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A1 adverb /nɒt/

not

いいえ
Meaning
used to make a word or phrase negative
Example
I do not like spicy food.
私は辛い食べ物が好きではありません。
C2 noun /ˌniːoʊˈdɑːrwɪnɪzəm/

neo-darwinism

ネオダーウィニズム
Meaning
A modern interpretation of Darwin's theory of evolution, integrating genetics and natural selection.
Example
Neo-Darwinism combines Darwin’s theory of natural selection with modern genetics.
ネオダーウィニズムはダーウィンの自然選択説と現代遺伝学を組み合わせています。
C2 noun /ˈneɪdɪər/

nadir

Meaning
The lowest point of a situation or condition.
Example
The company reached its nadir during the financial crisis.
C1 adjective /ˈnjuː.ɑːnst/

nuanced

微妙な
Meaning
Characterized by subtle shades of meaning or expression; having fine gradations of meaning, tone, or feeling.
Example
His analysis of the novel was highly nuanced.
彼の小説の分析は非常に微妙でした。
C1 adjective /ˈneɡ.lɪ.dʒə.bəl/

Negligible

無視できる
Meaning
so small or unimportant as to be not worth considering; insignificant
Example
The side effects of this medicine are negligible.
この薬の副作用は無視できるほどです。
C1 noun njuːˈtræl.ə.ti

neutrality

中立
Meaning
The state of not supporting or helping either side in a conflict, disagreement, etc.; impartiality.
Example
Neutrality fosters trust in decision-making.
中立は意思決定において信頼を育みます。
C2 noun /naɪt kwiːn/

Night queen

月下香
Meaning
a fragrant white flower that blooms at night and releases strong sweet scent
Example
The night queen flowers filled the garden with their sweet fragrance.
月下香の花が甘い香りで庭を満たしました。
B2 noun, adjective, adverb /ˌnɔːrθˈwest/

northwest

北西
Meaning
the direction that is between north and west; situated in or moving toward this direction
Example
Seattle is located in the northwest of the United States.
シアトルはアメリカ合衆国の北西部にあります。
B1 adjective /ˈnɔːðərn/

northern

北部の
Meaning
relating to the north or situated in the north
Example
The northern part of the country is known for its cold climate.
その国の北部は寒冷な気候で知られています。
C2 noun /ˈnɪn.i/

Ninny

バカ
Meaning
a silly or foolish person; someone who lacks common sense
Example
Don't be such a ninny, use your brain!
そんなバカなことをするな、頭を使え！
C1 noun /ˈnɑːrsɪsɪst/

narcissist

ナルシシスト
Meaning
A person who has an excessive interest in or admiration of themselves.
Example
Everyone avoided him because he was a narcissist.
みんな彼を避けていた、なぜなら彼はナルシシストだったから。
A2 adjective /ˈnæʃənəl/

national

国民の
Meaning
relating to a nation, especially its culture, language, or government
Example
The national anthem was played at the ceremony.
国歌は式典で演奏されました。
B2 noun /nɒsˈtæl.dʒə/

nostalgia

ノスタルジア
Meaning
A sentimental longing for the past, typically for a period or place with happy personal associations.
Example
Listening to old songs fills me with nostalgia.
古い歌を聞くと、ノスタルジアで満たされます。
B2 adjective /ˈnjuː.mər.əs/

Numerous

多数の; たくさんの; 豊富な
Meaning
existing in large numbers; many; abundant
Example
There are numerous benefits to exercising regularly.
定期的な運動には数多くの利点があります。
C2 adjective /ˈnjuːbaɪl/

nubile

未婚女性
Meaning
of a young woman, sexually mature and suitable for marriage
Example
The village was celebrating the festival with its nubile maidens dancing.
村はその未婚女性たちが踊る祭りを祝っていました。
B1 adjective /ˈnær.oʊ/

