opalescent
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C2 adjective /ˌoʊpəˈlɛsənt/

opalescent

Meaning
showing or reflecting a milky, iridescent light like an opal
Example
The opalescent sky glowed with shades of pink and blue.
C2 verb ˈɑːb.fə.skeɪt

obfuscate

Meaning
Render obscure, unclear, or unintelligible.
Example
Politicians often obfuscate facts to mislead people.
C2 adjective /ˈsed.j ə.l ə s/

Sedulous

Meaning
showing dedication and diligence; persistent and careful in work
Example
She was sedulous in her research, spending hours in the library every day.
C2 verb /əˈpraɪz/

apprise

Meaning
to inform or notify someone
Example
The manager will apprise the staff of the new policies.
C2 noun /lɪnt/

lint

Meaning
small soft fibers that come off cloth, often found in dryers or on clothes
Example
There was lint all over his black shirt after the wash.
C2 adverb /əˈθwɔːrt/

athwart

Meaning
Across or in opposition to something.
Example
A fallen tree lay athwart the road, blocking traffic.
C2 noun /ˌlɛksɪˈkɒɡrəfər/

lexicographer

Meaning
A person who compiles, writes, or edits dictionaries.
Example
The lexicographer spent years compiling the dictionary.
C2 noun /kəˈlɒsəs/

colossus

Meaning
A person or thing of enormous size, importance, or ability.
Example
Einstein was a colossus in the world of science.
C2 verb əˈmiːljəreɪt

ameliorate

Meaning
To make better; improve or enhance something.
Example
The new policies are designed to ameliorate living conditions.
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 verb /rɛst/

wrest

Meaning
to forcibly pull something from a person's grasp; to seize with effort or struggle
Example
The police had to wrest the weapon from the suspect's hand.
C2 verb /ɪnˈdɒktrɪˌneɪt/

indoctrinate

Meaning
To teach someone to fully accept a set of beliefs or ideas without question.
Example
The regime tried to indoctrinate the youth with propaganda.
C2 noun /kænt/

cant

Meaning
Hypocritical and insincere talk, especially about moral or religious principles.
Example
The politician's speech was filled with cant about honesty and integrity.
C2 noun /ˈɛərəˌnɔːt/

aeronaut

Meaning
A person who travels in an airship, balloon, or other aircraft.
Example
The aeronaut skillfully guided the hot-air balloon across the valley.
C2 adjective /ˈoʊdiəs/

odious

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

dismember

Meaning
to cut or tear the limbs from a body; to divide into separate parts
Example
The king ordered his enemies to be dismembered.
C2 noun /ɪɡˈzɔːrbɪtəns/

exorbitance

Meaning
The quality of being excessive, unreasonable, or going beyond proper limits.
Example
The exorbitance of the hotel's prices shocked the tourists.
C2 verb /ˈstɪp.əl/

stipple

Meaning
to cover a surface with numerous small dots or specks, often in drawing or painting
Example
The artist stippled the canvas to create a textured effect.
C2 noun əˈdʒuː.dɪ.kə.tɪv ˈbɒd.i

adjudicative body

Meaning
An official organization that has the authority to judge disputes and make decisions.
Example
The adjudicative body deliberated on the case.
C2 adjective /ɪˈrɛzəluːt/

irresolute

Meaning
uncertain or indecisive; lacking determination
Example
He stood irresolute at the crossroads, unsure which path to take.
C2 adjective /ˌsuːdəˈrɪfɪk/

sudorific

Meaning
causing or increasing sweating
Example
The doctor prescribed a sudorific drug to help reduce the fever.
C2 noun /ˌsɪɡnɪfɪˈkeɪʃən/

signification

Meaning
the meaning or sense conveyed by a word, action, or symbol
Example
The signification of the gesture was misunderstood.
C2 noun /hɪˈdʒɛməni/ or /ˈhɛdʒəmoʊni/

hegemony

Meaning
leadership or dominance, especially by one state or group over others
Example
The empire maintained its hegemony over neighboring states.
C2 verb /əˈbɑː.mə.neɪt/

abominate

Meaning
to feel hatred or loathing for something
Example
She abominates cruelty to animals.
C2 verb /ˈeksɔːrsaɪz/

