reactant
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C1 noun /riˈæktənt/

reactant

Meaning
A substance that takes part in and undergoes change during a chemical reaction.
Example
Oxygen is a reactant in the process of combustion.
B2 verb /səˈsteɪn/

sustain

Meaning
To support, maintain, or keep something going over time.
Example
The team worked hard to sustain their success.
C2 noun /ˈpɛtrəˌɡræf/

petrograph

Meaning
a description or representation of rocks, especially in detailed scientific writing
Example
The scientist studied the petrograph to understand the rock composition.
C2 adjective /ˈlæmbənt/

lambent

Meaning
glowing or flickering softly; having a gentle radiance
Example
The lambent light of the candle filled the room with warmth.
C1 adjective /ˈdɪn.dʒi/

Dingy

Meaning
dark and dirty; gloomy; dull in color
Example
The old building had dingy walls that needed painting.
A1 noun /ˈɡrændˌfɑːðər/

grandfather

Meaning
the father of one's father or mother
Example
My grandfather tells us stories every evening.
C2 verb /ˌdɪsəˈvaʊ/

disavow

Meaning
to deny responsibility for or connection with something
Example
He disavowed any involvement in the scandal.
C1 adjective /ˌdɪsɪnˈdʒɛnjʊəs/

disingenuous

Meaning
not candid or sincere; giving a false appearance of honesty or openness
Example
She gave a disingenuous excuse for missing the meeting.
C1 noun /ˈpɒp.i siːdz/

Poppy Seeds

Meaning
tiny round seeds from the poppy plant used as a spice or garnish in cooking
Example
Poppy seeds are sprinkled on top of breads and used in Bengali curries.
C1 noun /ˈwɔː.tər ˌlɪl.i/

Water-lily

Meaning
a floating flower that grows on the surface of ponds and lakes
Example
The white water-lily floated gracefully on the pond.
C1 noun /ˌɪntərˈmɪʃən/

intermission

Meaning
A pause or break, especially during a performance or event.
Example
The play had a twenty-minute intermission.
C2 adjective /ˈtɔːdri/

tawdry

Meaning
cheap and showy but of poor quality
Example
She wore a tawdry necklace that broke easily.
A1 noun /striːt/

street

Meaning
a public road in a city or town, typically with buildings on one or both sides
Example
He walked down the street to the park.
C2 noun /ˈhɑːstəlri/

hostelry

Meaning
An inn or lodging place, especially one for travelers.
Example
They stayed at a small hostelry near the mountains.
C1 noun /ˈsmætərɪŋ/

smattering

Meaning
A small amount or superficial knowledge of something.
Example
He has a smattering of Spanish.
C1 adjective /ˌzɛnəˈfoʊbɪk/

xenophobic

Meaning
having or showing a dislike or fear of people from other countries
Example
The leader’s xenophobic comments sparked outrage across the country.
C2 adjective /ˈnɛtlˌsʌm/

nettlesome

Meaning
Causing irritation, annoyance, or difficulty.
Example
The nettlesome rules frustrated the workers.
C1 noun ˌɪnfɛsˈteɪʃən

infestation

Meaning
The presence of an unusually large number of insects or animals in a place, causing damage or disease.
Example
The infestation of ants in the kitchen led to immediate pest control measures.
C2 noun /ˈlæsi/

lassie

Meaning
a young girl (informal, mainly Scottish)
Example
The old man greeted the little lassie warmly.
C1 noun /ɪˈnɪɡ.mə/

enigma

Meaning
A person or thing that is mysterious, puzzling, or difficult to understand.
Example
Life remains an enigma to many.
B2 verb /kənˈsɒl.ɪ.deɪt/

consolidate

Meaning
To combine things in order to make them more effective or easier to handle.
Example
The company aims to consolidate its market position.
B1 adjective /ˈsoʊ kɔːld/

so-called

Meaning
referred to as or known by a particular name or title, often misleadingly
Example
The so-called expert couldn't answer the question.
C2 adjective /ˌʌltrəˈmɒnteɪn/

ultramontane

Meaning
beyond the mountains, especially referring to support for the Pope over local church authority
Example
The debate highlighted the ultramontane position in church politics.
C1 noun /ˈtʌrɪt/

