something; to try to find out private information
Example
She tried to pry into her neighbor’s private life.
C2 verb /bɪˈlaɪ/

belie

Meaning
To give a false impression of something; to contradict.
Example
His calm face belied his inner anxiety.
A1 noun /wel/

Well

Meaning
a deep hole in the ground from which water is obtained
Example
The villagers get water from the old well in the center of town.
C2 adjective /ɪnˈeɪliənəbl/

inalienable

Meaning
Unable to be taken away or transferred; absolute and permanent.
Example
Freedom of speech is an inalienable right.