agglomeration
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C2 noun /əˌɡlɒməˈreɪʃən/

agglomeration

Meaning
A mass or collection of things, sometimes clustered together.
Example
The city is an agglomeration of diverse cultures and communities.
C1 adjective /ˌæntiˈsleɪvəri/

antislavery

Meaning
Opposed to the practice or system of slavery.
Example
The antislavery movement gained momentum in the 19th century.
C2 noun əˌmæl.ɡəˈmeɪ.ʃən

amalgamation

Meaning
The action, process, or result of combining or uniting.
Example
The amalgamation of AI and big data is transforming industries.
B2 verb /ədˈmɪnɪstər/

administer

Meaning
to manage or control the running of; to give or apply medicine or treatment
Example
The nurse will administer the vaccine to all patients.
C2 noun /ˈæn.dʒi.əʊ.plæs.ti/

angioplasty

Meaning
A medical procedure to open blocked or narrowed blood vessels that supply blood to the heart.
Example
Angioplasty is now safer with robotic assistance.
C1 adjective /ɔːˈstɪə/

austere

Meaning
Severe or strict in manner, attitude, or appearance; plain and simple.
Example
The monk lived an austere life in the mountains.
C2 adjective /ɑːrˈbɔːr.i.əl/

arboreal

Meaning
Relating to trees or living in trees; tree-dwelling.
Example
Monkeys are arboreal animals that spend most of their time in trees.
C1 noun /aɪ/

aye

Meaning
an affirmative vote or expression of agreement
Example
The committee voted aye on the proposal.
C1 verb /ˈeɪ.li.ə.neɪt/

alienate

Meaning
To make someone feel isolated or estranged; to cause someone to become unfriendly.
Example
His rude behavior alienated many of his friends.
C2 verb /əbˈhɔːr/

abhor

Meaning
to regard with disgust and hatred
Example
She abhors cruelty to animals.
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.
C2 verb /əˈvaʊtʃ/

avouch

Meaning
to affirm or assert something as true
Example
He avouched his innocence before the judge.
C2 verb /əˈfaɪəns/

affiance

Meaning
to promise or pledge marriage; to formally engage
Example
They decided to affiance after years of friendship.
B2 adjective /ˌæn.tiˈsoʊ.ʃəl/

Antisocial

Meaning
avoiding social interaction; hostile to social order
Example
His antisocial behavior made it difficult for him to make friends.
B2 noun /əˈmɛnəti/

amenity

Meaning
a useful or pleasant facility or feature of a place
Example
The apartment has every amenity needed for comfortable living.
C1 noun /ˈæftərˌθɔːt/

afterthought

Meaning
Something added or considered later than originally planned.
Example
The gift seemed like an afterthought rather than a genuine gesture.
C2 noun /əˈklɪvɪti/

acclivity

Meaning
An upward slope or incline on the ground.
Example
The hikers struggled as they climbed the steep acclivity.
C2 noun /ˈæl.kə.laɪ ækt/

Alkali Act

Meaning
A British law passed in 1863 to regulate the emission of hydrochloric acid gas from alkali works, representing one of the first pieces of environmental legislation.
Example
The Alkali Act of 1863 was one of the first environmental laws.
B2 adverb /ˌɑːrtɪˈfɪʃəli/

Artificially

Meaning
by artificial means; not naturally; in a fake manner
Example
The lake was artificially created for irrigation purposes.
C2 verb əˈmiːljəreɪt

ameliorate

Meaning
To make better; improve or enhance something.
Example
The new policies are designed to ameliorate living conditions.
C1 noun /ˌɑːr.kəˈpɛl.əˌɡoʊ/

archipelago

Meaning
A group of islands clustered together in a body of water.
Example
Indonesia is an archipelago with thousands of islands.
A2 noun /əˈpɪə.rəns/

Appearance

Meaning
the way that someone or something looks; an act of performing or participating in a public event
Example
Her appearance at the event surprised everyone.
C1 noun /ˈɔːnɪŋ/

awning

Meaning
a sheet of canvas or material stretched on a frame to shelter a place from the sun or rain
Example
We sat under the awning to avoid the heavy rain.
B2 noun /ˈɑːr.mər/

