B2 noun ɪnˈtɛɡrɪti

integrity

誠実

Meaning

The quality of being honest and having strong moral principles; moral uprightness.

Example

Teachers' integrity fosters a positive learning environment.

教師のインテグリティは、積極的な学習環境を促進します。

C1 noun /ɪmˈbæl.əns/

Imbalance

不均衡

Meaning

lack of proportion or relation between corresponding things; unequal distribution

Example

The doctor said the patient's dizziness was caused by an inner ear imbalance.

医者は患者のめまいが内耳の不均衡によって引き起こされたと言いました。

B1 adjective /ˌɪmpəˈlaɪt/

impolite

無礼

Meaning

Not showing good manners; rude.

Example

It is impolite to interrupt someone while they are speaking.

誰かが話しているときに邪魔をするのは失礼です。

B2 noun ɪˈlɪtərəsi

illiteracy

識字率の低さ

Meaning

The inability to read and write; lack of education or knowledge in a particular area.

Example

Illiteracy often leads to poverty and unemployment.

識字率の低さは貧困や失業を引き起こすことがよくあります。

C2 adjective /ˌɪnˈekspɜːrt/

inexpert

未熟な

Meaning

not skilled or experienced; lacking expertise

Example

The inexpert handling of the machine caused several mistakes.

機械の未熟な扱いがいくつかのミスを引き起こした。

C1 verb /ɪnˈfrɪndʒ/

infringe

侵害する

Meaning

To actively break the terms of a law, agreement, or right.

Example

Copying this software without permission will infringe copyright laws.

許可なくこのソフトウェアをコピーすると著作権法を侵害することになります。

A1 noun /aɪs/

Ice

氷

Meaning

water that has frozen and become solid

Example

The ice in my drink melted quickly in the hot weather.

私の飲み物の氷は暑い天気で素早く溶けました。

A2 preposition /ɪnˈkluːdɪŋ/

including

含む

Meaning

used to show that someone or something is part of a larger group

Example

Many people attended the event, including students and teachers.

多くの人々がイベントに参加しました、学生や教師を含む。

C2 adjective /ɪnˈvaɪələbl/

inviolable

侵害できない

Meaning

never to be broken, dishonored, or violated

Example

Human rights are considered inviolable in modern democracies.

人権は現代の民主主義において侵害できないと見なされています。

B2 verb /ɪnˈdʒɛkt/

inject

注射する

Meaning

To introduce a substance, especially a drug, into the body using a needle.

Example

The nurse will inject the vaccine into the patient's arm.

看護師は患者の腕にワクチンを注射します。

C1 adjective /ɪnˈsɒlvənt/

insolvent

破産

Meaning

unable to pay debts owed

Example

The insolvent firm could not meet its financial obligations.

破産した企業は財務義務を果たせなかった。

A2 verb /ɪˈmædʒɪn/

imagine

想像する

Meaning

to form a mental image of; to believe something unreal to be true

Example

Can you imagine living in a different country?

あなたは違う国に住むことを想像できますか？

B2 noun /ˌɪnstəˈbɪləti/

instability

不安定

Meaning

lack of stability or balance; tendency to change, fail, or collapse easily

Example

Political instability has slowed economic growth in the region.

政治的な不安定さが地域の経済成長を遅らせた。

C1 adjective /ɪnˈflɛksəbl/

inflexible

柔軟性がない

Meaning

Not able to bend or change; unwilling to change ideas or behavior.

Example

His inflexible attitude made negotiations difficult.

彼の柔軟性がない態度は交渉を難しくしました。

C1 adjective /ɪmˈpoʊzɪŋ/

imposing

威圧的な

Meaning

having an appearance that is grand, impressive, or commanding

Example

The castle is an imposing structure overlooking the valley.

その城は谷を見下ろす威圧的な構造です。

B1 noun ˈɪn.də.stri

industry

産業

Meaning

Economic activity concerned with the processing of raw materials and manufacture of goods in factories.

Example

The industry focuses on luxury experiences.

産業は高級体験に焦点を合わせています。

B2 verb /ɪmˈpoʊz/

impose

課す

Meaning

to force someone to accept something; to establish or apply by authority

Example

The government imposed new taxes on luxury goods.

政府は高級品に新しい税を課した。

B2 noun /ˈɪnstɪŋkt/

instinct

本能

Meaning

A natural way of behaving or reacting that does not require learning.

Example

Birds build nests by instinct.

鳥は本能で巣を作ります。

B1 adjective /ɪmˈpruːvd/

improved

改善された

Meaning

made better or enhanced in quality or condition

Example

Her health has significantly improved since last month.

