arduous
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C1 adjective ˈɑː.dʒu.əs

arduous

Meaning
Involving or requiring strenuous effort; difficult and tiring.
Example
The trek through the mountains was an arduous journey.
C1 noun /ˈmjuːtɪni/

mutiny

Meaning
an open rebellion against authority, especially by soldiers or sailors
Example
The sailors staged a mutiny against their captain.
C2 noun /ˌrɛtəˈrɪʃən/

rhetorician

Meaning
A person who is skilled in the art of rhetoric or persuasive speaking/writing.
Example
The rhetorician captivated the audience with his eloquence.
B2 adjective /ʌn.rɪˈleɪ.tɪd/

Unrelated

Meaning
having no connection or relationship; not connected by family ties
Example
The two incidents were completely unrelated to each other.
C1 adjective /ˌɪnkənˈsiːvəbl̩/

inconceivable

Meaning
Impossible to imagine or believe; beyond comprehension.
Example
It seemed inconceivable that she could finish the marathon after such little training.
B2 noun /ˈdreɪ.nɪdʒ/

drainage

Meaning
the system or process by which water or other liquids are drained away
Example
Poor drainage caused flooding in the neighborhood.
C1 noun /ˈflæn.əl/

Flannel

Meaning
a soft woven fabric, typically made of wool or cotton and slightly milled and raised
Example
He wore a warm flannel shirt in winter.
B2 noun /fliːt/

fleet

Meaning
a group of ships, vehicles, or aircraft operating together under one command
Example
The navy deployed its entire fleet for the exercise.
B1 noun /treɪd/

trade

Meaning
The action of buying and selling goods and services.
Example
Trade agreements foster economic development.
B1 noun ˈtʊə.nə.mənt

tournament

Meaning
A series of contests between a number of competitors, competing for an overall prize.
Example
The tournament showcased exceptional talent.
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.
C2 adjective /ˈproʊtiən/

protean

Meaning
tending or able to change frequently or easily; versatile
Example
She is a protean artist who experiments with many styles.
B2 noun /ˈsikwəl/

Sequel

Meaning
a published, broadcast, or recorded work that continues the story or develops the theme of an earlier one; something that takes place after or as a result of an earlier event
Example
The movie sequel was even more successful than the original.
B2 noun ɡrɪd

grid

Meaning
A network of interconnected lines or a system for distributing electricity over a wide area.
Example
The national power grid must be upgraded.
C1 adjective /ɑːrˈkeɪn/

arcane

Meaning
understood by few; mysterious or secret
Example
The professor’s lecture was full of arcane details that only specialists could follow.
A2 adverb /ˈrɛə(r)li/

rarely

Meaning
not often, infrequently
Example
She rarely eats sweets because of her diet.
A2 noun /ˈdaɪnɪŋ/

dining

Meaning
the act of eating a meal, especially in a formal setting
Example
We enjoyed fine dining at the new restaurant.
C2 adjective /əˈkɪliən/

achillean

Meaning
like or characteristic of Achilles; strong but vulnerable
Example
His achillean pride made him blind to danger.
C2 adjective /ˌstaʊtˈhɑːrtɪd/

stouthearted

Meaning
Brave, determined, and courageous
Example
The stouthearted soldier never gave up.
C1 adjective /ˈhɑːrdi/

hardy

Meaning
Strong, robust, and capable of enduring difficult conditions.
Example
Hardy plants can survive the harsh winter.
B2 adjective /dɪˈvɔːrst/

divorced

Meaning
No longer married because the marriage has been legally dissolved.
Example
She has been divorced for five years.
A2 noun /ˈsɪŋ.ər/

Singer

Meaning
a person who sings, especially as a job or profession
Example
The singer performed beautifully at the concert last night.
B2 verb /əˈlɛdʒ/

allege

Meaning
to claim or assert something, typically without proof
Example
The witness alleged that the man was at the crime scene.
B1 adjective /ˈwel.θi/