Armour

Meaning
protective covering worn by soldiers; metal plating for military vehicles
Example
The knight wore heavy armour to protect himself in battle.
C1 adjective ˌæd.vɚˈser.i.əl

adversarial

Meaning
Involving or characterized by conflict or opposition.
Example
The two companies have an adversarial relationship in the market.
A2 adjective /əˈnɔɪɪŋ/

annoying

Meaning
causing irritation or mild anger; bothersome or troublesome
Example
The constant noise from the street was extremely annoying.
B2 noun, verb /ˈɑːrkaɪv/

archive

Meaning
A collection of historical documents or records; to store or preserve information for future use.
Example
The library decided to archive all the old manuscripts.
C1 adjective ɔːɡˈmen.tɪd

augmented

Meaning
having been made greater in size or value.
Example
The new software provided augmented reality features.
B2 noun /ˈæplɪkənt/

applicant

Meaning
a person who applies for something, such as a job or a position
Example
The applicant was interviewed for the position.
C1 adjective /ɔːˈtɒn.ə.məs/

autonomous

Meaning
Acting independently or having the freedom to do so.
Example
Autonomous systems ensure greater precision.
C2 noun /ˈætəvɪzəm/

atavism

Meaning
The recurrence of traits or characteristics from a remote ancestor.
Example
The scientist noted atavism in the child’s physical features.
C1 noun /əˈlɜːrtnəs/

alertness

Meaning
the state of being mentally aware and quick to notice or respond; vigilance
Example
The driver maintained a high level of alertness during the long journey.
B2 adjective /əˈfektɪd/

Affected

Meaning
influenced; impacted; touched by something
Example
The flood-affected areas need immediate assistance.
C1 adjective /ˌeɪˈtɪpɪkəl/

atypical

Meaning
not representative of a type, group, or class; unusual or abnormal
Example
The doctor said it was an atypical case of the disease.
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.
C2 noun /ˈɛərəˌstæt/

aerostat

Meaning
A lighter-than-air craft, such as a balloon, that is lifted by gas.
Example
The military used an aerostat for surveillance over the border.
C1 noun /ˈæltoʊ/

alto

Meaning
the second highest adult singing voice, between soprano and tenor
Example
She sang the alto part in the choir beautifully.
B2 noun /ˈɑːrm.pɪt/

Armpit

Meaning
the hollow area under the arm where it joins the shoulder
Example
He applied deodorant to his armpit.
C2 adjective /əˈɡɒɡ/

agog

Meaning
Highly excited by eagerness, curiosity, or anticipation.
Example
The children were agog with excitement as they waited for the magician to appear.
B1 adjective /ˈæbsənt/

absent

Meaning
not present at a place or event
Example
She was absent from the meeting yesterday.
B1 noun /əkˈsɛptəns/

acceptance

Meaning
the act of agreeing to receive or undertake something offered
Example
Her acceptance of the award was met with applause.
C1 noun esˈθet.ɪks

aesthetics

Meaning
A set of principles concerned with the nature and appreciation of beauty, especially in art and design.
Example
Interior design focuses on aesthetics and functionality.
C2 noun ˌæɡ.roʊ.iˈkɒl.ə.dʒi

agroecology

Meaning
A scientific discipline that studies agricultural systems by applying ecological concepts and principles.
Example
Agroecology promotes eco-friendly farming.
B1 noun /ˈæŋɡl/

angle

Meaning
The space between two intersecting lines or surfaces at the point where they meet.
Example
The teacher explained how to measure an angle in geometry.
A2 verb /əˈreɪndʒ/

arrange

Meaning
to organize or put in order; to plan or prepare
Example
She arranged the flowers in a vase.
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.
B2 noun /ˌæk.wɪˈzɪʃ.ən/

