refraction
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C2 noun /rɪˈfrækʃən/

refraction

Meaning
The bending of light, sound, or other waves when they pass from one medium to another of different density.
Example
The refraction of light in water makes objects appear bent.
C1 noun ˌpraɪ.vɪ.taɪˈzeɪ.ʃən

privatization

Meaning
The transfer of a business, industry, or service from public to private ownership and control.
Example
The privatization of state-owned companies increased efficiency.
C1 noun /ˈdɛdlɒk/

deadlock

Meaning
a situation in which progress is impossible because of disagreement
Example
Negotiations reached a deadlock after neither side agreed to compromise.
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 /pɪˈskætɔːrɪəl/

piscatorial

Meaning
relating to fishing or fishermen
Example
He has a deep knowledge of piscatorial techniques and fish species.
C1 noun /ˌpriːməˈnɪʃən/ or /ˌprɛm-/

premonition

Meaning
a strong feeling that something is about to happen, often something negative
Example
She had a premonition of danger before the trip.
C2 noun /ˈpaʊ.waʊ/

powwow

Meaning
an informal meeting or conference to discuss something
Example
The team held a quick powwow before the presentation.
B2 adjective /ˈles.ər/

Lesser

Meaning
smaller in amount; of lower importance; inferior
Example
He chose the lesser of two evils when making his decision.
B1 noun səˈplaɪ

supply

Meaning
A stock or amount of something supplied or available for use.
Example
Supply chains ensure resource availability.
B2 adjective /ˈlæstɪŋ/

Lasting

Meaning
enduring for a long time; permanent; durable
Example
Their friendship had a lasting impact on both their lives.
C2 adjective /ˈrɛɡnənt/

regnant

Meaning
Reigning; currently holding power, authority, or dominance.
Example
The regnant queen introduced several reforms during her reign.
B1 noun kəˈmɪt.mənt

commitment

Meaning
A promise or firm decision to do something; the state or quality of being dedicated to a cause or activity.
Example
The president reaffirmed his commitment to environmental protection.
C1 adjective /ˈbaɪtɪŋ/

Biting

Meaning
extremely cold; sharply critical or harsh
Example
The biting cold made everyone shiver.
A2 noun /ˌsɛlɪˈbreɪʃən/

celebration

Meaning
a festive event or activity to honor an occasion
Example
The city held a grand celebration on Independence Day.
B1 adverb /ʌnˈfɔːrtʃənətli/

Unfortunately

Meaning
used to express regret or disappointment about something
Example
Unfortunately, the weather was bad for our picnic.
B1 verb /hʊk/

hook

Meaning
to catch with a hook; to fasten
Example
He hooked the fish successfully.
A1 verb /ˈoʊpən/

open

Meaning
to move something so as to allow access; to begin
Example
Please open the door for me.
C2 noun /ɪˈfjuːʒən/

effusion

Meaning
An unrestrained outpouring of words, feelings, or emotions.
Example
His letter was an effusion of love and longing.
C1 noun ˈmaɪ.krəʊˌnjuː.tri.ənts

micronutrients

Meaning
Essential nutrients required by organisms in small quantities throughout life to orchestrate a range of physiological functions.
Example
Micronutrients are essential for cellular function.
C1 adjective /səkˈsɪŋkt/

succinct

Meaning
Briefly and clearly expressed; characterized by clear, precise expression in few words.
Example
His speech was succinct and impactful.
A2 noun /ˈreɪl.weɪ/

Railway

Meaning
a track made of steel rails along which trains run; a system of tracks with trains, stations, and other facilities
Example
The railway connects major cities across the country.
C1 adjective /ˈsʌl.ki/

Sulky

Meaning
bad-tempered and sullen; moody
Example
The child became sulky when he couldn't get his favorite toy.
C1 noun ˈvɜːmɪn

vermin

Meaning
Small harmful animals or insects that are difficult to control and carry disease.
Example
The house was infested with vermin, requiring immediate action.
A2 noun /prəˈfɛsər/

professor

Meaning
a senior teacher or academic at a college or university
Example
The professor explained the theory clearly.
C1 verb /ɪnˈsjuː/

ensue

Meaning
to happen as a result or consequence
Example
After the argument, silence ensued.
A1 noun /ɡeɪm/

game

Meaning
An activity or sport played for amusement, competition, or skill.
Example
They played a football game in the afternoon.
B1 noun /vəˈraɪəti/

