mutation
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C1 noun /mjuːˈteɪʃn/

mutation

Meaning
A change in form, structure, or nature, especially in genetics.
Example
Scientists discovered a genetic mutation that caused the disorder.
C1 noun /ˈmænɪkɪn/

mannequin

Meaning
a life-sized model of a human figure used by shops to display clothes
Example
The mannequin in the shop window was dressed in a red gown.
C1 adjective /ˈmuː.və.bl̩/

Movable

Meaning
capable of being moved; not fixed in position
Example
The furniture is movable so we can rearrange the room easily.
C1 adjective /ˈmænɪfoʊld/

Manifold

Meaning
many and of several different types; multiple; various
Example
The project has manifold benefits for the community.
C1 noun /məˈnɒtəni/

monotony

Meaning
Lack of variety and interest; tedious repetition and routine.
Example
Breaking the monotony of everyday life can improve mental health.
C1 noun /ˈmætɪneɪ/

matinee

Meaning
A performance, especially a play or movie, that takes place in the afternoon.
Example
We bought tickets for the Sunday afternoon matinee.
C1 adjective /ˈmjuːtɪd/

muted

Meaning
softened in sound, color, or effect; subdued
Example
The room was painted in muted shades of blue and grey.
C1 noun /ˈmeɪ.triˌɑːrk/

matriarch

Meaning
A woman who is the head of a family or community.
Example
The matriarch of the family made all important decisions.
C1 noun /ˈmɪm.ɪk/

Mimic

Meaning
A person who copies or imitates the actions, speech, or mannerisms of others
Example
The talented mimic could perfectly imitate famous celebrities.
C1 noun /ˈmenəs/

Menace

Meaning
A person or thing that is likely to cause harm; a threat
Example
The reckless driver was a menace to everyone on the road.
C1 noun /ˌmɪsˈkɒn.dʌkt/

Misconduct

Meaning
Unacceptable or improper behavior, especially by a professional person
Example
The officer was dismissed for professional misconduct.
C1 noun /ˈmætrəˌmoʊni/

matrimony

Meaning
The state of being married; marriage.
Example
They entered into matrimony after years of friendship.
C1 adjective /ˈmɔːtəl/

Mortal

Meaning
subject to death; having a limited lifespan; human
Example
All human beings are mortal and will eventually die.
C1 noun /ˈmɔːrtər/

mortar

Meaning
a mixture used in building to bond bricks or stones together; also, a small cannon for firing shells
Example
The workers applied mortar between the bricks.
C1 noun /ˈmɪd.əl.mæn/

Middleman

Meaning
A person who acts as an intermediary between two parties in a business transaction
Example
They decided to cut out the middleman and sell directly to customers.
C1 noun /ˈmeɪhɛm/

mayhem

Meaning
Violent or extreme disorder; chaos and destruction.
Example
The protest turned into mayhem when the crowd clashed with the police.
C1 verb /ˈmedɪkeɪt/

medicate

Meaning
to treat with medicine; to give drugs to someone for medical purposes
Example
The doctor will medicate the patient to reduce inflammation.
C1 noun /ˈmedoʊ/

Meadow

Meaning
A piece of grassland, especially one used for hay
Example
The cows grazed peacefully in the green meadow.
C1 adjective/noun nɪˈmɒn.ɪk

mnemonic

Meaning
Assisting or intended to assist memory; a device or technique to aid memory.
Example
A mnemonic device helps students remember complex concepts.
C1 noun /məˈnɒɡəmi/

monogamy

Meaning
The practice of being married to or in a relationship with only one person at a time.
Example
Many cultures encourage monogamy as the ideal form of marriage.
C1 adjective /məˈtɜːrnəl/

Maternal

Meaning
relating to a mother; motherly
Example
She showed maternal care towards the orphan child.
C1 adjective /maɪˈkroʊ.bi.əl/

microbial

Meaning
Related to bacteria, fungi, and other microscopic organisms.
Example
Microbial activity in the soil improves fertility.
C1 noun /ˌmaʊntəˈnɪə/

mountaineer

Meaning
A person who climbs mountains as a sport or profession.
Example
The mountaineer reached the summit after a long climb.
C1 noun /ˈmæɡnɪtuːd/

