nontrivial
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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 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 /ˈhʌmdrʌm/

humdrum

Meaning
Lacking excitement or variety; dull and monotonous.
Example
She grew tired of the humdrum routine of office life.
C2 adjective /ɔːˈrɪfərəs/

auriferous

Meaning
Containing or producing gold.
Example
The miners discovered an auriferous vein in the mountains.
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 noun /ɔːˈreɪʃən/

oration

Meaning
A formal speech, especially one given on a ceremonial occasion
Example
The president delivered an inspiring oration.
C2 noun /ˈhɔːtɪnəs/

haughtiness

Meaning
The appearance or quality of being arrogantly superior and disdainful.
Example
His haughtiness made him unpopular among his peers.
C2 noun/verb /ˈkʌdʒ.əl/

cudgel

Meaning
A short, thick stick used as a weapon; to beat with a cudgel.
Example
The guard used a cudgel to chase away the thief.
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 noun /ˌdɪləˈtænt/

dilettante

Meaning
A person who takes up an art, activity, or subject merely for amusement, especially in a superficial way.
Example
He was dismissed as a dilettante in the art world because he lacked formal training.
C2 noun /ɛmˈpɔːriəm/

emporium

Meaning
A large retail store selling a wide variety of goods.
Example
They visited the new emporium to buy furniture and home decor.
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 /ˈɔːfəl/

offal

Meaning
the internal organs and entrails of an animal used as food; waste parts
Example
The butcher prepared sausages using pork offal.
C2 verb /əˈsɪdɪfaɪ/

acidify

Meaning
to make something acidic or more acidic
Example
Farmers worry that pollution will acidify the soil.
C2 adjective /ˈwɪspi/

wispy

Meaning
Thin, delicate, and weak in appearance or form.
Example
Her wispy hair blew gently in the breeze.
C2 adjective /rɪˈfʌldʒənt/

refulgent

Meaning
Shining brightly; radiant.
Example
The refulgent sun lit up the entire valley.
C2 noun kwɔːrk

quark

Meaning
A fundamental subatomic particle that combines to form protons and neutrons.
Example
Quarks form protons and neutrons.
C2 adjective /ˈdəʊl.səm/

dolesome

Meaning
Filled with grief or sadness; mournful.
Example
The dolesome ballad brought tears to their eyes.
C2 noun /sɪˈdɪʃ.ən/

Sedition

Meaning
conduct or speech inciting people to rebel against authority; treason
Example
The activist was charged with sedition for his inflammatory speeches.
C2 noun /ˈlɒkətɪv/

locative

Meaning
a grammatical case indicating location or place
Example
In Latin, the locative case is used to indicate location.
C2 noun /ˌbæstərdaɪˈzeɪʃən/

bastardization

Meaning
the act of corrupting, degrading, or misrepresenting something
Example
Critics called the remake a bastardization of the original film.
C2 noun /ˈækmi/

acme

Meaning
the highest point of achievement or excellence
Example
Winning the award was the acme of his career.
C2 noun /ˌræʃioʊsɪˈneɪʃən/

ratiocination

Meaning
the process of reasoning or logical thinking
Example
His ratiocination impressed the judges during the debate.
C2 phrase ˌdʒʊə.rɪs.pruːˈden.ʃəl ˈbentʃ.mɑːk

jurisprudential benchmark

Meaning
A legal standard or precedent that serves as a reference point for future legal decisions.
Example
The decision set a jurisprudential benchmark.
C2 noun /ˈfɪl.ɪ.staɪn/

philistine

Meaning
a person who is indifferent or hostile to culture and the arts
Example
He was criticized as a philistine for dismissing modern art.
C2 verb /ˌnɒnˈplʌst/

nonplussed

Meaning
Past tense of nonplus; surprised and unsure how to react.
Example
He stood nonplussed at the strange remark.
C2 verb /ˌmɪskənˈstruː/

