arbiter
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C2 noun /ˈɑːrbɪtər/

arbiter

Meaning
a person who has the authority to settle a dispute or decide an issue
Example
The principal acted as the arbiter in the conflict between the students.
C2 verb /ˌdɪsəˈbjuːz/

disabuse

Meaning
To free someone from a false belief or misconception.
Example
The teacher tried to disabuse the students of their misunderstanding.
C2 adjective /dɪˈklæməˌtɔri/

declamatory

Meaning
speaking in a loud, rhetorical, or dramatic way
Example
The politician’s declamatory style impressed some but irritated others.
C2 noun /ˈɒlɪv bɑːb/

Olive barb

Meaning
A small freshwater fish with olive-colored body and barbels
Example
The olive barb is commonly found in South Asian rivers.
C2 adjective /ˌɪnˌɑːpərˈtuːn/

inopportune

Meaning
Happening at a bad or inconvenient time.
Example
His call came at the most inopportune moment.
C2 noun /ˈpɜr.kwɪ.zɪt/

Perquisite

Meaning
an additional benefit or privilege given to an employee beyond their regular salary; a special right or advantage
Example
Company car was one of the perquisites of his executive position.
C2 noun /ˈsælvoʊ/

salvo

Meaning
A simultaneous discharge of guns or release of bombs; a sudden outburst of cheers or applause.
Example
The soldiers fired a salvo to honor the fallen general.
C2 noun /ˌjuːnɪˈtɛəriən/

unitarian

Meaning
A person who believes that God exists as one entity rather than as a Trinity; a member of a religious denomination that emphasizes individual freedom of belief.
Example
The Unitarian church is known for its inclusive and open-minded approach.
C2 noun /ˈəʊpəs/

opus

Meaning
A creative work, especially a large and important piece of music or art.
Example
The composer considered the symphony his greatest opus.
C2 noun /dreɪk/

Drake

Meaning
a male duck; a type of waterfowl
Example
The drake led his family of ducks across the pond.
C2 noun /ˈɒfərtɔːri/

offertory

Meaning
The part of a religious service when offerings are collected; the offering itself.
Example
The offertory was taken during the Sunday service.
C2 noun /ˈæmjʊlət/

Amulet

Meaning
an ornament or small piece of jewelry thought to give protection against evil, danger, or disease
Example
She wore a silver amulet around her neck for good luck.
C2 noun /ˈbriːtʃɪz/

Breeckes

Meaning
knee-length trousers; short pants
Example
He wore riding breeches for the equestrian event.
C2 adjective /ˌɪndɪˈsɒljʊbl/

indissoluble

Meaning
Unable to be destroyed, broken, or dissolved.
Example
Marriage was once considered an indissoluble bond.
C2 verb /haɪˈpɒθɪkeɪt/

hypothecate

Meaning
to pledge something, such as property, as security for a debt without giving up possession of it.
Example
The company hypothecated its assets to secure the loan.
C2 noun /ˈɛəri/

aerie

Meaning
A large nest of a bird of prey, especially an eagle, typically built high in a tree or on a cliff.
Example
The eagle built its aerie on the high cliff.
C2 verb /əbˈvɜːrt/

obvert

Meaning
To turn something so as to face in a different direction; in logic, to convert a proposition by negating both subject and predicate.
Example
The teacher asked the students to obvert the statement for practice.
C2 adjective /ˈtrʌk.jʊ.lənt/

truculent

Meaning
Eager or quick to argue, fight, or show aggression.
Example
She became truculent when her ideas were challenged.
C2 verb /rɛtʃ/

retch

Meaning
to make the sound and movement of vomiting without bringing anything up
Example
The smell of spoiled food made him retch violently.
C2 noun /ˈpjuː.pɪ.lɪdʒ/

pupilage

Meaning
The state of being a pupil or under instruction.
Example
During his pupilage, he studied law under a senior barrister.
C2 noun /ˌtɜːsənˈtɛnəri/

tercentenary

Meaning
The 300th anniversary of an event.
Example
The city celebrated its tercentenary with a grand festival.
C2 verb /ˈlaɪ.ə.naɪz/

lionize

Meaning
to treat someone as a celebrity or give a lot of public attention
Example
The press began to lionize the young scientist after his discovery.
C2 noun /pʌɡˈnæsɪti/

pugnacity

Meaning
A natural disposition to be combative or aggressive.
Example
The coach admired the player's pugnacity on the field.
C2 noun /ˈdʒɛntaɪl/

