sinus
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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.
C1 noun /ˈpɜːrdʒəri/

perjury

Meaning
The offense of willfully telling an untruth in a court after taking an oath.
Example
She was convicted of perjury after giving false evidence.
C1 adjective /kənˈspɪkjuəs/

conspicuous

Meaning
Easily noticeable; attracting attention due to being unusual or prominent.
Example
Her red dress made her conspicuous at the party.
C1 adjective /əbˈtjuːs/

Obtuse

Meaning
annoyingly insensitive or slow to understand; lacking in intelligence or perception
Example
He was being deliberately obtuse about the instructions.
C1 verb /ˈsnɪkər/

snicker

Meaning
to laugh quietly in a disrespectful or mocking way
Example
The students snickered when the teacher made a mistake.
C1 adjective /ˈstætʃətɔːri/

statutory

Meaning
Required, permitted, or enacted by law.
Example
The company must comply with all statutory regulations.
C1 verb ˈɛk.spɪ.daɪt

expedite

Meaning
Make an action or process happen sooner or be accomplished more quickly.
Example
The government took steps to expedite the approval process.
C1 adjective əˈblɪv.i.əs

oblivious

Meaning
Being completely unaware of surrounding events.
Example
He was oblivious to the noise around him while reading.
C1 adjective /ˈbrɪslɪŋ/

bristling

Meaning
full of energy, anger, or excitement; showing bristles standing up
Example
He entered the room bristling with confidence.
C1 noun /ˈɡlædiˌeɪtər/

gladiator

Meaning
A man trained to fight in public contests in ancient Rome.
Example
The gladiator fought bravely in the arena.
C1 verb ɪɡˈzɛm.plɪ.faɪ

exemplify

Meaning
To be a typical example of or to illustrate something clearly, to show as an example or demonstrate.
Example
His dedication exemplifies true leadership.
C1 noun /ˌprəʊ.baɪˈɒt.ɪks/

probiotics

Meaning
Live microorganisms that, when administered in adequate amounts, confer health benefits to the host, especially for digestive health.
Example
Probiotics improve digestion and enhance gut health.
C1 adjective /rɪˈper.ə.bəl/

Repairable

Meaning
able to be fixed or mended; capable of being repaired
Example
The broken phone is repairable with the right parts.
C1 noun /sərˈveɪər/

surveyor

Meaning
A person who measures and maps land, buildings, or other features.
Example
The surveyor measured the land for construction.
C1 verb /dɪˈmiːn/

demean

Meaning
to cause someone to lose dignity or respect
Example
The manager demeaned his employees with rude remarks.
C1 adjective, noun, verb /ˈtrɛbəl/

treble

Meaning
triple; consisting of three parts; high-pitched sound in music
Example
The company's profits trebled in just two years.
C1 noun /tʃæmp/

champ

Meaning
an informal word for champion or winner.
Example
He is the new champ of the boxing tournament.
C1 noun esˈθet.ɪks

aesthetics

Meaning
A set of principles concerned with the nature and appreciation of beauty, especially in art and design.
Example
Interior design focuses on aesthetics and functionality.
C1 noun /ɪmˈbæl.əns/

Imbalance

Meaning
lack of proportion or relation between corresponding things; unequal distribution
Example
The doctor said the patient's dizziness was caused by an inner ear imbalance.
C1 noun /ˈrez.ɪ.dənt ˈkəʊ.ɔː.dɪ.neɪ.tər/

resident coordinator

Meaning
A local administrator or official who coordinates activities in a specific region.
Example
The resident coordinator welcomed all representatives.
C1 verb /əˈdʒuːdɪˌkeɪt/

adjudicate

Meaning
to make a formal judgment or decision about a problem or dispute
Example
The committee was formed to adjudicate disputes between the parties.
C1 noun /ˈprɛsɪdəns/ or /prɪˈsiːdəns/

precedence

Meaning
the condition of being considered more important than someone or something else; priority
Example
Safety takes precedence over speed in this factory.
C1 noun/verb /ˈtæm.pər.ɪŋ/

tampering

Meaning
The action of interfering with something in order to cause damage or make unauthorized alterations.
Example
Tampering with evidence is a criminal offense.
C1 noun /ˈwɛlˌduːər/

