vacuous
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C2 adjective /ˈvækjuəs/

vacuous

Meaning
Having or showing a lack of thought or intelligence; mindless.
Example
She gave a vacuous smile during the serious discussion.
C2 noun ˈbaɪəʊˌsaɪd

biocide

Meaning
A chemical substance or microorganism intended to destroy, deter, render harmless, or exert a controlling effect on any harmful organism.
Example
Biocides help control pests and reduce the spread of diseases.
C2 noun /lɒŋ ˈwɪskəd ˈkætfɪʃ/

Long whiskered catfish

Meaning
A type of freshwater fish with long whisker-like barbels around its mouth
Example
The fisherman caught a long whiskered catfish in the river.
C2 noun /ˈʃɛvrən/

chevron

Meaning
A V-shaped pattern, often used in military insignia or design.
Example
The sergeant’s uniform displayed three chevrons on the sleeve.
C2 noun /ˌɛpɪzəʊˈɒtɪk/

epizootic

Meaning
An outbreak of disease affecting many animals of one kind at the same time.
Example
The farmer feared an epizootic might wipe out his cattle.
C2 noun /kəˈpærɪsən/

caparison

Meaning
an ornamental covering for a horse; rich and elaborate clothing or decoration
Example
The king’s horse was adorned with a golden caparison.
C2 verb /ˈvɛəriəˌɡeɪt/

variegate

Meaning
To diversify or mark with different colors or patterns.
Example
The artist used different shades to variegate the design.
C2 adjective /ɪnˈsɛnʃənt/

insentient

Meaning
Lacking perception, consciousness, or sensation.
Example
The rock is an insentient object with no awareness.
C2 adjective /ˈbaɪ.fərˌkeɪ.tɪd/

bifurcated

Meaning
Divided into two branches or parts.
Example
The river became bifurcated as it flowed around the island.
C2 adjective /traɪˈɛniəl/

triennial

Meaning
Occurring once every three years.
Example
The art festival is a triennial event in the city.
C2 noun /ˈprɪvɪti/

privity

Meaning
A close, private, or special relationship; in law, the direct connection between parties to a contract.
Example
There was no privity of contract between the supplier and the customer.
C2 noun /rɪˈkɒɡnɪzəns/

recognizance

Meaning
A legal obligation or bond entered into before a court, especially to ensure future appearance.
Example
He was released on his own recognizance.
C2 noun /ˈɡɪni/

guinea

Meaning
A former British gold coin; also refers to Guinea, a country in West Africa
Example
The antique coin was worth one guinea.
C2 adjective /ˈswɔːrði/

swarthy

Meaning
Having a dark complexion or skin tone.
Example
The sailor had a swarthy face from years under the sun.
C2 adjective /ˈhæŋ.dɔːɡ/

hangdog

Meaning
looking or feeling ashamed, guilty, or defeated.
Example
He gave me a hangdog look after being caught lying.
C2 adjective /ˈfæn.sɪ.ləs/

fanciless

Meaning
without imagination or creativity; plain or ordinary
Example
His drawings were simple and fanciless.
C2 noun /ˈpoʊ.ə.si/

poesy

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

threadbare

Meaning
Worn out and thin from too much use; shabby.
Example
His threadbare coat could not keep him warm in winter.
C2 adjective /ˈslɪpʃɒd/

slipshod

Meaning
done in a careless, sloppy, or untidy way
Example
The project failed due to slipshod planning.
C2 noun /dʒɔːnt/

jaunt

Meaning
A short journey or excursion, usually taken for pleasure.
Example
They went on a weekend jaunt to the countryside.
C2 verb /ˈɔːɡər/

augur

Meaning
To be a sign of something to come; to predict or foretell.
Example
Dark clouds augur a coming storm.
C2 adjective /ˌɪnɔːˈspɪʃəs/

