acid rain
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B2 noun ˈæsɪd reɪn

acid rain

Meaning
Rainfall made acidic by atmospheric pollution, especially from industrial emissions.
Example
Acid rain damages crops and buildings.
C2 adjective /ɔːˈɡʌst/

august

Meaning
Respected and impressive; inspiring reverence or admiration.
Example
The king entered the hall with an august presence.
B2 adjective /ˌæksɪˈdɛntl/

accidental

Meaning
happening by chance, unintentionally
Example
The fire was caused by an accidental spark.
C1 noun /əˈdʒɪl.ɪ.ti/

agility

Meaning
Ability to work quickly and easily, both physically and mentally.
Example
Mental agility is essential for problem-solving.
C2 verb /əˈreɪn/

arraign

Meaning
to formally accuse someone in a court of law and ask them to respond to the charges
Example
The suspect was arraigned before the judge this morning.
B2 noun /ˈɑː.mənd/

Almond

Meaning
edible seed of the almond tree
Example
Almonds are a healthy snack rich in protein and good fats.
C1 verb /əˈdʒɔɪn/

adjoin

Meaning
To be next to and joined with something.
Example
Their house adjoins the park.
C1 verb /ədˈmɒnɪʃ/

admonish

Meaning
to warn or reprimand someone firmly; to advise or urge earnestly
Example
The teacher admonished the students for being late.
C2 noun /ˌæs.əˈfet.ɪ.də/

Asafoetida

Meaning
a pungent spice derived from the resin of a plant, commonly used in Indian cooking
Example
A pinch of asafoetida adds a distinctive flavor to the lentil curry.
B2 noun /æmˈfɪbiən/

amphibian

Meaning
A cold-blooded vertebrate animal that can live both on land and in water.
Example
A frog is a common amphibian that lives both in water and on land.
C2 verb /əbˈhɔːr/

abhor

Meaning
to regard with disgust and hatred
Example
She abhors cruelty to animals.
B1 adjective /ˈæŋk.ʃəs/

Anxious

Meaning
feeling worried or nervous; eager with concern
Example
She felt anxious about her upcoming job interview.
C1 noun, verb /ˈɔːtɒpsi/

autopsy

Meaning
a post-mortem examination to discover the cause of death or the extent of disease
Example
The autopsy revealed that the victim had died from poisoning.
B1 adjective /ˈæn.ju.əl/

annual

Meaning
happening once every year
Example
The company holds an annual meeting for all its shareholders.
B2 verb /əˈteɪn/

attain

Meaning
to achieve or reach something
Example
She worked hard to attain her goals.
B1 noun /aɪl/

aisle

Meaning
a passage between rows of seats or shelves
Example
She walked down the aisle to find her seat.
C1 adjective /əˈbaɪdɪŋ/

abiding

Meaning
lasting for a long time; enduring
Example
She had an abiding love for her hometown.
C2 verb /ˈæntɪdeɪtɪd/

antedated

Meaning
assigned to an earlier date than the actual one; happened earlier
Example
The letter was antedated to appear more official.
C2 adverb /əˈbɛd/

abed

Meaning
in bed
Example
She stayed abed all day due to illness.
A2 verb /əˈtrækt/

attract

Meaning
to cause someone to have interest or draw something towards
Example
The flowers attract bees with their bright colors.
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.
C2 verb /əˈɡriːv/

aggrieve

Meaning
to cause distress or make someone feel resentful
Example
She felt aggrieved by the unfair decision.
C1 verb /ˈæɡənaɪz/

agonize

Meaning
To suffer extreme physical or mental pain; to spend time worrying.
Example
She agonized for days over whether she had made the right decision.
A2 noun /ˈæθliːt/

athlete

Meaning
a person who is trained or skilled in physical exercises, sports, or games requiring strength, agility, or stamina
Example
The athlete trained hard for the upcoming Olympic Games.
C2 noun /ˈɔːlmənæk/

almanac

Meaning
An annual publication containing calendars, weather forecasts, astronomical data, and other useful information.
Example
He consulted the almanac to check the phases of the moon.
B2 noun ˌæn.tiˈɒk.sɪ.dənt

antioxidant

Meaning
A substance that may prevent or delay some types of cell damage by neutralizing free radicals.
Example
Green tea contains powerful antioxidants that slow aging.
A2 adverb /əˈkrɒs/