Narrow

狭い; 限定された; 狭まった
Meaning
having a small width; thin; limited in scope; restricted
Example
The narrow street was barely wide enough for two cars.
その狭い道は2台の車が通るにはほとんど十分な広さがありませんでした。
C2 noun /nɪb/

nib

ペン先
Meaning
the pointed end of a pen used for writing or drawing
Example
He dipped the nib into the ink before writing.
彼は書く前にペン先をインクに浸しました。
C2 noun /niːp/

neap

小潮
Meaning
A tide just after the first or third quarters of the moon when the difference between high and low tide is least.
Example
During a neap tide, the water level change is minimal.
ニープタイドの間、水位の変化は最小限です。
A1 noun /nɔːrθ/

north

北
Meaning
the direction toward the top of a map or the opposite of south
Example
We traveled north to reach the mountains.
私たちは山に到達するために北へ向かって旅しました。
B2 adjective /ˌnɒnˈprɒfɪt/

nonprofit

非営利団体
Meaning
an organization that does not aim to make a profit, often serving a social or charitable purpose.
Example
She works for a nonprofit organization that helps children.
彼女は子供たちを助ける非営利団体で働いています。
C2 noun /nɛˈkroʊsɪs/

necrosis

壊死
Meaning
the death of body tissue due to disease, injury, or lack of blood supply
Example
The doctor explained that the patient’s wound showed signs of necrosis.
医師は、患者の傷が壊死の兆候を示していると説明しました。
C1 verb /nɪˈɡeɪt/

negate

Meaning
To cancel out or make ineffective; to deny the truth of something.
Example
The new evidence will negate the claims made earlier.
C1 adjective /ˈnɒnʃələnt/

nonchalant

Meaning
Appearing calm, casual, and unconcerned.
Example
He gave a nonchalant shrug and walked away.
C1 adjective /nɪˈɡoʊ.ʃi.ə.bəl/

negotiable

交渉可能
Meaning
Open to discussion or modification; capable of being bargained for.
Example
The salary offered is negotiable.
提供された給与は交渉可能です。
B1 noun /ˈnaɪt.meər/

Nightmare

悪夢
Meaning
a frightening or unpleasant dream; a very unpleasant experience
Example
The exam was a complete nightmare for unprepared students.
試験は準備不足の学生にとって完全な悪夢でした。
A2 noun /ˈnefjuː/

nephew

甥
Meaning
the son of one’s brother or sister
Example
My nephew is studying at the university.
私の甥は大学で勉強しています。
C2 noun /ˈnɛkrəˌmænsi/

necromancy

死霊術
Meaning
the practice of communicating with the dead, often to predict the future
Example
Ancient texts described rituals of necromancy performed by priests.
古代の文献には、神父たちによって行われた死霊術の儀式が記述されています。
C2 noun /ˈnʌnəri/

nunnery

修道院
Meaning
A convent or building where nuns live and work.
Example
She decided to join the nunnery to devote her life to spiritual practice.
彼女は精神的な実践に人生を捧げるために修道院に参加することを決めました。
C1 noun /ˈnoʊmæd/

nomad

ノマド
Meaning
A person who has no permanent home and moves from place to place.
Example
The desert was once home to nomads who lived by herding animals.
砂漠はかつて動物を飼うことで生きていたノマドの家だった。
A2 adverb /ˈnoʊwɛr/

Nowhere

どこにも
Meaning
not anywhere; in no place
Example
I searched everywhere but the keys were nowhere to be found.
私はあらゆる場所を探しましたが、鍵はどこにも見つかりませんでした。
A2 adjective /ˈnɔɪ.zi/

Noisy

騒々しい
Meaning
making a lot of loud or unpleasant sound; clamorous
Example
The noisy construction work outside made it difficult to concentrate.
外の騒々しい建設作業で集中するのが難しかった。
B2 noun; adjective /ˌnɒnˈprɒfɪt/

non-profit

非営利の
Meaning
an organization that does not operate for profit and reinvests surplus to achieve social goals; not intended to make financial profit
Example
She works for a non-profit that provides free education to underprivileged children.
彼女は無料教育を提供する非営利団体で働いています。
C2 adjective /ˈneɪtl/

natal

出生に関連する
Meaning
Relating to birth or the place of birth.
Example
She returned to her natal village after many years.
彼女は何年も経った後、故郷の村に帰りました。
C1 noun ˌnæʃ.ən.ə.laɪˈzeɪ.ʃən

nationalization

国有化
Meaning
The process of a government taking control of private property or industry.
Example
The nationalization of banks was aimed at stabilizing the economy.
銀行の国有化は経済の安定を目指して行われました。
C1 noun /ˈnʌt.meg/