Inauspicious

Meaning
unlucky; showing signs that future success is unlikely; unfavorable
Example
The dark clouds seemed inauspicious for the wedding.
C2 noun /məˈnɪʃən/

monition

Meaning
A warning or caution, often of a religious or moral nature.
Example
The priest gave a monition against dishonesty.
C2 verb /prəˈpaʊnd/

propound

Meaning
To put forward an idea, theory, or point for consideration.
Example
The professor propounded a new theory on climate change.
C2 noun /ˈbrɪtɪˌsɪzəm/

briticism

Meaning
a word, phrase, or characteristic feature of British English
Example
The word 'lorry' is a well-known Briticism.
C2 noun /ˈdɪktəm/

dictum

Meaning
A formal pronouncement, authoritative statement, or maxim.
Example
The judge’s dictum clarified the principle of equality before the law.
C2 noun /daɪˈvʌldʒəns/

divulgence

Meaning
the act of revealing or disclosing something secret or private
Example
The divulgence of company secrets caused a major scandal.
C2 verb /kənˈtjuːz/

contuse

Meaning
to bruise by striking or hitting
Example
He contused his arm when he fell off the bike.
C2 verb /ɪˈniː.bri.eɪt/

inebriate

Meaning
to intoxicate; to make someone drunk
Example
The strong wine was enough to inebriate even the most experienced drinker.
C2 noun /bjuːt/

butte

Meaning
an isolated hill with steep sides and a flat top, common in arid regions
Example
The travelers could see a tall butte rising in the desert.
C2 adjective /ˈdʌktaɪl/

ductile

Meaning
capable of being stretched into a thin wire without breaking; easily influenced
Example
Gold is a very ductile metal.
C2 adjective /ˈtɛsəleɪtɪd/

tessellated

Meaning
arranged in a pattern of repeated shapes fitting together without gaps
Example
The tessellated floor was made of colorful tiles arranged in perfect symmetry.
C2 noun əˈdrɔɪt.nəs

adroitness

Meaning
Cleverness or skill, especially in using the hands or mind; skillful dexterity.
Example
His adroitness in negotiations secured the deal.
C2 noun /ˌnɛɡlɪˈʒeɪ/

negligee

Meaning
A woman's light dressing gown, often made of thin or silky material.
Example
She wore a silk negligee before going to bed.
C2 adjective /fəˈsiːʃəs/

facetious

Meaning
Treating serious issues with deliberately inappropriate humor
Example
He was being facetious when he said he wanted to live on the moon.
C2 adjective /ˈfæð.əm.ləs/

fathomless

Meaning
impossible to understand or measure; very deep
Example
The ocean seemed fathomless as it stretched to the horizon.
C2 noun /ˈkæt.aɪ.ɒn ɪksˌtʃeɪndʒ/

cation-exchange

Meaning
A chemical process in soil that helps retain nutrients.
Example
The cation-exchange capacity of soil affects plant growth.
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 noun /ˈprɒsɪlaɪt/

proselyte

Meaning
A person who has converted from one belief, opinion, or religion to another.
Example
She became a proselyte after converting to a new faith.
C2 adjective /ˈkælkjʊləbl/

calculable

Meaning
Capable of being calculated, estimated, or measured.
Example
The risk involved in the project is calculable.
C2 noun /ˈvɪtrioʊl/

vitriol

Meaning
harsh and bitter criticism
Example
The politician faced vitriol from the public.
C2 noun /ˈsɪbɪləns/

sibilance

Meaning
A hissing or hushing sound, especially in speech with 's' or 'sh'.
Example
The poet used sibilance to create a soft, hissing effect in the verse.
C2 adjective ˈɛr.jʊ.daɪt

erudite

Meaning
Having or showing great knowledge or learning; scholarly and intellectual.
Example
The professor's erudite lecture fascinated the students.
C2 noun /ˌrɛv.əˈkeɪ.ʃən/

revocation

Meaning
The act of officially canceling or withdrawing something.
Example
The court ordered the revocation of his license.
C2 noun /ˌproʊɪˈbɪʃənɪst/

prohibitionist

Meaning
A person who supports or advocates prohibition, especially of alcohol.
Example
The prohibitionist campaigned against the sale of liquor in the town.
C2 noun /ˈɡræn.juːl/

granule

Meaning
A small compact particle of a substance.
Example
Each granule of salt sparkled under the sunlight.
C2 noun /hɔːɡ plʌm/