Wealthy

Meaning
having a great deal of money; rich; prosperous
Example
The wealthy businessman donated millions to charity.
A2 noun /ˈmoʊtər/

motor

Meaning
a machine that produces motion or power to make something work
Example
The car’s motor stopped suddenly.
B2 noun /ˈθæŋksˌɡɪvɪŋ/

thanksgiving

Meaning
an annual holiday in the US for giving thanks, celebrated with a meal
Example
We spent Thanksgiving dinner with our family.
C2 noun /ˈkɪŋɡlɪŋ/

kingling

Meaning
A minor or petty king; a ruler of small importance.
Example
The kingling demanded respect from his people despite his small realm.
B2 noun /kənˌfɪɡəˈreɪʃən/

configuration

Meaning
an arrangement of parts or elements in a particular form or structure
Example
The configuration of the system needs to be adjusted for better performance.
A2 noun /ˈmoʊ.mənt/

Moment

Meaning
a very brief period of time; an exact point in time
Example
Please wait a moment while I check your order.
C1 noun /ˌtɛrəˈdæktɪl/

pterodactyl

Meaning
An extinct flying reptile of the Jurassic period, with a long slender head and wings formed by a membrane stretching along the body.
Example
The museum displayed a fossil of a giant pterodactyl.
C1 noun /rɪft/

rift

Meaning
a serious break in a relationship; a split or crack
Example
A rift developed between the two friends after the argument.
C2 noun /draɪd roʊz ˈpɛtəlz/

Dried Rose Petals

Meaning
dehydrated petals from roses used for culinary and aromatic purposes
Example
The dessert was garnished with dried rose petals.
B2 adjective /ˈtrʌst.fəl/

Trustful

Meaning
having or showing trust in someone or something; trusting
Example
She was too trustful and believed everything he said.
A2 adjective /sər'praɪz.ɪŋ/

Surprising

Meaning
causing surprise; unexpected; remarkable
Example
It's surprising how quickly children learn new languages.
C1 noun /ˈkɑːmənˌwɛlθ/

commonwealth

Meaning
an independent community or state, especially one founded for the common good; also an association of nations
Example
Australia is a member of the Commonwealth of Nations.
C1 noun /ˈtɒr.ənt/

Torrent

Meaning
a strong and fast-moving stream of water or other liquid; a sudden, violent, and copious outpouring
Example
The heavy rain created a torrent of water rushing down the mountain.
C1 verb /ˈkrɒs.briːd/

crossbreed

Meaning
to produce an animal or plant by mating two different breeds, varieties, or species
Example
Farmers crossbreed cows to improve milk production.
B2 noun ˈθrɛʃhəʊld

threshold

Meaning
A point of entry or beginning; the magnitude or intensity that must be exceeded for a certain reaction to occur.
Example
Once the threshold for pest population is reached, measures must be taken.
B2 adjective /ˈmɪθɪkəl/

Mythical

Meaning
existing only in myths or legends; imaginary or fictitious
Example
Dragons are mythical creatures that appear in many cultures.
A2 noun /ˈplen.ti/

Plenty

Meaning
a large or sufficient amount; abundance
Example
There is plenty of food for everyone at the party.
B2 verb /prɪˈsiːdɪd/

preceded

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

instructional

Meaning
providing knowledge or information; intended to teach
Example
The website offers many instructional videos for beginners.
A1 verb /liːv/

leave

Meaning
to go away from; to depart or exit
Example
The train leaves at 6 PM.
C2 noun /eɪˈklɑː/

eclat

Meaning
Brilliant success, acclaim, or great public approval.
Example
The artist's debut performance was met with great éclat.
C2 noun /ˈiːsθiːt/ or /ˈɛsθiːt/

aesthete

Meaning
A person who has a special appreciation of art and beauty.
Example
The aesthete admired the subtle details of the painting.
C2 adjective /ˌhaɪpəˈdɜːrmɪk/

hypodermic

Meaning
relating to the region immediately beneath the skin; also refers to a type of needle or syringe used to inject drugs beneath the skin.
Example
The doctor used a hypodermic needle to administer the vaccine.
A2 noun /ˈfɪɡ.jər/

