caulk
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C2 verb /kɔːk/

caulk

Meaning
to seal a crack or gap with a waterproof filler
Example
He caulked the window frames to stop the draft.
C2 noun /ɪmˌprɒb.əˈbɪl.ə.ti/

Improbability

Meaning
the quality or state of being improbable; unlikely to be true or to happen
Example
The improbability of winning the lottery twice didn't stop her from buying tickets.
C1 noun /əˈpærəl/

apparel

Meaning
Clothing, especially formal or special clothes.
Example
The store specializes in wedding apparel.
C1 verb /əˈpiːz/

appease

Meaning
to calm or pacify someone by meeting their demands
Example
The manager tried to appease the angry customer.
C1 verb /ˈɡrændstænd/

grandstand

Meaning
To seek attention or applause by behaving or speaking in a showy way.
Example
The actor was accused of grandstanding during the charity event.
C1 adjective /ɪˈɡriːdʒəs/

egregious

Meaning
Outstandingly bad; shocking.
Example
The company was fined for its egregious safety violations.
B2 noun /hɪp/

hip

Meaning
The part of the body on either side of the pelvis, or informal: trendy and fashionable.
Example
She put her hands on her hips.
B2 noun rɪˈpʌb.lɪk

republic

Meaning
A state in which supreme power is held by the people and their elected representatives, with an elected or nominated president rather than a monarch.
Example
A republic is governed by representatives of the people.
C1 adjective /səbˈvɜːrsɪv/

subversive

Meaning
seeking or intended to undermine or overthrow an established system or authority
Example
The group was banned for its subversive activities.
A2 noun /əˈdɪʃ.ən/

Addition

Meaning
the process of adding numbers; something that is added
Example
The addition of a new room made the house more spacious.
B2 adjective /slaɪ/

sly

Meaning
Clever in a deceitful or cunning way.
Example
She gave him a sly smile.
B2 adjective /ˈkɜːrtiəs/

courteous

Meaning
polite, respectful, or considerate in manner
Example
The staff at the hotel were very courteous to all guests.
C2 adjective /ˈpɛktərəl/

pectoral

Meaning
Relating to the chest or breast.
Example
The athlete focused on strengthening his pectoral muscles.
C1 noun /niːʃ/

Niche

Meaning
A specialized segment of the market for a particular kind of product or service.
Example
Finding the right niche is key to a successful business.
B2 noun ɡrɪd

grid

Meaning
A network of interconnected lines or a system for distributing electricity over a wide area.
Example
The national power grid must be upgraded.
C2 noun /rɪˈpʌɡ.nəns/

repugnance

Meaning
intense disgust or strong aversion towards something
Example
She felt deep repugnance at the cruelty of the act.
C2 noun /ˈbaɪpɛd/

biped

Meaning
An animal that walks on two feet.
Example
Humans are examples of biped creatures.
C1 verb /mɪns/

mince

Meaning
to cut into very small pieces; to walk with short quick steps
Example
She minced the garlic for the recipe.
B2 noun /ˈteɪkˌɔːf/

takeoff

Meaning
The moment an aircraft leaves the ground and begins to fly; also a sudden rise or start in activity or success.
Example
The plane's takeoff was delayed due to bad weather.
C1 noun /pəˈvɪliən/

pavilion

Meaning
A large tent or temporary building, often used for events or exhibitions.
Example
The wedding reception was held in a decorated pavilion.
C1 verb /ˌpriːdɪˈspoʊz/

predispose

Meaning
To make someone more likely to behave in a certain way or be affected by something.
Example
His genetics may predispose him to diabetes.
B2 noun /ˈdʌklɪŋ/

duckling

Meaning
a young duck
Example
The mother duck led her ducklings to the pond.
C2 noun /ˈrɛkluːsəri/

reclusory

Meaning
A place for seclusion or retreat, especially for a recluse or hermit.
Example
The monk spent years in the reclusory away from society.
C1 verb /bæsk/

bask

Meaning
to lie in warmth and light; to enjoy something pleasurable
Example
The cat basks in the sunny window.
B1 adjective /əˈlɜːrt/

alert

Meaning
quick to notice and respond to potential danger or issues; aware and attentive
Example
The alert dog barked at the stranger approaching the house.
B2 noun /ˈsɪnənɪm/

