mongrel
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C2 noun /ˈmʌŋɡrəl/

mongrel

雑種犬
Meaning
A dog of mixed breed; sometimes used to describe something mixed or of inferior quality.
Example
The stray dog was a friendly mongrel.
その野良犬は友好的な雑種犬だった。
C1 adverb /ˈmɪdweɪ/

Midway

中途; 真ん中で
Meaning
halfway; at or to the middle point
Example
The project is midway through completion.
プロジェクトは完了に向かってミッドウェイにあります。
C1 noun /mɒb/

Mob

暴徒; 暴力的に行動するグループ
Meaning
a large crowd of people; a group that acts in a violent way
Example
An angry mob gathered outside the building.
怒った暴徒が建物の外に集まった。
B2 noun /ˈmɑːr.tɪn/

Martin

ツバメ
Meaning
small swift-flying bird that catches insects on the wing
Example
The martin built its nest under the bridge.
ツバメは橋の下に巣を作りました。
C1 verb, noun /mʊər/

moor

係留する / 荒れ地
Meaning
As a verb: to tie a ship so that it stays in place. As a noun: open, uncultivated land.
Example
The sailors moored the ship at the dock.
水夫たちは船をドックに停泊させました。
C2 adjective /ˈmɒθ ˌiːtən/

moth-eaten

虫に食べられた
Meaning
Damaged or worn out, especially by moths or age.
Example
He wore a moth-eaten sweater on the cold day.
彼は寒い日に虫に食べられたセーターを着ていた。
C2 noun /ˌmɪsæprɪˈhɛnʃən/

misapprehension

誤解
Meaning
a mistaken belief or misunderstanding
Example
There is a common misapprehension about the causes of the disease.
病気の原因についての一般的な誤解がある。
B2 noun /ˈmæm.əl/

mammal

哺乳類
Meaning
A warm-blooded animal with hair or fur, and females produce milk for their young.
Example
The whale is the largest mammal on Earth.
クジラは地球上で最も大きな哺乳類です。
A1 title /mɪz/

ms

ミズ
Meaning
a title used before a woman's name, regardless of marital status
Example
Ms. Akter will give a speech at the seminar.
ミズ・アクターはセミナーでスピーチを行います。
A2 adjective /ˈmɛsi/

messy

散らかった
Meaning
untidy or dirty; disorganized or chaotic
Example
His room was so messy that he couldn’t find his keys.
彼の部屋はとても散らかっていて、鍵が見つからなかった。
C1 verb /mɑːr/

mar

台無しにする
Meaning
to spoil or damage the appearance or quality of something
Example
The scratch will mar the beauty of the painting.
その傷は絵画の美しさを台無しにする。
C2 adjective /ˈmɛtrɪkəl/

metrical

韻律の
Meaning
Relating to or composed in a regular rhythmic pattern of beats or meter, especially in poetry.
Example
The poet carefully followed metrical rules in his verses.
詩人は自分の詩の中でメトリカルなルールを慎重に守った。
A2 adjective /ˈmoʊbaɪl/

mobile

モバイル
Meaning
Able to move or be moved easily; also refers to portable communication devices.
Example
She prefers a mobile lifestyle that allows her to travel frequently.
彼女は頻繁に旅行できるモバイルライフスタイルを好みます。
C2 adjective /ˌmælˈoʊdərəs/

malodorous

悪臭の
Meaning
Having a very unpleasant smell.
Example
The malodorous room made everyone leave quickly.
悪臭の部屋はみんなを急いで出させた。
C2 adjective /ˌmɛtəˈlɜrdʒɪkəl/

metallurgical

冶金の
Meaning
Relating to metallurgy or the branch of science concerned with the properties of metals and their production.
Example
He studied metallurgical engineering at the university.
彼は大学で冶金工学を学びました。
B2 noun ˈmɪdl klæs

middle-class

中産階級
Meaning
The social group between the upper and working classes, typically consisting of well-educated people.
Example
The middle-class was largely affected by the decision.
中産階級はその決定によって大きな影響を受けました。
B2 adverb /ˈmiːn.taɪm/

Meantime

その間に
Meaning
during the time between two events; in the period of time between now and when something else happens
Example
The food will be ready in an hour; in the meantime, we can watch TV.
食べ物は1時間後に準備が整います。その間にテレビを見ていましょう。
B2 noun /məˈskiː.toʊ net/