Acquisition

Meaning
An asset or object bought or obtained, typically by a library or museum.
Example
The company's acquisition strategy boosted growth.
B2 verb /ˈɔːltər/

alter

Meaning
to change or modify something slightly but significantly
Example
She decided to alter her dress to make it fit better.
C2 verb /əˈɡriːv/

aggrieve

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

antler

Meaning
The branched horns on the head of a deer or similar animal, usually shed and regrown annually.
Example
The deer’s antlers grew larger each year.
B2 noun /ˌɔːltəˈreɪʃən/

alteration

Meaning
a change or modification made to something
Example
The tailor made an alteration to the suit.
C2 adjective /əˈluːsɪv/

allusive

Meaning
Making indirect references or hints; suggestive without being explicit.
Example
The novel is full of allusive passages that point to classical literature.
C1 adjective ˌæɡrɪˈkʌltʃərəli sɪɡˈnɪfɪkənt

agriculturally significant

Meaning
Important or crucial related to farming and agriculture
Example
Winter is agriculturally significant for crop production.
B2 noun, verb /ˈædvɜːrt/

advert

Meaning
(noun) a notice or announcement in a public medium promoting a product, service, or event; (verb) to refer to something in speaking or writing
Example
The company placed an advert in the newspaper for the new position.
C2 adjective /æbˈstiːmiəs/

abstemious

Meaning
not allowing oneself much food or drink; marked by moderation
Example
She lived an abstemious life, avoiding all luxuries.
B2 noun ˌæd.æpˈteɪ.ʃən

adaptation

Meaning
The action or process of adapting or being adapted.
Example
Adaptation to climate change is critical for resilience.
C1 noun /ˌænɛkˈseɪʃən/

annexation

Meaning
the act of adding or taking control of territory or property, especially by a state
Example
The annexation of the region led to international condemnation.
C2 noun /ˌeɪd də ˈkæmp/

aide-de-camp

Meaning
A military officer acting as a confidential assistant to a senior officer.
Example
The general was accompanied by his aide-de-camp during the ceremony.
C1 noun ˈæf.lu.əns

affluence

Meaning
The state of having a great deal of money; wealth.
Example
His affluence allowed him to travel the world.
C2 adjective /əˈkɪliən/

achillean

Meaning
like or characteristic of Achilles; strong but vulnerable
Example
His achillean pride made him blind to danger.
C1 adjective /æbˈdɑː.mə.nəl/

abdominal

Meaning
relating to the abdomen (the part of the body between the chest and pelvis)
Example
He complained of severe abdominal pain.
B1 adjective /ədˈvænst/

advanced

Meaning
highly developed or complex
Example
He is studying an advanced level of mathematics.
C1 noun /əˈpærəl/

apparel

Meaning
Clothing, especially formal or special clothes.
Example
The store specializes in wedding apparel.
B1 adjective /ˈæŋk.ʃəs/

Anxious

Meaning
feeling worried or nervous; eager with concern
Example
She felt anxious about her upcoming job interview.
A1 verb /əˈɡriː/

agree

Meaning
to have the same opinion; to consent; to be in harmony
Example
We all agree that the plan is excellent.
B2 adverb /əˈbrʌptli/

Abruptly

Meaning
suddenly and unexpectedly; without warning
Example
The meeting ended abruptly when the power went out.
C2 noun /ˈæl.baɪt/

albite

Meaning
A white or colorless mineral of the feldspar group, often found in igneous rocks.
Example
Geologists discovered albite crystals in the rock sample.
B2 adjective /ˌæbsənt ˈmaɪndɪd/

absent-minded

Meaning
often forgetting things or not paying attention
Example
He is so absent-minded that he often forgets his keys.
C2 verb /ˌæntɪˈsiːd/

antecede

Meaning
to come before in time or order
Example
A short introduction usually antecedes the main text.
B2 adverb /ˈæŋkʃəsli/

anxiously

Meaning
in a worried, nervous, or uneasy manner; with anxious anticipation
Example
She waited anxiously for the exam results.
C2 noun /əˈnækrəˌnɪzəm/

anachronism

Meaning
something that is out of its proper time period, especially something old-fashioned in a modern context
Example
Using a typewriter today feels like an anachronism.
C1 noun /ˈæl.kə.laɪ/

alkali

Meaning
a soluble base substance, typically with a pH greater than 7, that neutralizes acids
Example
Soap contains alkali which helps remove grease.
C1 noun /ˌæɡ.rəˈveɪ.ʃən/

