slough
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C2 verb /slʌf/ or /sluː/

slough

Meaning
To shed or cast off (like dead skin); also a swampy or muddy area.
Example
The snake sloughed off its old skin.
C2 noun /ɔːrˈθɑːɡrəfi/

orthography

Meaning
The conventional spelling system of a language.
Example
English orthography can be confusing for learners.
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.
C2 adjective /ˈɜːrsaɪn/

ursine

Meaning
Relating to or resembling a bear.
Example
The man’s ursine strength amazed everyone.
C2 verb /dɪsˈbɜːrdən/

disburden

Meaning
to relieve someone of a burden or load
Example
She disburdened herself of worries by sharing them with her friend.
C2 verb /ˈprɑː.məl.ɡeɪt/

promulgate

Meaning
To announce or make a law, decree, or idea officially known.
Example
The government promulgated new regulations on data privacy.
C2 noun /ˌhaɪdroʊˈfoʊbiə/

hydrophobia

Meaning
Extreme or irrational fear of water; historically, another name for rabies.
Example
After being bitten by a stray dog, the man was treated for hydrophobia.
C2 noun /ˈkæbəˌlɪzəm/

cabalism

Meaning
The doctrines, practices, or secretive dealings of a cabal.
Example
The historian wrote extensively about cabalism in the royal court.
C2 adjective /spæzˈmɒdɪk/

spasmodic

Meaning
occurring irregularly or in sudden bursts
Example
The patient experienced spasmodic coughing during the night.
C2 noun /ˌvɛəriəˈɡeɪʃən/

variegation

Meaning
The appearance of differently colored zones in the leaves, flowers, or stems of plants.
Example
Variegation makes the foliage look more attractive.
C2 noun /ˈkloʊtʃər/

cloture

Meaning
a procedure for ending a debate and taking a vote.
Example
The Senate invoked cloture to end the lengthy debate.
C2 noun /ˌɒn.əˌmæt.əˈpiː.ə/

onomatopoeia

Meaning
The formation of a word from a sound associated with what is named.
Example
The word 'buzz' is an example of onomatopoeia.
C2 adjective /ˈvæpɪd/

vapid

Meaning
lacking liveliness, flavor, or interest; dull and uninspired
Example
The lecture was so vapid that half the audience fell asleep.
C2 noun /ˈeɪ.viˌɛr.i/

aviary

Meaning
a large enclosure for keeping birds
Example
The zoo built a new aviary for exotic parrots.
C2 adjective /ˌæl.ɪˈmen.tər.i/

alimentary

Meaning
relating to nourishment or the organs of digestion
Example
The doctor explained the role of the alimentary canal in digestion.
C2 noun /ˈæltruɪst/

altruist

Meaning
a person who has an unselfish concern for the welfare of others
Example
He is an altruist who always puts others' needs before his own.
C2 verb /dʒaɪb/

gibe

Meaning
To make insulting or mocking remarks; to taunt.
Example
The fans gibed at the losing team.
C2 verb /fɪltʃ/

filch

Meaning
to steal something in a sneaky or petty way
Example
He tried to filch a candy bar from the shop.
C2 verb /əˈbrɪdʒ/

abridge

Meaning
to shorten a text without losing its meaning
Example
The editor decided to abridge the long novel for young readers.
C2 adjective /əbˈstrɛpərəs/

obstreperous

Meaning
Noisy and difficult to control.
Example
The obstreperous students disrupted the class.
C2 noun /bɜːrˈlɛsk/

burlesque

Meaning
A humorous and exaggerated imitation of a serious work; a type of theatrical entertainment involving comedy and parody.
Example
The play was a clever burlesque of traditional opera.
C2 noun /ˈzaɪtɡaɪst/

zeitgeist

Meaning
The defining spirit or mood of a particular period of history as shown by the ideas and beliefs of the time.
Example
The novel perfectly captures the zeitgeist of the 1960s.
C2 adjective /ˈtæsɪtɜrn/

taciturn

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

sequestrate

Meaning
To take legal possession of assets until a debt is paid or disputes are resolved.
Example
The court decided to sequestrate the company's property.
C2 noun /ˈɑːrbərɪˌkʌltʃər/