Nut meg

ナツメグ
Meaning
a spice made from the seed of the fruit of an evergreen tree, used in cooking and baking
Example
The recipe called for a teaspoon of ground nutmeg to flavor the custard.
レシピにはカスタードに風味を加えるために、小さじ1杯のナツメグが必要でした。
A2 adjective ˈnesəseri

necessary

必要
Meaning
Required to be done, achieved, or present; essential.
Example
Strict regulations are necessary for maintaining order.
厳格な規制は秩序を維持するために必要です。
C1 adjective /nəʊˈmæd.ɪk/

nomadic

遊牧
Meaning
Living the life of a nomad; wandering from place to place without a fixed home.
Example
The tribe led a nomadic lifestyle.
部族はノマディックなライフスタイルを送っていた。
B2 noun /ˈnuː.səns/

Nuisance

迷惑; 不便;
Meaning
a person, thing, or circumstance causing inconvenience or annoyance
Example
The constant noise from construction is a real nuisance.
建設の絶え間ない騒音は本当の迷惑です。
C2 verb /ˌnɒnˈplʌst/

nonplussed

困惑
Meaning
Past tense of nonplus; surprised and unsure how to react.
Example
He stood nonplussed at the strange remark.
彼は奇妙なコメントに困惑して立ち尽くしていた。
C1 noun /ˈneɡ.lɪ.dʒəns/

Negligence

過失
Meaning
failure to take proper care in doing something; carelessness
Example
The accident was caused by driver negligence.
事故は運転手の不注意によって引き起こされました。
C2 adjective /ˈnɔɪ.səm/

Noisome

不快な臭い; 有害または不快な
Meaning
having an extremely offensive smell; harmful or unpleasant
Example
The noisome smell from the garbage made everyone cover their noses.
ゴミからの不快な臭いが、みんなを鼻を押さえさせました。
B2 noun /ˌnoʊtɪfɪˈkeɪʃənz/

notifications

通知
Meaning
A notice or announcement, especially an official one.
Example
Turn off notifications to stay focused.
通知をオフにして集中を保つ。
A2 pronoun /ˈnoʊˌbɑːdi/

nobody

誰もいない
Meaning
no person; not anyone
Example
Nobody came to the party.
誰もパーティに来なかった。
C2 adjective /ˌnɒnkəˈmɪtl̩/

noncommittal

Meaning
Not expressing or showing a clear opinion, decision, or commitment.
Example
She gave a noncommittal reply when asked about her future plans.
A2 noun /ˈnæpkɪn/

napkin

ナプキン
Meaning
a piece of cloth or paper used to wipe the mouth and hands while eating
Example
She placed a napkin on her lap before eating.
彼女は食事の前に膝の上にナプキンを置きました。
A2 noun /nek/

Neck

首
Meaning
the part of the body connecting the head to the shoulders
Example
She wore a beautiful necklace around her neck.
彼女は首に美しいネックレスをしていた。
B1 noun /nɛt/

net

網
Meaning
a piece of material made of threads or ropes woven together, used to catch or hold things
Example
The fisherman cast his net into the sea.
漁師は網を海に投げた。
C2 noun /ˌnɒvəˈlɛt/

novellette

小説
Meaning
A short novel or long short story.
Example
The author published a novellette as a preview of her upcoming series.
作者は彼女の次のシリーズのプレビューとして小説を発表しました。
B2 adjective /ˈnuːkliər/

nuclear

原子力
Meaning
relating to the nucleus of an atom or to nuclear energy
Example
The country is developing nuclear energy.
その国は原子力エネルギーを開発しています。
C1 noun /njʊəˈrəʊ.sɪs/

neurosis

神経症
Meaning
A relatively mild mental illness that is not caused by organic disease, involving symptoms of stress.
Example
His neurosis made social interactions difficult.
彼の神経症は社会的な相互作用を困難にした。
A2 noun /ˈneɪbər/

neighbor

隣人
Meaning
a person living next door or nearby
Example
My neighbor lent me some sugar when I ran out.
私の隣人は私が砂糖がなくなった時、砂糖を貸してくれました。
B1 adjective /ˈneɪtɪv/

native

ネイティブ
Meaning
Belonging to a person by birth; originating in a particular place.
Example
He is a native speaker of Bengali.
彼はベンガル語のネイティブスピーカーです。
A2 adjective /ˈnɔːti/

naughty

いたずら
Meaning
Disobedient or mischievous, often in a playful or mildly bad way.
Example
The naughty child drew on the walls with crayons.
いたずらな子供がクレヨンで壁に絵を描きました。
B2 noun /ˈnæreɪtər/

narrator

語り手
Meaning
A person who tells the story in a book, play, or film.
Example
The narrator guided the audience through the complex plot.
語り手は複雑なプロットを通じて観客を導きました。
B2 adjective, adverb /ˈneɪʃənˌwaɪd/

nationwide

全国規模
Meaning
existing or happening throughout an entire nation
Example
The campaign received nationwide support.
キャンペーンは全国的な支持を得ました。
C1 noun /ˈnaɪ.tɪŋ.ɡeɪl/