well-doer

Meaning
A person who does good deeds; a benefactor.
Example
The community praised the well-doer for his charity.
C1 adjective /ɪnˈdɪɡnənt/

indignant

Meaning
Feeling or showing anger at something considered unfair or unjust.
Example
She was indignant when accused of cheating.
C1 noun /əˈkɔːrdiən/

accordion

Meaning
a musical instrument played by squeezing and expanding with keys and buttons
Example
The musician played a cheerful tune on the accordion.
C1 noun /ˌlɪbəˈreɪʃən wɔːr/

liberation war

Meaning
a war fought to gain freedom from foreign rule, occupation, or oppression; an armed struggle for national independence
Example
The liberation war reshaped the nation’s history and identity.
C1 adjective /ˈpɛnɪtənt/

penitent

Meaning
Feeling or showing sorrow and regret for having done wrong.
Example
She was penitent after shouting at her friend.
C1 noun /rɪt/

writ

Meaning
A formal written order issued by a court.
Example
The judge issued a writ of habeas corpus.
C1 noun, adverb /ˈeɪliəs/

alias

Meaning
A false or assumed identity; also used to mean 'otherwise called'.
Example
The criminal was known by the alias 'Shadow'.
C1 noun ˌfɔːtɪfɪˈkeɪʃn

fortification

Meaning
A defensive wall or other reinforcement built to strengthen a place against attack.
Example
The fortifications protected the city.
C1 noun /ˌrætɪfɪˈkeɪʃən/

Ratification

Meaning
the action of signing or giving formal consent to a treaty, contract, or agreement
Example
The treaty required ratification by both countries' parliaments.
C1 adjective, verb /sɪˈdeɪt/

sedate

Meaning
calm, quiet, and composed; or to administer a drug to make someone calm or sleep
Example
The nurse sedated the patient before the operation.
C1 noun/verb /pɔːr/

pore

Meaning
As a noun: a tiny opening in the skin or surface. As a verb: to study something carefully.
Example
She pored over the documents for hours before making a decision.
C1 adjective /ˈdwɪndlɪŋ/

dwindling

Meaning
Gradually reducing in number, size, or strength.
Example
The villagers relied on dwindling water supplies.
C1 verb /əˈliː.vi.eɪt/

alleviate

Meaning
To make suffering, deficiency, or a problem less severe; to relieve or ease.
Example
Meditation can alleviate stress and improve focus.
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.
C1 adjective /ˌiːvænˈdʒɛlɪkəl/

evangelical

Meaning
Relating to the Christian gospel, especially the teachings that emphasize personal faith and the authority of the Bible.
Example
She grew up in an evangelical church community.
C1 noun /dɪˈskrep.ən.si/

discrepancy

Meaning
A lack of compatibility or similarity between two or more facts.
Example
The audit revealed a discrepancy between the reported earnings and actual income.
C1 adjective /ɪnˈæk.tɪv/

Inactive

Meaning
not active; not working; dormant; idle
Example
The volcano has been inactive for over a century.
C1 adjective /ˈʃɪvəlrəs/

chivalrous

Meaning
Behaving in a courteous, gallant, and honorable way, especially toward women.
Example
He was chivalrous, always opening doors for others.
C1 verb /fɔːrˈtɛl/

foretell

Meaning
to predict or announce something before it happens
Example
The old man claimed he could foretell the future.
C1 noun ˈpɜː.mə.kʌl.tʃər

permaculture

Meaning
The development of agricultural ecosystems intended to be sustainable and self-sufficient.
Example
Permaculture promotes self-sufficient farming systems.
C1 noun /ˈdʒɑːr.ɡən/

jargon

Meaning
Specialized or technical language used by a particular group or profession.
Example
The lawyer’s explanation was full of legal jargon.
C1 verb /səbˈstænʃieɪt/

substantiate

Meaning
To provide evidence to support or prove the truth of something.
Example
The lawyer worked to substantiate the claims with solid evidence.
C1 noun /ˌɛtɪˈmɒlədʒi/

etymology

Meaning
The study of the origin of words and how their meanings and forms have evolved.
Example
The etymology of the word 'salary' comes from the Latin word for salt.
C1 adjective /ˈskwiːmɪʃ/

squeamish

Meaning
easily made to feel sick, faint, or disgusted
Example
She felt squeamish at the sight of blood.
C1 noun /ˈfɔː.nə/