turret

Meaning
A small tower on top of a larger tower or building, often used in castles or fortifications.
Example
The castle was guarded by soldiers stationed in the turret.
C2 noun /hʊˈzɑːr/

hussar

Meaning
a member of a light cavalry regiment in European armies, especially the Hungarian cavalry
Example
The hussar rode swiftly across the battlefield.
C1 noun /ˌriː.əˈdʒʌst.mənt/

readjustment

Meaning
The act of changing or correcting something again to make it suitable or balanced.
Example
After moving to a new city, he went through a period of readjustment.
C2 noun /ɡiː/

Ghee

Meaning
clarified butter used in South Asian cooking
Example
She used ghee instead of butter for cooking the rice.
C1 noun /skwɔːl/

squall

Meaning
a sudden violent gust of wind, often accompanied by rain, snow, or sleet
Example
A sudden squall caught the sailors off guard.
C1 noun /ˌpæl.pɪˈteɪ.ʃən/

Palpitation

Meaning
a noticeably rapid, strong, or irregular heartbeat due to agitation or medical condition
Example
She experienced palpitations before her job interview.
C1 noun /skraɪb/

scribe

Meaning
a person who writes documents, especially in ancient times; a professional copyist
Example
In ancient Egypt, scribes recorded important events.
C1 noun /nɪˈɡeɪʃən/

negation

Meaning
The act of denying something; the contradiction or absence of something.
Example
The theory is built on the negation of traditional beliefs.
B2 noun /əˈpoʊ.nənt/

Opponent

Meaning
a person who disagrees with or resists a proposal or practice; someone who competes against another
Example
The chess player defeated his strongest opponent.
B2 noun /ˌprɒsɪˈkjuːʃən/

prosecution

Meaning
The act of bringing a criminal charge against someone and pursuing legal action in court.
Example
The prosecution presented strong evidence against the defendant.
B2 verb /spɪl/

spill

Meaning
to cause liquid to flow or fall out of a container by accident
Example
Be careful not to spill your coffee.
C1 adjective /kənˈdʒenɪtl/

congenital

Meaning
existing from birth, usually describing a disease or condition
Example
The child was born with a congenital heart defect.
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.
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.
C2 noun /ˈbed.ləm/

Bedlam

Meaning
a scene of noisy confusion; chaos and disorder
Example
The classroom was complete bedlam after the fire alarm.
B2 noun /iˈkɒlədʒɪst/

ecologist

Meaning
A scientist who studies the relationships between living organisms and their environment.
Example
The ecologist studied the effects of pollution on the forest ecosystem.
C1 noun /ˈɪntərˌluːd/

interlude

Meaning
A short period of time that comes between two events; an interval.
Example
There was a brief musical interlude between the two acts of the play.
C2 noun /baɪˈmɛstər/

bimester

Meaning
A period of two months.
Example
The academic program is divided into six bimesters.
C1 adjective /seɪdʒ/

Sage

Meaning
wise; showing wisdom from experience; prudent; having good judgment
Example
The sage advice from the elder helped solve the problem.
B1 noun /ˈdʒuː.ni.ər/

Junior

Meaning
a person who is younger or lower in rank than someone else; relating to young people
Example
The junior employee was eager to learn from senior colleagues.
B2 noun /ˈɪdɪət/

idiot

Meaning
a person who acts in a way that is considered very stupid or foolish
Example
He acted like an idiot at the party last night.
C1 noun /ˌkɔr.diˈæl.ɪ.ti/

Cordiality

Meaning
sincere affection and kindness; warm and friendly behavior
Example
The host's cordiality made all the guests feel welcome and comfortable.
C1 noun /əˌlɪtəˈreɪʃən/

alliteration

Meaning
the occurrence of the same consonant sound at the beginning of words in close succession
Example
She used alliteration in her poem to add musicality.
B2 noun /ˈtrɔːmə/

trauma

Meaning
a deeply distressing or disturbing experience; physical injury or emotional shock
Example
The accident left her with lasting emotional trauma.
C1 adjective /əbˈsɛsɪv/

obsessive

Meaning
Relating to or characterized by an obsession; thinking about something too much.
Example
He has an obsessive interest in cleanliness.
C2 noun /ɪnˈdɛntʃər/

indenture

Meaning
A formal legal agreement, contract, or document, often relating to work or service.
Example
In the 18th century, many workers came under indenture to work overseas.
C2 noun /ˌpraɪmoʊˈdʒɛnɪtʃər/

primogeniture

Meaning
The right of the firstborn child to inherit the family estate or title.
Example
Under primogeniture, the eldest son inherited the entire estate.
B1 adjective /ˈiː.ɡər/