Hog plum

Meaning
tropical fruit with yellow skin and sour taste
Example
Hog plums are often used to make pickles and chutneys.
C2 adjective /ˌhɜːrkjʊˈliːən/

herculean

Meaning
Requiring great strength or effort; very difficult to perform.
Example
It was a herculean task to rebuild the city after the disaster.
C2 verb /djuːp/

dupe

Meaning
To deceive or trick someone into believing or doing something.
Example
He was duped into buying a fake watch.
C2 verb /ɪnˈveɪ/

inveigh

Meaning
To speak or write about something with great hostility and criticism.
Example
He inveighed against the corruption in government.
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 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 noun /ˈkjuːbeb ˈpepər/

Cubeb Pepper

Meaning
aromatic spice with a slightly bitter taste and cooling aftertaste
Example
Cubeb pepper is used in traditional Indonesian cuisine.
C2 adjective /pəˈrɒnɪməs/

paronymous

Meaning
Words that are derived from the same root or sound alike.
Example
The words 'effect' and 'effective' are paronymous.
C2 noun /ˈsɪkəfənt/

sycophant

Meaning
A person who acts obsequiously toward someone important in order to gain advantage.
Example
The manager was surrounded by sycophants who agreed with everything he said.
C2 noun /rɪˈkwaɪtəl/

requital

Meaning
The act of returning something, such as a favor, service, or punishment; repayment or retaliation.
Example
She offered her time in requital for his kindness.
C2 noun juːˈbɪkwɪti

ubiquity

Meaning
The fact of appearing everywhere or of being very common.
Example
The ubiquity of smartphones has transformed communication.
C2 adjective /ˈtɔːdri/

tawdry

Meaning
cheap and showy but of poor quality
Example
She wore a tawdry necklace that broke easily.
C2 noun /prəˈfjuːʒən/

profusion

Meaning
an abundance or large quantity of something
Example
Spring brought a profusion of wildflowers to the valley.
C2 noun /ˌpaɪrəˈmeɪniə/

pyromania

Meaning
An uncontrollable desire to set things on fire.
Example
The suspect was diagnosed with pyromania after repeated incidents of arson.
C2 adjective /ˌmɛtəˈfɪzɪkəl/

metaphysical

Meaning
Relating to the branch of philosophy that deals with the fundamental nature of reality and existence.
Example
He spent years studying metaphysical questions about life and being.
C2 adjective /ˌtaɪtˈfɪstɪd/

tightfisted

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

morass

Meaning
A complicated or confused situation; a swampy or boggy ground.
Example
The project got stuck in a bureaucratic morass.
C2 noun /ˈæbɪs/

abbess

Meaning
the woman in charge of a convent of nuns
Example
The abbess welcomed the visitors to the convent.
C2 noun /ˈprɛləsi/

prelacy

Meaning
The office, dignity, or system of church government by prelates.
Example
The medieval church was dominated by prelacy and its traditions.
C2 adjective /ɪmˈperɪʃəbəl/

Imperishable

Meaning
not subject to decay; lasting forever; eternal
Example
The imperishable beauty of classical art continues to inspire generations.
C2 adjective /ɪˈfiːt/

effete

Meaning
Lacking vitality, strength, or effectiveness; weak and overrefined.
Example
The empire became effete after centuries of indulgence.
C2 noun /ˈkɒd.ɪ.sɪl/

codicil

Meaning
a legal document that makes changes or additions to an existing will
Example
He added a codicil to his will to include his granddaughter.
C2 noun /ˈpʌlkrɪˌtjuːd/

pulchritude

Meaning
physical beauty
Example
The actress was admired for her pulchritude as well as her talent.
C2 adjective /ˈɪnmoʊst/

inmost

Meaning
Situated at the very heart or deepest part; most private or secret.
Example
She revealed her inmost thoughts to her closest friend.
C2 adjective /rəˈʃɛrʃ/

recherche

Meaning
Rare, exotic, or obscure, often in a sophisticated or refined way.
Example
The gallery displayed many recherche artworks from unknown artists.
C2 noun /ˈluː.mən/

