dynamo
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C1 noun /ˈdaɪnəˌmoʊ/

dynamo

Meaning
A machine that generates electricity; a person with great energy and enthusiasm.
Example
She is the real dynamo behind the success of the company.
B2 adjective /dɪsˈɡreɪsfəl/

Disgraceful

Meaning
shameful; bringing dishonor; worthy of condemnation
Example
His disgraceful behavior shocked everyone at the party.
A1 verb /drɪŋk/

drink

Meaning
to take liquid into the mouth and swallow it
Example
I drink water every morning.
B2 noun /dɪˈpreʃ.ən/

Depression

Meaning
a mental health condition characterized by persistent sadness; a severe economic downturn
Example
The therapist helped her cope with depression through cognitive behavioral therapy.
C1 verb /diːˈkoʊd/

decode

Meaning
to convert a coded message into a readable form; to interpret meaning
Example
The software can decode the hidden message within seconds.
C1 adjective /dɪˈspɪkəbl/

despicable

Meaning
Deserving hatred and contempt; vile or shameful.
Example
His despicable actions shocked the entire community.
C2 verb /ˈdɪðər/

dither

Meaning
to be indecisive or unable to make a decision
Example
He dithered for hours before choosing a restaurant.
A2 noun /ˈdɪfɪkəlti/

difficulty

Meaning
the state or condition of being hard to do, deal with, or understand
Example
He faced great difficulty in learning a new language.
C1 noun /ˈdɑːsieɪ/

dossier

Meaning
A collection of documents about a particular person, event, or subject.
Example
The lawyer presented a dossier of evidence to the court.
C2 noun /ˈdændi/

dandy

Meaning
a man who gives too much attention to his appearance and clothes
Example
The young dandy spent hours grooming himself before the party.
B1 adverb /ˈdeɪndʒərəsli/

Dangerously

Meaning
in a way that could cause harm or injury; riskily
Example
He was driving dangerously fast on the highway.
B2 noun /dɪˌskrɪm.ɪˈneɪ.ʃən/

Discrimination

Meaning
the unjust or prejudicial treatment of different categories of people; recognition of difference
Example
The company was sued for racial discrimination in their hiring practices.
A1 noun /deɪz/

days

Meaning
plural of day; refers to multiple 24-hour periods of time
Example
The project will take at least five days to finish.
C2 noun /dɪˈpɑːzɪtər/

depositor

Meaning
a person who places money in a bank or financial institution
Example
The bank provides insurance to protect depositors’ funds.
B2 adverb /ˈdʌbli/

doubly

Meaning
in a twofold manner; to twice the degree
Example
She felt doubly fortunate after winning the prize and getting a promotion.
B2 noun /dɛk/

deck

Meaning
A flat surface or platform, often on a ship or building.
Example
We enjoyed the sunset from the upper deck of the ferry.
C1 verb /dɪˈbɑːr/

debar

Meaning
To officially prevent someone from doing something.
Example
He was debarred from entering the competition due to cheating.
C2 noun /ˈdɒkɪt/

docket

Meaning
a list or schedule of cases to be tried in a court or items to be done
Example
The judge reviewed the docket before starting the session.
A2 noun /ˈdɛsktɒp/

desktop

Meaning
a computer designed to be used on a desk, typically with a separate monitor, keyboard, and mouse
Example
I keep my documents on the desktop for easy access.
A2 adjective /ˈdɪdʒ.ɪ.təl/

digital

Meaning
Relating to, using, or storing data or information in the form of digital signals; involving or relating to the use of computer technology.
Example
The world is shifting towards a digital economy.
A2 adjective /duː/

Due

Meaning
owed as a debt; expected at a certain time; scheduled
Example
The assignment is due tomorrow.
C1 noun ˌdɪs.æmˌbɪɡ.juˈeɪ.ʃən

disambiguation

Meaning
The removal of ambiguity by making something clear and unambiguous.
Example
The AI system applies disambiguation to refine text understanding.
B2 noun /ˈdeb.ɪt/

Debit

Meaning
an entry recording an amount owed; money taken from a bank account
Example
The bank showed a debit of fifty dollars from my checking account.
B2 noun /dæm/