fauna

Meaning
The animal life of a particular region, habitat, or geological period.
Example
The fauna of the African savannah includes lions and elephants.
C1 verb /per/

pare

Meaning
to cut away the outer covering or reduce something gradually
Example
She pared the apple before eating it.
C1 verb pleɪɡd

plagued

Meaning
Troubled or afflicted persistently by problems or difficulties.
Example
People are plagued by anxiety and depression.
C1 noun/verb /rɪˈpoʊz/

repose

Meaning
a state of rest, sleep, or tranquility; to rest or lie in a peaceful position
Example
After the long journey, she sought repose in the quiet garden.
C1 verb /trænˈzækt/

transact

Meaning
to conduct or carry out business, a deal, or activity
Example
Customers can transact their banking online.
C1 adjective /ˈrɛtɪsənt/

reticent

Meaning
not revealing one's thoughts or feelings readily; reserved
Example
She was reticent about her personal life.
C1 noun /ˈskeɪ.biːz/

Scabies

Meaning
a contagious skin disease caused by mites that causes intense itching
Example
The doctor diagnosed him with scabies after examining the rash.
C1 noun ˈnɛktər

Nectar

Meaning
A sweet liquid produced by flowers that serves as food for butterflies.
Example
Butterflies drink nectar from flowers.
C1 verb əˈblɪt.ə.reɪt

obliterate

Meaning
To destroy utterly; wipe out completely, to erase or remove something completely.
Example
The storm obliterated entire villages.
C1 verb /ˈkʌvət/

covet

Meaning
to desire something belonging to someone else
Example
He coveted his neighbor's new car.
C1 adjective /pəˈrɛniəl/

perennial

Meaning
lasting or existing for a long time, or recurring continually
Example
Climate change is a perennial concern for scientists.
C1 verb /ˈnjuːtrəlaɪz/

neutralize

Meaning
to make something ineffective or harmless
Example
The medicine helped neutralize the poison in his system.
C1 noun /rɪˈtrækʃən/

retraction

Meaning
the act of taking back a statement, promise, or belief
Example
The newspaper issued a retraction of the false report.
C1 verb /rɪˈvoʊk/

revoke

Meaning
To officially cancel or withdraw a decision, privilege, or right.
Example
The government decided to revoke his passport.
C1 noun /ɪmˈpjʊərəti/

impurity

Meaning
the state of being unclean or contaminated; a substance that makes something impure
Example
The scientist removed every impurity from the water sample.
C1 adjective /riˈæk.tɪv/

Reactive

Meaning
responding to situations rather than initiating them; chemically active
Example
The company took a reactive approach to customer complaints.
C1 noun /ræˈpɔːr/

rapport

Meaning
A close and harmonious relationship in which the people or groups concerned understand each other's feelings or ideas.
Example
The teacher built a strong rapport with her students.
C1 noun ˈæ.sɛt ˌæl.əˈkeɪ.ʃən

asset allocation

Meaning
An investment strategy that aims to balance risk and reward by apportioning a portfolio's assets according to an individual's goals, risk tolerance, and investment horizon.
Example
Proper asset allocation is key to financial growth.
C1 adjective /ˈfruː.ɡəl/

Frugal

Meaning
economical; thrifty;
Example
She is very frugal and saves money by buying only necessary items.
C1 noun ˈstræt.ə.sfɪər

stratosphere

Meaning
The layer of the earth's atmosphere above the troposphere, extending to about 50 km above the earth's surface.
Example
The stratosphere provides a unique environment.
C1 adjective ˈkɒn.və.luː.tɪd

convoluted

Meaning
Extremely complex and difficult to follow; twisted or intricate.
Example
His argument was so convoluted that no one understood it.
C1 verb /ɪˈluːmɪneɪt/

illuminate

Meaning
To light up or make something clearer.
Example
Streetlights illuminate the road at night.
C1 adjective /ˌwɛlˈbrɛd/

well-bred

Meaning
Having or showing good manners; properly raised.
Example
She is a well-bred young lady with excellent manners.
C1 noun /ˈsmætərɪŋ/

smattering

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

abate

Meaning
to become less intense or widespread
Example
The storm began to abate after midnight.
C1 adjective /ˌfɑːrˈfetʃt/