gentile

Meaning
A person who is not Jewish
Example
The synagogue welcomed both Jews and Gentiles.
C2 noun /ˌfɑːsfəˈrɛsəns/

phosphorescence

Meaning
the property of emitting light without noticeable heat
Example
The deep-sea creatures displayed a beautiful phosphorescence.
C2 noun /ˈɛksɪdʒənsi/

exigency

Meaning
an urgent need or demand requiring immediate attention
Example
In times of war, the exigency of the situation requires quick decisions.
C2 adverb /ˈprɒksɪmətli/

proximately

Meaning
In a near or close manner; nearly.
Example
The village lies proximately to the river.
C2 adjective /ˈæsənənt/

assonant

Meaning
Having or characterized by assonance; repeating similar vowel sounds.
Example
The poem is filled with assonant words that create a musical rhythm.
C2 noun /liːdʒ/

liege

Meaning
A feudal lord entitled to allegiance and service; a loyal subject.
Example
The knight pledged loyalty to his liege.
C2 verb /ˈkælsɪfaɪ/

calcify

Meaning
To harden by deposition of calcium salts; to become rigid or inflexible.
Example
Over time, the tissue began to calcify and lose flexibility.
C2 adjective ˌɪm.pəˈtɜː.bə.bəl

imperturbable

Meaning
Unable to be upset or excited; not easily disturbed.
Example
His imperturbable nature made him a great leader.
C2 adjective /ˌɪnfəˈlɪsɪtəs/

infelicitous

Meaning
not suitable or well chosen; awkward or unfortunate
Example
His infelicitous remark ruined the atmosphere of the meeting.
C2 adjective /ˌsuːpərˈnuːmərɛri/

supernumerary

Meaning
Exceeding the usual number; extra or unnecessary.
Example
The play included several supernumerary actors to fill the background scenes.
C2 noun /ˈɒbsɪkwi/

obsequy

Meaning
A funeral rite, usually used in plural form obsequies.
Example
The village gathered for the obsequy of their beloved teacher.
C2 noun /ˌdeɪnuːˈmɒ̃/

denouement

Meaning
The final resolution or conclusion of a story, drama, or complicated situation.
Example
The novel's denouement was both surprising and satisfying.
C2 noun /ˌhaɪdroʊdaɪˈnæmɪks/

hydrodynamics

Meaning
The branch of science concerned with the motion of fluids, especially liquids, and the forces acting on solid bodies immersed in fluids.
Example
Hydrodynamics is essential in designing efficient ship hulls.
C2 adjective /səˈræfɪk/

seraphic

Meaning
Of or like a seraph; angelic, pure, and blissful.
Example
She gave him a seraphic smile that calmed his fears.
C2 noun /ˈseɪ.ɡoʊ/

Sago

Meaning
starchy foodstuff obtained from the pith of various tropical palm stems
Example
She prepared sago pudding for dessert.
C2 noun /ˈpoʊ.ɪˌtæs.tər/

poetaster

Meaning
an inferior or trivial poet
Example
He was mocked as a poetaster by the literary critics.
C2 noun /ˌædʒʊˈreɪʃən/

adjuration

Meaning
a solemn urging or appeal
Example
The priest made an adjuration for peace and unity.
C2 adjective /ˈsɪmiən/

simian

Meaning
Relating to, resembling, or affecting apes or monkeys.
Example
The scientist studied the simian behavior of the chimpanzees.
C2 adjective /dʒərˈmeɪn/

germane

Meaning
Relevant and appropriate to the subject being considered.
Example
Her comments were not germane to the discussion.
C2 adjective /ʌnˈtiːtʃəbəl/

unteachable

Meaning
not able or willing to learn; resistant to instruction or guidance
Example
He was so stubborn that he became almost unteachable.
C2 noun /ˈspæŋɡəl/

spangle

Meaning
A small shiny piece of metal or plastic used for decoration on clothes.
Example
Her dress was covered with silver spangles that glittered in the light.
C2 adjective /pɪˈdʒɒrətɪv/

pejorative

Meaning
Expressing contempt or disapproval.
Example
He used pejorative terms to insult his opponents.
C2 noun /ɪˈfʌldʒəns/

effulgence

Meaning
Brilliant radiance or shining brightness.
Example
The effulgence of the sunrise lit up the entire valley.
C2 noun /ˌɪlɪbəˈræləti/