Dam

Meaning
a barrier constructed to hold back water and raise its level; a female parent of an animal
Example
The massive dam provides electricity and controls flooding in the region.
C2 noun /dɪsˈkwaɪɪtjuːd/

disquietude

Meaning
A state of uneasiness, anxiety, or restlessness.
Example
His constant pacing showed his inner disquietude.
C2 adjective /ˈdjuːtiəbl/

dutiable

Meaning
subject to customs duty or tax
Example
Imported electronics are often dutiable at the border.
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 /dɪˈstɪlər/

distiller

Meaning
A person or company that makes alcoholic drinks or purified liquids by distillation.
Example
The distiller introduced a new brand of whiskey last year.
B1 verb /dɪˈzɜːrv/

deserve

Meaning
To be worthy of something, usually a reward or punishment.
Example
She worked hard and deserves recognition.
B1 verb /dɪp/

dip

Meaning
to put something quickly into a liquid and take it out again
Example
She dipped her bread into the soup.
C2 adjective /ˈdɒdərɪŋ/

doddering

Meaning
Weak, shaky, or unsteady, especially due to old age.
Example
The doddering professor struggled to climb the stairs.
C1 noun /ˈdrʌdʒəri/

drudgery

Meaning
Hard, menial, or dull work.
Example
She wanted to escape the drudgery of her daily routine.
B2 verb /ˈdɪkteɪt/

dictate

Meaning
to say words aloud for someone to write down; to give orders
Example
The boss dictates letters to his secretary.
C1 noun /dɪˈmiːnər/

demeanor

Meaning
a person's outward behavior or appearance
Example
Her calm demeanor impressed everyone at the meeting.
C1 verb /dɪˈvɒlv/

devolve

Meaning
To pass power, responsibility, or duties to another person or group.
Example
The responsibility will devolve on the new manager.
C1 noun /dɪsˈlɛksiə/

dyslexia

Meaning
A learning disorder characterized by difficulty reading due to problems identifying speech sounds and decoding words.
Example
The teacher used special methods to help the student with dyslexia.
B2 noun /diːp siː/

deep sea

Meaning
The deep parts of the sea or ocean, typically beyond the continental shelf.
Example
Many deep-sea creatures produce bioluminescence for survival.
B2 noun /dɪˌtɜː.mɪˈneɪ.ʃən/

determination

Meaning
Firmness of purpose; the quality of being determined; resolve.
Example
His determination to succeed was unwavering.
C2 adjective /dɪˈmjʊər/

demure

Meaning
reserved, modest, and shy
Example
She gave him a demure smile.
C1 adjective /dɪˈmɪnjətɪv/

diminutive

Meaning
extremely or unusually small
Example
Despite his diminutive size, he was a powerful leader.
C1 verb /dəˈmɛstɪkeɪt/

domesticate

Meaning
to tame an animal for use by humans; to adapt something for domestic use
Example
Humans domesticated dogs thousands of years ago.
C1 verb /daɪˈvɛst/

divest

Meaning
to strip away possessions, rights, or assets; to rid oneself of
Example
The company decided to divest its unprofitable division.
C1 verb /dɪˈbeɪs/

debase

Meaning
to reduce the quality, value, or dignity of something
Example
Corruption can debase the values of a society.
C2 adjective /dɪˈskrɛpənt/

discrepant

Meaning
showing a difference or inconsistency
Example
The witnesses gave discrepant accounts of the incident.
C1 noun /dɪˈsiːt/

Deceit

Meaning
the action or practice of deceiving someone by concealing or misrepresenting the truth
Example
His deceit was discovered when the truth about his qualifications came to light.
C1 verb /drɛntʃ/

drench

Meaning
to make someone or something completely wet
Example
The sudden rain drenched the players on the field.
B1 noun /dɪˈlaɪt/

Delight

Meaning
a feeling of happiness or pleasure; something that gives great pleasure
Example
The children's laughter filled her heart with pure delight.
C2 noun /dɪˌlɪniˈeɪʃən/

delineation

Meaning
the precise description, drawing, or outlining of something
Example
The artist’s delineation of the landscape was remarkably accurate.
B2 noun /ˈdaɪ.vər/

