theoretical
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B2 adjective /ˌθiːəˈrɛtɪkl/

theoretical

Meaning
Concerned with or based on theory rather than practical application.
Example
The idea remains largely theoretical without real-world evidence.
B2 adjective /væst/

Vast

Meaning
extremely large in size, amount, or extent; immense
Example
The vast ocean stretched endlessly to the horizon.
B2 noun /vaɪˈbreɪ.ʃən/

Vibration

Meaning
a rapid back and forth movement; oscillation
Example
The phone's vibration woke me up.
B2 adjective /ˈhez.ɪ.tənt/

Hesitant

Meaning
uncertain or unwilling to act; showing doubt or reluctance
Example
She was hesitant to accept the job offer.
B2 noun/verb /stʌmp/

stump

Meaning
the base of a tree left after the trunk is cut down; to puzzle or confuse
Example
The question completely stumped the students.
B2 adjective /kənˈvɪnsɪŋ/

Convincing

Meaning
believable; credible; persuasive; able to make someone believe something
Example
His convincing argument won over the entire jury.
B2 noun /ˈsnoʊ.fɔːl/

Snowfall

Meaning
the process of snow falling from the sky; the amount of snow that falls
Example
The heavy snowfall blocked all the roads yesterday.
B2 verb /rɪˈzɪst/

resist

Meaning
to oppose or fight against; to withstand
Example
He could not resist the temptation.
B2 noun /ɪnˈsaɪdə/

insider

Meaning
a person within a group or organization who has access to confidential information
Example
He was an insider who knew all the company's secrets.
B2 verb /ˈvaɪəleɪt/

violate

Meaning
to break or go against a rule or law; to disrespect
Example
Parking here violates the city regulations.
B2 adjective /ˈtʃær.ɪ.tə.bəl/

Charitable

Meaning
generous in giving to those in need; showing kindness
Example
She is known for her charitable work in the community.
B2 noun speɪs ɪksplɔːˈreɪʃən

space exploration

Meaning
The investigation of outer space by means of manned and unmanned spacecraft.
Example
Space exploration has expanded our knowledge of the universe.
B2 adjective /ˌpoʊstˈwɔːr/

post-war

Meaning
relating to the period after a war has ended
Example
The country experienced rapid economic growth in the post-war years.
B2 noun /streɪn/

Strain

Meaning
pressure or tension; excessive demand on strength or resources
Example
Working long hours put a strain on his health.
B2 verb /əˈbɒlɪʃ/

abolish

Meaning
to formally end or stop something; to cancel or eliminate completely
Example
The government decided to abolish the old tax system.
B2 adjective /əˈvɔɪdəbl/

avoidable

Meaning
able to be prevented or avoided
Example
Most of the damage was avoidable with proper planning.
B2 noun /ˈkæp.tɪv/

Captive

Meaning
a person who has been taken prisoner or an animal that has been confined
Example
The captive was held in a small cell for several months.
B2 noun ˈvaɪtəl rɪˈsɔːrsɪz

vital resources

Meaning
Essential assets or supplies that are crucial for survival and development.
Example
Water is one of Bangladesh's vital resources.
B2 noun /ˈtroʊfi/

trophy

Meaning
An object awarded as a prize for a victory or achievement.
Example
She proudly displayed the trophy she won in the competition.
B2 noun /ˈpeɪtrən/

patron

Meaning
a person who gives financial or other support to a person, organization, or cause
Example
The library is supported by generous patrons.
B2 verb /lɪk/

lick

Meaning
to pass the tongue over something; to defeat decisively
Example
The cat licked its paws clean.
B2 verb /ˈɛmɪˌɡreɪt/

emigrate

Meaning
To leave one's own country in order to settle permanently in another.
Example
Many people emigrated from Europe to America in the 19th century.
B2 adjective /əˈpiː.lɪŋ/

Appealing

Meaning
attractive; interesting; pleasing
Example
The colorful garden looks very appealing to visitors.
B2 verb /ˌʌndərˈskɔːr/

underscore

Meaning
to emphasize or highlight something
Example
The incident underscored the need for better safety measures.
B2 noun ˈmʌltiˌtɑːskɪŋ

multitasking

Meaning
The performance of more than one task at the same time
Example
Multitasking reduces efficiency.
B2 adjective/noun ˌdem.əˈɡræf.ɪk

demographic

Meaning
Relating to the structure of populations; statistical data relating to the population and particular groups within it.
Example
The company analyzes demographic trends before launching a product.
B2 adjective /ˈtʃuː.zi/