Magnitude

Meaning
The great size or extent of something; importance
Example
The magnitude of the earthquake was measured at 7.5 on the Richter scale.
C1 noun /ˌmɒd.jʊˈleɪ.ʃən/

modulation

Meaning
The process of varying or controlling something.
Example
Proper modulation of voice enhances communication skills.
C1 adjective /ˈmærɪtəl/

marital

Meaning
Relating to marriage or the relationship between husband and wife.
Example
They sought counseling to resolve their marital issues.
C1 verb /ˈmɒd.jʊ.leɪt/

modulate

Meaning
To change the strength, tone, or pitch of something; to adjust or regulate.
Example
A good speaker knows how to modulate their voice.
C1 noun /ˈmɪʃ.ən.ɛr.i/

Missionary

Meaning
A person sent on a religious mission to promote their faith in a foreign country
Example
The missionary spent years teaching and helping people in remote villages.
C1 noun /meər/

Mare

Meaning
an adult female horse
Example
The beautiful mare galloped across the meadow.
C1 noun məˈnjʊər

manure

Meaning
Animal dung used for fertilizing land; organic matter used as fertilizer.
Example
Organic manure enhances soil fertility.
C1 adjective /ˈmʌðərli/

Motherly

Meaning
having qualities characteristic of a mother; caring and protective
Example
She showed motherly care and affection towards all the children.
C1 noun /ˈmoʊ.tər ˈlɔː.ri/

Motor lorry

Meaning
a large motor vehicle used for transporting goods; truck
Example
The motor lorry delivered fresh vegetables to the market.
C1 adjective /ˈmɒdʒʊlər/

modular

Meaning
Employing or involving a module or modules as the basis of design or construction.
Example
The modular design allows for easy customization and scalability.
C1 noun /mɒb/

Mob

Meaning
a large crowd of people; a group that acts in a violent way
Example
An angry mob gathered outside the building.
C1 adjective /ˈmiːɡər/

meager

Meaning
Lacking in quantity or quality; inadequate.
Example
He could barely survive on his meager salary.
C1 noun /ˈmiːdieɪtər/

Mediator

Meaning
A person who attempts to make people involved in a conflict agree
Example
The United Nations often acts as a mediator in international disputes.
C1 noun /ˈmoʊɡəl/

mogul

Meaning
A powerful or influential person, especially in business or media.
Example
He became a tech mogul by founding a billion-dollar company.
C1 adjective /ˌmɪsəˈleɪniəs/

Miscellaneous

Meaning
various; diverse; mixed; assorted
Example
The box contained miscellaneous items from different periods.
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 verb /ˈmɪt.ɪ.ɡeɪt/

mitigate

Meaning
To make less severe, serious, or painful; to lessen the severity of damage or harm.
Example
Proper planning can mitigate financial risks.
C1 noun /ˈmeɪ.trɪks/

matrix

Meaning
An environment or structure in which something develops; also a mathematical array of numbers.
Example
The cultural matrix shaped his worldview.
C1 verb məˈnɒp.ə.laɪz

monopolize

Meaning
Control exclusively, dominate market.
Example
The company tried to monopolize the market.
C1 adjective /ˌmiːtiˈɔːrɪk/

meteoric

Meaning
Relating to meteors; very rapid and often temporary.
Example
The singer’s meteoric rise to fame surprised everyone.
C1 noun /ˈmɒdɪfaɪər/

modifier

Meaning
a word or element that changes, limits, or describes the meaning of another word; something that alters or adjusts
Example
In the phrase 'very cold', 'very' is a modifier of 'cold'.
C1 noun ˈmiːdiə ˈdɒmɪnəns

media dominance

Meaning
The control and powerful influence that media has over communication and information distribution in society.
Example
The internet has enhanced media dominance globally.
C1 adjective ˌmɒn.jʊˈmɛn.təl

monumental

Meaning
Great in importance, extent, or size; exceptionally great; forming or serving as a monument.
Example
The discovery of electricity was a monumental achievement.
C1 verb, noun /mɛʃ/

mesh

Meaning
To fit or work together properly; or a material made of interlaced threads.
Example
The two gears mesh perfectly to keep the machine running smoothly.
C1 noun, verb /məˈnuː.vər/

maneuver

Meaning
a planned or skillful movement or action; to move skillfully or carefully
Example
The pilot maneuvered the plane through the storm.
C1 adjective məˈdʒes.tɪk