Diver

Meaning
a type of water bird that dives underwater to catch fish
Example
The diver disappeared beneath the surface to catch a fish.
B2 noun /ˈdɛməˌkræt/

democrat

Meaning
a supporter of democracy or a member of the Democratic Party in the US
Example
He is a strong democrat who believes in equal rights.
A2 verb /daɪ/

die

Meaning
to stop living; to cease to exist
Example
The flowers will die without water.
B2 noun /daɪm/

dime

Meaning
a small coin, especially a U.S. coin worth ten cents
Example
He gave me a dime for the phone call.
A2 adverb /ˌdaʊnˈsteəz/

Downstairs

Meaning
on or to a lower floor of a building
Example
Please go downstairs and wait in the lobby.
B2 adverb /ˈden.sli/

densely

Meaning
In a closely compacted or crowded manner.
Example
The area is densely covered with trees.
B1 verb /dæm/

damn

Meaning
to condemn or criticize strongly; used as an expletive to express anger or emphasis
Example
He damned the unfair system in his speech.
B1 noun /ˌdes.tɪˈneɪ.ʃən/

Destination

Meaning
the place to which someone or something is going; the ultimate purpose or end point
Example
Paris was their dream destination for their honeymoon trip.
C1 noun /ˈdɒktrɪn/

doctrine

Meaning
A set of beliefs or principles held and taught by a religious, political, or other group.
Example
The church follows a strict doctrine on moral values.
C2 noun /ˌdɛrɪˈlɪkʃən/

dereliction

Meaning
the state of being abandoned; neglect of duty
Example
The officer was charged with dereliction of duty.
B2 adjective /ˈdɒm.ɪ.nənt/

Dominant

Meaning
controlling, influencing, or prevailing over others; most important or powerful
Example
The dominant player controlled the entire basketball game.
B2 noun /dɪˈstrækʃənz/

distractions

Meaning
Things that prevent someone from concentrating on something else.
Example
Eliminate distractions for better productivity.
B2 noun /ˌdaɪəɡˈnoʊsɪs/

diagnosis

Meaning
The identification of a disease, condition, or problem through examination of symptoms.
Example
The diagnosis confirmed that she had diabetes.
C1 adjective /dɪˈstrɔːt/

distraught

Meaning
extremely upset and anxious, often to the point of being unable to think clearly
Example
She was distraught after losing her pet.
B1 noun /dɪˈzɜːrts/ (noun: reward or punishment deserved)

deserts

Meaning
what someone deserves, especially punishment or reward
Example
He finally got his just deserts for cheating in the exam.
A2 noun /dɪˈpɑːrtmənt/

department

Meaning
a division of a large organization such as a government, university, or company
Example
She works in the marketing department.
C1 noun /dɪˈkriː/

Decree

Meaning
an official order issued by a legal authority; a judicial decision or edict
Example
The king issued a decree that all citizens must pay additional taxes.
B2 verb /dɪˈskrɪmɪˌneɪt/

discriminate

Meaning
To treat someone unfairly based on race, gender, or other differences; or to recognize a distinction.
Example
The law prohibits employers from discriminating against women.
C1 verb /diːˈfjuːz/

defuse

Meaning
To make a situation less dangerous, tense, or explosive; to remove a fuse from a bomb.
Example
The negotiator helped defuse the tense situation.
C2 noun /ˌdɛkəˈsɪləbəl/

decasyllable

Meaning
A line of verse with ten syllables.
Example
The poet often wrote in decasyllable form.
C2 verb /dɪˈstreɪn/

distrain

Meaning
to seize someone's property in order to obtain payment of rent or other money owed
Example
The landlord distrained the tenant's furniture for unpaid rent.
C2 verb /ˌdɪsɪnˈtɜːr/

disinter

Meaning
to dig up something buried, especially a body
Example
The archaeologists disinterred ancient remains from the site.
B2 noun dɪˈstrækʃən

distraction

Meaning
Something that prevents concentration or takes attention away from something else.
Example
Distraction during study time can hinder learning.
C1 adjective /dɪˈsɜːrnəbl/

discernible

Meaning
able to be seen, recognized, or understood
Example
There was a discernible change in his behavior.
C1 noun /ˌdɜːrməˈtɑːlədʒɪst/

dermatologist

Meaning
A doctor who specializes in the treatment of skin diseases.
Example
She consulted a dermatologist for her skin allergy.
B2 verb /dɪsˈeɪbl/