Choosey/Choosy

Meaning
very careful in choosing; selective; particular about what one likes or accepts
Example
He's very choosy about the restaurants where he eats.
B2 noun /oʊˈbiː.di.əns/

Obedience

Meaning
compliance with an order, request, or law; submission to authority
Example
Children should show obedience to their parents.
B2 verb /əˈkweɪnt/

acquaint

Meaning
to make someone familiar with something; to inform or introduce
Example
Please acquaint yourself with the safety guidelines before operating the machine.
B2 verb /ˈɪr.ɪ.teɪt/

irritate

Meaning
To make someone annoyed or angry; to cause discomfort or inflammation.
Example
Rubbing your eyes can irritate them.
B2 noun /bɪˈtreɪəl/

Betrayal

Meaning
the action of betraying one's country, group, or person; disloyalty
Example
His betrayal of their friendship hurt her deeply.
B2 noun /ˈkæp.sɪ.kəm/

Capsicum

Meaning
sweet pepper; bell pepper; colorful vegetable used in cooking
Example
Add red and green capsicum to make the dish colorful and nutritious.
B2 noun/verb /ˈoʊvərˌdoʊs/

overdose

Meaning
An excessive and dangerous amount of a drug; to take too much of a substance.
Example
He was rushed to the hospital after a drug overdose.
B2 adjective /ˌɔːɡənaɪˈzeɪʃənəl/

organizational

Meaning
relating to the structure or arrangement of a company or group
Example
He works on improving the organizational structure of the company.
B2 adjective /lɑːrdʒ skeɪl/

large-scale

Meaning
involving a large number or quantity, or covering a large area
Example
The company is planning a large-scale expansion into international markets.
B2 adjective /ˈdʒʌm.boʊ/

Jumbo

Meaning
exceptionally large; enormous; gigantic
Example
The jumbo jet was delayed at the airport.
B2 noun /ˈker.ə.siːn/

Kerosene

Meaning
a combustible hydrocarbon liquid widely used as a fuel in lamps and heating systems
Example
The old lamp burned kerosene to provide light during power outages.
B2 verb, noun /kəˈmjuːt/

commute

Meaning
Verb: to travel regularly between home and work; Noun: the journey to and from work.
Example
He commutes two hours every day to reach his office.
B2 verb /ˈɒkjʊpaɪ/

occupy

Meaning
to take up space or time; to live or work in a place
Example
The new family will occupy the house next month.
B2 adjective /ˈɪn.tɪ.mət/

Intimate

Meaning
close in friendship; private and personal; detailed knowledge
Example
They have an intimate friendship that has lasted for decades.
B2 noun /ˈruːmər/

Rumour

Meaning
a currently circulating story or report of uncertain or doubtful truth; gossip
Example
There's a rumour that the company will close next month.
B2 adjective /ˈwɜːldli/

worldly

Meaning
Concerned with material values or ordinary life rather than spiritual matters.
Example
He was more interested in worldly success than in spiritual growth.
B2 verb /dɪˈtætʃ/

detach

Meaning
to separate or remove something from something else
Example
She detached the page from the notebook.
B2 adverb /ˈmæn.ju.ə.li/

Manually

Meaning
by hand; using physical effort rather than machines
Example
The data was entered manually into the system.
B2 noun /ˌkovuːɪɡˈzɪs.təns/

Co-existence

Meaning
the state of existing together at the same time or in the same place; peaceful cohabitation
Example
The peaceful co-existence of different cultures makes this city unique.
B2 noun /ˈsiː.krə.si/

Secrecy

Meaning
the practice of keeping something secret; the state of being kept hidden
Example
The project was conducted in complete secrecy.
B2 adjective /ˈfjʊə.ri.əs/

Furious

Meaning
extremely angry; violent; fierce;
Example
She was furious when she discovered the mistake.
B2 verb /ˈstrʌɡlɪŋ/

struggling

Meaning
Making forceful or violent efforts to get free of restraint or constriction; having difficulty achieving something.
Example
Many regions are struggling with economic recovery.
B2 verb /liːp/

leap

Meaning
to jump high or far; to move quickly with large steps
Example
The cat leaped onto the table.
B2 adjective /ˈɡlæm.ər.əs/