Across

Meaning
from one side to the other side of something; in every part of a place
Example
The bridge stretches across the river.
C1 verb /ˈæbdɪkeɪt/

abdicate

Meaning
To give up a position of power or responsibility, especially a throne.
Example
The king decided to abdicate the throne.
C2 adjective /əˈluːviəl/

alluvial

Meaning
Relating to or derived from alluvium (loose soil or sediment deposited by rivers).
Example
The farmers cultivate crops on the fertile alluvial plains.
B2 verb /əˈveɪl/

avail

Meaning
to make use of something; to be of use or benefit
Example
You should avail yourself of this opportunity.
C2 noun /əˌbɑː.məˈneɪ.ʃən/

abomination

Meaning
a thing that causes disgust or hatred
Example
Slavery was considered an abomination.
B2 adjective /əˈfektɪd/

Affected

Meaning
influenced; impacted; touched by something
Example
The flood-affected areas need immediate assistance.
B1 noun /əˌkɒm.əˈdeɪ.ʃənz/

accommodations

Meaning
Lodging; room and board; places to stay.
Example
The students had proper accommodations.
C2 noun /ˌæv.oʊˈkeɪ.ʃən/

avocation

Meaning
a hobby or minor occupation pursued in addition to one's main work
Example
Painting is his avocation after office hours.
C2 noun /ˈæpədʒiː/

apogee

Meaning
the highest or most distant point; the climax or peak of something
Example
The empire reached its apogee during the 18th century.
C1 adjective /ˈeɪ.mi.ə.bəl/

Amiable

Meaning
friendly and pleasant; good-natured; kind
Example
My neighbor is very amiable and always greets everyone warmly.
A2 adverb /ˈen.i.weər/

Anywhere

Meaning
in or to any place; wherever
Example
You can sit anywhere you like in this restaurant.
C1 noun əˈtrɒs.ɪ.tiz

atrocities

Meaning
Extremely wicked or cruel acts, typically involving physical violence or injury.
Example
The atrocities shocked the international community.
C2 noun /ˈɛərəˌnɔːt/

aeronaut

Meaning
A person who travels in an airship, balloon, or other aircraft.
Example
The aeronaut skillfully guided the hot-air balloon across the valley.
B2 adjective /əˈkuːstɪk/

acoustic

Meaning
relating to sound or the sense of hearing; not amplified by electrical means
Example
We recorded an acoustic version of the song in a quiet room.
B1 noun /ədˈmɪʃ.ən/

Admission

Meaning
the process of entering or being allowed to enter a school or organization; accepting that something is true
Example
She gained admission to Harvard University.
B2 noun /ˈɑːrtɪzən/

artisan

Meaning
a skilled craftsperson who makes things by hand
Example
The artisan crafted a beautiful wooden chair.
C1 adjective /ˈɔː.də.bəl/

Audible

Meaning
able to be heard; loud enough to hear
Example
The speaker's voice was barely audible from the back of the large hall.
B1 noun /ˈæmətər/

amateur

Meaning
A person who engages in a pursuit, especially a sport or art, on an unpaid basis.
Example
The painting looked impressive, even though it was done by an amateur.
B2 adjective + noun ˈædvɜːrs ɪˈfekts

adverse effects

Meaning
Negative or harmful impacts that result from an action or condition.
Example
Plastic usage has adverse effects on the environment.
C1 adverb /əˈraɪ/

awry

Meaning
away from the expected or proper direction; wrong or amiss
Example
The plan went awry when the weather suddenly changed.
B2 verb /əˈsɜːrt/

assert

Meaning
to state a fact or belief confidently and forcefully; to insist upon rights or claims
Example
She decided to assert her authority in the meeting.
C2 verb /ˌæpərˈteɪn/

appertain

Meaning
to relate to or be connected with something
Example
The rules only appertain to members of the club.
C1 noun /ˌɑːrtʃˈbɪʃəp/