Variety

Meaning
the quality of being different or diverse; a number of things of the same general class that are distinct in character or quality
Example
The restaurant offers a wide variety of international dishes.
B2 noun/verb /dɪˈspjuːt/

dispute

Meaning
a disagreement or argument about something important
Example
The two countries are in dispute over the border issue.
B1 noun /ˈɝːθ.kweɪk/

earthquake

Meaning
A sudden and violent shaking of the ground as a result of movements within the earth's crust.
Example
A powerful earthquake struck Japan last night.
C1 noun /ˈdɪsənˌtɛri/

dysentery

Meaning
An infection of the intestines resulting in severe diarrhea with blood and mucus.
Example
Many soldiers suffered from dysentery during the war.
B2 adjective; verb (past participle) /ˈɒkjʊpaɪd/

occupied

Meaning
being in use or taken; filled or lived in; controlled or held by force
Example
The room is occupied, so please wait outside.
C1 noun স্ক্রোলিং অ্যাডিকশন

scrolling addiction

Meaning
A compulsive need to continuously scroll through content on digital devices, particularly smartphones and social media platforms.
Example
Scrolling addiction is a growing concern among smartphone users.
B2 noun /ˈsaɪkloʊn/

cyclone

Meaning
a large-scale air mass that rotates around a strong center of low atmospheric pressure; a violent tropical storm
Example
The cyclone caused severe flooding along the coast.
A1 noun /naɪt/

night

Meaning
the time of darkness between one day and the next, when most people sleep
Example
She loves going for walks at night.
C1 adjective /ɪnˈsʌf.ər.ə.bəl/

insufferable

Meaning
Too extreme to bear; intolerable.
Example
The heat during the summer was insufferable.
A2 noun /kæʃ/

cash

Meaning
money in the form of bills or coins, not checks or credit
Example
She paid the bill in cash.
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.
C1 noun, adjective /ˈpɑːrtɪzən/

partisan

Meaning
A strong supporter of a party, cause, or person; showing biased allegiance.
Example
The debate quickly turned partisan, with each side defending their own agenda.
C2 noun /ɪnˈsɪpiəns/

incipience

Meaning
the beginning or initial stage of something
Example
The project was still in its incipience when funding was approved.
C2 adjective /ˈvɔːntɪd/

vaunted

Meaning
praised or boasted about, especially excessively
Example
The vaunted technology failed to deliver the expected results.
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 ˈsaɪəns ˈdezət

science-desert

Meaning
A region or area lacking in scientific development, research facilities, or educational institutions.
Example
J.C. Bose thrived in a science-desert.
A1 preposition, adverb /əˈlɔːŋ/

along

Meaning
moving in a constant direction on (a road, path, or surface)
Example
We walked along the river.
B1 noun /ˈmeɪkər/

maker

Meaning
a person or thing that makes or produces something
Example
He is a famous movie maker in Hollywood.
C2 verb /ˈproʊtjuːbəreɪt/

protuberate

Meaning
To swell out or bulge.
Example
The roots began to protuberate from the ground.
B2 noun /ɪmˈbærəsmənt/

embarrassment

Meaning
a feeling of self-consciousness, shame, or awkwardness
Example
Her face turned red with embarrassment after the mistake.
B2 adjective /ɪkˈskluːsɪv/

exclusive

Meaning
restricted to a particular person, group, or area; not shared with others
Example
The hotel offers exclusive access to a private beach.
A2 noun /ˌpɒsəˈbɪləti/

possibility

Meaning
something that may happen or be the case; a chance that something exists or might occur
Example
There is a strong possibility of rain tomorrow.
B1 verb /kæst/

cast

Meaning
to throw; to choose actors for a play; to shape metal
Example
The fisherman casts his line into the water.
C2 adjective /ˌæn.θrə.pəˈdʒen.ɪk/

anthropogenic

Meaning
Originating in human activity; caused by humans.
Example
Climate change is largely due to anthropogenic activities.
C1 noun ˈiːkəʊˌsɪstəm ˈsɜːvɪsɪz

ecosystem services

Meaning
The benefits people obtain from ecosystems.
Example
Forests provide valuable ecosystem services, such as purifying air and water.
C1 noun ˈnɛktər