Mosquito-net

蚊帳
Meaning
a fine mesh fabric used to cover beds or windows to keep mosquitoes and other insects out
Example
We use a mosquito net to protect ourselves from insect bites.
私たちは虫刺されを防ぐために蚊帳を使います。
C1 noun /ˈmaɪkrəʊˌklaɪmæt/

microclimate

ミクロクライメート
Meaning
The climate of a small, specific area that may differ from the general climate of the surrounding region, often influenced by local factors like terrain, vegetation, or buildings.
Example
A microclimate can have a significant impact on plant growth.
マイクロクライメートは植物の成長に重要な影響を与える可能性があります。
A1 pronoun /maɪ/

my

私の
Meaning
used to indicate possession or ownership
Example
This is my book.
これは私の本です。
C1 adjective ˈmer.ɪt beɪst

merit-based

実力主義
Meaning
Based on or determined by individual merit, ability, or achievement rather than other factors.
Example
Merit-based recruitment strengthens the workforce.
実力主義の採用は労働力を強化します。
A2 noun /ˈmædʒɪk/

magic

魔法
Meaning
the use of mysterious or supernatural powers to influence events
Example
The magician amazed the crowd with his magic.
マジシャンは彼のマジックで観客を驚かせました。
C2 verb /məˈmɔːriəlaɪz/

memorialize

記念する
Meaning
to preserve the memory of a person or event, often through a ceremony, monument, or record
Example
The city decided to memorialize the hero with a statue in the central square.
その都市は中央広場に英雄の像を立てて英雄を記念することに決めました。
B2 adjective /ˈmæn.ju.əl/

Manual

手動
Meaning
done by hand; operated by hand; not automatic
Example
This is a manual process that requires careful attention.
これは手動プロセスで、慎重な注意が必要です。
C2 verb /ˈmæɡnɪtaɪz/

magnetize

磁化する
Meaning
to make something magnetic or to strongly attract
Example
The scientist managed to magnetize the iron rod.
科学者は鉄の棒を磁化することに成功した。
A1 noun /mɑːrtʃ/

March

行進
Meaning
An act of walking in a regular measured tread; a protest demonstration
Example
The soldiers performed a ceremonial march in front of the palace.
兵士たちは宮殿の前で式典的な行進を行いました。
B1 adjective /ˈmæsɪv/

Massive

巨大な; 非常に大きい; サイズや量で巨大な
Meaning
extremely large; huge in size or amount
Example
The company made a massive profit this year.
その会社は今年、巨大な利益を上げました。
B2 verb /ˈmɒdənaɪz/

modernize

近代化する
Meaning
To adapt something to modern needs or styles; to update or improve.
Example
The company plans to modernize its IT infrastructure.
その会社はITインフラを近代化する計画です。
C1 adjective/noun nɪˈmɒn.ɪk

mnemonic

記憶術、記憶を助ける技術
Meaning
Assisting or intended to assist memory; a device or technique to aid memory.
Example
A mnemonic device helps students remember complex concepts.
ニーモニック装置は学生が複雑な概念を覚えるのに役立ちます。
A2 noun /maɪl/

mile

マイル
Meaning
a unit of distance equal to 1,609.34 meters; a long distance figuratively
Example
She walked a mile to reach the bus stop.
彼女はバス停に着くために1マイル歩いた。
C2 verb /ˈmæŋɡəl/

mangle

ひどく壊す
Meaning
to severely damage or mutilate something, often by tearing or crushing
Example
The car was mangled in the accident.
車は事故でひどく壊れた。
C1 noun /ˈmælədi/

Malady

病気; 疾患; 重大な問題
Meaning
A disease or ailment; a serious problem
Example
The doctor diagnosed a rare malady that affected her nervous system.
医者は神経系に影響を与えた珍しい病気を診断しました。
C1 noun /ˈmædʒɪstreɪt/

magistrate

裁判官
Meaning
A civil officer who administers the law, often with limited judicial authority.
Example
The magistrate presided over the minor criminal case.
裁判官は軽犯罪の事件を審理しました。
C1 noun ˌmɛməraɪˈzeɪʃən

memorization

暗記
Meaning
The process of learning or committing something to memory
Example
Memorization of important information is crucial for exams.
重要な情報の暗記は試験において重要です。
B2 noun məˈmɔːriəl