Eager

Meaning
showing keen interest; enthusiastic; having or showing desire and excitement
Example
She was eager to start her new job.
C1 adjective /ˈdesələt/

Desolate

Meaning
deserted; lonely; barren
Example
The abandoned village looked desolate and empty.
C1 noun speɪst ˌrep.ɪˈtɪʃ.ən

spaced repetition

Meaning
A learning technique that involves reviewing information at increasing intervals to improve long-term retention.
Example
Spaced repetition helps in long-term memory retention.
C1 noun /sɪˈtɑːr/

Sitar

Meaning
a traditional Indian stringed musical instrument with a long neck and resonating body
Example
The sitar creates beautiful ragas in Indian classical music.
B1 adjective /ˌʌnbɪˈliːvəbəl/

Unbelievable

Meaning
impossible to believe; extremely surprising or remarkable
Example
The magician's performance was absolutely unbelievable.
A1 noun /ˈfɑːðər/

father

Meaning
A male parent of a child.
Example
His father taught him how to ride a bicycle.
B1 verb /ˌɪntəˈrʌpt/

interrupt

Meaning
to stop someone from speaking or doing something by suddenly saying or doing something
Example
She tried not to interrupt while he was speaking.
C1 noun /ˌkɒmpɪˈleɪʃən/

compilation

Meaning
a collection of things, especially pieces of writing or music, gathered together
Example
The book is a compilation of his best essays.
C2 noun, verb /ˈtræməl/

trammel

Meaning
A restriction or impediment to freedom of action; to restrict.
Example
The strict rules trammel the creativity of the students.
B2 noun /ˈaʊtlet/

outlet

Meaning
a means by which something is released, expressed, or distributed
Example
Art is a great outlet for emotions.
A2 adjective /θɪn/

Thin

Meaning
having little thickness; not thick; slender
Example
She wore a thin jacket in the cold weather.
C2 noun /dɪˌlæpɪˈdeɪʃən/

dilapidation

Meaning
The state of disrepair or ruin as a result of neglect.
Example
The old temple was in a state of dilapidation.
B2 verb /dɪsˈkʌrɪdʒ/

discourage

Meaning
to make someone less confident or enthusiastic about doing something
Example
Failure should not discourage you from trying again.
A1 adjective /ɪmˈpɔː.tənt/

important

Meaning
Of great significance or value; likely to have a profound effect on success, survival, or well-being.
Example
Important steps must be taken to address pollution.
B1 noun ˈstæn.dədz

standards

Meaning
A level of quality or attainment; a required or agreed level of quality or attainment.
Example
High standards inspire competitors.
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.
C2 adverb /ˈvɛrɪli/

verily

Meaning
truly; certainly; without a doubt
Example
Verily, I say unto you, this is the truth.
C2 noun /ˈdʌlərd/

dullard

Meaning
a slow or stupid person
Example
He was considered a dullard by his classmates.
A2 noun /blʌd/

Blood

Meaning
the red liquid that circulates in the arteries and veins of humans and animals, carrying oxygen to and carbon dioxide from the tissues of the body
Example
The doctor took a blood sample for testing.
C1 noun /ˌmaʊntəˈnɪə/

mountaineer

Meaning
A person who climbs mountains as a sport or profession.
Example
The mountaineer reached the summit after a long climb.
C2 noun /vɜːrˈtuː/

virtu

Meaning
a love of or taste for fine art, antiques, or curiosities
Example
The collector’s house was filled with objects of virtu.
B1 noun /ˌdes.tɪˈneɪ.ʃən/