farfetched

Meaning
unlikely to happen or be true; improbable
Example
His explanation for being late sounded farfetched.
C1 verb /rɪˈdrɛs/

redress

Meaning
to set right, remedy, or compensate for a wrong or grievance
Example
The company promised to redress the complaints of its customers.
C1 noun /ɡəˈrɪlə/

guerrilla

Meaning
a member of a small independent group taking part in irregular fighting, typically against larger forces
Example
The guerrilla fighters used ambushes to attack enemy positions.
C1 verb /strʌt/

strut

Meaning
to walk with a stiff, proud, and confident gait, often to show off
Example
He strutted across the stage after winning the award.
C1 adverb /ˈvaɪtəli/

vitally

Meaning
in an extremely important or essential way; in a manner relating to life or vitality
Example
Access to clean water is vitally important for public health.
C1 adjective /ˌɪnədˈvaɪzəbl/

inadvisable

Meaning
Not recommended; likely to have undesirable consequences.
Example
It is inadvisable to drive in such heavy rain.
C1 adjective /səbˈvɜːrsɪv/

subversive

Meaning
seeking or intended to undermine or overthrow an established system or authority
Example
The group was banned for its subversive activities.
C1 noun /ˌræm.ɪ.fɪˈkeɪ.ʃən/

ramification

Meaning
a consequence of an action or event, often complex or unwelcome.
Example
The new law has serious social ramifications.
C1 noun /peɪˈiː/

payee

Meaning
A person to whom money is paid or is to be paid.
Example
The payee must sign the check before cashing it.
C1 verb /ˈɛkˌsaɪz/

excise

Meaning
to cut out or remove completely, often by surgery
Example
The surgeon excised the tumor successfully.
C1 verb /ˈtɒpl/

topple

Meaning
to fall or cause to fall over; to overthrow
Example
The earthquake caused the old building to topple.
C1 adjective /ˈædʒɪteɪtɪd/

Agitated

Meaning
disturbed; anxious; restless; excited in a negative way
Example
He became agitated when he heard the bad news.
C1 noun /prəˈpɛlər/

propeller

Meaning
A mechanical device with blades that rotates to drive a ship, aircraft, or other vehicle forward.
Example
The airplane’s propeller cut through the air with great speed.
C1 verb /ˌoʊvərˈʃædoʊ/

overshadow

Meaning
to appear more important or significant than something else, reducing its impact
Example
The scandal overshadowed his achievements.
C1 noun /ˈθɪk.ɪt/

Thicket

Meaning
a dense group of bushes or trees; a thick growth of shrubs
Example
The rabbit disappeared into the thicket.
C1 adjective /frɔːt/

fraught

Meaning
Filled with or likely to result in something undesirable.
Example
The negotiations were fraught with tension and uncertainty.
C1 adjective /ʌnˈmaɪndfəl/

Unmindful

Meaning
not paying attention; careless; heedless
Example
She was unmindful of the danger around her.
C1 verb /ɡrʌnt/

grunt

Meaning
to make a low, rough sound, often when exerting effort or expressing annoyance
Example
He grunted as he lifted the heavy box.
C1 noun /brɪm/

Brim

Meaning
the projecting edge of a hat; the edge or lip of something
Example
The wide brim of his hat protected him from the scorching sun.
C1 noun /ˌɪnsɪɡˈnɪfɪkəns/

insignificance

Meaning
The quality of being unimportant or trivial.
Example
He felt a sense of insignificance in the vast universe.
C1 verb /ˈpeɪtrənaɪz/

patronize

Meaning
to treat someone in a condescending way; to be a regular customer of a business
Example
Don't patronize me with your fake sympathy.
C1 noun ˌræʃ.ən.əl.ɪˈzeɪ.ʃən

rationalization

Meaning
The practice of finding reasons for behavior or actions that are not the real reasons.
Example
His rationalization of the mistake was not convincing.
C1 adjective /ˈkrɪm.zən/