彼女の健康は先月から大きく改善されました。

A1 noun /ˈɪntənet/

internet

グローバルコンピュータネットワーク

Meaning

A global computer network providing a variety of information and communication facilities.

Example

The internet has revolutionized the way we access information.

インターネットは情報へのアクセス方法を革新しました。

C1 noun /ˈɪnkjʊˌbeɪtər/

incubator

インキュベーター

Meaning

a device or environment that provides suitable conditions for eggs, cells, or infants to develop

Example

The premature baby was placed in an incubator for care.

未熟児はケアのためにインキュベーターに入れられました。

B1 noun /ɪˌmædʒ.ɪˈneɪ.ʃən/

Imagination

想像力; 創造的思考

Meaning

the faculty or action of forming new ideas or images not present to the senses; creative thinking

Example

Children's imagination allows them to turn a cardboard box into a spaceship or castle.

子供たちのイマジネーションは、段ボール箱を宇宙船やお城に変えることを可能にします。

C1 noun /ˈɪtʃ.i.nəs/

itchiness

かゆみ

Meaning

The quality or condition of feeling an irritating sensation on the skin that causes a desire to scratch.

Example

Eye itchiness often leads to rubbing.

目のかゆみはしばしば擦る原因となります。

C1 noun /ˈɪnkwest/

inquest

調査

Meaning

A legal or official inquiry, especially into the cause of a death.

Example

The inquest revealed the cause of the accident.

調査は事故の原因を明らかにしました。

C2 noun /ˌɪmprɪˈkeɪʃən/

imprecation

呪い

Meaning

A spoken curse or expression of strong condemnation.

Example

The angry crowd hurled imprecations at the corrupt official.

怒った群衆は腐敗した役人に呪いを投げかけた。

C2 adjective /ˌaɪdəˈlɑːtrɪəs/

idolatrious

偶像崇拝的な

Meaning

Excessively devoted or reverent towards idols or false gods.

Example

The ancient tribe was known for its idolatrious practices.

その古代の部族は偶像崇拝的な習慣で知られていました。

B2 adverb /ˌɪndəˈrɛktli/

indirectly

間接的に

Meaning

in a way that is not direct; through an intermediate means or influence

Example

The policy affected small businesses indirectly.

その政策は中小企業に間接的に影響した。

C2 adjective /ˈɪnmoʊst/

inmost

最も内面の

Meaning

Situated at the very heart or deepest part; most private or secret.

Example

She revealed her inmost thoughts to her closest friend.

彼女は最も内面的な考えを最も親しい友達に明かした。

C1 noun /ɪnˈfɜːməri/

infirmary

診療所

Meaning

A hospital or place where the sick or injured are cared for.

Example

The school had an infirmary for minor injuries.

学校には軽傷のための診療所がありました。

C2 verb /ɪnˈtɜːr/

inter

埋葬する

Meaning

To bury a dead body in the ground.

Example

They decided to inter the soldier with full honors.

彼らは兵士を全ての名誉を持って埋葬することに決めた。

B1 noun ɪnˈvestmənt

investment

投資

Meaning

The action or process of investing money for profit or material result.

Example

Investment in waste management infrastructure is essential.

廃棄物管理インフラへの投資は不可欠です。

C2 verb /aɪˈtɪnəˌreɪt/

itinerate

旅行する

Meaning

To travel from place to place, usually for the purpose of work or preaching.

Example

The missionary itinerated throughout the region to spread the message.

伝道師は地域を巡り、メッセージを広めました。

C1 adjective /ɪnˈtɒl.ər.ə.bəl/

Intolerable

耐えられない

Meaning

unable to be endured; extremely unpleasant or painful

Example

The noise from the construction site was intolerable.

工事現場の騒音は耐えられないほどひどかった。

A2 noun /ˈɪn.sekt/

Insect

昆虫

Meaning

a small invertebrate animal with six legs and usually one or two pairs of wings

Example

The butterfly is a beautiful insect that flies from flower to flower.

蝶は花から花へと飛ぶ美しい昆虫です。

C1 adjective /ɪnˈdetɪd/

Indebted

借金がある; 感謝している

Meaning

owing money or gratitude to someone; obligated; grateful

Example

I am deeply indebted to my teacher for all her guidance.

私は先生のすべての指導に深く感謝しています。

C1 adverb /ˌɪn.ədˈvɜːr.tənt.li/

Inadvertently

うっかり; ついうっかり; 誤って

Meaning

without being aware of what you are doing; unintentionally; by mistake

Example

She inadvertently deleted the important file while cleaning her computer.