exorcise

Meaning
To drive out an evil spirit or bad influence through rituals or prayers.
Example
The priest was called to exorcise the spirit from the house.
C2 noun /ˌɪn.strəˈmɛn.təl.ɪst/

instrumentalist

Meaning
A person who plays a musical instrument.
Example
The instrumentalist played a beautiful solo on the violin.
C2 noun /dɛnˈdrɒlədʒi/

dendrology

Meaning
the scientific study of trees and woody plants
Example
He is studying dendrology at the university.
C2 verb /ˈdʒɛsteɪt/

gestate

Meaning
to carry and develop in the womb during pregnancy; to develop an idea over a period of time
Example
The mother whale gestates her calf for over a year.
C2 noun /ˈmʌskɪt/

musket

Meaning
a type of long gun used in the past, especially by infantry soldiers
Example
The soldiers carried muskets into the battlefield.
C2 adjective /ˌhɪstriˈɒnɪk/

histrionic

Meaning
Overly dramatic or theatrical in behavior or style.
Example
Her histrionic reaction to the small problem surprised everyone.
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 noun /ʌnˈkloʊðɪŋ/

unclothing

Meaning
the act or process of removing clothing
Example
The child quickly ran inside for unclothing after playing in the mud.
C2 noun /əˈsɛt.ɪˌsɪz.əm/

asceticism

Meaning
The practice of severe self-discipline and abstaining from indulgence, typically for religious or spiritual reasons.
Example
Asceticism has been a part of many religious traditions throughout history.
C2 verb /ˈæsəneɪt/

assonate

Meaning
To correspond or agree in sound, especially by vowel sounds; to rhyme approximately.
Example
The lines assonate beautifully, giving the song a unique flow.
C2 noun /ˌiː.kəʊ.tɒkˈsɪ.kə.lə.dʒi/

ecotoxicology

Meaning
The study of the effects of chemical pollution on the environment.
Example
Ecotoxicology studies the effects of pesticides on wildlife.
C2 noun /fɔːrˈbɛrəns/

forbearance

Meaning
Patient self-control; restraint and tolerance, especially in difficult situations.
Example
She showed remarkable forbearance during the heated argument.
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.
C2 noun /ˈæk.rɪ.moʊ.ni/

acrimony

Meaning
Bitterness and anger, especially in speech or behavior.
Example
The divorce was filled with acrimony and disputes.
C2 verb /ˈdʒaɪreɪt/

gyrate

Meaning
to move or spin quickly in circles
Example
The dancer gyrated wildly to the rhythm of the drums.
C2 noun /ˌræproʊʃˈmɑːn/

rapprochement

Meaning
The establishment or resumption of harmonious relations.
Example
The two countries signed an agreement that marked a new rapprochement.
C2 noun /ɛnˈsɪklɪkəl/

encyclical

Meaning
a formal letter sent by the Pope to Catholic churches, usually addressing important issues
Example
The Pope issued an encyclical on climate change and moral responsibility.
C2 noun /pəˈtiːnə/

patina

Meaning
a surface film or sheen on metal, stone, or wood due to age or use; also, a superficial appearance
Example
The bronze statue developed a green patina after years in the sea air.
C2 verb /ˈmʌfəl/

muffle

Meaning
to make a sound quieter or less distinct; to cover or wrap something to reduce noise or warmth
Example
She tried to muffle her laughter with a scarf.
C2 noun /spʌndʒ ɡɔːrd/

Sponse gourd

Meaning
a fibrous gourd that becomes sponge-like when dried, used for cleaning and in cooking when young
Example
The sponge gourd can be eaten when young or dried to make natural scrubbers.
C2 adjective /ˈmiːli ˌmaʊðd/

mealy-mouthed

Meaning
Unwilling to speak directly and honestly; insincere or evasive in speech.
Example
The manager gave a mealy-mouthed excuse instead of admitting the mistake.
C2 noun ˈtɪl.ɪdʒ

tillage

Meaning
The preparation of land for growing crops.
Example
Excessive tillage can lead to soil erosion.
C2 noun /maɪˈæzmə/

miasma

Meaning
An unpleasant or unhealthy smell or atmosphere.
Example
A miasma of decay hung over the abandoned house.
C2 verb /ˈnuːkliˌeɪt/

nucleate

Meaning
to form into a nucleus or bring together into a central part
Example
The droplets began to nucleate around tiny particles in the air.
C2 noun /ˈdɛvɪltrɪ/

deviltry

Meaning
Cruel or malicious behavior; mischief with an evil aspect.
Example
The villain’s deviltry terrified the townsfolk.
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 /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 /ruːθ/

ruth

Meaning
A feeling of pity, compassion, or sorrow.
Example
He felt no ruth for the people he had betrayed.
C2 adjective /ˈoʊ.vɔɪd/

ovoid

Meaning
egg-shaped; resembling an oval or ellipse
Example
The artist painted an ovoid shape in the center of the canvas.
C2 noun /ˈbæn.jən/