Glamorous

Meaning
having glamour; attractive in an exciting way; fashionable;
Example
The actress looked glamorous in her designer gown at the awards ceremony.
B2 adjective ˌɒp.ərˈeɪ.ʃən.əl

operational

Meaning
In working order; ready for use.
Example
The space project will be operational by 2025.
B2 verb /ɪmˈbɑːrk/

embark

Meaning
to begin a journey, project, or activity
Example
She decided to embark on a new career in medicine.
B2 noun /dɪˈpləʊməsi/

diplomacy

Meaning
The profession, activity, or skill of managing international relations or handling affairs tactfully.
Example
Effective diplomacy helped avoid the conflict.
B2 verb /kəmˈpaɪl/

compile

Meaning
to collect information or material and put it together in a list, report, or book
Example
She compiled the research data into a detailed report.
B2 noun /skoʊp/

scope

Meaning
the range of one's perception, understanding, or activity
Example
The project is beyond the scope of our resources.
B2 noun /ˈspɛʃəlti/

specialty

Meaning
a particular area of study, work, or interest; something in which a person or place excels
Example
Her specialty is pediatric medicine.
B2 adjective /ˈkrɛd.ɪ.bəl/

credible

Meaning
able to be believed; convincing
Example
Her explanation was credible enough to convince the committee.
B2 verb /stæk/

stack

Meaning
to arrange things in a neat pile or one on top of another
Example
He stacked the books neatly on the shelf.
B2 noun /ˈsen.tɪ.piːd/

Centipede

Meaning
a long thin creature with many legs that lives in dark places
Example
I found a centipede crawling under the rock.
B2 noun /ˌaʊtˈsaɪdə(r)/

outsider

Meaning
a person who is not accepted as a member of a particular group or community
Example
As a new student, she often felt like an outsider at school.
B2 adjective /ˈpæsɪv/

passive

Meaning
not actively responding or participating; in grammar, denoting the voice in which the subject undergoes the action
Example
Instead of taking charge, he remained passive during the meeting.
B2 noun /ˈɪntərvəl/

interval

Meaning
a period of time between two events or points; a pause or break in activity
Example
There was a short interval between the two performances.
B2 noun /ˈɑːftərmɑːθ/

aftermath

Meaning
the consequences or aftereffects of an event or situation, especially a disastrous one
Example
The aftermath of the earthquake was devastating.
B2 noun /ˈbrɛkdaʊn/

breakdown

Meaning
a failure or collapse of a system or machinery
Example
The car had a breakdown on the highway.
B2 verb /saɪ/

sigh

Meaning
to let out a long, deep breath as an expression of tiredness, relief, or sadness
Example
She sighed with relief when she heard the good news.
B2 noun /ˌɪnəˈbɪləti/

inability

Meaning
the state of being unable to do something
Example
His inability to make decisions affected his career.
B2 adjective /ˌʌnrɪˈzɒlvd/

unresolved

Meaning
not solved or settled; remaining undecided or unclear
Example
The dispute remains unresolved despite several meetings.
B2 noun /ˌref.jʊˈdʒiː/

Refugee

Meaning
a person who has been forced to leave their country in order to escape war, persecution, or natural disaster
Example
The refugee camp provided temporary shelter for thousands of displaced families.
B2 verb /ˌriːəˈreɪndʒ/

rearrange

Meaning
to change the order or position of something
Example
She decided to rearrange the furniture in her living room.
B2 verb /rɪˈzɛmbəl/

resemble

Meaning
to look like or be similar to something or someone
Example
She resembles her mother in both appearance and mannerisms.
B2 verb ˈstɪmjəleɪt

stimulate

Meaning
To encourage or promote the development or growth of something
Example
Proper sunlight stimulates plant growth.
B2 noun ˈkrɪp.toʊˌkɝː.ən.si

cryptocurrency

Meaning
Decentralized digital currency operated using blockchain technology.
Example
Bitcoin is the most popular cryptocurrency in the market.
B2 noun/verb /ɡʌt/

gut

Meaning
The stomach or belly; also used for courage, instinct, or to remove the inside of something.
Example
He had the guts to stand up for his beliefs.
B2 noun/verb jiːldz

yields

Meaning
The amount of agricultural produce harvested per unit of land area.
Example
Crop yields have declined due to extreme weather.
B2 noun /ˈkɪdni/