Synonym

Meaning
a word or phrase that means exactly or nearly the same as another word or phrase in the same language
Example
Happy and joyful are synonyms.
B1 noun /pɪl/

pill

Meaning
a small round piece of medicine to be swallowed
Example
He took a pill to relieve his headache.
C2 noun /dɪˈfoʊliənt/

defoliant

Meaning
a chemical that causes leaves to drop from plants, often used in warfare or agriculture
Example
The army sprayed defoliant to clear the forest cover.
B2 verb /ɪnˈkaʊntər/

encounter

Meaning
to unexpectedly meet someone or experience something, especially something difficult or new
Example
During the hike, we encountered a wild bear.
C1 noun ˌɒb.səˈlɛs.əns

obsolescence

Meaning
The process of becoming obsolete or outdated and no longer used.
Example
The rapid advancement of technology leads to the obsolescence of old devices.
B1 noun /kræb/

Crab

Meaning
a crustacean with a broad carapace, stalked eyes, and five pairs of legs, the first pair of which are modified as pincers
Example
The crab scuttled sideways across the sand.
B2 noun wɪnd ˈen.ə.dʒi

wind energy

Meaning
Energy generated from wind using wind turbines to convert kinetic energy into electrical power.
Example
Wind energy is harnessed in Masdar City.
C1 verb /əˈpɛnd/

append

Meaning
to add something as an attachment or supplement, usually at the end of a document or list
Example
She decided to append a note to the end of the report.
C1 noun /ˈflæt.ər.i/

Flattery

Meaning
excessive and insincere praise, given especially to further one's own interests
Example
His constant flattery made everyone suspicious of his true motives.
C1 noun /kənˈsep.ʃən/

Conception

Meaning
the forming of an idea or plan; the fertilization of an ovum by a sperm; the action of conceiving
Example
The conception of this innovative project took several months of brainstorming.
B1 noun /dəˈrɛktər/ or /daɪˈrɛktər/

director

Meaning
a person who manages or oversees a company, department, or film
Example
The director gave final approval for the new movie script.
C1 adjective /rɪˈpen.tənt/

Repentant

Meaning
feeling or expressing sincere regret and remorse; sorry for one's actions
Example
The repentant thief returned the stolen money.
B2 adverb /ˈdʒɛnjʊɪnli/

genuinely

Meaning
in a truthful and sincere way
Example
She genuinely cares about the environment.
B2 verb /ɪnˈdʒɛkt/

inject

Meaning
To introduce a substance, especially a drug, into the body using a needle.
Example
The nurse will inject the vaccine into the patient's arm.
C1 noun /ɪmˈpjʊərəti/

impurity

Meaning
the state of being unclean or contaminated; a substance that makes something impure
Example
The scientist removed every impurity from the water sample.
B2 noun /ˈen.ə.dʒi sɪˈkjʊə.rɪ.ti/

energy security

Meaning
The reliable availability of energy sources at an affordable price for a nation or region.
Example
Energy security ensures consistent supply.
C2 adjective /ˈpjuːtətɪv/

putative

Meaning
commonly accepted or supposed; generally regarded as such
Example
He is the putative father of the child.
B2 adjective /ˌʌnˈnoʊ.tɪst/

Unnoticed

Meaning
not seen or observed; ignored
Example
His hard work went unnoticed by his manager.
C2 verb /bɪˈhəʊv/

behove

Meaning
British spelling of 'behoove'; to be appropriate or necessary
Example
It would behove the company to listen to its customers.
A2 noun /dʒoʊk/

Joke

Meaning
a thing that someone says to cause amusement or laughter; something not to be taken seriously
Example
Everyone laughed at his funny joke during the dinner party.
A2 noun /ˈmaʊn.tɪn/

Mountain

Meaning
a large natural elevation of earth and rock rising above the ground
Example
They climbed the highest mountain in the region.
B1 noun /dʒʌɡ/

Jug

Meaning
a large container for liquids, with a narrow mouth and a handle
Example
She poured fresh orange juice from the glass jug into her cup.
C1 noun /ɪnˈdʒʌŋkʃən/

injunction

Meaning
A judicial order restraining a person from an action or compelling a certain act.
Example
The court issued an injunction to stop the company from polluting the river.
C2 adjective /ˈsɪlvən/

sylvan

Meaning
Relating to or characteristic of the woods or forest.
Example
The cottage was set in a sylvan landscape full of tall trees.
B1 adjective /ˈiː.ɡər/