misconstrue

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

unyoke

Meaning
To release from a yoke or to free from restraint or obligation.
Example
The farmer unyoked the oxen after a long day of work.
C2 noun /ˈʌndərlɪŋ/

underling

Meaning
a person of low rank or importance; a subordinate
Example
The manager ordered his underlings to finish the task quickly.
C2 verb /bɪˈdɔːb/

bedaub

Meaning
to smear or cover with a sticky or dirty substance
Example
The children bedaubed the wall with paint.
C2 adjective /ˈsætərˌnaɪn/

saturnine

Meaning
slow and gloomy in mood
Example
His saturnine expression made everyone in the room uncomfortable.
C2 verb /ˌkaʊˈtaʊ/

kowtow

Meaning
To act in an excessively subservient or obedient manner.
Example
He refused to kowtow to the unreasonable demands.
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 noun /eɪˈklɑː/

eclat

Meaning
Brilliant success, acclaim, or great public approval.
Example
The artist's debut performance was met with great éclat.
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 /ˈmɒrəlaɪz/

moralize

Meaning
To comment on issues of right and wrong, often with an air of superiority.
Example
He tends to moralize about other people's choices.
C2 adjective /ˈreə.rɪ.faɪd/

rarefied

Meaning
Of high moral, intellectual, or cultural value; distant from ordinary life.
Example
He works in the rarefied world of classical music.
C2 noun /krəˈnɒmɪtər/

chronometer

Meaning
An instrument for measuring time precisely, especially used in navigation.
Example
The sailor relied on the chronometer to determine his position at sea.
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 /ˌdʒer.ɪˈmaɪ.æd/

Jeremiad

Meaning
a long mournful complaint or lamentation; a list of woes; a prolonged expression of grief
Example
The newspaper editorial was a jeremiad about the decline of moral values in society.
C2 noun /ˌɔːskʌlˈteɪʃən/

auscultation

Meaning
The act of listening to internal sounds of the body, typically using a stethoscope.
Example
The doctor performed auscultation to check the patient’s lungs.
C2 verb /ˈwɪni/

whinny

Meaning
to make the high-pitched sound a horse makes
Example
The horse whinnied when it saw its rider.
C2 noun /ˈhen.ə/

Henna

Meaning
a reddish-brown dye made from the powdered leaves of a tropical shrub, used to color hair and decorate skin
Example
The bride's hands were beautifully decorated with intricate henna patterns for her wedding ceremony.
C2 adjective /ˈneb.jə.ləs/

Nebulous

Meaning
vague or unclear; lacking definite form; hazy
Example
His plans for the future remain nebulous and unclear.
C2 noun /kəˈkɒfəni/

cacophony

Meaning
A harsh, discordant mixture of sounds.
Example
The cacophony of horns made it impossible to concentrate.
C2 adjective /hərˈmɛtɪk/

hermetic

Meaning
Completely sealed, especially so that no air can enter or escape.
Example
The medicine was kept in a hermetic container.
C2 noun /ˈfiːəlti/

fealty

Meaning
loyalty or allegiance, especially to a sovereign or lord
Example
The knight swore fealty to his king.
C2 verb /ɡɪld/

gild

Meaning
to cover something with a thin layer of gold or to make something appear more attractive than it really is
Example
The craftsman gilded the frame to give it a luxurious look.
C2 noun /əˈpɜːrtənəns/

appurtenance

Meaning
an accessory or supplementary part of something
Example
The garage is an appurtenance of the main house.
C2 noun /ˈtælən/

talon

Meaning
A claw, especially one belonging to a bird of prey.
Example
The eagle gripped the fish with its sharp talons.
C2 adjective /ˈkæp.ʃəs/