arboriculture

Meaning
the cultivation and management of trees and shrubs
Example
He studied arboriculture to improve urban green spaces.
C2 noun /ˈkrɪptəɡræm/

cryptogram

Meaning
a text written in code or cipher
Example
The detective solved the cryptogram hidden in the letter.
C2 adjective /ˈsmɑːrmi/

smarmy

Meaning
Excessively flattering or ingratiating, often insincerely.
Example
The salesman gave a smarmy pitch that felt fake.
C2 verb /əˈreɪn/

arraign

Meaning
to formally accuse someone in a court of law and ask them to respond to the charges
Example
The suspect was arraigned before the judge this morning.
C2 noun /ˈvoʊkəbəl/

vocable

Meaning
a word, term, or sound that has meaning
Example
The dictionary contained thousands of vocables from different languages.
C2 noun /ˌsuːdəˈnɪmɪti/

pseudonymity

Meaning
the practice or state of using a pseudonym
Example
The author maintained pseudonymity throughout her career.
C2 adjective /ˈbiːstiəl/

bestial

Meaning
Relating to beasts; showing savagery, brutality, or lacking human sensibility.
Example
The prisoners were treated in a bestial manner.
C2 noun /ˌsɪnjuˈɒsɪti/

sinuosity

Meaning
The quality or state of being winding, curving, or having many turns.
Example
The sinuosity of the river made navigation challenging.
C2 verb /ˌɪntərˈsiːd/

intercede

Meaning
to act or plead on behalf of someone in difficulty or trouble; to intervene between parties to help resolve a dispute
Example
She interceded with the teacher to give her brother another chance.
C2 adjective /ˈɡaɪlləs/

guileless

Meaning
Innocent and without deceit
Example
Her guileless smile won everyone’s heart.
C2 adjective /ˈmɪn.ɪ.skjuːl/

miniscule

Meaning
Extremely small or tiny.
Example
The error was so miniscule that nobody noticed it.
C2 verb /swɪl/

swill

Meaning
to drink something greedily or in large amounts
Example
He swilled down the beer in seconds.
C2 adjective /ˈdəʊ.lə.rəs/

dolorous

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

cession

Meaning
The formal giving up of rights, property, or territory, especially by a state.
Example
The treaty resulted in the cession of land to the neighboring country.
C2 adjective /ˈflɒrɪd/

florid

Meaning
Having a red or flushed complexion; or excessively ornate and intricate.
Example
The speaker’s florid style made the lecture hard to follow.
C2 adjective /ˈvɪndɪkeɪtɪv/

vindicative

Meaning
showing a tendency to vindicate or justify; inclined to defend
Example
Her vindicative tone showed that she strongly believed in her innocence.
C2 noun /fɔːn/

faun

Meaning
a mythological creature that is half human and half goat
Example
The sculpture depicted a playful faun dancing in the forest.
C2 noun /ˈreɪdɪks/

radix

Meaning
the base or root of something; the number on which a system of numeration is built
Example
In mathematics, the decimal system has a radix of ten.
C2 verb /əˈleɪ/

allay

Meaning
to reduce the intensity of fear, worry, or pain; to calm
Example
The teacher tried to allay the students’ fears before the exam.
C2 noun /roʊˈtʌn.də/

rotunda

Meaning
a large circular building or hall, often with a dome
Example
Tourists gathered inside the grand rotunda of the capitol.
C2 noun /ˈɛpɪtɑːf/

epitaph

Meaning
A short text written on a tombstone in memory of the deceased.
Example
The gravestone bore an epitaph honoring the soldier’s bravery.
C2 noun /dɛnˈdrɒlədʒi/

dendrology

Meaning
the scientific study of trees and woody plants
Example
He is studying dendrology at the university.
C2 noun /əˈfeɪ.ʒə/

aphasia

Meaning
a medical condition that causes loss of ability to speak or understand language
Example
After the stroke, she was diagnosed with aphasia.
C2 verb /aɪˈdɒləˌtraɪz/

idolatrize

Meaning
To worship idols; to regard with excessive devotion or admiration.
Example
They began to idolatrize the statue as a deity.
C2 noun /ɡɜːrθ/