aggravation

Meaning
The act of making a situation worse or the state of being worsened.
Example
The delay caused great aggravation for the passengers.
C1 adverb /ˈæmpli/

amply

Meaning
more than sufficiently; generously
Example
She was amply rewarded for her hard work.
C2 noun, adjective /ˌæntiˌspæzˈmɒdɪk/

antispasmodic

Meaning
A drug or agent that relieves or prevents muscle spasms.
Example
The doctor prescribed an antispasmodic to ease the pain.
A2 adverb /ˈæktʃuəli/

actually

Meaning
used to emphasize that something is true, especially when surprising
Example
She actually completed the project ahead of schedule.
B2 noun /ˈɔːkʃən/

Auction

Meaning
a public sale in which goods or property are sold to the highest bidder
Example
The antique furniture was sold at an auction last weekend.
B2 adjective /əˈvɔɪdəbl/

avoidable

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

align

Meaning
To arrange things in a straight line; to adjust or bring into proper relation or agreement.
Example
The manager asked the team to align their goals with the company's mission.
C1 adjective /ˌæpəˈθɛtɪk/

apathetic

Meaning
showing or feeling little or no interest, enthusiasm, or concern
Example
He was apathetic about the outcome of the match.
C1 noun əˈtrɪʃ.ən

attrition

Meaning
The process of reducing something's strength or effectiveness through sustained attack or pressure.
Example
The company faced high employee attrition due to job dissatisfaction.
C2 noun /ˈæk.rɪ.moʊ.ni/

acrimony

Meaning
Bitterness and anger, especially in speech or behavior.
Example
The divorce was filled with acrimony and disputes.
B2 noun /ˌɔː.θɛnˈtɪs.ə.ti/

authenticity

Meaning
The quality of being authentic; genuineness or truthfulness.
Example
The authenticity of the document was verified.
B1 noun /ˈæŋkəl/

ankle

Meaning
the joint connecting the foot with the leg
Example
He twisted his ankle while playing football.
B2 noun /æŋˈzaɪ.ə.ti/

anxiety

Meaning
A feeling of worry, nervousness, or unease about something with an uncertain outcome.
Example
Meditation helps reduce anxiety and stress.
B2 noun /ˌæn.ɪˈmeɪ.ʃən/

Animation

Meaning
the technique of making inanimate objects appear to move; liveliness and enthusiasm
Example
The animation in this movie is incredibly detailed.
C1 adjective /ˈɔːrəl/

aural

Meaning
Relating to the ear or the sense of hearing.
Example
The lecture was an aural experience as well as an intellectual one.
A2 noun /ˌænɪˈvɜːrsəri/

anniversary

Meaning
the yearly recurrence of a date marking a past event
Example
They celebrated their wedding anniversary with a dinner.
C2 noun /ˈɔːldər/

alder

Meaning
A type of tree from the birch family that typically grows in wet ground and has simple, serrated leaves.
Example
The alder trees grew thick along the riverbank.
B2 verb /əˈbændən/

abandon

Meaning
to give up completely; to leave permanently
Example
They had to abandon their house due to flooding.
C1 noun /əˈnɒməli/

anomaly

Meaning
something that deviates from the norm or expected result
Example
The sudden drop in temperature was considered an anomaly.
C1 noun /ˌeɪ.li.əˈneɪ.ʃən/

alienation

Meaning
The state of being isolated or estranged from a group or activity.
Example
The new policies created a sense of alienation among employees.
C2 adverb /əˈmʌk/

amuck

Meaning
in a frenzied, uncontrolled, or chaotic manner
Example
The bull ran amuck through the village.
C2 verb /əˈsɛvəˌreɪt/

asseverate

Meaning
to affirm or declare positively and earnestly
Example
He asseverated that he had never seen the man before.
C2 noun /ˌæɡ.rəˈdeɪ.ʃən/

aggradation

Meaning
The process of land being built up by sediment deposition.
Example
Aggradation helps in the natural expansion of riverbanks.
C1 noun /ˈænti ˈeəkræft ɡʌn/