Captious

Meaning
tending to find fault or raise petty objections; fault-finding; critical
Example
His captious remarks about every small detail made the meeting very unpleasant.
C2 noun /ˈfʌŋkʃəˌnɛri/

functionary

Meaning
a person who has official duties in an organization, especially one with little authority
Example
The minor functionary was responsible for filing reports.
C2 noun /noʊl koʊl/

Knol khol

Meaning
round bulbous vegetable from cabbage family with pale green color and mild taste
Example
Knol khol can be eaten raw in salads or cooked in curries.
C2 adjective /ɪnˈkoʊ.ɪt/ or /ɪnˈkoʊ.eɪt/

inchoate

Meaning
Just begun and not fully formed; rudimentary.
Example
His inchoate ideas needed more research to be developed.
C2 verb /ˈvɪtrɪfaɪ/

vitrify

Meaning
to turn into glass or a glass-like substance by heat
Example
Sand can vitrify under intense heat.
C2 noun /ˈfænˌtæzəm/

phantasm

Meaning
an illusion, ghost, or figment of the imagination
Example
The child claimed to see a phantasm in the old house.
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 /ˈhaɪərəˌɡlɪf/

hieroglyph

Meaning
A picture or symbol used in ancient writing systems, especially Egyptian writing.
Example
The walls of the temple were covered in hieroglyphs.
C2 verb /ˈfjuːmɪˌɡeɪt/

fumigate

Meaning
to disinfect or purify an area by using chemical fumes
Example
They fumigated the warehouse to kill the insects.
C2 noun, adjective /klɛərˈvɔɪənt/

clairvoyant

Meaning
a person who claims to have clairvoyance; having the ability to see beyond normal senses
Example
The clairvoyant predicted that she would travel abroad soon.
C2 verb /ˈpɔːltər/

palter

Meaning
to act insincerely or deceitfully; to equivocate or lie
Example
He paltered when asked about his involvement in the deal.
C2 noun /ˈnjuː.trɪ.mənt/

nutriment

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

pinnace

Meaning
a small boat, often carried by a larger ship
Example
The sailors used a pinnace to reach the shore.
C2 adjective /ləˈsɪviəs/

lascivious

Meaning
showing an overt and often offensive sexual desire
Example
The lascivious remarks made everyone uncomfortable.
C2 noun /ˈeɪ.pi.ə.rɪst/

apiarist

Meaning
a person who keeps and tends bees for honey production
Example
The apiarist collected fresh honey from the hives.
C2 noun /ˈdʒʌŋk.tʃər/

jucture

Meaning
a particular point in time, especially one of great importance or crisis
Example
At this critical jucture, the company must decide whether to expand or downsize.
C2 verb /ˈdɒdə/

dodder

Meaning
To move in a weak and unsteady way, especially due to old age.
Example
The old man doddered across the street with a cane.
C2 adjective /flɛgˈmæt.ɪk/

phlegmatic

Meaning
having an unemotional and stolidly calm disposition
Example
Despite the chaos, he remained phlegmatic and composed.
C2 adjective /ˈnjuːbaɪl/

nubile

Meaning
of a young woman, sexually mature and suitable for marriage
Example
The village was celebrating the festival with its nubile maidens dancing.
C2 noun /ˈmɒdɪkəm/

modicum

Meaning
a small or moderate amount of something, especially something valuable or desirable
Example
She showed a modicum of patience during the long meeting.
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 adjective /ˈvɪnsəbl/

vincible

Meaning
capable of being overcome or defeated
Example
The enemy seemed vincible after losing their main base.
C2 noun /ˈstrɪk.tʃər/

stricture

Meaning
a restriction or limitation; a critical remark
Example
The new law placed a severe stricture on free speech.
C2 verb /ˈfrɪtər/

fritter

Meaning
To waste time, money, or energy on trivial matters.
Example
He frittered away his savings on unnecessary gadgets.
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 adjective /ɪnˈsuːsiənt/

insouciant

Meaning
Showing a casual lack of concern; carefree.
Example
He gave an insouciant shrug and walked away.
C2 noun /nɛˈkroʊsɪs/