Figure

Meaning
a number, especially one which forms part of official statistics; the shape of a human body
Example
The sales figure for this quarter exceeded all expectations.
B2 adjective /ˈɛθnɪk/

ethnic

Meaning
relating to a population subgroup with a common national or cultural tradition
Example
The festival celebrated the city's diverse ethnic communities.
C1 noun dʒəˈnɛt.ɪk ˌmɒd.ɪ.fɪˈkeɪ.ʃən

genetic modification

Meaning
The process of altering the genetic code of plants or animals.
Example
Genetic modification enhances crop resistance to pests and diseases.
C1 noun /ˈfɔːrˌθɔːt/

forethought

Meaning
careful consideration of what will be necessary or may happen in the future
Example
With a little forethought, we could have avoided the problem.
C1 adjective /ˌoʊvərˈrɔt/

overwrought

Meaning
extremely agitated or nervous; excessively elaborate
Example
She was too overwrought to speak clearly after the accident.
C1 noun /ˈfɔːls.hʊd/

Falsehood

Meaning
the state of being untrue; a lie
Example
The politician was caught spreading falsehoods about his opponent.
C1 noun /kənˈtɪn.dʒən.si/

contingency

Meaning
A provision for an unforeseen event or circumstance, especially in financial planning.
Example
The company has a contingency plan for economic downturns.
B2 noun /ˌfer.ˈwel/

Farewell

Meaning
an act of parting or of marking someone's departure
Example
The company organized a farewell party for the retiring manager.
C1 noun /ˈɒn.slɔːt/

onslaught

Meaning
A fierce or destructive attack.
Example
The village faced an onslaught of enemy forces.
C1 adjective /ˈpleɪntɪv/

plaintive

Meaning
expressing sadness or sorrow
Example
He raised a plaintive cry for help.
B1 noun /ˈviːɪkəl/

Vehicle

Meaning
a thing used for transporting people or goods, especially on land; a means of expressing or displaying something
Example
The electric vehicle is becoming more popular these days.
C1 verb /ˈɛm.ə.neɪt/

emanate

Meaning
To come out or spread from a source.
Example
A sweet fragrance emanated from the garden.
B2 verb /dɪˈvoʊt/

devote

Meaning
to give time, effort, or resources to something
Example
She devotes much of her time to helping the poor.
C1 noun ˌmɛməraɪˈzeɪʃən

memorization

Meaning
The process of learning or committing something to memory
Example
Memorization of important information is crucial for exams.
B2 verb /ɪmˈpoʊz/

impose

Meaning
to force someone to accept something; to establish or apply by authority
Example
The government imposed new taxes on luxury goods.
B2 noun /ˈkɒŋɡrɛs/

congress

Meaning
a formal meeting or assembly, especially of representatives for discussion
Example
The international congress on climate change will be held next year.
C1 noun /ɪmˈbɛzlmənt/

embezzlement

Meaning
The act of dishonestly taking money or property entrusted to one's care.
Example
The accountant was arrested for embezzlement of company funds.
A2 noun /jɑːrd/

Yard

Meaning
a unit of linear measure equal to 3 feet; an area of land immediately adjacent to a building
Example
The children played in the back yard.
C1 adjective /ɪnˈdʌktɪv/

inductive

Meaning
characterized by the inference of general laws from particular instances; reasoning from specific cases to general principles
Example
The scientist used inductive reasoning to form a hypothesis.
B2 noun prɪˈsɪʒ.ən

precision

Meaning
The quality of being exact and accurate.
Example
High precision instruments are used in surgery.
C1 noun /bɪz/

Biz

Meaning
business (informal); commercial enterprise or activity
Example
He's been in the restaurant biz for twenty years.
C1 noun /ˌnoʊtəˈraɪəti/

notoriety

Meaning
The state of being famous or well-known for something bad.
Example
The criminal gained notoriety for his daring escapes.
A2 adjective /ˈkreɪzi/

Crazy

Meaning
mentally ill; extremely foolish; wildly enthusiastic about something
Example
That's a crazy idea, but it might just work.
C1 adjective /ˈnɔːrmətɪv/

normative

Meaning
relating to rules, standards, or norms that govern behavior or beliefs
Example
The study focused on the normative aspects of cultural behavior.
C1 adjective /æmˈbɪvələnt/

ambivalent

Meaning
Having mixed or contradictory feelings about something or someone.
Example
She was ambivalent about accepting the new job offer.
B2 noun /ˈmɑːrkər/

marker

Meaning
an object used to indicate a position, place, or boundary; a pen with a thick tip used for writing or drawing
Example
He used a red marker to underline the important points.
B2 adverb /ˈʌltəmətli/

ultimately

Meaning
in the end, after everything else
Example
Ultimately, we decided to go ahead with the project.
B1 noun /tæŋk/