memorial

記念碑
Meaning
A structure or building made to remind people of a person or event.
Example
Thousands gather at the National Memorial.
何千人もの人々が国立記念碑に集まります。
C1 adjective /ˈmaɪndləs/

mindless

無意味な
Meaning
without thought or intelligence; done without consideration
Example
He was bored by the mindless tasks at work.
彼は仕事の中で無意味な作業に退屈していた。
C2 adjective /mæɡˈnɪləkwənt/

magniloquent

誇張した言葉
Meaning
using high-flown or pompous language
Example
The politician’s magniloquent speech impressed the crowd.
その政治家の誇張したスピーチは群衆に印象を与えた。
B1 adjective /ˈmen.təl/

Mental

精神的な
Meaning
relating to the mind; intellectual; psychological
Example
She has strong mental health and resilience.
彼女は強いメンタルヘルスと回復力を持っています。
B2 adjective /ˈmɪstʃɪvəs/

Mischievous

いたずらな; おてんばな; わんぱくな
Meaning
playfully naughty; causing minor trouble; impish
Example
The mischievous child hid his sister's favorite toy.
いたずらな子供が姉のお気に入りのおもちゃを隠した。
C2 adjective /ˌmækɪəˈvɛliən/

machiavellian

陰謀的で計略的、特に政治や自分のキャリアを進めるために倫理を無視する
Meaning
cunning, scheming, and unscrupulous, especially in politics or in advancing one's career
Example
The politician was known for his Machiavellian tactics.
その政治家はマキャヴェリアンな戦術で知られていた。
A2 noun ˈmuːv.mənts

movements

運動
Meaning
Organized efforts by groups of people working together to advance their shared political, social, or artistic ideas.
Example
Freedom movements paved the way for independence.
自由運動は独立への道を切り開いた。
B2 verb /mɜːrdʒ/

merge

統合する
Meaning
to combine or join together; to blend into one
Example
The two companies decided to merge to increase their market share.
2つの会社は市場シェアを増やすために合併することを決定しました。
C1 noun ˌmek.ə.naɪˈzeɪ.ʃən

mechanization

機械化
Meaning
The process of introducing machines or replacing manual labor with machines.
Example
Mechanization has revolutionized agriculture.
機械化は農業に革命をもたらした。
C2 noun /meɪs/

Mase

ナツメグの花
Meaning
spice obtained from the reddish seed covering of the nutmeg seed
Example
A pinch of mace adds warmth to the dessert.
一 pinch ナツメグの花 デザートに温かみを加える。
C1 verb (past) /ˈmɛrɪtɪd/

merited

価値がある
Meaning
Deserved or earned something.
Example
Her dedication merited recognition from the community.
彼女の献身はコミュニティからの認識を得るに値しました。
B2 adjective məˈriːn

marine

海の
Meaning
Of, relating to, or characteristic of the sea; living or growing in the sea.
Example
Marine ecosystems are highly sensitive to human activity.
海洋生態系は人間の活動に非常に敏感です。
C1 noun /mɪˈsɑːdʒəni/

misogyny

女性嫌悪
Meaning
Hatred of, contempt for, or prejudice against women.
Example
The novel has been criticized for promoting misogyny.
その小説は女性嫌悪を助長すると批判された。
C2 adjective /ˌmædʒɪˈstɪəriəl/

magisterial

権威的
Meaning
Having the characteristics of a master or authority; commanding and dignified.
Example
The professor spoke in a magisterial tone during the lecture.
教授は講義中に権威的な口調で話しました。
C2 noun (plural) /maɪˈnjuːʃiiː/

minutiae

細部
Meaning
the small, precise, or trivial details of something
Example
The lawyer focused on the minutiae of the contract.
弁護士は契約の細部に集中しました。
C2 verb /ˌmɪsˈleɪ/

mislay

一時的に失う
Meaning
to lose something temporarily by putting it in the wrong place
Example
I must have mislaid my keys somewhere in the house.
私は家のどこかで鍵を一時的に失ったに違いない。
C2 verb /ˌmɪsəˈproʊpriˌeɪt/

misappropriate

不正流用する
Meaning
to use something dishonestly or illegally for one's own purposes
Example
He was accused of misappropriating company funds.
彼は会社の資金を不正に流用したとして告発されました。
B1 noun /ˈmʌðər ˈlæŋɡwɪdʒ/

mother language

母語
Meaning
the first language a person learns from childhood; native language
Example
Children learn best when they are taught in their mother language.
子どもは母語で学ぶと最もよく理解する。
B2 noun /menˈtæləti/