lumen

Meaning
A unit of luminous flux, measuring the amount of visible light emitted by a source.
Example
The bulb produces 800 lumens of light.
C2 noun /ˈhɛksəˌpɒd/

hexapod

Meaning
An insect or other organism with six legs.
Example
The scientist observed a hexapod crawling on the leaf.
C2 noun /əˈluːviən/

alluvion

Meaning
The gradual increase of land by the deposit of soil from water; also, a flood or overflow of water.
Example
The river’s alluvion added new fertile land to the village fields.
C2 verb /ɪˈspaɪ/

espy

Meaning
To catch sight of or notice something, especially from a distance.
Example
From the hilltop, she espied a small village in the valley.
C2 noun /ˈmɒrəlɪst/

moralist

Meaning
A person who teaches or promotes moral principles and values.
Example
The author was known as a strict moralist in his writings.
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 /ˌɪn.trəˈmɪt/

intromit

Meaning
To insert or introduce something into a place or body.
Example
The doctor carefully intromitted the instrument into the wound.
C2 noun /næˈteɪʃən/

natation

Meaning
The act or sport of swimming.
Example
She took lessons in natation to improve her swimming skills.
C2 noun /ˈkwɪkˌsɪlvər/

quicksilver

Meaning
Mercury; a liquid metal, or something that is quick and unpredictable.
Example
His mood was as changeable as quicksilver.
C2 noun /əˈkwɪtəns/

acquittance

Meaning
a written receipt acknowledging payment or discharge of a debt
Example
He demanded an acquittance after paying the loan.
C2 noun /koʊˈæɡjələnt/

coagulant

Meaning
a substance that causes blood or another liquid to clot
Example
The doctor applied a coagulant to stop the bleeding quickly.
C2 noun /ˌfɪziˈɑːɡrəfi/

physiography

Meaning
the study of the physical features of the earth's surface
Example
He specialized in physiography to understand the landscape of the region.
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.
C2 verb /ˌmɪskənˈstruː/

misconstrue

Meaning
To interpret something wrongly or misunderstand the meaning.
Example
She misconstrued his silence as anger.
C2 noun /dʒuːt/

jute

Meaning
a long, soft, shiny plant fiber used to make rope, bags, sacks, and coarse cloth
Example
Jute is widely used to make eco-friendly bags and ropes.
C2 verb /dɒf/

doff

Meaning
to take off an item of clothing, especially a hat, as a sign of respect
Example
He doffed his hat as the procession passed.
C2 noun /əkˈsɛʃən/

accession

Meaning
the attainment of a position of rank or power, especially a monarch or president; the formal acceptance of an agreement or treaty
Example
The king's accession to the throne was celebrated with great ceremony.
C2 adjective /ɪˈnɪmɪkəl/

inimical

Meaning
tending to obstruct or harm; unfriendly or hostile
Example
The policy was inimical to the country's economic growth.
C2 adjective /ˈfrɪski/

Frisky

Meaning
lively; energetic; playful; mischievous
Example
The frisky puppy ran around the garden playfully.
C2 adverb /ˈwɪtɪŋli/

wittingly

Meaning
Consciously and intentionally; on purpose.
Example
He wittingly withheld information from the police.
C2 noun /ˈæntiruːm/

anteroom

Meaning
A small room leading to a main one, often used as a waiting area.
Example
The guests waited in the anteroom before being called inside.
C2 adjective /ˌnɒnˈtrɪviəl/

nontrivial

Meaning
Not simple or easy; requiring effort or significant thought.
Example
Solving the equation turned out to be a nontrivial task.
C2 noun /ˈfɔːrˌseɪl/

foresail

Meaning
The principal sail set on the foremast of a sailing vessel.
Example
The crew adjusted the foresail to catch the wind.
C2 noun /dɪsˈdʒʌŋkʃən/

disjunction

Meaning
A lack of connection between things; separation or disunity.
Example
There is a clear disjunction between theory and practice.
C2 adjective /ˈkrɛstˌfɔːlən/

crestfallen

Meaning
sad and disappointed
Example
He looked crestfallen after hearing the bad news.
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 /ˈoʊdiəs/