Tank

Meaning
a heavily armored fighting vehicle moving on a continuous track
Example
The tank rolled through the battlefield with powerful armor.
B2 noun /hɪp/

hip

Meaning
The part of the body on either side of the pelvis, or informal: trendy and fashionable.
Example
She put her hands on her hips.
B1 noun, verb /strɪŋ/

string

Meaning
a thin piece of cord or thread; to tie or fasten with a string
Example
She tied the package with a string.
C1 adjective /ˈnæs.ənt/

nascent

Meaning
Emerging, developing, or in the early stages of formation
Example
The nascent technology is revolutionizing industries.
C2 noun /ˈdʒaɪrəˌskoʊp/

gyroscope

Meaning
A device consisting of a wheel or disk mounted so it can spin rapidly and maintain orientation, used for navigation and balance.
Example
The airplane's navigation system relies on a gyroscope for stability.
B2 adjective /ˈspɛʃəˌlaɪzd/

specialized

Meaning
designed or developed for a particular purpose or function
Example
He has a specialized knowledge of ancient civilizations.
B2 noun ˈæk.tɪv rɪˈkɔːl

Active recall

Meaning
A learning technique that involves actively trying to retrieve information from memory rather than passively reviewing material.
Example
Active recall improves long-term memory and retention.
B2 adjective kənˈven.ʃən.əl

conventional

Meaning
Based on or in accordance with what is generally done or believed; traditional, standard, customary.
Example
Many farmers still use conventional farming methods.
C2 noun ˌhiː.məˈfɪl.i.ə

hemophilia

Meaning
A medical condition in which the ability of the blood to clot is severely reduced, causing the sufferer to bleed severely from even a slight injury.
Example
Hemophilia treatment benefits from genetic editing.
C2 noun /ˈɑːm.lət/

Armlet

Meaning
a band worn around the upper arm as an ornament
Example
The traditional dancer wore golden armlets that gleamed in the spotlight.
A1 noun /ˈkwes.tʃən/

Question

Meaning
a sentence asking for information or a response; an interrogative expression
Example
The teacher asked a difficult question during the exam.
B2 noun /bɪzˈnɛs sʌˈsɛs/

business success

Meaning
The achievement of desired outcomes in business operations, typically measured by profitability, growth, and sustainability.
Example
Innovation drives business success.
B2 noun /rek/

Wreck

Meaning
the destruction or disabling of a ship or vehicle; something that has been badly damaged or destroyed
Example
The car wreck blocked the highway for hours.
C1 verb /kraʊtʃ/

crouch

Meaning
to bend your knees and lower your body close to the ground
Example
The cat crouched before leaping at its prey.
B2 noun /ˈzɪɡzæɡ/

Zigzag

Meaning
a line or course having abrupt alternate right and left turns; a pattern of sharp turns
Example
The road follows a zigzag pattern up the mountain.
C1 adjective /ˈspaɪn.ləs/

Spineless

Meaning
lacking courage or determination; weak-willed
Example
He was too spineless to stand up for his beliefs.
C2 noun /ˈpɪnjən/

pinion

Meaning
a small gear or the outer part of a bird's wing; to restrain or immobilize
Example
The bird's pinion was injured, preventing it from flying.
C2 verb /ɪˈfɛktʃueɪt/

effectuate

Meaning
to put into force or cause to happen; to bring about
Example
The manager effectuated the changes to improve efficiency.
C1 adjective /ˈmɔːtəl/

Mortal

Meaning
subject to death; having a limited lifespan; human
Example
All human beings are mortal and will eventually die.
B2 noun /ˈaɪ.bɔːl/

Eyeball

Meaning
the round part of the eye within the eyelids and socket
Example
The doctor examined his eyeball carefully.
B2 noun /ˈfɪŋ.ɡər.prɪnt/