Mentality

メンタリティ; 思考方法
Meaning
The characteristic attitude of mind or way of thinking of a person or group
Example
The team needs to develop a winning mentality to succeed.
チームは成功するために勝者のメンタリティを発展させる必要がある。
C2 verb /ˌmæn.juˈmɪt/

manumit

奴隷解放
Meaning
to release from slavery or servitude; to set free
Example
The landowner decided to manumit his slaves.
地主は奴隷を解放することに決めました。
C1 noun /ˈmeɪniæk/

maniac

マニア
Meaning
a person who behaves in a wildly foolish, dangerous, or violent way
Example
The driver was speeding like a maniac.
運転手はマニアのようにスピードを出していた。
C1 verb /mæʃ/

mash

潰す
Meaning
to crush or mix food into a soft mass, usually by pressing or beating
Example
She mashed the potatoes before serving dinner.
彼女は夕食を出す前にジャガイモを潰した。
C1 verb /məˈnuː.vər/

manoeuver

Meaning
To move skillfully or carefully; to guide or manipulate into a desired position.
Example
The driver skillfully manoeuvered the car through the narrow street.
C1 adjective ˌmiː.ti.ər.əˈlɒdʒ.ɪ.kəl

meteorological

気象の
Meaning
Relating to weather conditions and atmospheric phenomena.
Example
Meteorological conditions affect farming cycles.
気象条件は農業サイクルに影響を及ぼす。
C1 noun /ˈmjuːtɪni/

mutiny

反乱
Meaning
an open rebellion against authority, especially by soldiers or sailors
Example
The sailors staged a mutiny against their captain.
船員たちはキャプテンに対して反乱を起こした。
B1 noun /ˈmeʒərmənt/

measurement

測定
Meaning
the size, length, or amount of something, as determined by measuring
Example
The tailor took my waist measurement before stitching the suit.
仕立て屋はスーツを縫う前に私のウエストの測定を取りました。
C1 noun /ˈmʌf.lər/

Muffler

マフラー
Meaning
a long strip of cloth worn around the neck for warmth
Example
She wrapped a warm muffler around her neck before going outside.
彼女は外に出る前に暖かいマフラーを首に巻いた。
B1 noun /mʌd/

mud

泥
Meaning
soft, wet earth or soil
Example
The children were playing in the mud after the rain.
子供たちは雨の後で泥遊びをしていました。
B2 noun /ˌmænjəˈfæktʃərər/

manufacturer

製造業者
Meaning
A person or company that makes goods in large quantities.
Example
The manufacturer produces cars for the global market.
製造業者はグローバル市場向けに車を生産しています。
C1 verb /ˌmɪsˈriːd/

misread

誤って読む
Meaning
to read something incorrectly or interpret wrongly
Example
He misread the instructions and built the shelf incorrectly.
彼は指示を誤読して棚を間違って作った。
B2 noun ˈmoʊ.baɪl sɪˈkjʊr.ə.ti

mobile security

モバイルセキュリティ
Meaning
Protection of mobile devices and the data stored on them from security threats.
Example
Strong mobile security protects personal information.
強力なモバイルセキュリティは個人情報を保護します。
C1 noun /ˈmɜːrsəˌnɛri/

mercenary

傭兵
Meaning
a professional soldier hired to serve in a foreign army; also used to describe someone motivated solely by money.
Example
The mercenary fought for whoever paid the highest wage.
傭兵は最も高い給料を支払った人のために戦った。
C2 noun /miːd/

mead

ミード酒
Meaning
An alcoholic drink made from fermented honey and water.
Example
The Vikings were known to drink large amounts of mead during feasts.
ヴァイキングは宴会で大量のミードを飲むことで知られていました。
B2 adverb /ˈmɪzərəbli/

Miserably

悲惨に
Meaning
in a wretched or unhappy manner; extremely badly
Example
The team performed miserably in the championship.
チームはチャンピオンシップで悲惨にプレーしました。
B1 noun /miːnz/

Means

手段; 資源; 方法;
Meaning
An action or system by which a result is achieved; financial resources
Example
They don't have the means to afford such an expensive vacation.
彼らにはそんなに高価な休暇を支払う手段がありません。
C2 noun /mɪlk raɪs/