disable

Meaning
to make something unable to function or operate
Example
The technician disabled the alarm system temporarily.
C1 adjective /drəˈkoʊniən/

draconian

Meaning
Extremely harsh and severe, especially laws or rules.
Example
The new regulations were criticized as draconian.
C2 verb /dɪˈspɔɪl/

despoil

Meaning
To steal or violently remove valuable possessions from a place.
Example
The invaders despoiled the village during the war.
B1 noun dɪˈfens

defense

Meaning
The action of defending from or resisting attack; protection from harm or danger.
Example
Defense was one of the central subjects.
B2 adjective /ˌdɪsədˈvæntɪdʒd/

disadvantaged

Meaning
Lacking the basic resources or conditions needed for a good standard of living or equal opportunities.
Example
The program provides support to disadvantaged children.
B2 noun /dɪsˈmeɪ/

Dismay

Meaning
concern and distress caused by something unexpected; consternation or alarm
Example
To our dismay, the concert was cancelled due to severe weather conditions.
C2 noun /ˌdaɪəˈlɛktɪk/

dialectic

Meaning
A method of argument or reasoning by dialogue, especially as a means of investigating truth.
Example
The philosopher used dialectic to challenge his students' assumptions.
C1 noun dɪˌzɝː.t̬ə.fɪˈkeɪ.ʃən

desertification

Meaning
The process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture.
Example
Deforestation accelerates desertification.
B2 verb /ˈdɛdɪkeɪt/

dedicate

Meaning
to devote time, effort, or oneself to a particular purpose or person
Example
She dedicated her life to helping the poor.
C2 noun /dɪˈkrɛpɪˌtjuːd/

decrepitude

Meaning
the state of being old, weak, and worn out
Example
The once-great empire fell into decrepitude.
C2 noun /ˈdɪfθɒŋ/

diphthong

Meaning
A complex vowel sound that begins with one vowel and glides into another within the same syllable.
Example
The word 'coin' contains a diphthong.
C2 verb /ˌdɒmɪˈnɪə/

domineer

Meaning
to assert one's will over another in an arrogant way
Example
He tends to domineer over his younger colleagues.
C2 adverb /ˈdɑːrklɪŋ/

darkling

Meaning
In the dark or growing dark; dimly.
Example
The forest creatures moved darkling through the night.
C2 adjective /ˌdɛl.ɪˈtɪə.ri.əs/

deleterious

Meaning
Causing physical or mental harm or damage.
Example
Smoking has deleterious effects on health.
C1 verb /ˈdɛnɪˌɡreɪt/

denigrate

Meaning
to criticize unfairly; to belittle or disparage someone or something
Example
He was quick to denigrate the achievements of his colleagues.
C1 verb /ˈdræm.ə.taɪz/

dramatize

Meaning
to present a story in a dramatic way, or to exaggerate something
Example
The novel was dramatized into a popular TV series.
C1 noun dɪˌtɪə.ri.əˈreɪ.ʃən

deterioration

Meaning
The process of becoming progressively worse; decline in quality, condition, or strength.
Example
Poor maintenance leads to material deterioration.
B2 verb dɪˈtɪrɪəˌreɪts

deteriorates

Meaning
To become progressively worse; to decline in quality, condition, or strength.
Example
The quality of air deteriorates due to pollution.
C2 verb /diːˈfrɑːk/

defrock

Meaning
to officially remove a priest or minister from their position and authority
Example
The church decided to defrock the priest after the scandal.
B1 noun /ˈdaɪ.ə.lɑːɡ/

Dialogue

Meaning
a conversation between two or more people; discussion aimed at exploration of a subject
Example
The political leaders engaged in meaningful dialogue to resolve the conflict.
C1 noun /dɪˈsaɪ.pəl/