necrosis

Meaning
the death of body tissue due to disease, injury, or lack of blood supply
Example
The doctor explained that the patient’s wound showed signs of necrosis.
C2 noun /ɡrænˈtiː/

grantee

Meaning
A person or organization that receives a grant or benefit.
Example
The grantee must submit a progress report every six months.
C2 noun /dɪˈpoʊnənt/

deponent

Meaning
A person who gives testimony under oath, especially in a written deposition.
Example
The deponent confirmed the accuracy of the statement during the trial.
C2 adjective /prəˈhɪbɪtɔːri/

prohibitory

Meaning
Serving or tending to prohibit or forbid.
Example
The prohibitory laws were strictly enforced in the region.
C2 noun ˌæm.ɔː.tɪˈzeɪ.ʃən

amortization

Meaning
The process of paying off debt with regular payments over time.
Example
The amortization schedule showed a 10-year repayment plan.
C2 verb /ˈblækˌbɔːl/

blackball

Meaning
to exclude someone socially or vote against their membership in a group or club
Example
He was blackballed from the club after the controversy.
C2 verb /læmˈpuːn/

lampoon

Meaning
to publicly criticize or ridicule someone or something with humor, irony, or sarcasm
Example
The cartoonist lampooned the politician for his contradictory statements.
C2 verb /əˈdjuːs/

adduce

Meaning
To provide evidence or reasons to support an argument or idea.
Example
The lawyer adduced several examples to support his case.
C2 noun /ˈoʊdiəm/

odium

Meaning
general or widespread hatred or disgust directed toward someone as a result of their actions
Example
The scandal brought public odium on the corrupt minister.
C2 noun /ˈveɪnɡlɔːri/

vainglory

Meaning
Excessive vanity or boastfulness about one's achievements.
Example
His speech was filled with vainglory and self-praise.
C2 verb /ˈseɪʃiˌeɪt/

satiate

Meaning
To satisfy fully, especially with food or desire.
Example
The large meal satiated his hunger.
C2 adjective /ˌɒbsəˈlɛsnt/

obsolescent

Meaning
Becoming outdated or on the way to becoming obsolete.
Example
The obsolescent technology could not compete with modern devices.
C2 noun /ˈmeɪsə/

mesa

Meaning
An isolated flat-topped hill with steep sides, found in arid regions.
Example
The hikers stopped to admire the mesa rising above the desert floor.
C2 adjective /ˌævəˈrɪʃəs/

avaricious

Meaning
having or showing extreme greed for wealth or material gain
Example
The avaricious landlord increased the rent unfairly.
C2 noun /ˈkæl.əm.ni/

Calumny

Meaning
the making of false and defamatory statements about someone in order to damage their reputation
Example
The politician sued the newspaper for spreading calumny about his personal life.
C2 adjective /əˈstrɪndʒənt/

astringent

Meaning
sharp or severe in manner or style; also describes a substance that contracts skin or body tissues
Example
Her astringent tone silenced the noisy class.
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 /ˈzɛfər/

zephyr

Meaning
A soft gentle breeze.
Example
A warm zephyr blew through the valley.
C2 noun /ˈdɒkɪt/

docket

Meaning
a list or schedule of cases to be tried in a court or items to be done
Example
The judge reviewed the docket before starting the session.
C2 verb /ˈæbrəɡeɪt/

abrogate

Meaning
To formally repeal, cancel, or abolish a law, agreement, or custom.
Example
The government decided to abrogate the outdated treaty.
C2 noun/verb /ˈkætˌkɔːl/

catcall

Meaning
A loud whistle or shout of disapproval or sexual harassment directed at someone.
Example
The actress ignored the catcalls from the crowd.
C2 noun /ɡæsˈtraɪtɪs/

gastritis

Meaning
Inflammation of the lining of the stomach.
Example
The doctor diagnosed him with gastritis after his endoscopy.
C2 noun /brɪˈtæniə/