Banian

Meaning
a sleeveless undergarment worn next to the skin; vest
Example
He put on a cotton banian under his shirt.
C2 adjective /ˌɪnɪkˈstrɪkəbl/

inextricable

Meaning
Impossible to separate or escape from.
Example
The two friends shared an inextricable bond.
C2 noun /ˌhæŋ.ər ˈɒn/

hanger-on

Meaning
a person who spends time with a powerful or famous person to gain benefits.
Example
The celebrity was always surrounded by hangers-on.
C2 adjective /ˈklɔɪ.ɪŋ/

cloying

Meaning
too sweet, rich, or sentimental, making it unpleasant
Example
The dessert was so cloying that I couldn't finish it.
C2 noun /brəˈvjʊrə/

bravura

Meaning
a display of great skill and brilliance, especially in music or performance
Example
The pianist delivered a bravura performance that left the audience spellbound.
C2 verb /ˈɪmprɪkeɪt/

imprecate

Meaning
To utter a curse or invoke evil upon someone.
Example
The old woman imprecated her enemies with dark words.
C2 adjective /ˈtæsɪtɜrn/

taciturn

Meaning
reserved or uncommunicative in speech; saying little
Example
He was a taciturn man who rarely spoke in meetings.
C2 noun /loʊm/

loam

Meaning
Fertile soil mixture of sand, clay, and organic matter.
Example
Loam soil is ideal for agriculture due to its nutrient content.
C2 adjective /ˈbɪliəs/

bilious

Meaning
Relating to bile or an ill-tempered, irritable disposition.
Example
He became bilious after hearing the unfair criticism.
C2 adjective /ˌdaɪəˈtɒmɪk/

diatomic

Meaning
Consisting of two atoms.
Example
Oxygen is a diatomic molecule.
C2 adjective /dʒoʊˈkoʊs/

jocose

Meaning
playful or humorous in speech or behavior
Example
The professor’s jocose remarks kept the class entertained.
C2 adjective /ˈfʌndʒəbl/

fungible

Meaning
interchangeable; able to replace or be replaced by another identical item
Example
In finance, money is considered a fungible asset.
C2 verb, adjective /ˈstraɪeɪt/

striate

Meaning
to mark with stripes or grooves; striped or streaked in appearance
Example
The rock surface was striated by glacial movement.
C2 noun /ˈlæki/

lackey

Meaning
a person who is overly willing to serve or obey someone else
Example
He treated his assistant like a mere lackey.
C2 adjective /ˈmɒtld/

mottled

Meaning
Marked with spots, streaks, or blotches of different shades or colors.
Example
The snake's mottled skin helped it blend into the forest floor.
C2 noun /pəˈlæv.ər/

palaver

Meaning
prolonged and idle discussion; fuss or unnecessary talk
Example
After much palaver, they finally agreed on the plan.
C2 adjective, noun /səbˈmɜːrsəbl/

submersible

Meaning
capable of being submerged; a small underwater craft
Example
The scientists explored the deep ocean using a submersible.
C2 noun /kɒn.tɪˈɡjuː.ɪ.ti/

contiguity

Meaning
the state of being in direct contact or next to each other
Example
The contiguity of the two countries facilitates trade.
C2 noun /ˌɛfləˈrɛsəns/

efflorescence

Meaning
the process of flowering or reaching an optimal stage of development
Example
The garden was at the peak of its efflorescence in spring.
C2 noun /kænˈtɑː.tə/

cantata

Meaning
A vocal composition with instrumental accompaniment, typically in several movements, often involving a choir.
Example
The choir performed a beautiful cantata during the festival.
C2 noun /ˈbrɪmˌstoʊn/