Milk rice

おかゆ
Meaning
A sweet dessert made from rice cooked with milk and sugar
Example
My grandmother makes delicious milk rice for special occasions.
私の祖母は特別な機会においしいミルクライスを作ります。
B2 noun /maɪˈnɔːr.ɪ.ti/

minority

少数派
Meaning
A smaller number or part, especially a group differing from the majority.
Example
The law aims to protect the rights of ethnic minorities.
この法律は、民族的少数派の権利を保護することを目的としています。
C1 noun /ˈmaɪzər/

miser

けちん坊
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.
その古いけちん坊は慈善団体に1ペニーも寄付することを拒否した。
C1 adjective /ˈmʌðərli/

Motherly

母性的
Meaning
having qualities characteristic of a mother; caring and protective
Example
She showed motherly care and affection towards all the children.
彼女はすべての子供たちに母親のようなケアと愛情を示しました。
B2 noun /mɒsk/

mosque

モスク
Meaning
A Muslim place of worship.
Example
They gathered at the mosque for the Friday prayer.
彼らは金曜日の祈りのためにモスクに集まりました。
C1 noun /maɪm/

Mime

パントマイム; パントマイムの俳優
Meaning
A performer who acts without words, using only gestures and body movements
Example
The street mime entertained the crowd with his invisible box routine.
ストリートマイムは、見えない箱のルーチンで群衆を楽しませました。
B2 noun /ˌmɪsbɪˈheɪvjər/

misbehavior

不正行為
Meaning
bad or improper behavior
Example
The teacher punished the student for his misbehavior.
教師は彼の不正行為で生徒を罰しました。
C2 noun /məˈlæsɪz/

Molasses

モラセス
Meaning
thick, dark, sweet syrup made from sugar cane
Example
The recipe calls for molasses to give the bread a rich flavor.
レシピは、パンにリッチな味を加えるためにモラセスを要求します。
A2 interjection /mˈhm/

mm-hmm

はい
Meaning
A sound used to express agreement or acknowledgment in conversation.
Example
‘Do you understand?’ ‘Mm-hmm.’
‘分かりますか?’ ‘はい.’
C2 noun /moʊˈtɪləti/

motility

運動性
Meaning
The ability of an organism or cell to move independently.
Example
The motility of sperm is crucial for successful fertilization.
精子の運動性は受精成功のために重要です。
C2 noun /məˈdɒn.ə/

madonna

マドンナ (聖母マリア)
Meaning
An artistic representation of the Virgin Mary; also used as a respectful form of address for a woman in Italian culture.
Example
The Renaissance painting depicts a Madonna holding child Jesus.
ルネサンスの絵画は、イエスの子供を抱いているマドンナを描いています。
C1 noun /ˈmɒdɪfaɪər/

modifier

修飾語
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'.
「very cold」という句では、「very」は「cold」を修飾する語です。
B2 verb /ˈmeməraɪz/

memorize

暗記する
Meaning
to learn something by heart; to commit to memory
Example
Students need to memorize important formulas for the exam.
学生は試験のために重要な公式を覚える必要があります。
B2 noun /ˈmʌð.ər.lænd/

Motherland

母国; 出身地
Meaning
the country where one was born or has citizenship; homeland
Example
He always spoke fondly of his motherland.
彼はいつも自分の母国について愛情を込めて話していました。
B2 noun /ˈmɜːrtʃənt/

merchant

商人
Meaning
a person or company involved in the trade of goods, especially in large quantities
Example
The merchant sold spices from distant lands.
商人は遠くの土地から香辛料を売っていた。
B2 noun /ˌmɛθəˈdɑlədʒi/

methodology

方法論
Meaning
A system of methods used in a particular area of study or activity.
Example
The research was conducted using a new methodology.
その研究は新しいメソドロジーを使って行われました。
C2 noun /mɪˈsænθrəpi/

misanthropy

人類嫌悪
Meaning
a general dislike, distrust, or hatred of humankind
Example
His misanthropy was evident in the way he avoided people.
彼の人類嫌悪は、彼が人々を避ける方法に明らかに現れていました。
C2 noun /mɪˈsɑːɡəmi/

misogamy

ミソガミー
Meaning
Hatred or dislike of marriage.
Example
His misogamy prevented him from ever settling down with a partner.
彼のミソガミーは、パートナーと一緒に落ち着くことを妨げた。
C2 noun /mælˈfiːzəns/