Kidney

Meaning
either of a pair of organs that filter waste products from the blood and produce urine
Example
Drinking plenty of water helps keep your kidneys healthy.
B2 adjective /ˌsuː.pəˈnætʃ.ər.əl/

Supernatural

Meaning
relating to things that cannot be explained by natural or scientific laws; beyond the normal or physical world
Example
The old house was said to have supernatural powers.
B2 adjective /ɪkˈsɛntrɪk/

eccentric

Meaning
unconventional and slightly strange in behavior or appearance
Example
The artist was known for his eccentric style.
B2 noun /ɪnˈventər/

inventor

Meaning
a person who creates or designs something new, especially a device, method, or process
Example
The inventor patented her new medical device.
B2 adjective /ˈvɛərid/

Varied

Meaning
showing differences; diverse; containing different types
Example
The museum has a varied collection of ancient artifacts.
B2 noun ˈtrɪbjuːt

tribute

Meaning
An act, statement, or gift that is intended to show gratitude, respect, or admiration.
Example
They paid tribute to the brave freedom fighters.
B2 noun /ˈher ˌpɪn/

Hair pin

Meaning
a thin piece of metal or plastic used to hold hair in place
Example
She used several hair pins to secure her elegant updo.
B2 noun ˈbluː.prɪnt

blueprint

Meaning
A detailed plan or framework for a work or project, a pre-planned structure.
Example
The architect presented a blueprint for the new building.
B2 noun /ˈboʊlər/

bowler

Meaning
a person who delivers the ball in cricket; also a type of hard felt hat with a rounded crown
Example
The bowler took three wickets in the first over.
B2 verb /ɪnˈfɛkt/

infect

Meaning
To contaminate with a disease-causing organism.
Example
The virus can infect healthy people quickly.
B2 noun ˈskruːtɪni

scrutiny

Meaning
Critical observation or examination
Example
The new law is under scrutiny by the legislative body.
B2 verb /daɪ/

dye

Meaning
to change the color of something using a chemical substance
Example
She will dye her hair blonde tomorrow.
B2 adjective /ˌkɒn.fɪˈden.ʃəl/

Confidential

Meaning
secret; private; intended to be kept secret
Example
Please keep this information confidential.
B2 adjective, adverb /ˈneɪʃənˌwaɪd/

nationwide

Meaning
existing or happening throughout an entire nation
Example
The campaign received nationwide support.
B2 adjective /ˈsɜːrkjələr/

circular

Meaning
shaped like a circle; round in form
Example
The kids sat in a circular arrangement around the campfire.
B2 verb /ˈspɛkjʊˌleɪt/

speculate

Meaning
To form a theory or guess without firm evidence; to invest in stocks, property, etc. hoping for profit.
Example
Experts speculate that the company may expand into new markets.
B2 noun /ˌkoʊəˈlɪʃən/

coalition

Meaning
a temporary alliance of distinct parties, persons, or states for joint action
Example
Several parties formed a coalition to pass the new law.
B2 adjective /ɪˈmɒrəl/

immoral

Meaning
Not conforming to accepted standards of morality; unethical or wicked.
Example
He was fired for his immoral behavior.
B2 noun ˌkætəˈstrɒfɪk ɪˈvents

catastrophic events

Meaning
Extremely destructive or damaging events that cause widespread devastation.
Example
Cyclones are catastrophic events in Bangladesh.
B2 adjective /ˈtiːdiəs/

Tedious

Meaning
tiresome because of length or dullness; boring and monotonous
Example
The lecture was so tedious that many students fell asleep.
B2 adjective /ˈpɒlɪʃt/

polished

Meaning
refined, sophisticated, and elegant in appearance or behavior
Example
She gave a polished performance at the recital.
B2 noun /ˈlænd.leɪ.di/

Landlady

Meaning
a woman who rents out land, a building, or accommodation; a female property owner
Example
The friendly landlady provided fresh towels and showed us around the apartment.
B2 adverb /ˈpʌŋk.tʃu.əl.i/