Nectar

Meaning
A sweet liquid produced by flowers that serves as food for butterflies.
Example
Butterflies drink nectar from flowers.
C1 noun prɪˈzɜː.və.tɪvz

preservatives

Meaning
A substance used to preserve foodstuffs, wood, or other materials against decay.
Example
Many processed foods contain harmful preservatives.
B2 adverb /ˈwɪl.ɪŋ.li/

Willingly

Meaning
in a willing manner; voluntarily; with free will
Example
She willingly helped her neighbors during the emergency.
B1 adjective /ˌækəˈdɛmɪk/

academic

Meaning
related to education, learning, or scholarly activities
Example
She has an outstanding academic record.
C2 adjective /ˌʌnəˈsweɪdʒd/

unassuaged

Meaning
Not made less intense or relieved; unrelieved.
Example
His grief remained unassuaged despite the passage of time.
C2 adjective /ˈrɛd.ələnt/

redolent

Meaning
having a strong pleasant smell; strongly reminiscent or suggestive of something
Example
The kitchen was redolent of spices and fresh herbs.
B2 adjective /ˈfʌŋkʃənl/

functional

Meaning
designed to be practical and useful, rather than just decorative
Example
The design of the chair is simple but highly functional.
C1 noun /ˈsɔː.dʌst/

sawdust

Meaning
The tiny particles of wood produced by sawing or sanding.
Example
The floor was covered with sawdust from the carpentry work.
C1 adjective/verb /ˈwɒrəntɪd/

warranted

Meaning
Justified or authorized under the circumstances.
Example
Her anger was warranted after the unfair treatment.
B1 noun /ˈeə.rə.pleɪn/

Aeroplane

Meaning
a powered flying vehicle with fixed wings and a weight greater than that of the air it displaces
Example
The aeroplane took off smoothly from the airport runway.
B2 noun ˌɪn.fləˈmeɪ.ʃən

inflammation

Meaning
A localized physical condition in which part of the body becomes reddened, swollen, hot, and often painful.
Example
Chronic inflammation can lead to severe diseases.
A2 noun /ˈprɪn.ses/

princess

Meaning
a female royal family member, especially the daughter of a king or queen; a woman regarded as noble, cherished, or elegant
Example
The princess waved to the crowd from the palace balcony.
A2 noun /peɪn/

Pain

Meaning
physical suffering or discomfort; mental or emotional distress
Example
The patient felt severe pain in his back.
C1 adjective /ˈtɛn.ju.əs/

tenuous

Meaning
Very weak, thin, or slight; lacking a strong basis.
Example
The evidence against him is quite tenuous.
C2 verb /ˈpɛkjʊˌleɪt/

peculate

Meaning
To embezzle or steal money, especially public funds.
Example
The corrupt official was found guilty of peculating government funds.
A2 noun /sɔːs/

Sauce

Meaning
a liquid or semi-liquid substance served with food to add moisture and flavor
Example
She added tomato sauce to her pasta.
B2 adjective məˈriːn

marine

Meaning
Of, relating to, or characteristic of the sea; living or growing in the sea.
Example
Marine ecosystems are highly sensitive to human activity.
B1 adjective /ˈtwɛntiəθ/

twentieth

Meaning
coming after the nineteenth in order; being one of twenty equal parts.
Example
She was born on the twentieth of April.
B2 noun /ˈfɔːr.kæst/