illiberality

Meaning
The quality of being illiberal; lack of tolerance or generosity.
Example
The illiberality of the new laws alarmed the citizens.
C2 adjective /ˌæd.vɛnˈtɪʃ.əs/

adventitious

Meaning
Happening by chance or accident, not planned.
Example
His success was partly due to adventitious circumstances.
C2 noun /ˈpæk.ɪ.dɜːrm/

pachyderm

Meaning
a large mammal with thick skin, such as an elephant, rhinoceros, or hippopotamus
Example
The zoo had several pachyderms, including elephants and rhinos.
C2 noun /ˈslæt.ən/

slattern

Meaning
a woman who is untidy or slovenly in appearance or habits
Example
The house looked as if a slattern lived there.
C2 noun /ˈlæsɪtjuːd/

lassitude

Meaning
a state of physical or mental weariness; lack of energy
Example
After the long hike, a feeling of lassitude swept over the group.
C2 noun /kænˈtoʊnmənt/

Cantonment

Meaning
a military base or permanent military station
Example
The soldiers lived in the cantonment outside the city.
C2 noun /ˈbɛlˌwɛðər/

bellwether

Meaning
A person or thing that leads or indicates a trend.
Example
The company is seen as a bellwether of the technology industry.
C2 verb /ˈvaʊtʃ.seɪf/

vouchsafe

Meaning
to grant or give something in a gracious or condescending manner
Example
He vouchsafed them a rare smile.
C2 noun /ˈmækɪntɒʃ/

mackintosh

Meaning
a waterproof raincoat, originally made from rubberized fabric
Example
He wore a mackintosh to stay dry in the rain.
C2 noun /ˈlɪnəmənt/

liniment

Meaning
A liquid or lotion applied to the skin to relieve pain or stiffness.
Example
He rubbed liniment on his sore muscles after the workout.
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.
C2 adjective /ˈlæm.ən.tə.bəl/

lamentable

Meaning
deserving to be criticized or regretted; unfortunate
Example
The team’s lamentable performance disappointed their fans.
C2 noun kənˌsep.tʃu.ə.laɪˈzeɪ.ʃən

conceptualization

Meaning
The process of forming a concept or idea; the process of developing something in the mind.
Example
The conceptualization of renewable cities is groundbreaking.
C2 noun /ˈsɪnəd/

synod

Meaning
An assembly of the clergy in a Christian church convened to decide on issues of doctrine or administration.
Example
The synod gathered to discuss reforms in the church.
C2 noun /ˈklæŋər/

clangor

Meaning
A loud, resonant, and continuous noise, often metallic.
Example
The clangor of the church bells filled the town square.
C2 noun /ˈæstər/

Aster

Meaning
a flowering plant with daisy-like flowers that typically bloom in fall
Example
The purple asters bloomed beautifully in the autumn garden.
C2 noun /bʊr/

Boor

Meaning
a rough and bad-mannered person; someone who lacks refinement or culture
Example
The wealthy businessman was actually a boor who showed no respect for others.
C2 noun /dɪˈpləʊmətɪst/

diplomatist

Meaning
A person skilled in diplomacy; another word for diplomat.
Example
The diplomatist handled the negotiations with great tact.
C2 adjective /ˌprɛsɪˈdɛnʃəl/

precedential

Meaning
Relating to, or serving as, a precedent; having authority as an example.
Example
The court’s decision has precedential value.
C2 verb /diːˈmæɡnɪtaɪz/

demagnetize

Meaning
To remove or reduce the magnetic properties of something.
Example
The technician demagnetized the old cassette tape.
C2 noun /ˈɡæd.flaɪ/

gadfly

Meaning
A person who annoys or criticizes others to stimulate change or provoke action.
Example
The journalist was a gadfly, constantly questioning the government's policies.
C2 noun /kəmˈpleɪsəns/

complacence

Meaning
a feeling of quiet pleasure or self-satisfaction, often without awareness of potential danger
Example
His complacence prevented him from noticing the risks.
C2 adjective /ˌpɛrənˈθɛtɪkəl/

parenthetical

Meaning
Relating to or expressed in parentheses; a side remark or digression.
Example
He added a parenthetical comment during the lecture.
C2 noun /ˈskʌl.i.ən/

scullion

Meaning
a servant assigned the most menial kitchen tasks
Example
In medieval times, a scullion was responsible for cleaning pots and pans.
C2 noun /ˈskæb.ərd/

scabbard

Meaning
A sheath for the blade of a sword or dagger, typically made of leather or metal.
Example
The knight drew his sword from the scabbard.
C2 noun /ˈbʊljən/