Eager

Meaning
showing keen interest; enthusiastic; having or showing desire and excitement
Example
She was eager to start her new job.
C1 noun /ˈtwɪstər/

twister

Meaning
A tornado or something that twists; also refers to a challenging tongue twister.
Example
The twister destroyed several houses in the village.
C2 noun /ˈænɪməlˌkjuːl/

animalcule

Meaning
A microscopic animal, especially a protozoan or other minute organism.
Example
The scientist observed an animalcule moving under the microscope.
C2 noun /ˈfoʊksl/

forecastle

Meaning
The forward part of a ship below the deck, traditionally used as living quarters for the crew.
Example
The sailors gathered in the forecastle after their shift.
C1 noun /wɪsp/

wisp

Meaning
A small thin or twisted bunch, piece, or amount of something.
Example
A wisp of smoke rose from the chimney.
C2 verb /ˈekspərˌɡeɪt/

expurgate

Meaning
To remove offensive or objectionable parts from a text or speech.
Example
The publisher decided to expurgate the novel before reprinting it.
B2 noun ɪkˈspænʃən

expansion

Meaning
The action of becoming larger or more extensive; growth or development.
Example
Volunteering helps in the expansion of social networks.
B2 noun /ˈtwaɪ.laɪt/

Twilight

Meaning
the soft glowing light from the sky when the sun is below the horizon; a period of decline
Example
We walked along the beach at twilight.
C1 noun /ˈstreɪnər/

Strainer

Meaning
a device having holes punched in it or made of crossed wires for separating solid matter from a liquid
Example
Use a strainer to drain the pasta water.
C2 verb /ˈtɪtər/

titter

Meaning
to laugh in a quiet, nervous, or restrained way
Example
The students began to titter when the projector froze.
C1 noun /ˈfɔːrdʒəri/

forgery

Meaning
the crime of making fake documents, money, or artworks
Example
The bank detected a forgery in the signature on the cheque.
B2 noun /ˈmes.ɪn.dʒər/

Messenger

Meaning
a person who carries messages or communications between parties
Example
The messenger delivered important battle plans to the commander.
C1 noun /ˈhiːdəˌnɪzəm/

hedonism

Meaning
The pursuit of pleasure and self-indulgence as the highest goal.
Example
The lifestyle of the rich is often criticized as pure hedonism.
C2 noun /ˌɛksɪˈkreɪʃən/

execration

Meaning
An act of cursing or denouncing someone or something with hatred.
Example
The dictator’s name was spoken with execration after his fall.
B2 noun /dəˈmeɪn/

domain

Meaning
An area of knowledge, activity, or territory over which control is exercised.
Example
Mathematics is her main domain of expertise.
C1 noun /plaɪt/

Plight

Meaning
a dangerous, difficult, or unfortunate situation
Example
The refugees were in a desperate plight.
A2 adjective /ʌnˈhel.θi/

Unhealthy

Meaning
harmful to health; not in good health; detrimental to well-being
Example
Eating too much fast food is unhealthy for your body.
C2 adjective /woʊnt/ or /wɔːnt/

wont

Meaning
accustomed or used to doing something
Example
She rose early, as she was wont to do.
A1 pronoun /aʊər/

our

Meaning
belonging to or associated with the speaker and one or more other people
Example
This is our house.
B1 noun ɪˈnɪʃətɪv

initiative

Meaning
An act or strategy intended to resolve a difficulty or improve a situation; a fresh approach to something.
Example
NASA's initiative to return humans to the Moon is ambitious.
B2 verb /skreɪp/

scrape

Meaning
to remove or damage the surface of something by rubbing or scratching; to collect something by effort
Example
He scraped his knee while playing football.
C1 adjective /ˌæl.truˈɪs.tɪk/

altruistic

Meaning
Showing a disinterested and selfless concern for the well-being of others.
Example
Her altruistic nature led her to volunteer for charities.
C1 verb; noun /beltʃ/

belch

Meaning
to expel air noisily from the stomach through the mouth; to emit or pour out suddenly and forcefully
Example
After drinking the soda, he belched loudly.
B1 noun ɪɡˈzek.jə.tɪv