Nightingale

ナイチンゲール
Meaning
small songbird known for its beautiful singing, especially at night
Example
The nightingale sang sweetly in the moonlight.
ナイチンゲールは月明かりの中で甘美に歌った。
C2 noun /nɪt/

nit

シラミの卵
Meaning
The egg or young form of a louse or other parasitic insect.
Example
The teacher noticed nits in the child’s hair.
先生は子供の髪の毛にシラミの卵を見つけました。
A1 verb /niːd/

need

必要
Meaning
to require something; to be in want of
Example
I need help with my homework.
私は宿題に助けが必要です。
A1 adverb /nɪər/

Near

近い
Meaning
close in space or time; almost
Example
The school is very near to my house.
学校は私の家の近くにあります。
B1 noun /ˌnæʃəˈnæləti/

nationality

国籍
Meaning
The status of belonging to a particular nation, either by birth or naturalization.
Example
Her nationality is Canadian, though she was born in France.
彼女の国籍はカナダのもので、フランスで生まれました。
C1 noun /noʊz rɪŋ/

Nose ring

鼻リング
Meaning
a piece of jewelry worn through a piercing in the nose
Example
She got a small gold nose ring for her birthday.
彼女は誕生日に小さな金の鼻リングをもらった。
A2 adverb /ˈnaʊədeɪz/

Now-a-days

今どき; 現在
Meaning
at the present time; in these times
Example
Now-a-days, people prefer online shopping.
現在、人々はオンラインショッピングを好む。
C1 adjective /ˌnɒn ɪɡˈzɪstənt/

non-existent

存在しない
Meaning
not real or not present; lacking existence
Example
The supposed evidence turned out to be non-existent.
仮定された証拠は存在しないことが判明しました。
C1 noun /naɪˈiːvteɪ/

naivete

Meaning
The quality of being naive; lack of experience, wisdom, or judgment.
Example
His naivete made him an easy target for manipulation.
B1 noun /nuːn/

noon

正午
Meaning
12 o'clock in the daytime; midday
Example
The meeting will start at noon.
会議は正午に始まります。
C1 adjective /ˈnæs.ənt/

nascent

発展途上の
Meaning
Emerging, developing, or in the early stages of formation
Example
The nascent technology is revolutionizing industries.
発展途上の技術が産業を革新しています。
C1 noun /ˈnjuːtrɪənt dɪˈfɪʃənsi/

nutrient deficiency

栄養不足
Meaning
A lack of essential nutrients required for healthy plant growth, which can result in poor crop development, reduced yields, and increased susceptibility to diseases.
Example
Nutrient deficiency in the soil can reduce crop productivity.
土壌中の栄養不足は作物の生産性を減少させる可能性があります。
B2 noun /ˌnəʊtɪfɪˈkeɪʃən/

notification

通知
Meaning
an official or formal notice or message informing someone of something; an alert delivered by a system or device
Example
You will receive a notification when your application is approved.
申請が承認されると通知が届きます。
C2 noun /ˌnɒn ˈsɛkwɪtər/

non sequitur

論理的に関連しない発言
Meaning
a statement or conclusion that does not logically follow from the previous statement
Example
His comment about the weather was a complete non sequitur during the budget discussion.
予算の議論中、彼の天気に関するコメントは完全に論理的に関連しない発言だった。
A2 adjective /niːt/