brimstone

Meaning
Sulfur, especially when considered as fiery and associated with hell or divine punishment.
Example
The preacher spoke of fire and brimstone to warn the congregation.
C2 noun /ˈnjuː.trɪ.mənt/

nutriment

Meaning
Something that nourishes; sustenance or food.
Example
The soil provides nutriment to the plants.
C2 adjective /ˌɪnkəmˈbʌstəbl/

incombustible

Meaning
Not capable of catching fire or burning.
Example
This material is incombustible and safe for construction.
C2 noun /rɪˈvaɪ.zəl/

revisal

Meaning
The act of revising, reviewing, or making changes to something.
Example
The revisal of the contract took longer than expected.
C2 noun /ˈtʌmbrəl/

tumbrel

Meaning
A two-wheeled cart, especially one used during the French Revolution to carry prisoners to the guillotine.
Example
The prisoners were carried to the square in a wooden tumbrel.
C2 verb /ɪkˈspeɪʃiˌeɪt/

expatiate

Meaning
to speak or write at length or in detail
Example
The professor expatiated on the importance of critical thinking.
C2 noun /ɪˌkwɪvəˈkeɪʃən/

equivocation

Meaning
The use of ambiguous language to conceal the truth or to avoid committing oneself.
Example
The politician’s equivocation frustrated voters who wanted a clear answer.
C2 noun /ˈtaɪroʊ/

tyro

Meaning
A beginner or novice in a field or activity.
Example
As a tyro in programming, she needed constant guidance.
C2 noun /ˈmiːliərɪzəm/

meliorism

Meaning
The belief that the world tends to improve and that humans can aid its betterment.
Example
Her philosophy of meliorism kept her hopeful during difficult times.
C2 noun /ˌpærəˈnɔɪæk/

paranoiac

Meaning
A person who suffers from paranoia or exhibits extreme, irrational distrust and suspicion.
Example
The paranoiac refused to leave his house, fearing everyone was against him.
C2 noun /ˈkoʊdə/

coda

Meaning
the concluding passage of a piece of music or a literary work
Example
The novel ends with a reflective coda that ties up the themes.
C2 adjective /ˈɡlʌt.ən.əs/

gluttonous

Meaning
Excessively greedy in eating or consuming.
Example
His gluttonous appetite shocked everyone at the dinner table.
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.
C2 verb /ˈhʊdwɪŋk/

hoodwink

Meaning
To deceive or trick someone.
Example
The scammer hoodwinked many people with false promises.
C2 verb /ʌpˈbreɪd/

upbraid

Meaning
To scold or criticize someone harshly.
Example
The teacher upbraided the student for being late again.
C2 noun /ˈkɔːrnɪs/

cornice

Meaning
an ornamental molding around the wall of a room just below the ceiling
Example
The elegant cornice added a classical touch to the living room.
C2 noun /lɪˈbrɛtoʊ/

libretto

Meaning
The text of an opera or other long vocal work.
Example
She studied the libretto before attending the opera performance.
C2 verb /ˌoʊvərˈstraɪd/

overstride

Meaning
To stride over something; to step across with long steps.
Example
He managed to overstride the narrow stream with ease.
C2 adjective /ˈfæləbl/

fallible

Meaning
capable of making mistakes or being wrong
Example
Even experts are fallible and can make errors.
C2 noun /ˌɛksaɪˈteɪʃən/

excitation

Meaning
a state of great excitement or the process of stimulating activity
Example
The news created great excitation among the fans.
C2 adjective /ˈpæsɪbəl/

passible

Meaning
capable of feeling or suffering; susceptible to sensation or emotion (often theological)
Example
In some traditions, deities are described as passible, sharing human emotions.
C2 verb /juˈzɜrp/

usurp

Meaning
to take someone's position of power illegally or by force
Example
The general tried to usurp the king's throne.
C2 adjective /ˈdəʊ.lə.rəs/

dolorous

Meaning
Expressing great sorrow or distress.
Example
He spoke in a dolorous tone after the loss.
C2 adjective /əˈluːviəl/

alluvial

Meaning
Relating to or derived from alluvium (loose soil or sediment deposited by rivers).
Example
The farmers cultivate crops on the fertile alluvial plains.
C2 noun /ˈɔːldərmən/