malfeasance

公務員の不正行為
Meaning
Wrongdoing or misconduct, especially by a public official.
Example
The mayor was accused of malfeasance in office.
市長は職務中の不正行為で告発された。
B2 noun /mɪθ/

myth

神話
Meaning
A traditional story explaining natural or social phenomena, often involving supernatural beings; a widely held but false belief.
Example
The myth of the phoenix tells of a bird reborn from its ashes.
フェニックスの神話は、灰の中から生まれ変わった鳥の話を伝えています。
C2 noun /ˌmɛtəˈfɪzɪks/

metaphysics

形而上学
Meaning
The branch of philosophy that deals with the fundamental nature of reality, existence, and the relationship between mind and matter.
Example
She studied metaphysics to understand the principles of existence beyond physical science.
彼女は物理学を超えた存在の原理を理解するために形而上学を学びました。
C1 noun/adjective /ˈmɒnəkrəʊm/

monochrome

モノクローム
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.
その古い映画は完全にモノクロームで撮影されました。
A1 verb /mʌst/

must

しなければならない
Meaning
to be required or obligated to
Example
You must complete your homework before you go out.
あなたは外出する前に宿題を終わらせなければなりません。
C2 adjective /ˈmʌɡi/

muggy

蒸し暑くて湿気のある
Meaning
uncomfortably warm and humid
Example
It was a muggy afternoon in July.
7月の午後は蒸し暑かった。
C2 adjective /mjuːˈnɪfɪsənt/

munificent

寛大な
Meaning
extremely generous; giving freely and abundantly
Example
She made a munificent donation to the orphanage.
彼女は孤児院に寛大な寄付をしました。
C1 adjective /məˈtɜːrnəl/

Maternal

母性的; 母親に関する
Meaning
relating to a mother; motherly
Example
She showed maternal care towards the orphan child.
彼女は孤児に対して母性的なケアを示しました。
C2 adjective /ˈmiːliˌmaʊðd/

mealymouthed

言い逃れをする
Meaning
not willing to speak directly and honestly; evasive in speech
Example
The politician gave a mealymouthed response to the tough question.
その政治家は難しい質問に対して言い逃れをした。
C1 noun /ˈmɔː.tər ænd ˈpes.əl/

Mortar and Pestle

モルタルと乳鉢
Meaning
a bowl and grinding tool used to crush and grind spices, herbs, and other substances
Example
She ground the spices using a mortar and pestle.
彼女はモルタルと乳鉢を使って香辛料を挽いた。
A2 adjective ˈmed.ɪ.kəl

medical

医学的
Meaning
Relating to the practice of medicine or the treatment of illness and injuries.
Example
Medical education has improved significantly.
医学教育は大幅に改善されました。
A1 noun /mɑːm/

mom

ママ
Meaning
an informal word for mother
Example
My mom makes the best homemade food.
私のママは一番美味しい手作り料理を作る。
C1 adjective məˈdʒes.tɪk

Majestic

壮大な
Meaning
Having impressive beauty, dignity, or grandeur; regal and stately in appearance.
Example
The majestic Himalayas stand tall against the sky.
壮大なヒマラヤ山脈は空に向かって高くそびえ立っています。
B1 noun /mæs/

mass

質量
Meaning
a large body of matter with no specific shape; a large number of people or things
Example
A huge mass of people gathered in the square.
広場に大勢の人々が集まりました。
C2 noun /ˌmæskəˈreɪd/

masquerade

人々が仮面と衣装を着て集まるパーティー
Meaning
a party or gathering where people wear masks and costumes; a false outward show
Example
The charity event was held as a grand masquerade.
チャリティイベントは大きなマスカレードとして開催されました。
B2 noun /ˈmɒdjuːl/

module

モジュール
Meaning
a self-contained unit of a course or system, typically part of a larger whole
Example
The module on machine learning was difficult but informative.
機械学習のモジュールは難しかったが、情報が豊富だった。
C1 noun mælˈnʌr.ɪʃ.mənt

malnourishment

栄養失調
Meaning
Lack of proper nutrition, caused by not having enough to eat, not eating enough of the right things, or being unable to use the food that one does eat.
Example
Children in poverty-stricken areas suffer from malnourishment.
貧困地域の子供たちは栄養失調に苦しんでいます。
B2 adjective /mɪˈsteɪkən/

mistaken

間違った
Meaning
wrong or incorrect because of an error in judgment or understanding
Example
I was mistaken about the meeting time.
私は会議の時間を間違えていました。
C1 noun /ˈmɔːr.ɡɪʤ/