Neat

きれいで整理された; よく整理された; 丁寧に作られた
Meaning
clean and tidy; well-organized; carefully done
Example
Her room is always neat and organized.
彼女の部屋はいつもきれいで整理整頓されています。
B2 adjective /njuːˈmɛrɪkəl/

numerical

数値的
Meaning
relating to or expressed in numbers
Example
The report provides numerical data on population growth.
その報告書は人口増加に関する数値データを提供しています。
A2 conjunction /ˈniːðər/

neither

どちらも〜ない
Meaning
used to connect two negative alternatives
Example
Neither the manager nor the assistant could attend the meeting.
マネージャーもアシスタントも会議に出席できなかった。
B1 adverb /ˌnesəˈserəli/

Necessarily

必然的に; 必ずしも;
Meaning
as a necessary result; inevitably; by logical consequence
Example
Rich people are not necessarily happy.
裕福な人々は必ずしも幸せではありません。
B2 adjective /ˈneɪvəl/

naval

海軍の
Meaning
relating to a country's navy or military ships
Example
The country invested heavily in naval defense.
その国は海軍防衛に多額の投資をしました。
B1 adverb /ˈnætʃərəli/

Naturally

自然に
Meaning
in a natural manner; as expected; of course
Example
She naturally excels in mathematics.
彼女は数学で自然に優れている。
C2 noun /niːˈɒkrəsi/

neocracy

未熟なまたは新しい官僚によって運営される政府
Meaning
A government or leadership run by inexperienced or new officials.
Example
The sudden revolution led to a neocracy with inexperienced leaders.
突然の革命は未経験のリーダーたちによるネオクラシーを生み出した。
B2 noun ˈnɒv.əl.ti

novelty

新規性
Meaning
The quality of being new, original, or unusual; a new or unfamiliar thing or experience.
Example
The novelty of the invention attracted investors.
発明の新規性が投資家を引き付けました。
B2 adjective /ˈniː.di/

Needy

困窮した; 貧しい; 必要がある
Meaning
requiring help or support; poor; lacking basic necessities
Example
The charity helps needy families during the winter.
チャリティは冬に困窮している家族を助けます。
C1 noun /ˈnɒs.trɪl/

Nostril

鼻孔
Meaning
either of the two openings in the nose through which air passes
Example
The doctor checked each nostril for any blockage.
医師は鼻孔のそれぞれをブロックがないか調べました。
C2 noun /nɪˈkrɒlədʒi/

necrology

訃報
Meaning
An obituary notice or a list of people who have recently died.
Example
The newspaper published a necrology of notable figures who passed away that year.
その新聞は、その年に亡くなった著名な人物のネクロロジーを発表しました。
C1 verb /ˈnɪbəl/

nibble

かじる
Meaning
to take small bites of food
Example
The rabbit nibbled on a carrot.
うさぎはにんじんをかじった。
B2 verb /nɪˈɡoʊ.ʃi.eɪt/

negotiate

交渉する
Meaning
To discuss something formally in order to reach an agreement.
Example
They negotiated a fair deal with the supplier.
彼らはサプライヤーと公平な取引を交渉した。
C2 noun /ˈnoʊmənˌkleɪtʃər/

nomenclature

命名法
Meaning
A system of names or terms used in a particular science, art, or field.
Example
The chemical nomenclature can be difficult for beginners to understand.
化学的命名法は初心者には理解するのが難しい場合があります。
B2 noun /ˌnɔːrθˈiːst/

northeast

北東
Meaning
the direction between north and east; a region or area located in that direction.
Example
The storm is moving toward the northeast.
嵐は北東に向かって進んでいます。
B2 adjective /naɪˈiːv/

naive

無邪気
Meaning
Having a lack of experience or sophistication; overly innocent or trusting.
Example
She was naive to believe the scammer’s story.
彼女は詐欺師の話を信じるには無邪気すぎた。
C1 adjective /ˌnjʊə.rəˈlɒdʒ.ɪ.kəl/

neurological

神経学的
Meaning
Relating to the anatomy, functions, and organic disorders of nerves and the nervous system.
Example
Meditation has positive neurological effects on mental health.
瞑想は精神的健康に対して積極的な神経学的影響を与えます。
C1 noun /ˈnɛkˌlaɪn/

neckline

ネックライン
Meaning
the edge of a garment around the neck, especially as cut to form a particular shape
Example
The dress has a beautiful V-shaped neckline.
そのドレスには美しいV字型のネックラインがあります。
C1 noun /ˌnjʊə.roʊ.plæˈstɪs.ɪ.ti/

neuroplasticity

神経可塑性
Meaning
The brain's ability to reorganize itself by forming new neural connections throughout life.
Example
Neuroplasticity allows the brain to rewire itself after an injury.
ニューロプラスティシティは、脳が怪我の後で再配線できるようにします。
C2 noun /naɪˈdʒel.ə/