bullion

Meaning
Gold or silver in bulk before being coined or made into jewelry.
Example
The bank stores gold bullion in its vaults.
C2 verb /bɪˈstraɪd/

bestride

Meaning
To sit or stand astride something; to dominate over.
Example
The statue bestrides the city square.
C2 verb /ˈdɛsɪkeɪt/

desiccate

Meaning
to dry up completely or remove the moisture from something
Example
The hot sun can quickly desiccate plants in the desert.
C2 verb /pərˈtɪkjələrˌaɪz/

particularize

Meaning
to mention or describe something in detail
Example
The witness was asked to particularize the events of that night.
C2 verb /dɪsˈɡɔːrdʒ/

disgorge

Meaning
to discharge or pour out; to vomit; to give up reluctantly
Example
The broken pipe disgorged water all over the floor.
C2 noun /ˌpɜː.spɪˈkæs.ɪ.ti/

perspicacity

Meaning
Sharp insight, keen understanding and discernment.
Example
Her perspicacity in business decisions led to success.
C2 adjective /ˈæb.ə.rənt/

aberrant

Meaning
deviating from what is normal or expected; abnormal
Example
His aberrant behavior shocked everyone at the meeting.
C2 adjective /rɪˈprɛsəbl̩/

repressible

Meaning
Capable of being restrained or suppressed.
Example
The movement proved to be hardly repressible.
C2 noun /foʊ ˈpɑː/

faux pas

Meaning
a social blunder or mistake in etiquette
Example
He committed a major faux pas by forgetting her birthday.
C2 verb /ɪˈdjuːs/

educe

Meaning
To draw out or bring forth something latent or hidden.
Example
The teacher tried to educe a response from the shy student.
C2 adverb /ˌsʌb ˈroʊzə/

sub rosa

Meaning
secretly, in confidence, or in private
Example
The deal was made sub rosa to avoid public scrutiny.
C2 noun /mjuːˈnɪfəsəns/

munificence

Meaning
great generosity or lavish giving
Example
The hospital was built thanks to the munificence of a wealthy donor.
C2 verb /dɪsˈkaʊntənəns/

discountenance

Meaning
To disapprove of or discourage something.
Example
The teacher strongly discountenanced cheating in exams.
C2 verb /dɪˈpreɪv/

deprave

Meaning
to corrupt morally; to make someone immoral or wicked
Example
The novel was criticized for attempting to deprave the minds of young readers.
C2 adjective /əˈfɪʃəs/

officious

Meaning
Excessively eager to offer unwanted help or advice; meddlesome.
Example
The officious guard kept interrupting the visitors with unnecessary instructions.
C2 noun /oʊd/

ode

Meaning
a lyrical poem, often expressing praise or strong emotions
Example
The poet wrote an ode to the beauty of nature.
C2 adjective /ˈseɪpiənt/

sapient

Meaning
Wise, or appearing to be wise.
Example
The professor gave a sapient response to the complex question.
C2 noun /proʊˈbɑːsɪs/

proboscis

Meaning
The long, flexible nose of some animals, especially an elephant, or a tubular feeding and sucking organ in insects.
Example
The elephant used its proboscis to grab food.
C2 noun /ˌɛntəˈmɒlədʒi/

entomology

Meaning
The scientific study of insects.
Example
She studied entomology to understand the behavior of bees.
C2 noun /hæɡ/

Hag

Meaning
an ugly old woman, especially a vicious or malicious one; a witch
Example
In the fairy tale, the wicked hag lived alone in a cottage deep in the forest.
C2 noun /ˌluː.mɪˈnɛs.əns/

luminescence

Meaning
The emission of light by a substance not resulting from heat; a type of cold light.
Example
The luminescence of the fireflies lit up the forest.
C2 adverb, noun /ˈwɛə.wɪð/

wherewith

Meaning
With which; the means or resources needed for something.
Example
He lacked the money wherewith to buy a new house.
C2 adjective /ˌɪndaɪˈdʒestəbəl/

Indigestible

Meaning
difficult or impossible to digest; hard to process in the stomach
Example
The old bread became hard and indigestible.
C2 adverb /hərˈmɛtɪkli/

hermetically

Meaning
In a way that is completely airtight or sealed off.
Example
The jars were hermetically sealed to preserve freshness.
C2 adjective /sɛnˈtrɪfjʊɡəl/

centrifugal

Meaning
Moving or tending to move away from a center.
Example
The centrifugal force pushes the clothes to the sides of the washing machine.
C2 adjective fəˈleɪ.ʃəs

fallacious

Meaning
Based on false reasoning or misleading arguments.
Example
His argument was based on fallacious reasoning.
C2 adverb /ˌfɔːrθˈwɪθ/