Majestic

Meaning
Having impressive beauty, dignity, or grandeur; regal and stately in appearance.
Example
The majestic Himalayas stand tall against the sky.
C1 noun nɪˈmɒnɪks

mnemonics

Meaning
A technique to aid memory; a device such as a pattern of letters, ideas, or associations
Example
Mnemonics help in remembering complex concepts easily.
C1 noun /ˌmɪsˈdiːd/

Misdeed

Meaning
A wicked or illegal act; wrongdoing
Example
He regretted his past misdeeds and tried to make amends.
C1 adjective /məˈnæstɪk/

monastic

Meaning
Relating to monks, monasteries, or a life of religious seclusion.
Example
He chose to live a monastic life away from the city.
C1 noun /mɪˈtrɒp.ə.lɪs/

Metropolis

Meaning
A very large city, especially the main city of a country or region
Example
New York is a bustling metropolis with millions of residents.
C1 adjective /məˈnɒtənəs/

Monotonous

Meaning
lacking in variety; tediously unvarying; boring and repetitive
Example
The monotonous sound of the rain made everyone feel sleepy.
C1 noun /meɪn/

mane

Meaning
the long hair growing on the neck of a horse, lion, or other animal
Example
The lion shook its thick mane proudly.
C1 noun /ˈmɪs.hæp/

Mishap

Meaning
An unlucky accident or unfortunate event, typically minor
Example
The cooking mishap resulted in a burnt dinner.
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 noun /ˈmɪl.ɪ.tənt/

Militant

Meaning
A person who uses aggressive or violent methods to promote a political or social cause
Example
The militant group demanded immediate political reforms.
C1 noun /ˈmɔːr.nər/

Mourner

Meaning
a person who attends a funeral or shows grief for someone who has died
Example
The mourners gathered at the cemetery to pay their respects.
C1 noun /ˌmɪsˈtrʌst/

Mistrust

Meaning
Lack of trust; suspicion or doubt about someone or something
Example
There was deep mistrust between the two political parties.
C1 adjective /ˈmæn.li/

Manly

Meaning
having qualities traditionally associated with men; brave; courageous
Example
He showed manly courage during the crisis.
C1 verb /ˌmɪsɪnˈtɜːrprɪt/

misinterpret

Meaning
to understand or explain something wrongly
Example
He misinterpreted her silence as agreement.
C1 noun /ˈmaʊθ.fʊl/

mouthful

Meaning
the amount of food or drink that fills the mouth, or a long and difficult word or phrase
Example
He took a big mouthful of water after the run.
C1 noun /ˈmɒŋ.ɡuːs/

Mongoose

Meaning
a small carnivorous mammal known for its ability to kill venomous snakes
Example
The mongoose quickly attacked the cobra to protect its young.
C1 noun /mɔːs/

Moss

Meaning
a small flowerless plant that grows in clumps in moist places
Example
Green moss covered the old stone wall.
C1 noun ˌmek.ə.naɪˈzeɪ.ʃən

mechanization

Meaning
The process of introducing machines or replacing manual labor with machines.
Example
Mechanization has revolutionized agriculture.
C1 noun /mɔːˈtæləti/

mortality

Meaning
the state of being subject to death; the death rate of a population
Example
Advancements in medicine have reduced child mortality significantly.
C1 noun /ˈmɒnəˌθiːɪzəm/

monotheism

Meaning
The belief in the existence of only one God.
Example
Islam and Christianity are religions based on monotheism.
C1 noun /ˈmaɪzər/

miser

Meaning
A person who hoards wealth and spends as little money as possible.
Example
The old miser refused to donate even a penny to charity.
C1 adjective /ˈmeɪkˌʃɪft/

makeshift

Meaning
used as a temporary substitute; improvised
Example
They used boxes as a makeshift table.
C1 noun/adjective /ˈmɒnəkrəʊm/

monochrome

Meaning
A photograph, painting, or screen image in black and white or varying tones of one color.
Example
The old film was shot entirely in monochrome.
C1 noun /ˈmɒd.ə.sti/

Modesty

Meaning
the quality of being humble and not boastful about achievements
Example
Despite his success, he showed great modesty.
C1 noun/adjective /ˈmæm.əθ/

mammoth

Meaning
An extinct large elephant-like animal with long curved tusks; also means something huge.
Example
The company faced a mammoth challenge during expansion.
C1 adjective /ˈmɑːrʃəl/

martial

Meaning
Related to war, soldiers, or military life.
Example
The country imposed martial law during the crisis.
C1 noun ˈmæŋɡroʊv ˈfɒrɪst