Forecast

Meaning
a prediction or estimate of future events, especially coming weather conditions
Example
The weather forecast predicted heavy rain for the entire weekend.
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 noun, adjective /ˈɡɒsəmər/

gossamer

Meaning
Something light, thin, and delicate, like a fine fabric or cobweb.
Example
The bride's veil was made of delicate gossamer fabric.
B2 adjective /ˌhɒrɪˈzɒntəl/

horizontal

Meaning
parallel to the horizon; flat and level from side to side
Example
The table must be perfectly horizontal to keep the glass from sliding.
B1 verb /baʊns/

bounce

Meaning
to spring back after hitting something; to rebound.
Example
The ball bounced off the wall and hit the window.
A2 noun /siːt/

seat

Meaning
a place to sit, especially a chair or other place for sitting
Example
I reserved a seat for you at the concert.
A2 noun /ˈfɑː.loʊ.ɪŋ/

following

Meaning
a group of supporters or people who admire something or someone
Example
The singer has a large following around the world.
C1 adjective /ˈpaɪ.əs/

Pious

Meaning
devoutly religious; showing reverence for God
Example
The pious monk spent hours in prayer every day.
C2 noun /ˌɑːrbəˈriːtəm/

arboretum

Meaning
a place where trees, shrubs, and plants are grown for scientific study or public display
Example
We visited the city’s arboretum to learn about exotic trees.
B2 adjective /ˈfɜːr.taɪl/

Fertile

Meaning
capable of producing abundant vegetation or crops; able to conceive children
Example
The fertile soil in this region makes it perfect for growing vegetables.
C2 adjective /ˈbrɔːni/

brawny

Meaning
Physically strong and muscular.
Example
The brawny man lifted the heavy box with ease.
A1 preposition /ɒn/

on

Meaning
physically in contact with and supported by a surface
Example
The book is on the table.
A2 noun /kɔːrs/

course

Meaning
a direction, path, or a set of educational lessons
Example
She enrolled in a computer science course.
B2 verb /ˈkærəktəraɪz/

characterize

Meaning
to describe or portray the distinctive features or qualities of someone or something
Example
The author characterizes the hero as brave and selfless.
A2 noun /ˈnoʊ.tɪs/

Notice

Meaning
attention to something; a written or printed announcement
Example
The notice on the board announced the school closure.
C2 noun /ˈsoʊbrɪˌkeɪ/

sobriquet

Meaning
a person's nickname or descriptive name
Example
The famous leader was known by the sobriquet 'The Iron Lady'.
C2 noun /ˈæl.ɪ.mənt/

aliment

Meaning
food or nourishment that sustains life
Example
Fruits and vegetables are important aliments for a healthy body.
B2 noun ডিজিটাল ডিটক্স

digital detox

Meaning
A period of time during which a person refrains from using electronic devices such as smartphones or computers, regarded as an opportunity to reduce stress or focus on social interaction in the physical world.
Example
A digital detox can help reduce hand fatigue.
C1 noun /ˌmiːtiəˈrɒlədʒi/

meteorology

Meaning
The scientific study of the atmosphere and weather.
Example
He chose to specialize in meteorology to study weather patterns.
C1 adverb /əˈtroʊʃəsli/

atrociously

Meaning
in a very cruel, shocking, or extremely bad manner
Example
The service at the restaurant was atrociously slow.
A1 number /ˈfɔːrti/

forty

Meaning
the number 40; ten times four
Example
She celebrated her forty years of life with a big party.
B1 adjective /ˈpɜːrmənənt/

Permanent

Meaning
lasting; unchanging; enduring
Example
The tattoo is a permanent mark on his skin.
B2 noun /prɪˈtens/

Pretence

Meaning
an attempt to make something that is not the case appear true
Example
He made no pretence of being interested in the conversation.
A1 adverb /nɪər/

Near

Meaning
close in space or time; almost
Example
The school is very near to my house.
C2 noun /əˈkriːʃən/

accretion

Meaning
The process of growth or increase, typically by the gradual accumulation of additional layers or matter.
Example
The accretion of wealth allowed him to invest in various projects.
C2 adjective /kəˈmɛnʃərət/

commensurate

Meaning
corresponding in size, degree, or extent; proportionate
Example
Salary will be commensurate with experience.
C1 adjective /ˈtʃɛk.ərd/

checkered

Meaning
Having a pattern of alternating squares of different colors; also describing a past full of ups and downs or varied experiences.
Example
He had a checkered career with many highs and lows.
A2 noun /ɡlʌvz/