britannia

Meaning
the personification of Britain, often shown as a woman with a helmet and shield
Example
Britannia has been a symbol of Britain since Roman times.
C2 adjective /ˈruːmi/

rheumy

Meaning
Watery, especially referring to the eyes.
Example
His rheumy eyes showed signs of age and fatigue.
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 /rɪˈkʌmbənt/

recumbent

Meaning
lying down or in a resting position
Example
He was found recumbent on the sofa after a long day.
C2 adjective /ɪnˈɡreɪʃiˌeɪtɪŋ/

ingratiating

Meaning
Charming or flattering in a way intended to gain favor.
Example
His ingratiating smile made everyone trust him quickly.
C2 verb /ˈsʌli/

sully

Meaning
to damage the purity, integrity, or reputation of something
Example
The scandal sullied the politician’s reputation.
C2 adjective /mæɡˈnɪləkwənt/

magniloquent

Meaning
using high-flown or pompous language
Example
The politician’s magniloquent speech impressed the crowd.
C2 verb /lʌɡˈʒʊrieɪt/

luxuriate

Meaning
to enjoy something in a self-indulgent way; to take pleasure in great comfort
Example
She luxuriated in the warm bubble bath after a long day.
C2 verb /ˈdʒɒɡəl/

joggle

Meaning
to shake slightly; to move or cause to move with quick, small jerks
Example
He joggled the table and the vase nearly fell.
C2 verb /ˈdʒɛn.juˌflɛkt/

genuflect

Meaning
to bend one or both knees as a sign of reverence or worship
Example
The worshippers genuflect before the altar.
C2 noun /ˈlɔɪtərər/

loiterer

Meaning
A person who lingers aimlessly in a place without purpose.
Example
The police questioned the loiterer outside the store.
C2 noun /ˈdɪfɪdəns/

diffidence

Meaning
Lack of self-confidence; shyness or modesty.
Example
Her diffidence made it hard for her to speak in public.
C2 noun /kənˌdʒiː.niˈæl.ə.t̬i/

congeniality

Meaning
The quality of being pleasant, friendly, and easy to talk to.
Example
His congeniality makes him popular among friends.
C2 verb /ˈwaŋɡl/

wangle

Meaning
To achieve something by clever or sometimes dishonest persuasion or trickery.
Example
He wangled a free ticket to the concert.
C2 noun /ˈsuːpsɒ̃/

soupcon

Meaning
a very small quantity of something; a trace
Example
She added just a soupcon of spice to the dish.
C2 adjective /fəˈloʊniəs/

felonious

Meaning
relating to or involved in serious criminal activity
Example
He was charged with felonious assault after the incident.
C2 adjective /juːˈnɪsənənt/

unisonant

Meaning
Sounding together or in harmony.
Example
The unisonant voices created a powerful effect.
C2 noun /ˈbɛvi/

bevy

Meaning
A large group of people or things of a particular kind.
Example
A bevy of swans floated on the lake.
C2 noun /ˈfʌriər/

furrier

Meaning
A person who prepares or deals in furs.
Example
The furrier displayed fine coats in his shop.
C2 adjective /ɪnˈskruːtəbl̩/

inscrutable

Meaning
impossible to understand or interpret
Example
His inscrutable expression made it hard to know what he was thinking.
C2 adjective /səˈpʌlkrəl/

sepulchral

Meaning
Relating to a tomb or burial; gloomy, dismal.
Example
The abandoned house had a sepulchral silence about it.
C2 adjective /əˈpɜːrtənənt/

appurtenant

Meaning
Belonging to or associated with something, often used in legal/property contexts.
Example
The right of way is appurtenant to the landowner’s property.
C2 verb /lɪm/

limn

Meaning
to depict or describe something vividly in words or art.
Example
The author limned the beauty of the countryside.