Disciple

Meaning
a follower and student of a teacher, leader, or philosopher; devoted follower
Example
The famous philosopher had many disciples who spread his teachings worldwide.
C1 noun /ˌdɛrɪˈveɪʃən/

derivation

Meaning
The origin or development of something from a source.
Example
The derivation of the word comes from Latin.
C1 noun /ˈdɛməɡɒɡ/

demagogue

Meaning
A political leader who seeks support by appealing to popular desires and prejudices rather than by using rational argument.
Example
The crowd was swayed by the fiery speeches of the demagogue.
C1 verb /ˌdɪsəˈsɛmbəl/

disassemble

Meaning
To take apart something into its separate pieces.
Example
He had to disassemble the computer to repair it.
C1 noun ˌdɛməˈɡræfɪk trænˈzɪʃən

demographic transition

Meaning
A shift in population patterns from high birth and death rates to low birth and death rates as a country develops economically
Example
The demographic transition indicates a shift towards an aging society.
B2 adjective /dɛns/

dense

Meaning
Closely compacted in substance; having parts crowded together.
Example
The forest was so dense that little sunlight reached the ground.
C1 verb /doʊt/

dote

Meaning
to show excessive love or fondness for someone or something
Example
She tends to dote on her grandchildren.
A2 noun /ˈdraɪ.vər/

Driver

Meaning
a person who operates a motor vehicle
Example
The taxi driver knew all the shortcuts through the busy city.
B1 adjective /ˌdɪs.əˈpɔɪn.tɪd/

Disappointed

Meaning
sad because something has not happened or is not as good as expected
Example
She was disappointed with her exam results.
C1 noun ˌdɛɡrəˈdeɪʃən

degradation

Meaning
The condition or process of degrading or being degraded.
Example
Soil degradation due to overuse is a growing issue.
C1 noun /ˌdɪspɛnˈseɪʃən/

dispensation

Meaning
An exemption from a rule or usual requirement; a system of order, government, or control.
Example
The school granted him a special dispensation to skip the exam due to illness.
C1 adjective /dɪsˈɪntrəstɪd/

disinterested

Meaning
not influenced by personal interest; impartial or neutral
Example
The judge remained disinterested in the case.
B1 adjective /def/

Deaf

Meaning
unable to hear; having a hearing impairment
Example
The deaf child learned to communicate using sign language.
B2 noun /dɪˈsper/

Despair

Meaning
the complete loss or absence of hope; a state of feeling hopeless
Example
After losing his job, he fell into despair and couldn't see any way forward.
C1 noun /ˈdiːvə/

diva

Meaning
a famous female singer; a woman who is admired or behaves like a star
Example
The pop diva performed her latest hit to a cheering crowd.
C2 noun /ˌdaɪələˈtɪʃən/

dialectician

Meaning
A person skilled in dialectic or logical argument.
Example
Socrates is often considered the greatest dialectician in history.
A1 noun /dæd/

dad

Meaning
an informal term for father
Example
My dad taught me how to ride a bike.
C1 adjective /ˈdaʊ.ər/

dour

Meaning
relentlessly severe, stern, or gloomy in manner or appearance
Example
His dour expression made the meeting uncomfortable.
C2 verb /ˌdɪskəmˈpoʊz/

discompose

Meaning
To disturb the order or calmness of something or someone.
Example
The unexpected question seemed to discompose her.
C1 adjective /diːˈsɛntrəlaɪzd/

decentralized

Meaning
Controlled by several local offices or authorities rather than one single one.
Example
The decentralized system allowed for more control at local levels.
B2 noun /dwɔːrf/

dwarf

Meaning
a person, animal, or plant much smaller than average
Example
Snow White lived with seven dwarfs.
B2 verb dɪˈtɪəriəreɪt

deteriorate

Meaning
To become progressively worse in quality, condition, or performance; to decline.
Example
Unplanned growth can deteriorate living conditions.
A1 adjective /dɑːk/

Dark

Meaning
having little or no light; of a deep shade approaching black
Example
She prefers dark colors for her winter clothes.
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.
A2 noun /ˈdeɪ.tə/

Data

Meaning
facts and statistics collected together for reference or analysis; information in digital form
Example
Scientists analyzed the data from thousands of experiments to reach their conclusion.
C2 noun /ˌdɪspjuːˈteɪʃən/

disputation

Meaning
a formal debate or argument
Example
The disputation between the two scholars lasted for hours.
B1 noun /ˈdaɪ.mənd/

Diamond

Meaning
a precious stone that is extremely hard and brilliant when cut
Example
She wore a diamond ring on her finger.
C2 verb /dɪsˈmɛmbər/

dismember

Meaning
to cut or tear the limbs from a body; to divide into separate parts
Example
The king ordered his enemies to be dismembered.