Gloves

Meaning
coverings for the hands with separate parts for each finger
Example
She wore warm gloves to protect her hands from the cold.
B1 adjective /ˈkɒn.fɪ.dənt/

Confident

Meaning
self-assured; certain; having belief in one's abilities
Example
She felt confident about her performance in the exam.
C2 noun /ˈkæn.toʊ/

canto

Meaning
A main division of a long poem, especially in epic poetry.
Example
The Divine Comedy is divided into several cantos.
C2 verb /ˌdɪskəˈmoʊd/

discommode

Meaning
To cause inconvenience or trouble to someone.
Example
I hope my request does not discommode you.
B2 adjective /stɜːrn/

Stern

Meaning
serious and demanding exact conformity to rules; strict and severe
Example
The teacher gave the students a stern warning about cheating.
B1 adjective kəˈmɜː.ʃəl

commercial

Meaning
Concerned with or engaged in commerce; having profit as a primary aim rather than artistic or other value.
Example
Commercial hubs attract investments.
B1 adverb /ˈtɛmpərɛrɪli/

temporarily

Meaning
for a limited time; not permanently
Example
The road is closed temporarily for repairs.
A2 noun /ˈiː.ɡəl/

Eagle

Meaning
large bird of prey with powerful wings and sharp talons
Example
The eagle soared high above the mountains.
C1 adjective /ˈkɔːrdiəl/

Cordial

Meaning
warmly friendly; sincere; heartfelt
Example
She gave us a cordial welcome at the front door.
B2 verb /liːp/

leap

Meaning
to jump high or far; to move quickly with large steps
Example
The cat leaped onto the table.
A2 noun /fɪər/

Fear

Meaning
an unpleasant emotion caused by the belief that someone or something is dangerous
Example
She overcame her fear of heights by taking rock climbing lessons.
A2 noun /ruːf/

roof

Meaning
the top covering of a building or vehicle
Example
The roof of the house needs to be repaired.
B1 noun trend

trend

Meaning
A general direction in which something is developing or changing; a pattern or tendency.
Example
The current trend of deforestation is alarming.
B1 noun /trəˈdɪʃ.ən/

Tradition

Meaning
the transmission of customs or beliefs from generation to generation; a long-established custom or belief
Example
It's a family tradition to gather for dinner every Sunday evening.
C2 noun /ˌɡrɛnəˈdɪə/

grenadier

Meaning
A soldier who specialized in throwing grenades; later used to describe an elite infantryman.
Example
The grenadier stood proudly at the front of the regiment.
C2 verb /ɪkˈspɒstjʊleɪt/

expostulate

Meaning
to express strong disapproval or disagreement
Example
She expostulated with her friend about the risky decision.
A2 adjective /loʊ/

low

Meaning
Small in amount, degree, or position; not high.
Example
The river is at its lowest level in years.
C2 noun /ˈlɑːrdər/

larder

Meaning
A place, such as a pantry, where food is stored.
Example
The larder was full of fresh bread and cheese.
B1 noun /ˈær.əb/

arab

Meaning
a person belonging to the Semitic people of the Middle East and North Africa
Example
He is an Arab living in Dubai.
C1 adverb /maɪˈnjuːtli/

Minutely

Meaning
in very small detail; extremely carefully
Example
The detective examined the evidence minutely.
C2 verb /ˈæpɪtaɪz/

appetize

Meaning
to stimulate the appetite; to make someone eager or interested
Example
The aroma of fresh bread will appetize the guests before dinner.
A2 adjective /ˈɔːfəl/

awful

Meaning
very bad or unpleasant
Example
The weather was awful during our trip.
B2 noun ট্রপিক্যাল রিজিওনস

tropical regions

Meaning
Areas of the Earth near the equator characterized by warm temperatures.
Example
Bangladesh is located in tropical regions.
B2 noun /ˈtiːmmeɪt/

teammate

Meaning
a member of the same team
Example
He congratulated his teammate after scoring the goal.
B2 noun/verb /ˈsæd.əl/

saddle

Meaning
A seat fastened on the back of a horse for riding; to burden someone with a responsibility.
Example
He saddled the horse before going for a ride.