彼女はコンピュータを掃除しているとき、重要なファイルをうっかり削除してしまった。

B2 noun /ˈɪmɪɡrənt/

immigrant

移民

Meaning

a person who comes to live permanently in a foreign country

Example

The city has welcomed many new immigrants this year.

今年、市は多くの新しい移民を迎えました。

C1 noun ɪmˈpɛə(r)mənt

impairment

損傷、障害

Meaning

The state of being damaged or weakened; a disability or handicap.

Example

Hearing impairment can be caused by long-term exposure to loud noise.

聴力障害は長期間の大きな音への曝露によって引き起こされる可能性があります。

C1 verb /ɪnˈsɪnjueɪt/

insinuate

Meaning

To suggest or hint something indirectly and often unpleasantly.

Example

He insinuated that she had lied about her qualifications.

C1 adjective /ɪˈmeʒərəbəl/

Immeasurable

計り知れない

Meaning

too large or extensive to measure; boundless

Example

The immeasurable love of a mother knows no bounds.

母の計り知れない愛には限界がない。

C1 noun /ɪnˈdjuːsmənt/

inducement

誘因

Meaning

something that persuades or encourages someone to do something

Example

The company offered a bonus as an inducement to employees.

会社は従業員にインセンティブとしてボーナスを提供しました。

B2 noun ˌɪn.təˈven.ʃən

intervention

介入

Meaning

The action or process of intervening; involvement in a situation to improve or help it.

Example

The intervention of the UN was crucial in resolving the conflict.

国連の介入は紛争を解決する上で重要だった。

C1 noun ɪnˌɛv.ɪ.təˈbɪl.ɪ.ti

inevitability

避けられない運命

Meaning

The quality of being certain to happen and impossible to avoid or prevent.

Example

The inevitability of change is a part of life.

変化の避けられないことは人生の一部です。

C1 noun /ɪˌreɡjəˈlærɪti/

irregularity

不規則性

Meaning

lack of regularity or consistency; a deviation from what is normal, expected, or orderly

Example

The audit revealed several financial irregularities in the company’s records.

監査により、その会社の記録にいくつかの財務上の不規則性が明らかになった。

B2 adjective /ɪˈmɒrəl/

immoral

不道徳な

Meaning

Not conforming to accepted standards of morality; unethical or wicked.

Example

He was fired for his immoral behavior.

彼は不道徳な行動で解雇されました。

B1 adjective /ɪˈnɪʃəl/

initial

初期の

Meaning

Existing or occurring at the beginning.

Example

Her initial reaction was one of surprise.

彼女の初期の反応は驚きだった。

C2 adjective /ɪmˈprɛɡnəbl̩/

impregnable

攻略不可能

Meaning

Unable to be captured, broken into, or defeated.

Example

The fortress was considered impregnable by the enemy.

その要塞は敵によって攻略不可能と見なされていました。

B2 adjective /ˌɪnɪˈfɪʃənt/

Inefficient

非効率的

Meaning

not achieving maximum productivity; wasteful of time or resources

Example

The old computer system was inefficient and wasted a lot of time.

古いコンピュータシステムは非効率的で、多くの時間を無駄にしました。

C2 adjective /ɪnˈdɛkərəs/

indecorous

不作法

Meaning

Not in keeping with good taste and propriety; improper.

Example

His indecorous behavior shocked the audience.

彼の不作法な振る舞いは観客を驚かせた。

C1 noun /ˈɪntərˌpleɪ/

interplay

相互作用

Meaning

The way in which two or more things have an effect on each other.

Example

The interplay between culture and technology shapes modern life.

文化と技術の相互作用が現代生活を形作っています。

C2 adjective /ɪmˈpræktɪkəbl/

impracticable

実行不可能

Meaning

Not capable of being carried out or put into practice.

Example

The plan seemed impracticable due to limited resources.

資源が限られていたため、計画は実行不可能に見えました。

C2 noun /ˌɪrɪˈdɛsəns/

iridescence

虹色の輝き

Meaning

a play of lustrous, changing colors like those of a rainbow

Example

The butterfly's wings shimmered with iridescence.

蝶の羽は虹色の輝きで輝いていました。

B1 adjective /ɪnˈkrɛdəbl/

incredible

信じられない

Meaning

so extraordinary that it is hard to believe; amazing

Example

The view from the mountain was incredible.

山からの景色は信じられなかった。

B2 noun /ɪnˈspekʃən/

inspection

検査

Meaning

a careful examination of something, especially to check that it is correct or safe

Example

The building passed the safety inspection last week.