Mortgage

住宅ローン
Meaning
a legal agreement by which a bank lends money to buy property
Example
They took out a mortgage to buy their first house.
彼らは最初の家を買うために住宅ローンを組みました。
C1 adjective /ˌmiː.diˈoʊ.kər/

mediocre

平凡
Meaning
Of only average quality; not very good.
Example
The movie was entertaining but overall mediocre.
その映画は面白かったが、全体的に平凡だった。
C1 noun /mɑːrʃ/

Marsh

湿地
Meaning
An area of low-lying land that is flooded in wet seasons or at high tide
Example
The endangered birds built their nests in the protected marsh.
絶滅危惧種の鳥は保護された湿地に巣を作った。
C2 verb /ˈmɪlɪˌteɪt/

militate

妨げる
Meaning
to have a strong effect against something; to work as a powerful factor in preventing or influencing an outcome
Example
His lack of experience will militate against his promotion.
彼の経験不足が昇進に対して障害となるだろう。
C1 noun /ˈmelənkəli/

Melancholy

メランコリー; 思索的または優しい悲しみ
Meaning
A feeling of pensive sadness; thoughtful or gentle sadness
Example
A deep melancholy settled over him after reading the old letters.
古い手紙を読んだ後、彼は深いメランコリーに包まれました。
B2 noun /mɪnt/

Mint

ミント; 金貨の鋳造所
Meaning
An aromatic plant used for flavoring; also a place where money is manufactured
Example
She added fresh mint leaves to the tea for a refreshing taste.
彼女はお茶に新鮮なミントの葉を加えて、さわやかな味を加えました。
C1 adjective /ˈmɔːtəl/

Mortal

死すべき運命; 限られた寿命の; 人間
Meaning
subject to death; having a limited lifespan; human
Example
All human beings are mortal and will eventually die.
すべての人間は死すべき運命にあり、最終的に死ぬ。
B1 noun /məˈkænɪk/

mechanic

メカニック
Meaning
a person who repairs and maintains machines or vehicles
Example
The mechanic fixed the engine in less than an hour.
そのメカニックは1時間以内にエンジンを修理しました。
C1 noun /moʊld/

Mould

型（鋳型）
Meaning
a hollow container used to give shape to molten material; fungus
Example
She poured chocolate into the mould to make candies.
彼女はキャンディーを作るために型にチョコレートを流し込んだ。
C1 noun /ˈmiːnnəs/

Meanness

意地悪; ケチ
Meaning
The quality of being unkind, spiteful, or unfair; stinginess
Example
His meanness towards the poor children shocked everyone in the neighborhood.
貧しい子供たちに対する彼の意地悪は、近所の誰もが驚きました。
C1 adjective /mʌnˈdeɪn/

mundane

平凡
Meaning
lacking interest or excitement; dull and ordinary
Example
She tried to escape her mundane routine by traveling.
彼女は旅行をして平凡な日常から逃げようとした。
C2 verb /ˌmɪskənˈsiːv/

misconceive

誤解する
Meaning
To misunderstand or form an incorrect idea about something.
Example
He misconceived the purpose of the project.
彼はプロジェクトの目的を誤解しました。
C2 noun /məˈræs/

morass

複雑な状況
Meaning
A complicated or confused situation; a swampy or boggy ground.
Example
The project got stuck in a bureaucratic morass.
そのプロジェクトは官僚主義の沼に嵌ってしまった。
C2 noun /moʊt/

mote

微粒
Meaning
A tiny particle or speck, especially of dust.
Example
A mote of dust floated in the sunlight.
ほこりの微粒が日光の中で浮かんでいた。
A2 adjective /meɪn/

main

主要な
Meaning
most important; chief in size, extent, or importance
Example
The main reason for his success is hard work.
彼の成功の主な理由は、努力したことです。
A2 noun /ˈmoʊ.tər ˌsaɪ.kəl/

Motor Cycle

バイク
Meaning
a two-wheeled vehicle powered by an engine
Example
He rides his motorcycle to work every day.
彼は毎日バイクで仕事に行きます。