archbishop

Meaning
A senior bishop in charge of an archdiocese in the Christian Church.
Example
The archbishop delivered a sermon to thousands of people.
C2 noun ˌæɡ.roʊˈiː.koʊˌsɪs.təm

agroecosystem

Meaning
An ecological system centered on agricultural activities and processes.
Example
A healthy agroecosystem improves soil fertility.
C2 adverb /əˈθwɔːrt/

athwart

Meaning
Across or in opposition to something.
Example
A fallen tree lay athwart the road, blocking traffic.
C2 verb /əˈkuːtə/

accoutre

Meaning
to dress or equip, especially in something impressive or elaborate
Example
The knight was accoutred in shining armor.
A2 preposition /əˈmʌŋ/

among

Meaning
surrounded by; in the middle of a group
Example
He was sitting among his friends.
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.
C2 noun /ˌæriˈviːst/

arriviste

Meaning
A person who has recently gained wealth or status but is considered arrogant or socially unsophisticated.
Example
The business world is full of ambitious arrivistes.
C2 adjective /ˌæk.rɪˈmoʊ.ni.əs/

acrimonious

Meaning
Bitter and angry, often involving harsh words.
Example
The debate turned acrimonious after the controversial remark.
C1 noun /əˈseɪlənt/

assailant

Meaning
a person who attacks another
Example
The police arrested the assailant at the scene.
C2 noun /ˌæprəˈbeɪʃən/

approbation

Meaning
approval or praise
Example
The plan won the approbation of the board members.
B2 noun /ˌɑːrkiˈɑːlədʒi/

archaeology

Meaning
the study of human history and prehistory through excavation and analysis of artifacts, monuments, and other physical remains
Example
She studied archaeology to learn about ancient civilizations.
B2 noun /ˌærɪˈstɑːkrəsi/

aristocracy

Meaning
a class of people holding exceptional rank and privileges, especially hereditary nobility
Example
The aristocracy often had influence over political decisions.
C1 adjective /ˈɑːr.dənt/

Ardent

Meaning
very enthusiastic; passionate; fervent
Example
She is an ardent supporter of environmental conservation.
C2 noun /ˈɑːriə/

aria

Meaning
a solo vocal piece with instrumental accompaniment, typically in an opera
Example
The soprano performed a moving aria during the second act.
C1 adjective /æmˈfɪb.i.əs/

Amphibious

Meaning
able to live both on land and in water; suitable for both land and water operations
Example
The amphibious vehicle can travel on both land and water.
B1 adjective, verb /əˈproʊpriət/ (adj), /əˈproʊprieɪt/ (verb)

appropriate

Meaning
suitable or proper in the circumstances (adj); to take something for one’s own use, often without permission (verb)
Example
Wearing formal clothes was appropriate for the ceremony.
C2 noun /ˈɔːspɪs/

auspice

Meaning
A sign, omen, or divine token; also refers to protection or support.
Example
The project was launched under the auspice of the government.
C2 noun /ˌæntɪˈtɒksɪn/

antitoxin

Meaning
A substance that neutralizes a specific toxin in the body.
Example
The doctor administered an antitoxin to counter the snake venom.
C1 noun /ˌæmplɪfɪˈkeɪʃən/

amplification

Meaning
the act or process of making something stronger, louder, or more intense; an expansion or elaboration of details
Example
The microphone provides amplification of the speaker’s voice.
B2 verb /əˈkʌmpəni/

accompany

Meaning
to go somewhere with someone as a companion or escort
Example
She asked her friend to accompany her to the concert.
B1 noun /əˈnaʊnsmənt/

announcement

Meaning
a public or formal statement giving information
Example
The principal made an important announcement about the new schedule.
B2 adjective /əˈstɒnɪʃt/

astonished

Meaning
feeling very surprised or amazed
Example
She was astonished by the magician's incredible trick.
C1 noun /əˈkʌmplɪs/

accomplice

Meaning
a person who helps another commit a crime
Example
The thief was arrested along with his accomplice.
C2 verb /əˈbʌt/

abut

Meaning
to be next to or share a border with
Example
The park abuts the river on the north side.
B2 adverb /əˈlɛdʒɪdli/

allegedly

Meaning
used to say that something is claimed to be true, though not proven
Example
He was allegedly involved in the robbery.
B2 adverb /ˈædɪkwətli/

adequately

Meaning
in a satisfactory manner
Example
He completed the task adequately, but could improve next time.
B1 adverb /əˈsaɪd/