Destination

Meaning
the place to which someone or something is going; the ultimate purpose or end point
Example
Paris was their dream destination for their honeymoon trip.
B1 verb /hʊk/

hook

Meaning
to catch with a hook; to fasten
Example
He hooked the fish successfully.
C1 adjective /ˈdɔːr.mənt/

Dormant

Meaning
inactive; sleeping; temporarily suspended; not currently active
Example
The volcano has been dormant for over a century.
C1 noun /ˈtrɛʒərər/

treasurer

Meaning
a person responsible for managing the financial affairs of an organization
Example
The treasurer presented the annual financial report.
A2 noun /ɡɪˈtɑːr/

Guitar

Meaning
a stringed musical instrument played by strumming or plucking the strings with fingers or a pick
Example
She learned to play guitar when she was twelve years old.
C2 adjective /ˌmɒnəkrəˈmætɪk/

monochromatic

Meaning
Consisting of or displaying only one color.
Example
The artist created a striking monochromatic painting in shades of blue.
C1 noun /ˈkaʊn.tə.nəns/

countenance

Meaning
a person's face or expression; support or approval
Example
Her cheerful countenance brightened the room.
B2 noun /aɪˈdiː/

id

Meaning
identification; a document or number used to prove who someone is
Example
Please show your ID at the entrance.
B1 noun /ˈlaɪtnɪŋ/

lightning

Meaning
a flash of light in the sky caused by electricity during a storm
Example
The lightning struck a tree near our house.
B1 noun /ˈfes.tə.vəl/

Festival

Meaning
a day or period of celebration, typically for religious reasons; an organized series of concerts, films, etc.
Example
The music festival attracted thousands of visitors from around the world.
A2 adjective /maɪˈnuːt/

Minute

Meaning
extremely small; tiny; detailed; precise
Example
The scientist examined minute details under the microscope.
C1 noun /foʊ/

foe

Meaning
an enemy or opponent
Example
The knight fought bravely against his foe.
B2 noun /ˈmoʊ.tɪv/

Motive

Meaning
a reason for doing something; what drives someone to act
Example
The police are investigating the motive for the crime.
B2 adjective /ˈstɑːrtəld/

startled

Meaning
suddenly shocked or surprised by something unexpected
Example
She was startled by the loud noise outside.
B1 noun /broʊˈʃʊr/

brochure

Meaning
a small booklet or pamphlet containing information or advertising
Example
The travel agent gave us a brochure about the holiday package.
C1 noun /ˌbɪbliˈɒɡrəfi/

bibliography

Meaning
a list of books, articles, or other sources used or referred to in scholarly work
Example
The report includes a detailed bibliography at the end.
C2 noun /ˈɪəri/

eyry

Meaning
an alternative spelling of eyrie; a nest of a bird of prey
Example
The falcon guarded its eyry fiercely.
B1 adjective /ʌnˈfɔːr.tʃən.ət/

Unfortunate

Meaning
having bad luck; regrettable or unlucky
Example
It was unfortunate that the meeting was cancelled at the last minute.
C1 noun /ˈhɑː.mɪ.saɪd/

Homicide

Meaning
the deliberate and unlawful killing of one person by another; murder
Example
The detective was assigned to investigate the homicide that occurred downtown last night.
C2 noun /ˈɡæliən/

galleon

Meaning
A large sailing ship used mainly by Europeans from the 16th to 18th centuries.
Example
The Spanish galleon carried treasures across the Atlantic.
C1 adjective ɪnˈtrɪn.zɪk

intrinsic

Meaning
Belonging naturally; essential. Existing as a natural or basic part of something.
Example
Creativity is an intrinsic quality of a great artist.
C1 noun /ˈpoʊdiətrɪst/

podiatrist

Meaning
a doctor specializing in foot care
Example
I have an appointment with the podiatrist for my ankle pain.
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 noun /ˈmɪn.i.ən/

minion

Meaning
A follower or underling of a powerful person, especially a servile one.
Example
The dictator was surrounded by loyal minions who carried out his orders.
A1 adverb /tuː/

too

Meaning
to a higher degree than is desirable, permissible, or possible
Example
She is too tired to continue working.
C1 verb /sərˈmaʊnt/

surmount

Meaning
to overcome a difficulty or obstacle
Example
He surmounted all the challenges to achieve his dream.
C2 adverb /ˈaɪsɪli/

icily

Meaning
In a very cold, unfriendly, or hostile manner.
Example
She replied icily to his question.
B2 noun /ˈnɪk.neɪm/