girth

Meaning
the measurement around the middle of something, especially a person's waist or a tree trunk
Example
The tree's girth measured nearly five feet.
C2 noun /ˌhoʊ.mi.oʊˈsteɪ.sɪs/

homeostasis

Meaning
The tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.
Example
The human body maintains homeostasis through temperature regulation.
C2 noun /ˈhɑːstəlri/

hostelry

Meaning
An inn or lodging place, especially one for travelers.
Example
They stayed at a small hostelry near the mountains.
C2 verb /ʌnˈɑːrm/

unarm

Meaning
to remove weapons from someone or to deprive of means of attack or defense
Example
The soldiers were ordered to unarm the prisoners.
C2 adjective /bɒmˈbæstɪk/

bombastic

Meaning
using pompous or inflated language with little meaning
Example
The professor’s bombastic lecture impressed no one.
C2 adjective ɪˈnɛfəbl

ineffable

Meaning
Too great or extreme to be expressed or described in words.
Example
The beauty of the landscape was ineffable.
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 /bɪˈdaɪzən/

bedizen

Meaning
to dress up or decorate in a showy or tasteless way
Example
She was bedizened with cheap jewelry.
C2 noun /ɪnˈkʌmbrəns/

encumbrance

Meaning
a burden or obstacle that makes progress or movement difficult
Example
Debt can become a serious encumbrance in life.
C2 noun /ˈkeɪ.nə.naɪt/

canaanite

Meaning
a member of a people who lived in the ancient land of Canaan in the Middle East
Example
The Canaanites were known for their advanced trade networks.
C2 noun /ˈeɪʒən siː bæs/

Asian sea bass

Meaning
a large predatory fish found in coastal waters and estuaries of the Indo-Pacific region, prized for its white meat
Example
Asian sea bass is highly valued in aquaculture for its fast growth.
C2 noun /ˈskɔːrpiən fɪʃ/

Scorpion fish

Meaning
a type of fish with venomous spines that belongs to the family Scorpaenidae
Example
The scorpion fish has dangerous spines that can inject venom.
C2 adjective /kəˈdævərəs/

cadaverous

Meaning
Resembling a corpse; very pale, thin, or bony.
Example
His cadaverous appearance shocked everyone at the party.
C2 noun /ˌsɜːrkəmləˈkjuːʃn/

circumlocution

Meaning
the use of many words when fewer would do, especially to avoid stating something directly
Example
The politician's speech was filled with circumlocution.
C2 noun /dɪˈkæmɪtər/

decameter

Meaning
A metric unit of length equal to ten meters.
Example
The field was measured in decameters for accuracy.
C2 noun /ˈdʒɒlɪti/

jollity

Meaning
lively and cheerful activity or celebration
Example
The wedding was full of jollity and laughter.
C2 adjective /prɪˈhɛnsaɪl/

prehensile

Meaning
adapted for seizing or grasping, especially by wrapping around an object
Example
The monkey used its prehensile tail to hang from the branch.
C2 verb /dɪsˈpɔːrt/

disport

Meaning
To amuse oneself in a lively or playful way.
Example
The children disported themselves in the garden.
C2 noun /ˈfɜːrnəri/

fernery

Meaning
a place or greenhouse where ferns are cultivated
Example
The garden's fernery was full of exotic plants.
C2 noun /vəˈliːɪti/

velleity

Meaning
A wish or inclination not strong enough to lead to action.
Example
His interest in painting never grew beyond a mere velleity.
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 /ˌiːvənˈhændɪd/

evenhanded

Meaning
Fair and impartial; showing no bias or favoritism.
Example
The judge was praised for her evenhanded approach to the case.
C2 adjective /ˈrɛkriənt/

recreant

Meaning
cowardly or unfaithful to duty
Example
The recreant soldier abandoned his post in fear.
C2 noun ˌæɡ.roʊˈiː.koʊˌsɪs.təm

agroecosystem

Meaning
An ecological system centered on agricultural activities and processes.
Example
A healthy agroecosystem improves soil fertility.
C2 adjective ˌnjʊəroʊˈkɒɡnɪtɪv

neurocognitive

Meaning
Related to brain information processing and memory power
Example
Neurocognitive functions decline due to lack of sleep.
C2 adjective /luːˈɡuːbriəs/