Fingerprint

Meaning
an impression or mark made on a surface by a person's fingertip; unique identification pattern
Example
The police found his fingerprints on the door handle at the crime scene.
C1 verb /wɪðˈhoʊld/

withhold

Meaning
to refuse to give or keep back something
Example
The company decided to withhold his bonus.
A2 adjective /ˈsʌðərn/

southern

Meaning
located in or facing the south; southern regions
Example
She moved to a southern city for work.
C1 adjective /prəˈlɪf.ɪk/

prolific

Meaning
Present in large numbers or quantities; plentiful; producing many works, results, or offspring.
Example
The author is prolific, having written over 30 books.
B1 noun /ˈpælɪs/

palace

Meaning
a large and impressive building that is the official home of a king, queen, or other ruler
Example
The royal family lives in a magnificent palace.
C1 adjective /ɪmˈpɜːmiəbl/

impermeable

Meaning
Not allowing fluid or gas to pass through.
Example
The container is made of impermeable plastic.
C2 noun /ˈveɪɡəri/

vagary

Meaning
An unexpected and inexplicable change in a situation or someone's behavior.
Example
The vagaries of the weather made planning difficult.
B1 noun /ˈlɪk.wɪd/

Liquid

Meaning
a substance that flows freely but is of constant volume, having a consistency like that of water or oil
Example
Water is a liquid at room temperature.
B1 verb /rɪˈliːs/

release

Meaning
to set free; to allow something to escape or go away
Example
The prisoner was released after ten years.
C2 noun /ɪˈlɪksər/

elixir

Meaning
A magical or medicinal potion believed to cure illnesses or grant immortality.
Example
The old legend spoke of an elixir that could grant eternal youth.
C2 noun /ˌdʒiːniˈælədʒɪst/

genealogist

Meaning
A person who studies or traces the history of families and their lineages.
Example
The genealogist uncovered records dating back to the 18th century.
C1 adjective /ˈlaʊzi/

lousy

Meaning
of very poor quality; bad or unpleasant
Example
He felt lousy after catching the flu.
C1 adverb /ɔːˈtɒnəməsli/

autonomously

Meaning
In an independent or self-governing manner.
Example
The robot can operate autonomously without human intervention.
A2 noun pəˈzɪʃ.ən

position

Meaning
A particular way in which someone or something is placed or arranged.
Example
The team's position reflects consistent performance.
B1 noun trend

trend

Meaning
A general direction in which something is developing or changing; a pattern or tendency.
Example
The current trend of deforestation is alarming.
B2 noun /ˈkʌm.pəs/

Compass

Meaning
an instrument for finding direction with a magnetic needle pointing to magnetic north
Example
The hiker used a compass to find the right direction.
C1 noun /ˈmʌltɪplaɪər/

multiplier

Meaning
a number or factor by which another number is multiplied; something that increases the effect or value of something else
Example
In economics, government spending can act as a multiplier for economic growth.
C1 noun /rəˈpɪdəti/

rapidity

Meaning
The quality of moving or happening quickly; swiftness or speed.
Example
The rapidity of technological change is astonishing.
C2 noun /pɛlf/

pelf

Meaning
Money, especially when gained dishonorably.
Example
The corrupt official was motivated only by pelf.
A1 pronoun /ˈɛvribɒdi/

everybody

Meaning
all people; everyone
Example
Everybody enjoyed the party.
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.
C1 verb /ˈflɪk.ər/

flicker

Meaning
to shine unsteadily or waver between light and dark
Example
The candle flickered in the wind.
C1 adjective /prɪˈpɒstərəs/

preposterous

Meaning
completely ridiculous or absurd; contrary to reason or common sense
Example
The idea that pigs could fly is preposterous.
C2 noun /ˌdɪʃəˈbiːl/

dishabille

Meaning
The state of being only partly or loosely dressed; casual or careless attire.
Example
She answered the door in a state of dishabille, wearing just a robe.
A1 adjective /ˈɔːr.ɪndʒ/

Orange

Meaning
having a color between red and yellow like that of a ripe orange fruit
Example
The orange sunset painted the sky magnificently.
C1 noun /ˈspɛktər/

specter

Meaning
A ghost or spirit; something that causes fear or dread.
Example
The specter of war still haunts the region.
C1 noun /ˈraɪtʃəsnəs/

righteousness

Meaning
the quality of being morally right or justifiable
Example
His life was dedicated to righteousness and truth.
B1 verb /ɪnˈvɑːlv/

involve

Meaning
to include as a necessary part, or to engage someone in an activity
Example
The project will involve several departments working together.