Aside

Meaning
to one side; apart; away from the main part
Example
Please set your book aside and listen to me.
A2 noun /ˌænɪˈvɜːrsəri/

anniversary

Meaning
the yearly recurrence of a date marking a past event
Example
They celebrated their wedding anniversary with a dinner.
B2 noun əˌkaʊntəˈbɪləti

accountability

Meaning
The fact or condition of being accountable; responsibility.
Example
Accountability is key to maintaining trust in any system.
B2 noun ˈæp.ə.taɪt

appetite

Meaning
A natural desire to satisfy a bodily need, especially for food.
Example
Junk food increases appetite unnaturally.
C1 adjective /ˌæl.ɡəˈrɪð.mɪk/

algorithmic

Meaning
Based on or using algorithms; relating to mathematical rules or procedures.
Example
Algorithmic processes power artificial intelligence systems.
B2 noun /əˈtɒm.ɪk ˈhæb.ɪts/

atomic habits

Meaning
Small but powerful habits that can bring big changes over time
Example
Developing atomic habits leads to long-term success.
C2 noun /ˈɑːrbər/

arbor

Meaning
a shady garden shelter formed by trees, climbing plants, or latticework
Example
They rested under the arbor covered with roses.
B2 adverb /ˈæk.jə.rət.li/

Accurately

Meaning
in an exact way, without any mistakes; precisely; correctly
Example
She accurately predicted the outcome of the election.
C2 noun /ænˈtɪpədiːz/

antipodes

Meaning
places on opposite sides of the Earth; also refers to things that are direct opposites
Example
Australia and Britain are often considered antipodes of each other.
C2 noun /ˈɑːrkeɪndʒəl/

archangel

Meaning
A high-ranking angel, often considered a chief messenger or leader among angels.
Example
Michael is often depicted as the most powerful archangel.
A1 preposition, conjunction, adverb /ˈæftər/

after

Meaning
in the time following an event or another action
Example
We went for ice cream after the movie.
A1 conjunction /ænd/

and

Meaning
Used to connect words or sentences that are to be taken jointly.
Example
She bought apples and oranges.
C2 noun /ˈæl.ɪ.mənt/

aliment

Meaning
food or nourishment that sustains life
Example
Fruits and vegetables are important aliments for a healthy body.
C2 noun /əˈbeɪəns/

abeyance

Meaning
a state of temporary suspension or inactivity
Example
The project was held in abeyance until funds became available.
C1 verb /əˈkwɪt/

acquit

Meaning
to declare someone not guilty of a criminal charge; to conduct oneself in a specified way
Example
The jury decided to acquit the defendant of all charges.
C2 noun /əˈkʌmpənɪst/

accompanist

Meaning
A person who plays a musical instrument to support a singer or another musician.
Example
The pianist served as the accompanist for the singer during the concert.
B2 noun /ˈærəɡəns/

Arrogance

Meaning
having or revealing an exaggerated sense of one's own importance or abilities
Example
His arrogance made him unpopular among his colleagues.
C2 adjective /ˈæfəbəl/

affable

Meaning
friendly, easy to talk to, and pleasant in manner
Example
He is such an affable host that everyone feels comfortable at his parties.
C2 adjective /ˌæntɪˈmʌndeɪn/

antemundane

Meaning
Existing or occurring before the creation of the world.
Example
Some myths speak of an antemundane chaos before order was established.
B2 verb /ˈæɡ.rə.veɪt/

aggravate

Meaning
To make a situation worse or more serious.
Example
Scratching the rash will only aggravate the condition.
B1 adjective /ˌælfəˈbɛtɪkəl/

alphabetical

Meaning
Arranged in the order of the letters of the alphabet.
Example
The names were listed in alphabetical order.
C2 noun /ˈɑːrbɪtər/

arbiter

Meaning
a person who has the authority to settle a dispute or decide an issue
Example
The principal acted as the arbiter in the conflict between the students.
C2 noun /ˈæstər/