lugubrious

Meaning
looking or sounding sad and dismal
Example
His lugubrious expression made everyone feel uneasy.
C2 noun /ˈvæsəl/

vassal

Meaning
A person or country in a subordinate position to another, especially in feudal times under a lord.
Example
The king granted land to his vassal in return for loyalty and service.
C2 noun /ˈsfɛrɔɪd/

spheroid

Meaning
A three-dimensional shape that is almost spherical but slightly flattened or elongated.
Example
The Earth is not a perfect sphere but an oblate spheroid.
C2 noun /ˌpoʊpʊˈriː/

potpourri

Meaning
a mixture of dried flowers and spices kept in a bowl to perfume a room; a miscellaneous collection
Example
The living room was filled with the scent of potpourri.
C2 verb /ɪnˈθrɔːl/

enthral

Meaning
To captivate or hold someone’s full attention.
Example
The magician’s performance enthralled the audience.
C2 noun /ˈhɔːrn.bɪl/

Hornbill

Meaning
a large tropical bird with a large curved beak and often a horn-like projection
Example
The colorful hornbill perched on the highest branch.
C2 verb /ɡɜːrd/

gird

Meaning
to encircle with a belt or band; to prepare for action
Example
The knight girded his sword before battle.
C2 noun /ˈpjuːdʒɪlɪzəm/

pugilism

Meaning
The practice or sport of boxing.
Example
He studied the art of pugilism in his youth.
C2 noun /fəˈlɪsɪti/

felicity

Meaning
intense happiness; the ability to find appropriate expression for one's thoughts
Example
She was known for her felicity in conversation and cheerful nature.
C2 noun /ˈkætəˌklɪzəm/

cataclysm

Meaning
A sudden and violent event that causes great destruction or upheaval.
Example
The earthquake was a cataclysm that reshaped the city.
C2 adjective /ʌnˈtʃeɪst/

Unchaste

Meaning
not celibate; having engaged in sexual relations; lacking moral purity
Example
The conservative society considered her behavior unchaste and improper.
C2 adjective /ˈkræbɪd/

crabbed

Meaning
difficult to read or understand; ill-tempered
Example
His handwriting was crabbed and almost illegible.
C2 noun /ˈpæsɪt/

Passet

Meaning
Fresh cheese curds; cottage cheese made from curdled milk
Example
The cook prepared fresh passet by curdling warm milk with lemon juice.
C2 adjective ˈkoʊ.dʒənt

cogent

Meaning
Clear, logical, and convincing.
Example
His cogent argument convinced the jury.
C2 verb /ɪˈmeɪʃieɪt/

emaciate

Meaning
To make abnormally thin or weak, usually because of illness or lack of food.
Example
The prisoners were emaciated after months without proper food.
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 ˈfaɪ.təʊˌnjuː.tri.ənts

phytonutrients

Meaning
Bioactive compounds found in plants that have health benefits beyond basic nutrition.
Example
Green tea contains powerful phytonutrients.
C2 verb /ˈdɔːd(ə)l/

dawdle

Meaning
to waste time by being slow or idle
Example
Stop dawdling and finish your homework.
C2 verb /ɪnˈɡreɪʃiˌeɪt/

ingratiate

Meaning
To gain favor or approval by deliberate effort, often in a flattering way.
Example
She tried to ingratiate herself with her boss by complimenting him often.
C2 verb /ˈʌndjʊleɪt/

undulate

Meaning
To move with a smooth, wave-like motion.
Example
The snake undulated across the sand.
C2 /laɪð/

lithe

Meaning
thin, supple, and graceful in movement
Example
The lithe dancer captivated the audience with her graceful spins.
C2 noun /ˈriːdʒənt/

regent

Meaning
a person who rules in place of a monarch when the monarch is absent or too young
Example
The prince acted as regent until the king came of age.
C2 noun /ˈbreɪziər/