executive

Meaning
The branch of government responsible for implementing and enforcing laws.
Example
The executive body enforces policies.
B1 noun /ɪnˈɡriːdiənt/

ingredient

Meaning
A component part or element of something, especially in a recipe.
Example
Flour is a key ingredient in baking bread.
C1 verb /ˈɪə.mɑːrk/

earmark

Meaning
To designate funds, resources, or time for a particular purpose.
Example
The government has earmarked funds for education.
C1 verb /kənˈvɜːrdʒ/

converge

Meaning
to come together from different directions; to meet at a point
Example
The roads converge at the city center.
B1 adjective /ænˈtiːk/

Antique

Meaning
old and valuable; belonging to ancient times
Example
She collected antique furniture from the Victorian era.
B1 noun ruːlz ənd ˌrɛɡjʊˈleɪʃənz

rules and regulations

Meaning
Official orders and laws that control how something is done.
Example
Rules and regulations alone cannot change attitudes.
B1 adjective /əˈmjuː.zɪŋ/

Amusing

Meaning
causing laughter or providing entertainment; funny; enjoyable
Example
The children found the clown's performance very amusing.
C2 noun /breɪ/

brae

Meaning
A hillside or slope, especially in Scotland.
Example
They climbed up the grassy brae to see the sunset.
C2 noun /ˌniːoʊˈlætɪn/

neo-latin

Meaning
The use of Latin language for scholarly, scientific, and literary purposes after the medieval period.
Example
Many scientific names are derived from Neo-Latin.
B1 verb /ˈɡɑːsɪp/

gossip

Meaning
to talk about other people's private lives, often in an unkind way
Example
They love to gossip about their neighbors.
B2 noun /ɪnˈtɪəriər/

interior

Meaning
the inside part of something; inner area of a place or object
Example
The interior of the hotel was beautifully decorated.
C1 noun ˈmaɪ.krəʊˌnjuː.tri.ənt

micronutrient

Meaning
Essential nutrients required by the body in small amounts, including vitamins and minerals.
Example
Iron and zinc are essential micronutrients for growth.
B2 noun /ˈkɒk.roʊtʃ/

Cockroach

Meaning
a flat brown insect that is commonly found in kitchens and other warm places
Example
A cockroach ran across the kitchen floor quickly.
C2 noun /dʒuːt liːf/

Jute leaf

Meaning
the edible leaves of the jute plant, commonly eaten as a leafy green vegetable
Example
Jute leaf is rich in vitamins and minerals and is often cooked with lentils in Bengali cuisine.
C1 noun /hɪˈstɪəriə/

hysteria

Meaning
An uncontrollable outburst of emotion or fear, often characterized by irrational behavior.
Example
The crowd was in a state of hysteria during the concert.
B2 noun ˈsʌbstɪˌtut

substitute

Meaning
A person or thing acting or serving in place of another.
Example
Money cannot be a substitute for genuine happiness.
C1 adjective /ˈɡrʌdʒɪŋ/

grudging

Meaning
Reluctant or unwilling; given or allowed only with hesitation.
Example
She gave him a grudging smile after the argument.
C1 noun /ˌɪn.dʒəˈnjuː.ɪ.ti/

ingenuity

Meaning
The quality of being clever, original, and inventive.
Example
His ingenuity led to groundbreaking innovations.
B2 noun /tɛkˈnɪʃən/

technician

Meaning
a person skilled in the practical aspects of a particular science, art, or job
Example
The technician repaired the computer within an hour.
B2 adjective /ʌnˈhɛlpfəl/

unhelpful

Meaning
not providing help or support; making a situation harder rather than easier
Example
His unhelpful attitude slowed down the entire project.
B2 noun ˈdʒes.tʃərz

gestures

Meaning
Body movements, especially of hands, face, or body when speaking.
Example
Effective gestures add emphasis to a speech.
C1 noun /ˈdɑː.mə.saɪl/

domicile

Meaning
A person's legal residence or permanent home.
Example
He declared Canada as his legal domicile.
B2 adjective /ˈprɑːspərəs/