alderman

Meaning
An elected member of a municipal council in certain cities and towns.
Example
The alderman proposed a new plan for community parks.
C2 noun /ˈræʃənəlɪzəm/

rationalism

Meaning
a belief or theory that opinions and actions should be based on reason and knowledge rather than religious belief or emotion
Example
Rationalism emphasizes logic and reasoning over faith.
C2 adjective /dɪˈmoʊniˌæk/

demoniac

Meaning
possessed, produced, or influenced by a demon; frenzied or violent
Example
The soldiers fought with demoniac fury.
C2 noun /ˌɪntərˈlɒkjətər/

interlocutor

Meaning
a person who takes part in a conversation or dialogue
Example
She was a skilled interlocutor during the debate.
C2 noun /ɪɡˈzɛmplɑːr/

exemplar

Meaning
A model or pattern to be copied or imitated.
Example
She is an exemplar of kindness and generosity.
C2 noun /ˈpoʊ.ə.si/

poesy

Meaning
poetry; the art or composition of poems
Example
The anthology was filled with romantic poesy.
C2 adjective /ˈfraʊzi/

frowzy

Meaning
Unkempt, messy, or having a musty, unpleasant smell.
Example
He entered the room with a frowzy appearance after sleeping on the couch.
C2 adjective /ˈəʊ.dər.əs/

Odorous

Meaning
having a strong smell; fragrant; aromatic
Example
The garden was filled with odorous flowers.
C2 noun /baɪˈmɛstər/

bimester

Meaning
A period of two months.
Example
The academic program is divided into six bimesters.
C2 adjective /ˌdaɪəˈlɛktɪkəl/

dialectical

Meaning
Relating to the logical discussion of ideas and opinions.
Example
She took a dialectical approach to solve the complex issue.
C2 adjective /ˈvɪrəl/

virile

Meaning
having traditionally masculine qualities, such as strength, energy, and sexual vigor
Example
The actor was admired for his virile appearance.
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.
C2 adjective /bɪˈwɪtʃɪŋ/

bewitching

Meaning
charming, enchanting, or captivating in a magical or irresistible way
Example
She wore a bewitching smile that captivated everyone in the room.
C2 adjective /ˌdɪskəmˈbɑːbjuleɪtɪd/

discombobulated

Meaning
confused and disoriented; feeling unsettled
Example
She looked discombobulated after hearing the unexpected news.
C2 noun /kjuːˈpɪdəti/

cupidity

Meaning
Excessive desire for wealth or possessions; greed.
Example
The king's downfall was caused by his cupidity.
C2 verb /fɪˈneɪɡəl/

finagle

Meaning
to obtain something by cleverness or trickery
Example
He finagled a free ticket by pretending to be a VIP guest.
C2 noun /ˈlɔːrdlɪŋ/

lordling

Meaning
A young or petty lord; someone of minor nobility.
Example
The arrogant lordling demanded respect despite his lack of experience.
C2 noun /ˈreɪmənt/

raiment

Meaning
clothing, especially fine or formal wear
Example
The king wore royal raiment during the ceremony.
C2 adjective ˌnjʊə.rəʊ.prəˈtek.tɪv

neuroprotective

Meaning
Having the ability to protect nerve cells from damage, degeneration, or impaired function.
Example
Omega-3 fatty acids have neuroprotective benefits.
C2 adjective /ˌaɪdəˈlɑːtrɪəs/

idolatrious

Meaning
Excessively devoted or reverent towards idols or false gods.
Example
The ancient tribe was known for its idolatrious practices.
C2 adjective /rɪˈmɪs/

remiss

Meaning
Negligent in performing a duty or responsibility.
Example
The manager was remiss in not checking the financial reports carefully.
C2 noun /ˈbɑːrtərər/

barterer

Meaning
A person who trades goods or services without using money.
Example
The barterer exchanged fruits for some pottery.
C2 noun ˈɡoʊldən ˈbʌtərflaɪ

Golden Butterfly

Meaning
A beautiful species of butterfly with golden coloration, symbolizing beauty and nature.
Example
The Golden Butterfly is a symbol of beauty and nature.
C2 noun /mɪˈsɑːɡəmi/

misogamy

Meaning
Hatred or dislike of marriage.
Example
His misogamy prevented him from ever settling down with a partner.