Brazier

Meaning
a worker in brass; a portable container for burning charcoal or coal
Example
The brazier crafted beautiful brass ornaments.
C2 noun /ˈhɛklər/

heckler

Meaning
A person who interrupts a speaker with rude or aggressive comments.
Example
The politician remained calm despite the heckler shouting from the crowd.
C2 verb /feɪz/

faze

Meaning
to disturb or disconcert someone; to cause to feel unsettled
Example
She was not fazed by the unexpected question.
C2 noun /rɪˈsɪdɪvɪst/

recidivist

Meaning
A person who repeatedly commits crimes, especially after having been punished.
Example
The police identified him as a recidivist who had been arrested several times before.
C2 noun, adjective /ˌtætərdɪˈmeɪliən/

tatterdemalion

Meaning
A person dressed in ragged clothes; ragged or dilapidated in appearance.
Example
A tatterdemalion wandered the streets in search of food.
C2 adjective /prɪˈmɒnɪtəri/ or /ˌpriːməˈnɪtəri/

premonitory

Meaning
giving a warning or prediction about something, especially something unpleasant
Example
He ignored the premonitory signs of illness.
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 noun /əbˈhɒrəns/

abhorrence

Meaning
a feeling of strong disgust or hatred
Example
He expressed his abhorrence of racial discrimination.
C2 adjective /ˌtaɪtˈfɪstɪd/

tightfisted

Meaning
unwilling to spend money; stingy
Example
He is so tightfisted that he refuses to tip at restaurants.
C2 noun /ˈhjuːməs/

humus

Meaning
The dark, organic material in soil formed from decayed plants and animals.
Example
The gardener enriched the soil with humus to improve plant growth.
C2 adjective /dɪˈspjuːtəbl/

Disputable

Meaning
open to debate or argument; questionable
Example
The facts in the case are disputable and need further investigation.
C2 noun /ˌhaɪpəkəˈnektɪvɪti/

hyperconnectivity

Meaning
The state of being extensively connected to other people, places, information, etc., through digital technology.
Example
Hyperconnectivity has changed the dynamics of human interaction.
C2 noun /ˌpriːpəˈzɛʃən/

prepossession

Meaning
An opinion or feeling formed beforehand; a prejudice or preoccupation.
Example
His prepossession in favor of tradition made him resist change.
C2 noun /kənˈtɔːrʃən/

contortion

Meaning
a twisted or bent shape; the act of twisting out of the normal shape
Example
The gymnast's contortion amazed the audience.
C2 noun /ˌkɒzməˈpɒlɪtənɪzəm/

cosmopolitanism

Meaning
the ideology that all human beings belong to a single community
Example
Cosmopolitanism promotes respect and understanding across cultures.
C2 adjective /ˌɪnɪkˈsprɛsəbl/

inexpressible

Meaning
Too strong or extreme to be expressed in words.
Example
She felt inexpressible joy at the news of her success.
C2 noun /ˈfaɪər.brænd/

firebrand

Meaning
a person who is passionate about a cause, often inciting change or action
Example
The activist was a true firebrand, inspiring everyone around him to join the protest.
C2 noun /ɡəˈruːlɪti/

garrulity

Meaning
Excessive talkativeness, especially about trivial matters.
Example
His garrulity made it hard to focus during the meeting.
C2 verb /læmˈbeɪst/

lambaste

Meaning
to criticize someone or something harshly; to reprimand severely
Example
The teacher lambasted the students for not completing their homework.
C2 adjective /juːˈnɪsənənt/

unisonant

Meaning
Sounding together or in harmony.
Example
The unisonant voices created a powerful effect.
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 /kəˈlʌmnieɪt/

calumniate

Meaning
To make false and damaging statements about someone; to slander.
Example
He was furious when he realized they had calumniated his reputation.
C2 noun, verb /ˈæseɪ/

assay

Meaning
To test or analyze the quality, purity, or content of a substance; the act of such testing.
Example
The scientists assayed the mineral sample for gold content.
C2 noun /ˈlæriət/

lariat

Meaning
A long rope with a noose at one end used to catch animals such as cattle or horses.
Example
The cowboy threw his lariat to catch the stray horse.
C2 adjective /ˈbɒni/

Bonny

Meaning
cheerful; pretty; attractive
Example
The bonny child played happily in the garden.
C2 adjective /səˈɡeɪ.ʃəs/

sagacious

Meaning
Having or showing keen mental discernment and good judgment; wise.
Example
His sagacious leadership saved the company from failure.