Nigella

ブラッククミン
Meaning
small black seeds with a nutty, slightly bitter flavor, also known as black cumin or black seed
Example
Sprinkle nigella seeds on top of the bread before baking.
パンの上にブラッククミンの種を振りかけてから焼きます。
C1 adjective /nɑːkˈtɜr.nəl/

Nocturnal

夜行性
Meaning
active at night; happening during the night
Example
Owls are nocturnal animals that hunt at night.
フクロウは夜行性の動物で、夜に狩りをします。
C1 verb /ˈnʌlɪfaɪ/

nullify

無効にする
Meaning
to make something legally invalid or ineffective
Example
The court decided to nullify the contract.
裁判所は契約を無効にすることを決定しました。
A1 adverb /ˈnɛvər/

never

決して
Meaning
at no time in the past or future; not ever
Example
I have never seen such a beautiful sunset.
私はこんなに美しい夕日を決して見たことがありません。
C2 noun /nəˈkrɒpəlɪs/

necropolis

古代の墓地
Meaning
a large ancient cemetery with elaborate tombs
Example
The archaeologists discovered artifacts in the necropolis of the ancient city.
考古学者たちは古代都市のネクロポリスで遺物を発見しました。
B2 adjective /ˈnær.ə.tɪv/

Narrative

物語的な; 描写的な; 物語を語る
Meaning
relating to storytelling; descriptive; telling a story; recounting events
Example
The narrative structure of the novel was quite complex.
その小説の物語的な構造はかなり複雑でした。
B2 verb /nɪˈɡlekt/

neglect

無視する
Meaning
to fail to care for or give attention to something
Example
Don't neglect your health while studying.
勉強中に健康を無視しないでください。
C1 noun /ˈnoʊ.və/

Nova

新星
Meaning
a star that suddenly increases greatly in brightness
Example
Astronomers discovered a new nova in the constellation.
天文学者たちは星座で新しいノヴァを発見しました。
B2 noun ˈnætʃərəl ˈhæbɪtæt

Natural Habitat

自然の生息地
Meaning
The natural environment where organisms live and fulfill their life needs.
Example
Protecting the natural habitat is crucial for butterflies.
蝶々のために自然の生息地を守ることが重要です。
B2 adverb /ˈneɪmli/

Namely

すなわち; 特に;
Meaning
that is to say; specifically; to be precise
Example
Three cities, namely Paris, London, and Rome, were visited.
三つの都市、すなわちパリ、ロンドン、ローマが訪問されました。
B2 noun /ˈnæʃənəl ˈænθəm/

national anthem

国歌
Meaning
an official patriotic song of a country, performed at national events and ceremonies
Example
The national anthem was played before the international match.
国際試合の前に国歌が演奏された。
C2 adjective /ˈnæti/

natty

おしゃれ
Meaning
Neat, stylish, and fashionable in appearance.
Example
He looked very natty in his new suit.
彼は新しいスーツでとてもおしゃれに見えた。
B2 noun /ˈnoʊ.ʃən/

Notion

概念
Meaning
a conception or belief about something; an idea or opinion
Example
She had a strange notion that someone was following her.
彼女は誰かが彼女を追っているという奇妙な概念を持っていた。
B2 noun /ˈnæp.kɪn/

Nap Kin

ナプキン
Meaning
a piece of cloth or paper used for wiping the mouth and hands while eating
Example
She placed the napkin on her lap before starting dinner.
彼女は夕食を始める前に、膝の上にナプキンを置きました。
C2 adjective /ˈnjuː.trɪ.tɪv/

nutritive

栄養のある
Meaning
Relating to nutrition; having nourishing qualities.
Example
The nutritive value of the fruit is very high.
果物の栄養価は非常に高いです。
C1 noun /naɪˈiːvɪti/

naivety

無邪気
Meaning
The quality of being innocent, simple, and lacking experience or sophistication.
Example
Her naivety made her trust people too easily.
彼女の無邪気は、彼女が人々をあまりにも簡単に信頼させました。
A1 pronoun /ˈnʌθɪŋ/

nothing

何もない
Meaning
not anything; no thing
Example
She has nothing to worry about.
彼女は心配することは何もない。
C2 noun /ˈnɒn.ɪʤ/