Punctually

Meaning
at the exact time arranged; on time; not late
Example
She always arrives punctually for meetings.
B2 verb /ˌdɪsəˈpruːv/

disapprove

Meaning
to have a negative opinion about something; to consider something wrong or bad
Example
Many parents disapprove of smoking.
B2 verb /səˈrɛndər/

surrender

Meaning
to give up or yield to an opponent or authority
Example
The army finally surrendered after weeks of fighting.
B2 noun /ˈkæs.ər.oʊl bɑːks/

Casserole box

Meaning
a covered dish used for cooking and serving food, especially baked dishes
Example
The casserole box kept the food warm during the dinner party.
B2 verb /fɔːrˈsiː/

foresee

Meaning
To be aware of beforehand; to predict or expect.
Example
She could foresee the challenges ahead.
B2 noun, verb /kɜːrs/

curse

Meaning
a solemn wish that harm or misfortune should befall someone; a rude or offensive word or phrase; to utter offensive words or wish harm upon someone
Example
He cursed loudly when he realized he had lost his wallet.
B2 noun /ˈnæp.kɪn/

Nap Kin

Meaning
a piece of cloth or paper used for wiping the mouth and hands while eating
Example
She placed the napkin on her lap before starting dinner.
B2 noun /ˈpɑː.tɪ.klz/

particles

Meaning
Minute portions of matter.
Example
PM2.5 particles harm respiratory health.
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.
B2 noun /ˈkæt fɪʃ/

Cat fish

Meaning
a freshwater fish with whisker-like barbels around the mouth, commonly found in ponds and rivers
Example
Catfish is often fried and served with rice in Bengali cuisine.
B2 noun ˈsɛv.ən ˈwʌn.dərz

Seven Wonders

Meaning
The seven most remarkable and famous structures in the world, representing architectural feats and cultural significance.
Example
The Seven Wonders of the world reflect human brilliance.
B2 verb /swer/

swear

Meaning
to use offensive language; to promise solemnly; to take an oath
Example
I swear to tell the truth.
B2 adverb /ˈfɜ:rmli/

Firmly

Meaning
in a strong, steady, and unwavering manner
Example
She firmly believed in her decision.
B2 adjective /ˈrek.ləs/

Reckless

Meaning
acting without thinking about consequences; careless; dangerous;
Example
His reckless driving caused a serious accident.
B2 noun /əˈlaɪnmənt/

alignment

Meaning
arrangement in a straight line or in proper position
Example
The alignment of the planets was perfect for the celestial event.
B2 verb /rɪˈfreɪn/

refrain

Meaning
To hold oneself back from doing something.
Example
Please refrain from smoking in this area.
B2 noun /ˌkwes.tʃəˈneər/

questionnaire

Meaning
a set of written questions used to collect information or opinions
Example
Participants filled out a detailed questionnaire about their habits.
B2 noun /bleɪd/

Blade

Meaning
a sharp flat cutting edge of a knife, sword, or tool
Example
The blade of the knife needs to be sharpened.
B2 adjective /ˈpeɪ.ə.bəl/

Payable

Meaning
required to be paid; owed as a debt
Example
The amount is payable within thirty days of the invoice date.
B2 noun /truːp/

Troop

Meaning
a group of soldiers; military personnel organized as a unit
Example
The troop marched in formation across the parade ground.
B2 adjective ˈræd.ɪ.kəl

radical

Meaning
Capable of bringing fundamental changes opposite to conventional beliefs or systems.
Example
The leader proposed radical economic reforms.
B2 noun /səˈraʊn.dɪŋz/

surroundings

Meaning
The area around a person, place, or thing.
Example
She quickly adapted to her new surroundings.
B2 noun /ˌɔːltəˈreɪʃən/

alteration

Meaning
a change or modification made to something
Example
The tailor made an alteration to the suit.
B2 adjective ˌpriːhɪˈstɒrɪk

prehistoric

Meaning
Belonging to the time before written records.
Example
The prehistoric era was marked by the rise of early humans.
B2 noun /əˌveɪləˈbɪləti/

availability

Meaning
the state of being able to be used or obtained
Example
The availability of clean water is crucial for health.