その建物は先週、安全検査に合格しました。

C1 adjective /ɪnˈses.ənt/

incessant

絶え間ない

Meaning

Continuing without pause or interruption; constant.

Example

The incessant noise from the construction site made it hard to concentrate.

建設現場からの絶え間ない騒音は集中するのを困難にしました。

C1 adjective /ˌɪn.səˈbɔːr.dɪ.nət/

insubordinate

命令不服従

Meaning

Defiant of authority; disobedient to orders.

Example

The insubordinate employee refused to follow the manager's instructions.

命令不服従の従業員は、マネージャーの指示に従うことを拒否した。

C2 noun /ɪnˌtɜːrpəˈleɪʃən/

interpolation

補間

Meaning

The act of inserting something into a text or estimating values within a sequence of data.

Example

The scientist used interpolation to predict the missing data points.

科学者は欠落したデータポイントを予測するために補間を使用しました。

C1 adjective ɪnˈdʒiː.ni.əs

ingenious

独創的

Meaning

Showing inventiveness and skill; clever, original, and inventive.

Example

His ingenious ideas transformed modern physics.

彼の独創的なアイデアは現代物理学を変えました。

C1 verb /ˌɪn.trəˈspekt/

introspect

内省する

Meaning

To examine one's own thoughts, feelings, or mental state.

Example

He often introspects before making important decisions.

彼は重要な決定を下す前にしばしば自己分析をします。

B2 adjective ˈaɪsəˌleɪtɪd

isolated

孤立した

Meaning

Alone or separated from others; having little or no contact with other people.

Example

Technological advancements often leave people isolated.

技術の進歩はしばしば人々を孤立させる。

C1 noun /ˌɪnkjʊˈbeɪʃən/

incubation

卵、細胞、または生物を適切な条件で発展させるプロセス

Meaning

the process of keeping eggs, cells, or organisms in the right conditions for development

Example

The incubation of the eggs lasted for three weeks.

卵のインキュベーションは三週間続きました。

B1 adjective ɪnˈdʌs.tri.əl

industrial

工業的な

Meaning

Relating to or characterized by industry.

Example

Industrial sectors boost exports.

工業部門は輸出を促進する。

C1 adjective /ɪˈnɔːɡjərəl/

Inaugural

開幕

Meaning

marking the beginning of something; first; opening

Example

The president delivered his inaugural speech.

大統領は彼の開幕スピーチを行いました。

C2 noun /ˈɪnroʊd/

inroad

進展

Meaning

An advance or significant progress, often at the expense of something else.

Example

The company made significant inroads into the mobile market.

その会社はモバイル市場で重要な進展を遂げました。

C2 adjective /ˌɪrɪˈlɪdʒəs/

irreligious

無宗教

Meaning

Indifferent or hostile to religion

Example

Some people in the community consider him irreligious because he never attends religious services.

コミュニティの中で、彼は宗教的なサービスに一度も参加しないため、無宗教だと考えられています。

B2 noun /ˈɪm.pʌls/

Impulse

衝動; 突然の欲求

Meaning

a sudden strong and unreflective urge or desire to act; a driving force or motivation

Example

She bought the expensive dress on impulse and later regretted the purchase.

彼女は衝動で高価なドレスを買い、後でその購入を後悔しました。

C2 adjective /ˈɪn.dɪ.dʒənt/

indigent

困窮

Meaning

lacking the necessities of life due to poverty; very poor

Example

The hospital offers free care to indigent patients.

病院は困窮した患者に無料でケアを提供しています。

B2 verb /ɪˈnɪʃieɪt/

initiate

開始する

Meaning

to begin or start; to introduce someone to a new activity

Example

The company will initiate a new training program.

会社は新しい研修プログラムを開始します。

B2 verb /ˈɪntɪɡreɪt/

integrate

統合する

Meaning

To combine or bring together into a unified whole.

Example

The new system integrates data from multiple sources.

新しいシステムは複数のソースからデータを統合します。

B2 verb /ɪnˈhæbɪt/

inhabit

住む

Meaning

to live in; to occupy as a dwelling

Example

Many animals inhabit the forest.

多くの動物が森に住んでいます。

C1 adjective /ˌɪn.ɪˈfɛk.tʃu.əl/

ineffectual

効果がない

Meaning

Not producing any or the desired effect; lacking the ability or qualities to achieve a purpose.

Example

The manager’s ineffectual leadership caused the team to lose motivation.

マネージャーの効果がないリーダーシップは、チームがモチベーションを失う原因となった。

C1 adjective /ɪmˈprɒmp.tjuː/

impromptu

即興

Meaning

Done without being planned, organized, or rehearsed; spontaneous.