Mangrove Forest

Meaning
A coastal forest ecosystem characterized by salt-tolerant trees and shrubs that grow in intertidal zones.
Example
Sundarbans is the world's largest mangrove forest.
C1 noun ˌmiː.diˈɒk.rə.ti

mediocrity

Meaning
Being average or ordinary, not particularly good.
Example
He refused to settle for mediocrity and aimed for greatness.
C1 noun /ˈmeɪsən/

mason

Meaning
a person skilled in building with stone, brick, or concrete
Example
The mason carefully laid the bricks for the new house.
C1 adjective /məˈroʊs/

morose

Meaning
sullen, gloomy, or ill-tempered
Example
He became morose after losing his job.
C1 verb məˈtæb.ə.laɪz

metabolize

Meaning
Process and use food for growth and to replace tissue, or process other substances in the body.
Example
The liver helps to metabolize toxins.
C1 adjective ˈmer.ɪt beɪst

merit-based

Meaning
Based on or determined by individual merit, ability, or achievement rather than other factors.
Example
Merit-based recruitment strengthens the workforce.
C1 adjective /ˌmaɪ.krəˈskɑː.pɪk/

microscopic

Meaning
Extremely small and only visible with a microscope.
Example
The sample contained microscopic particles.
C1 noun /ˈmæntl̩/

mantle

Meaning
A cloak or covering; also the layer of the earth between the crust and the core.
Example
The leader assumed the mantle of responsibility.
C1 verb /ˈmɑːrʃəl/

marshal

Meaning
To arrange or organize people, events, or resources in an orderly way.
Example
The teacher marshaled the students for the field trip.
C1 noun /ˈmɜːrdʒər/

merger

Meaning
The combination of two or more companies into a single entity.
Example
The merger of the two firms created the largest bank in the region.
C1 adjective /moʊˈmentəs/

Momentous

Meaning
of great importance or significance; having far-reaching consequences
Example
The signing of the peace treaty was a momentous occasion for both countries.
C1 noun /mɒnˈtɑːʒ/

montage

Meaning
A sequence of film editing or a composite image made by combining several separate pictures.
Example
The film opened with a montage of city life.
C1 noun /ˈmɛrɪɡoʊld/

Marigold

Meaning
a bright orange or yellow flower of the daisy family, often used in gardens and ceremonies
Example
The vibrant marigold flowers added a splash of color to the festival decorations.
C1 adjective /məˈtɪk.jə.ləs/

meticulous

Meaning
Extremely careful and precise in attention to detail
Example
A meticulous researcher checks every detail before publishing.
C1 noun /ˈmɑːrtər/

Martyr

Meaning
A person who is killed because of their religious or political beliefs
Example
He became a martyr for the cause of freedom and democracy.
C1 noun /ˈmɑːrtərdəm/

Martyrdom

Meaning
The suffering of death on account of adherence to a cause or principle
Example
His martyrdom inspired countless others to join the freedom movement.
C1 noun /ˈmɒnəˌlɒɡ/

monologue

Meaning
A long speech by one person, often in a play or performance.
Example
The actor delivered a powerful monologue on stage.
C1 adjective /ˈmaɪzərli/

miserly

Meaning
Unwilling to spend money; stingy.
Example
She lived a miserly life, refusing to buy anything new.
C1 adjective ˌmiː.ti.ər.əˈlɒdʒ.ɪ.kəl

meteorological

Meaning
Relating to weather conditions and atmospheric phenomena.
Example
Meteorological conditions affect farming cycles.
C1 noun /ˈmædʒɪstreɪt/

magistrate

Meaning
A civil officer who administers the law, often with limited judicial authority.
Example
The magistrate presided over the minor criminal case.
C1 noun /ˌmɪdˈsʌm.ər/

midsummer

Meaning
The middle of summer, often around the summer solstice in June.
Example
We had a festival to celebrate midsummer.
C1 adjective, verb /muːt/

moot

Meaning
Adjective: subject to debate or irrelevant. Verb: to suggest an idea for discussion.
Example
The issue of funding became a moot point after the project was canceled.
C1 adjective /məˈlaɪn/