Aster

Meaning
a flowering plant with daisy-like flowers that typically bloom in fall
Example
The purple asters bloomed beautifully in the autumn garden.
C1 noun /ədˈhiːʒən/

adhesion

Meaning
the process or state of sticking to something
Example
Strong adhesion is needed for the tiles to stay in place.
C2 noun /ˈæpəˌsteɪt/

apostate

Meaning
A person who renounces a religious or political belief or principle.
Example
He was labeled an apostate after abandoning the faith of his community.
C1 noun /ˌæntɪˈsiːdənts/

antecedents

Meaning
previous events, conditions, or people that influence or serve as a basis for something that follows
Example
The lawyer examined the criminal antecedents of the suspect.
A2 verb /əˈtæk/

attack

Meaning
to use violence against someone; to criticize strongly
Example
The enemy forces attacked at dawn.
C2 adjective /eɪˈsɛfələs/

acephalous

Meaning
having no leader or head; headless
Example
The acephalous group soon fell into disorganization.
A2 verb (past tense / past participle) /əˈtræktɪd/

attracted

Meaning
felt interest or liking toward someone or something; was drawn by appeal or force
Example
She was attracted to the idea of studying abroad.
B2 noun ədˈvɑːns.mənt

advancement

Meaning
The process of promoting or moving forward; development or improvement in a particular area.
Example
Technological advancement shapes the future.
B1 adjective /ˌɔːtəˈmætɪk/

automatic

Meaning
working by itself without direct human control
Example
This car has an automatic transmission.
B1 noun /əˈfer/

Affair

Meaning
an event or situation; a matter that someone deals with
Example
The wedding was a grand affair with hundreds of guests.
C1 verb /əˈvɛndʒ/

avenge

Meaning
to inflict harm in return for an injury or wrong done to oneself or another
Example
He vowed to avenge his brother's death.
A2 noun ækt

act

Meaning
A written law passed by a legislative body.
Example
The act was passed in 2023.
B2 adjective + noun æmˈbɪʃəs ɪnˈdevər

ambitious endeavor

Meaning
A bold and determined attempt to achieve something challenging.
Example
Artemis is an ambitious endeavor in space exploration.
C2 adjective /ɔːˈrɔːrəl/

auroral

Meaning
Relating to or resembling the aurora, especially the northern lights.
Example
The scientists observed auroral activity in the night sky.
C1 noun ænˈtɪk.wə.ti

antiquity

Meaning
The ancient past, especially the period of classical and other human civilizations before the Middle Ages.
Example
The ruins are a reminder of the city's antiquity.
C2 noun /ˈiːdʒɪs/

aegis

Meaning
The protection, backing, or support of a particular person or organization.
Example
The project was carried out under the aegis of the United Nations.
C1 noun /ˌædməˈnɪʃən/

admonition

Meaning
a firm warning or reprimand; gentle or earnest advice
Example
He received an admonition for his careless work.
C2 adverb /əˈbæk/

Aback

Meaning
by surprise; unexpectedly
Example
I was taken aback by his sudden announcement.
C1 noun /ˈæd.vənt/

advent

Meaning
The arrival of a notable person, thing, or event.
Example
The advent of the internet changed the way people communicate.
C1 noun ˌæɡ.rəʊˈkem.ɪ.kəl

agrochemical

Meaning
A chemical product used in agriculture, especially a pesticide or fertilizer.
Example
Excessive use of agrochemicals can degrade soil quality.
C1 adjective /ˈæv.ɪd/

avid

Meaning
having an eager desire or enthusiasm for something
Example
She is an avid reader of mystery novels.
C1 verb /ˈɑːrbɪtreɪt/

arbitrate

Meaning
to settle a dispute between two parties by acting as an impartial judge
Example
The committee agreed to arbitrate the contract dispute.
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 /ˈæntɪˌtʃeɪmbər/

antechamber

Meaning
a small room serving as an entry to a larger one
Example
The guests waited in the antechamber before being admitted to the hall.
C1 adjective /əˈnæl.ə.ɡəs/

analogous

Meaning
Comparable in certain respects, typically in a way that makes clearer the nature of things being compared.
Example
The human brain is analogous to a supercomputer.