Anti-aircraft-gun

Meaning
a weapon designed to attack aircraft from the ground
Example
The anti-aircraft gun was positioned to defend the military base.
B2 noun /əˈpɒstrəfi/

apostrophe

Meaning
A punctuation mark (') used to indicate possession or the omission of letters or numbers.
Example
You need an apostrophe in the word 'children’s'.
B2 noun ədˈvɜː.sɪ.ti

adversity

Meaning
Difficulties; misfortune; a difficult or unpleasant situation.
Example
He remained strong in the face of adversity.
B2 noun /ɔː/

awe

Meaning
a feeling of deep respect mixed with fear or wonder
Example
The children looked at the fireworks in awe.
B1 verb /əˈdæpt/

adapt

Meaning
to adjust or change something to suit new conditions or situations
Example
He quickly adapted to the new environment.
B1 verb /əˈweɪk/

awake

Meaning
to stop sleeping; to become conscious or alert
Example
I awake every morning at six o'clock.
C1 noun /ədˈmɪtəns/

admittance

Meaning
the process or fact of entering or being allowed to enter a place
Example
No admittance without a valid ticket.
C2 verb /əˈdʒʌdʒ/

adjudge

Meaning
to consider or declare officially in a legal or formal manner
Example
He was adjudged guilty by the court.
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.
C2 verb /ˈɔːltərˌkeɪt/

altercate

Meaning
to argue or dispute angrily or noisily
Example
The neighbors began to altercate over the boundary wall.
C2 noun /ˌæpəˈrɪʃən/

apparition

Meaning
A ghostly figure or an unusual or unexpected appearance.
Example
The children were frightened by the sudden apparition in the old house.
C1 noun ɔːˈstɛr.ɪ.ti

austerity

Meaning
Simple and disciplined lifestyle, avoiding luxury.
Example
The government implemented austerity measures to reduce expenses.
A1 noun /ɑːrm/

Arm

Meaning
the upper limb of the human body from the shoulder to the hand
Example
She raised her arm to ask a question.
B2 verb /əˈpɔɪnt/

appoint

Meaning
to choose someone for a job or position
Example
The board will appoint a new director.
C1 noun /ɔːˈtɒmətən/

automaton

Meaning
A machine that works automatically; also refers to a person who behaves like a machine, without thinking.
Example
He worked like an automaton, without showing any emotion.
B2 noun /ˈɑː.mənd/

Almond

Meaning
edible seed of the almond tree
Example
Almonds are a healthy snack rich in protein and good fats.
C2 noun ˌæɡ.roʊˈfɔːr.ɪ.stri

agroforestry

Meaning
A land use management system in which trees or shrubs are grown around or among crops or pastureland.
Example
Agroforestry improves soil quality and crop yield.
B2 noun /ˌæl.əˈɡeɪ.ʃən/

Allegation

Meaning
a claim that someone has done something wrong or illegal
Example
The allegation against him was proven false.
B2 verb əˈpɔɪn.tɪd

appointed

Meaning
Assign a job or role to someone; designate someone to a position.
Example
Appointed officials carry significant responsibilities.
B1 verb /əˈʃʊr/

assure

Meaning
to make someone feel certain or confident about something
Example
He assured her that everything would be fine.
B1 noun /ˈeɪ.dʒən.si/

Agency

Meaning
a business or organization that provides a particular service
Example
She works for a travel agency downtown.
C2 adjective /ˌækwiˈɛsənt/

acquiescent

Meaning
ready to accept something without protest, or to do what someone else wants
Example
He gave an acquiescent smile and agreed to the plan.
C2 adverb /əˈskæns/

askance

Meaning
With suspicion, mistrust, or disapproval.
Example
She looked askance at his unusual proposal.
C2 adjective /ænˈhaɪdrəs/

anhydrous

Meaning
Containing no water.
Example
The chemist used anhydrous ammonia for the experiment.
C1 noun /əˈboʊd/

abode

Meaning
a place of residence; a home
Example
They invited us to their humble abode.
C1 noun /ˌæn.ɪˈmɒs.ə.ti/

Animosity

Meaning
strong hostility or dislike; active hatred or ill will
Example
There was clear animosity between the two rival teams.