Malign

Meaning
evil in nature or effect; harmful; slanderous
Example
He spread malign rumors about his colleague.
C1 adverb /ˌmæθəˈmætɪkli/

mathematically

Meaning
in a way that relates to mathematics; using numbers, formulas, or logical calculation
Example
The problem can be solved mathematically rather than by guesswork.
C1 noun /ˌmæn.ɪ.fɛsˈteɪ.ʃən/

manifestation

Meaning
A visible form or expression of an idea, concept, or feeling; the action of displaying or showing.
Example
His generosity was a manifestation of his kind nature.
C1 noun /məˈrɑːl/

Morale

Meaning
the confidence, enthusiasm, and discipline of a person or group
Example
The team's morale improved after the victory.
C1 verb /ˈmʌd.əl/

muddle

Meaning
to mix things up in a confused way or to make a mess of something
Example
He muddled the papers and couldn’t find the report.
C1 adjective /ˈmɔːrn.fəl/

mournful

Meaning
feeling, expressing, or causing sadness or grief
Example
The mournful song reminded her of lost loved ones.
C1 verb /ˈmɪŋɡl/

mingle

Meaning
to mix or combine; to move among people and engage socially
Example
Guests mingled at the party, chatting and laughing together.
C1 adjective /ˌmel.ənˈkɒl.ɪk/

Melancholic

Meaning
sad and thoughtful; feeling or expressing sadness
Example
The melancholic music made everyone feel sad.
C1 noun /ˈmeɪniæk/

maniac

Meaning
a person who behaves in a wildly foolish, dangerous, or violent way
Example
The driver was speeding like a maniac.
C1 adverb /ˈmerɪli/

Merrily

Meaning
in a cheerful and joyful manner
Example
The children played merrily in the garden.
C1 noun /ˈmʌs.tərd siːdz/

Mustard seeds

Meaning
small round seeds from the mustard plant, used as a spice and for making mustard condiment
Example
Mustard seeds are often tempered in hot oil to release their nutty flavor before adding to dishes.
C1 verb /ˈməʊbɪlaɪz/

mobilize

Meaning
to organize or prepare people or resources for action
Example
The leader worked hard to mobilize the community for the protest.
C1 adjective /ˈmɜː.sɪ.fəl/

Merciful

Meaning
showing compassion or forgiveness; kind and forgiving
Example
The merciful judge gave him a lighter sentence.
C1 adjective /ˈmæn.əd/

mannered

Meaning
Having or showing a particular manner, especially an artificial or affected one.
Example
The actor’s performance was too mannered to feel natural.
C1 noun /mɜːrθ/

mirth

Meaning
Great joy, amusement, or laughter.
Example
The festival was full of mirth and laughter.
C1 verb /ˈmʌtər/

mutter

Meaning
to speak in a low or barely audible voice, often in dissatisfaction or irritation
Example
He muttered something under his breath as he walked away.
C1 noun /ˈmɔːr.ɡɪʤ/

Mortgage

Meaning
a legal agreement by which a bank lends money to buy property
Example
They took out a mortgage to buy their first house.
C1 noun ˌmɛtə ˈmɔːfəsɪs

metamorphosis

Meaning
A change of the form or nature of a thing or person into a completely different one, by natural or supernatural means.
Example
The company's metamorphosis from a small startup to a global leader was remarkable.
C1 verb /ˌmɪsˌrɛprɪˈzɛnt/

misrepresent

Meaning
to give a false or misleading account of something
Example
The lawyer accused the witness of trying to misrepresent the facts.
C1 noun /məˈtɪəriəlɪzəm/

Materialism

Meaning
A tendency to consider material possessions more important than spiritual values
Example
The rise of materialism in modern society concerns many philosophers.
C1 adjective, noun /ˈmɑːrʃən/

martian

Meaning
Related to the planet Mars; or an imaginary being from Mars.
Example
The movie showed a Martian visiting Earth.
C1 verb, noun /miˈændər/

meander

Meaning
to wander aimlessly or follow a winding course
Example
We meandered through the old streets of the city.
C1 noun /ˈmoʊldɪŋ/

molding

Meaning
A decorative strip or design, often used on walls, ceilings, or furniture.
Example
The wooden molding gave the room a classic look.
C1 noun /miːlˈjuː/

milieu

Meaning
A person's social environment or surroundings.
Example
She grew up in an artistic milieu.
C1 noun ˌmɪt.ɪˈɡeɪ.ʃən

mitigation

Meaning
The action of reducing the severity, seriousness, or painfulness of something.
Example
Mitigation of climate change requires collective effort.