Nickname

Meaning
a familiar or humorous name given to a person instead of their real name
Example
His nickname is 'Tiger' because he's so brave.
C1 noun ˈdaɪ.nə.sti

dynasty

Meaning
A line of hereditary rulers of a country; a succession of people from the same family who play a prominent role in business, politics, or another field.
Example
The Ming dynasty ruled China for centuries.
B2 verb /dɪˈstrækt/

distract

Meaning
to take someone's attention away from what they are doing or focusing on
Example
The loud noise distracted her during the exam.
B2 noun /kəmˈpliːʃən/

completion

Meaning
the action or process of finishing something
Example
The completion of the project will take another few weeks.
A2 adverb /ˈɛniweɪ/

anyway

Meaning
used to emphasize a statement or to return to a previous subject; regardless of what happened
Example
I was tired, but I went to the meeting anyway.
B2 noun ˈmʌltiˌtɑːskɪŋ

multitasking

Meaning
The performance of more than one task at the same time
Example
Multitasking reduces efficiency.
B2 noun /ɪnˈθuziæst/

enthusiast

Meaning
a person who is very interested in a particular activity or subject
Example
He is a football enthusiast and watches every match.
A2 preposition /pɜːr/

per

Meaning
for each, according to
Example
The tickets are priced at $20 per person.
C1 adjective /ˈɪɡ.ni.əs/

igneous

Meaning
Formed through the cooling and solidification of magma or lava.
Example
Granite is an igneous rock commonly used in construction.
C2 adjective /ˈhɔːri/

hoary

Meaning
gray or white with age; very old and respected
Example
The hoary oak tree stood as a witness to centuries of history.
C1 noun /æɡˈnɒs.tɪk/

agnostic

Meaning
a person who believes that nothing is known or can be known about the existence of God; uncertain in belief
Example
He described himself as an agnostic rather than an atheist.
B1 adjective /ˈtrʌbəld/

troubled

Meaning
experiencing or showing distress, anxiety, or worry
Example
He looked deeply troubled after hearing the bad news.
C2 noun /liːən/

lien

Meaning
A legal right to keep possession of property until a debt is paid.
Example
The bank placed a lien on the house until the mortgage was cleared.
C2 adjective /ˌmɪsənˈθrɑːpɪk/

misanthropic

Meaning
having or showing a dislike of humankind
Example
His misanthropic attitude made it difficult for him to make friends.
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.
A2 noun ˈɡeɪ.mɪŋ

gaming

Meaning
The practice of playing video games or competitive games.
Example
Gaming has evolved into a billion-dollar industry.
C1 adjective /ˌbaɪˈlæt.ər.əl/

bilateral

Meaning
An agreement or relationship between two parties that is mutual, two-sided, or reciprocal.
Example
The two countries signed a bilateral trade agreement.
B1 adjective /ˈæk.jə.rət/

Accurate

Meaning
correct, exact, and without any mistakes
Example
The weather forecast was completely accurate.
C2 adjective /ˌɪrɪˈfrændʒɪbəl/

irrefrangible

Meaning
Not to be broken, violated, or infringed
Example
The constitution guarantees certain irrefrangible rights to every citizen.
C1 noun /əˈpɒsəl/

apostle

Meaning
A vigorous and pioneering advocate or supporter of a particular cause, often used for the early Christian disciples.
Example
He became an apostle of environmental protection.
C2 noun /ˌɪnsjəˈlærəti/

insularity

Meaning
The state of being isolated or narrow-minded.
Example
The insularity of the group prevented them from accepting new ideas.
C1 verb /ɪˈvɪkt/

evict

Meaning
To expel someone from a property, usually by legal process.
Example
The landlord decided to evict the tenants for not paying rent.
C2 noun /ˌɪntərˈrɛɡnəm/

interregnum

Meaning
A period between rulers or governments when normal leadership is suspended.
Example
The country faced instability during the interregnum after the king’s death.