Crimson

Meaning
a deep purplish-red color
Example
The crimson sunset painted the sky with beautiful shades.
C1 noun /ˈbæs.ti.ən/

bastion

Meaning
a stronghold or fortification; a place or institution strongly defending particular principles
Example
The castle stood as a bastion against enemy attacks.
C1 adjective /suːˈpɜːrlətɪv/

superlative

Meaning
Of the highest quality or degree; expressing the extreme form of an adjective or adverb.
Example
Her performance was superlative, earning her a standing ovation.
C1 noun /ˈɛər.luːm/

heirloom

Meaning
a valuable object that has belonged to a family for several generations
Example
The ring is a family heirloom passed down from her grandmother.
C1 verb /spɜːr/

spur

Meaning
To encourage or motivate someone to take action.
Example
The teacher's praise spurred him to study harder.
C1 noun /wedʒ/

Wedge

Meaning
a triangular piece of wood or metal used for splitting or securing; a piece of cheese or cake
Example
He used a wooden wedge to split the log into smaller pieces.
C1 adjective /ʌnˈɜːrθli/

unearthly

Meaning
Strange or unnatural in a way that seems not of this world
Example
The forest was filled with an unearthly glow.
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.
C1 noun /ˈfæm.ɪn/

Famine

Meaning
extreme scarcity of food; a period when food is extremely scarce
Example
The severe drought led to widespread famine in the region.
C1 noun /ˈpɜːrpɪtreɪtər/

perpetrator

Meaning
a person who commits a harmful, illegal, or immoral act
Example
The police arrested the perpetrator of the crime.
C1 adjective /ɪɡˈzɪləreɪtɪd/

exhilarated

Meaning
feeling very happy, animated, or elated
Example
She felt exhilarated after finishing the marathon.
C1 noun /ˈjeloʊ oʊliˈændər/

Yellow oleander

Meaning
a tropical flowering shrub with bright yellow flowers; also known as lucky nut
Example
The yellow oleander blooms throughout the year in warm climates.
C1 noun /ˈmiːknəs/

Meekness

Meaning
The quality of being quiet, gentle, and submissive
Example
His meekness was often mistaken for weakness by his colleagues.
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.
C1 noun /frɪndʒ/

fringe

Meaning
A decorative border of threads; the outer edge or margin of something.
Example
The festival had a fringe of small independent performances.
C1 noun /ˌæmplɪfɪˈkeɪʃən/

amplification

Meaning
the act or process of making something stronger, louder, or more intense; an expansion or elaboration of details
Example
The microphone provides amplification of the speaker’s voice.
C1 noun /ˈpɒlɪɡlɒt/

polyglot

Meaning
a person who knows and can use several languages
Example
She is a polyglot, fluent in English, Spanish, and Bengali.
C1 noun /truːp/

troupe

Meaning
A group of dancers, actors, or performers who work together.
Example
The theater troupe performed brilliantly on stage.
C1 noun /ˈdiːvə/

diva

Meaning
a famous female singer; a woman who is admired or behaves like a star
Example
The pop diva performed her latest hit to a cheering crowd.
C1 adjective /ˈrɛtroʊˌɡreɪd/

retrograde

Meaning
moving backward or returning to a worse condition
Example
The policy was seen as a retrograde step for human rights.
C1 noun /slæɡ/

slag

Meaning
Stony waste matter separated from metals during the smelting process.
Example
The factory dumped the slag near the river.
C1 noun /ˈmelənkəli/

Melancholy

Meaning
A feeling of pensive sadness; thoughtful or gentle sadness
Example
A deep melancholy settled over him after reading the old letters.
C1 verb /dɪˈflɛkt/

deflect

Meaning
to cause something to change direction; to avoid answering directly
Example
The shield deflected the incoming arrow.
C1 adjective /dɪsˈdʒɔɪntɪd/

disjointed

Meaning
Lacking order, coherence, or connection; disconnected.
Example
The movie felt disjointed and hard to follow.
C1 noun /rɪˈkɒnɪsəns/

reconnaissance

Meaning
A survey or exploration, especially for military or strategic purposes.
Example
The soldiers conducted a reconnaissance of the enemy camp.
C1 noun /læps/

Lapse

Meaning
a temporary failure of concentration, memory, or judgment; the termination of a right or privilege
Example
There was a brief lapse in security that allowed the intruder to enter the building.
C1 noun /ˈnʌr.ɪʃ.mənt/

nourishment

Meaning
Food and nutrients necessary for the body's growth and development.
Example
Proper nourishment is essential for child development.