Prosperous

Meaning
successful in material terms; flourishing financially
Example
The company became very prosperous after launching their new product.
C2 noun /ˈpɛtjʊləns/

petulance

Meaning
The quality of being childishly sulky or bad-tempered.
Example
His petulance during the meeting annoyed everyone.
C2 noun /ræpˈskæliən/

rapscallion

Meaning
A mischievous or cheeky person; a rascal.
Example
The little rapscallion hid his brother’s shoes as a prank.
C2 noun /ˈtɔːrpər/

torpor

Meaning
A state of physical or mental inactivity; lethargy.
Example
The heat induced a state of torpor in the workers.
B2 adverb /ˈmen.tə.li/

Mentally

Meaning
relating to the mind; in terms of mental processes
Example
She was mentally preparing herself for the exam.
C2 adverb /əˈsʌndər/

asunder

Meaning
into separate parts; apart
Example
The ancient empire was torn asunder by war.
C1 verb /ˈlɪŋɡər/

linger

Meaning
to stay in a place longer than necessary; to persist
Example
The smell of coffee lingered in the kitchen.
C2 noun /meɪndʒ/

mange

Meaning
a skin disease in animals caused by parasitic mites, leading to hair loss and sores
Example
The stray dog was suffering from mange.
B1 verb /splɪt/

split

Meaning
to divide or separate into parts or groups
Example
He split the log in two with an axe.
B2 adjective /stɪf/

Stiff

Meaning
not easily bent or changed; rigid; firm
Example
The old wooden board was too stiff to bend.
B2 adjective ɪnˈev.ɪ.tə.bəl

inevitable

Meaning
Certain to happen; unavoidable.
Example
Death is an inevitable part of life.
C1 noun /ˈtraɪ.pɒd/

tripod

Meaning
A three-legged stand used to support a camera, telescope, or other object.
Example
The photographer set up his camera on a tripod.
B2 noun kənˌtæm.ɪˈneɪ.ʃən

contamination

Meaning
The process of making something less pure by exposure to or addition of a poisonous or polluting substance.
Example
Contamination of air leads to health issues.
C1 noun /ˈroʊz ˈwɔː.tər/

Rose-water

Meaning
a flavored water made by steeping rose petals in water, used in cooking and cosmetics
Example
She added a few drops of rose-water to the dessert.
B2 verb /swaɪp/

swipe

Meaning
to move your finger across a touch screen or to hit with a sweeping motion
Example
He swiped left on the photo.
C1 adjective /ˈprɒdɪɡəl/

prodigal

Meaning
spending money or resources freely and recklessly; wastefully extravagant
Example
The prodigal son returned home after wasting his inheritance.
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.
A2 noun /əˈpɔɪnt.mənt/

Appointment

Meaning
an arrangement to meet someone at a particular time and place; the action of appointing someone to a job or position
Example
I have a doctor's appointment at 3 PM.
B2 verb /nɒd/

nod

Meaning
to move one's head down and up to show agreement or acknowledgment
Example
She nodded in agreement with the proposal.
A1 pronoun /hɜːrz/

hers

Meaning
used to refer to something that belongs to or is associated with a female person previously mentioned or easily identified.
Example
That blue bag is hers.
B1 noun /ˈfeɪvər/

favor

Meaning
An act of kindness or approval.
Example
She asked him for a small favor.
C1 noun /ɑːˌtɪkjʊˈleɪʃən/

articulation

Meaning
The action of putting into words an idea or feeling of a specified type.
Example
His articulation during the debate impressed everyone.
C1 noun delˈteɪɪk ˈlændskeɪp

deltaic landscape

Meaning
A geographical area formed by sediment deposits at the mouth of a river, creating a triangular land formation.
Example
Bangladesh has a unique deltaic landscape.
C1 noun /ɪkˈspɛktənsi/

expectancy

Meaning
the state of expecting something; anticipation or likelihood
Example
There was a sense of expectancy in the room before the results were announced.
B1 adjective /ˈɪrɪteɪtɪŋ/

irritating

Meaning
causing annoyance, impatience, or mild anger
Example
The constant noise from the street is extremely irritating.
B1 noun /mæs/

mass

Meaning
a large body of matter with no specific shape; a large number of people or things
Example
A huge mass of people gathered in the square.
C1 verb /ˈskævɪndʒ/

scavenge

Meaning
to search through waste or discarded material to find useful items
Example
The children scavenged for food in the garbage dump.