odious

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

lattice

Meaning
A structure of crossed strips arranged in a grid or crisscross pattern.
Example
The garden was decorated with a wooden lattice covered in vines.
C2 noun /ˈbærəˌɡræf/

barograph

Meaning
an instrument that records changes in atmospheric pressure
Example
The scientist checked the barograph for pressure variations.
C2 noun /ˈfɔːθ.raɪt.nəs/

forthrightness

Meaning
The quality of being honest and straightforward; directness.
Example
Her forthrightness made her a respected journalist.
C2 adjective /kənˈtraɪt/

contrite

Meaning
feeling or showing remorse or guilt
Example
She was contrite after realizing her mistake.
C2 noun /ˌperəˈreɪʃən/

peroration

Meaning
The concluding part of a speech, often intended to inspire or persuade.
Example
The politician's peroration left the audience applauding enthusiastically.
C2 noun /ˈspɒt.ɪd sneɪk hed/

Spotted snake head

Meaning
a type of freshwater fish with spotted markings and an elongated head resembling a snake
Example
The spotted snake head is a popular fish for aquaculture in South Asia.
C2 noun /nɪb/

nib

Meaning
the pointed end of a pen used for writing or drawing
Example
He dipped the nib into the ink before writing.
C2 noun /kənˈtjuː.ʒən/

contusion

Meaning
a bruise or injury without breaking the skin
Example
The boxer had several contusions after the match.
C2 noun /ˈkænə/

Canna

Meaning
a tropical flowering plant with large, colorful flowers and broad leaves
Example
The bright orange canna lilies grew tall beside the pond.
C2 noun /ˈkɒntrətɑː̃/

contretemps

Meaning
an unexpected and unfortunate event or disagreement; a minor dispute
Example
There was a small contretemps between the two colleagues during the meeting.
C2 verb /ˈfɛstər/

fester

Meaning
to become worse or more intense, often through neglect or infection
Example
If grievances are ignored, they may fester into resentment.
C2 adjective /ˌluː.mɪˈnɛs.ənt/

luminescent

Meaning
Emitting light without heat, glowing softly.
Example
The luminescent watch dial was visible in the dark.
C2 noun /nɪt/

nit

Meaning
The egg or young form of a louse or other parasitic insect.
Example
The teacher noticed nits in the child’s hair.
C2 noun /ˈdrɪvəl/

drivel

Meaning
silly or nonsensical talk
Example
The politician’s speech was full of meaningless drivel.
C2 noun /ˈdəʊ.lər/

dolor

Meaning
A state of great sorrow or distress.
Example
The nation was in deep dolor after the tragedy.
C2 noun /ˈnɛkrəˌmænsi/

necromancy

Meaning
the practice of communicating with the dead, often to predict the future
Example
Ancient texts described rituals of necromancy performed by priests.
C2 adjective /ˌɛf.ɪˈkeɪ.ʃəs/

efficacious

Meaning
Successful in producing a desired or intended result; effective.
Example
The vaccine proved highly efficacious in preventing infections.
C2 adjective /ˈvɒkətɪv/

vocative

Meaning
relating to a case in grammar used for directly addressing someone
Example
In Latin, the vocative case is used when directly calling someone by name.
C2 verb /ˈæmərˌtaɪz/

amortize

Meaning
To gradually reduce or pay off a debt with regular payments.
Example
They plan to amortize the mortgage over 20 years.
C2 noun /ˈɡʌp.i fɪʃ/

Guppy fish

Meaning
a small colorful freshwater fish popular in aquariums, known for its vibrant colors and easy breeding
Example
The guppy fish is perfect for beginners who want to start an aquarium.
C2 noun /ˈzɛfər/

zephyr

Meaning
A soft gentle breeze.
Example
A warm zephyr blew through the valley.
C2 adjective /ˈwɪznd/

wizened

Meaning
Shriveled, wrinkled, or withered, often due to age.
Example
The wizened tree stood in the field for centuries.
C2 noun /ˌbæstərdaɪˈzeɪʃən/

bastardization

Meaning
the act of corrupting, degrading, or misrepresenting something
Example
Critics called the remake a bastardization of the original film.