Forthwith

Meaning
immediately; without delay; at once
Example
The manager ordered the employee to stop the unsafe practice forthwith.
C2 adjective /ˌɪrɪˈfrændʒɪbəl/

irrefrangible

Meaning
Not to be broken, violated, or infringed
Example
The constitution guarantees certain irrefrangible rights to every citizen.
C2 noun /ˌpɛntəˈhiːdrən/

pentahedron

Meaning
A solid geometric figure with five faces.
Example
In geometry class, the teacher explained the structure of a pentahedron.
C2 adjective /ˌhæfˈbeɪkt/

half-baked

Meaning
poorly thought out or badly planned
Example
The manager quickly rejected his half-baked proposal.
C2 adverb /ˈdɑːrklɪŋ/

darkling

Meaning
In the dark or growing dark; dimly.
Example
The forest creatures moved darkling through the night.
C2 adjective /ˌmæl.əˈfɪʃ.ənt/

maleficient

Meaning
Doing harm or evil; having a harmful effect.
Example
The maleficient acts of the tyrant ruined the kingdom.
C2 noun, verb /ˈbɛvəl/

bevel

Meaning
A sloping edge or surface; to cut or shape an edge at an angle.
Example
The carpenter beveled the edges of the table.
C2 verb /ɛmˈbleɪzən/

emblazon

Meaning
To decorate or display something in a noticeable or impressive way.
Example
The team's logo was emblazoned on their uniforms.
C2 adjective /ɪmˈpræktɪkəbl/

impracticable

Meaning
Not capable of being carried out or put into practice.
Example
The plan seemed impracticable due to limited resources.
C2 noun/adjective /ælˈbaɪ.noʊ/

albino

Meaning
A person, animal, or plant lacking normal pigmentation, resulting in pale skin, hair, and eyes.
Example
The albino rabbit had white fur and pink eyes.
C2 noun /bəˈkuːl/

Bakul

Meaning
a fragrant white flower native to South Asia, scientifically known as Mimusops elengi
Example
The sweet fragrance of bakul flowers filled the evening air in the village.
C2 verb /ɪnˈdʒɛst/

ingest

Meaning
To take food, drink, or another substance into the body, usually by swallowing.
Example
The patient must ingest the medicine with water.
C2 adjective /ˈlʌstrəs/

lustrous

Meaning
having a gentle sheen or soft glow
Example
Her hair looked smooth and lustrous.
C2 noun /ɪkˈspiːdiənsi/

expediency

Meaning
the quality of being convenient and practical despite possibly being improper or immoral
Example
He acted out of political expediency rather than principle.
C2 adjective /ˈrɛkənˌsaɪləbl̩/

reconcilable

Meaning
Capable of being resolved or made consistent.
Example
Their differences are reconcilable with honest communication.
C2 adjective /ˌlɛvəlˈhɛdɪd/

levelheaded

Meaning
calm and sensible; showing good judgment.
Example
She remained levelheaded during the crisis.
C2 verb /ˈdɪðər/

dither

Meaning
to be indecisive or unable to make a decision
Example
He dithered for hours before choosing a restaurant.
C2 noun /ˌbɪbliəʊˈmeɪniə/

bibliomania

Meaning
An extreme obsession with collecting or possessing books.
Example
His bibliomania led him to fill every room with books.
C2 adjective /həˈmɑː.lə.ɡəs/

homologous

Meaning
Having the same relation, relative position, or structure, especially due to evolutionary origin.
Example
The wings of bats and the arms of humans are homologous structures.
C2 adjective /ˈoʊdiəs/

odious

Meaning
extremely unpleasant or repulsive
Example
The dictator was remembered for his odious crimes.
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.
C2 verb /səˈfjuːz/

suffuse

Meaning
to gradually spread through or over something
Example
A warm glow suffused her face as she smiled.
C2 noun /pəˈnʌmbrə/

penumbra

Meaning
a partially shaded area around the shadow of an object, especially during an eclipse
Example
The moon’s penumbra created a dim shadow over the Earth.
C2 verb /ɪˈluːmɪn/

illumine

Meaning
to light up or make clear
Example
The rising sun illumined the mountain peaks.