Nonage

未成年
Meaning
the period of being under the legal age of majority; youth or immaturity
Example
During his nonage, all legal decisions were made by his guardian.
彼が未成年であった間、すべての法的決定は保護者によって下された。
A2 adverb /ˈnɔːməli/

Normally

通常
Meaning
in the usual way; under normal circumstances
Example
I normally wake up at 7 AM every day.
私は通常毎日午前7時に起きます。
C2 noun /njʊˈrældʒə/

neuralgia

神経痛
Meaning
intense, often intermittent pain along a nerve pathway
Example
The patient suffers from neuralgia in her face.
患者は顔に神経痛を抱えています。
C1 adjective /ˈnɪp.i/

Nippy

寒い; ひんやり; 動きが速くて敏捷
Meaning
cold; chilly; quick and agile in movement
Example
It's quite nippy outside today, you should wear a jacket.
今日は外がかなり寒いので、ジャケットを着るべきです。
A2 noun ˈneɪ.tʃər

nature

自然。性格。
Meaning
The basic or inherent features of something, especially when seen as characteristic of it.
Example
The calm nature of the environment helps healing.
環境の穏やかな性質は癒しを助けます。
B2 adjective /ˈnoʊtɪsəbl/

noticeable

顕著な
Meaning
Easily seen, observed, or recognized.
Example
There was a noticeable improvement in her performance.
彼女のパフォーマンスには顕著な改善がありました。
C1 noun ˌnæn.oʊ.tekˈnɒl.ə.dʒi

nanotechnology

ナノテクノロジー
Meaning
The branch of technology that deals with dimensions and tolerances of less than 100 nanometers.
Example
Nanotechnology is advancing medical treatments.
ナノテクノロジーは医療治療の進歩を促進しています。
C1 noun /nɑːrˈkɒtɪk/

narcotic

麻薬
Meaning
A drug that dulls the senses and relieves pain, often causing sleep and sometimes addiction.
Example
The police seized a large amount of narcotic substances.
警察は大量の麻薬を押収した。
C1 adjective /ˈnɔɪz.ləs/

Noiseless

無音の; 完全に静かな
Meaning
making no sound; completely silent
Example
She moved through the house in noiseless steps so as not to wake the baby.
彼女は赤ちゃんを起こさないように、無音で家の中を歩きました。
C2 noun /ˈnoʊzˌɡeɪ/

nosegay

花束
Meaning
a small bunch of flowers, typically given as a gift or carried for decoration
Example
She carried a nosegay of fresh roses to the ceremony.
彼女は式典に新鮮なバラの花束を持って行った。
C2 adjective ˌnjʊə.rəʊ.saɪənˈtɪ.fɪk

neuroscientific

神経科学的
Meaning
Related to the scientific study of the brain and nervous system.
Example
Neuroscientific research helps understand memory retention.
ニューロサイエンティフィックな研究は、記憶の保持を理解するのに役立ちます。
B1 noun/adjective /ˈnɒvəl/

novel

小説 / 新しい
Meaning
A long fictional narrative; also something new or unusual.
Example
She spent the weekend reading a historical novel.
彼女は週末に歴史小説を読んで過ごしました。
C1 noun /niːʃ/

Niche

市場のニッチ、専門分野、ターゲット市場
Meaning
A specialized segment of the market for a particular kind of product or service.
Example
Finding the right niche is key to a successful business.
適切なニッチを見つけることが、成功するビジネスの鍵です。
C2 verb /ˈnɔːzieɪt/

nauseate

吐き気を催す
Meaning
To make someone feel sick, with an inclination to vomit.
Example
The spoiled food nauseated him quickly.
腐った食べ物は彼をすぐに吐き気を催させました。
C2 noun /ˌnjuːməˈreɪʃən/

numeration

数え方
Meaning
the action or process of counting or assigning numbers
Example
The teacher explained the basics of numeration to the students.
先生は学生たちに数え方の基本を説明しました。
C1 noun /ˈnɛktəriːn/

nectarine

ネクタリン (滑らかな皮の桃の一種)
Meaning
A smooth-skinned variety of peach.
Example
She bought a basket of fresh nectarines from the market.
彼女は市場から新鮮なネクタリンのバスケットを買いました。