Example

He gave an impromptu speech at the event.

彼はイベントで即興のスピーチを行いました。

B2 verb ɪmˈpoʊz

imposes

課す

Meaning

To establish or apply by authority; to force something unwelcome or unfamiliar to be accepted or put in place.

Example

Pollution imposes harmful effects on the environment.

汚染は環境に有害な影響を課します。

C1 verb /ɪnˈfjʊərieɪt/

infuriate

激怒させる

Meaning

To make someone extremely angry.

Example

His careless remarks infuriated the entire team.

彼の不注意な発言がチーム全体を怒らせた。

C1 noun /ˈɪn.fən.tri/

Infantry

歩兵

Meaning

soldiers marching or fighting on foot; foot soldiers collectively

Example

The infantry advanced across the battlefield on foot.

歩兵は戦場を徒歩で進んだ。

C1 noun /ɪnˈdem.nə.ti/

Indemnity

補償

Meaning

security or protection against a loss or other financial burden; compensation for damage or loss

Example

The insurance company provided full indemnity for the damages caused by the flood.

保険会社は洪水による損害に対して完全な補償を提供しました。

B2 adjective /ɪnˈtriːɡɪŋ/

intriguing

非常に興味深く、異常な; 好奇心を引き起こす

Meaning

very interesting and unusual; arousing curiosity

Example

The movie has an intriguing plot that keeps the audience hooked.

その映画は観客を引き付ける非常に興味深いプロットを持っています。

B2 adjective /ˌɪnkənˈviːniənt/

Inconvenient

不便な; 面倒な; 困難な

Meaning

causing trouble, difficulties, or discomfort; awkward; troublesome

Example

The broken elevator made it inconvenient to reach the top floor.

壊れたエレベーターは、最上階に到達するのを不便にしました。

C1 adjective /ɪmˈpɜːrviəs/

impervious

透過しない

Meaning

Not allowing fluid to pass through; unable to be affected by something.

Example

The jacket is impervious to rain.

ジャケットは雨に透過しません。

C1 adjective /ɪˈlʌstriəs/

illustrious

著名

Meaning

Well known, respected, and admired for past achievements.

Example

She had an illustrious career in medicine.

彼女は医学の分野で著名なキャリアを持っていた。

B2 verb /ɪnˈtɛnsɪfaɪ/

intensify

強化する

Meaning

To make something stronger, more extreme, or more forceful.

Example

The storm is expected to intensify overnight.

嵐は夜通し強くなると予想されています。

C1 adjective /ɪnˈvɪnsəbl/

invincible

無敵

Meaning

too powerful to be defeated or overcome

Example

The team seemed invincible after winning ten matches in a row.

そのチームは10試合連続で勝利した後、無敵に見えた。

C1 noun /ɪnˈhɛrɪtər/

inheritor

相続人

Meaning

a person who receives money, property, or a title when someone dies

Example

She became the inheritor of her family's estate.

彼女は家族の財産の相続人となった。

A2 noun /ˈaɪtəm/

item

アイテム

Meaning

A single thing, object, or unit, often part of a list or collection.

Example

Each item on the list must be checked carefully.

リストの各アイテムは慎重にチェックする必要があります。

C1 noun ɪnˌten.sɪ.fɪˈkeɪ.ʃən

intensification

強化

Meaning

The process of becoming or making something more intense or extreme.

Example

The intensification of climate change requires urgent action.

気候変動の強化は緊急の行動を必要とします。

C1 adjective /ɪˈnuːmərəbəl/

Innumerable

無数; 数えきれない; 無限

Meaning

too many to be counted; countless; infinite in number

Example

There are innumerable stars in the night sky that we cannot see with our naked eyes.

夜空には数えきれない星があり、私たちは裸眼では見ることができません。

B2 adjective /ˌɪnəˈproʊpriət/

inappropriate

不適切

Meaning

not suitable or proper in the circumstances

Example

It was inappropriate to talk loudly in the library.

図書館で大声で話すのは不適切でした。

C2 adjective /ɪnˈsɛnseɪt/

insensate

無感情な

Meaning

lacking physical sensation or empathy; without feeling or sensitivity

Example

The dictator's insensate cruelty shocked the world.

独裁者の無感情な残虐さは世界を驚かせた。

B2 adjective /ɪsˈlɑːmɪk/

islamic

イスラームの

Meaning

relating to Islam, its followers, or its teachings

Example

The city has many Islamic cultural centers.

その都市には多くのイスラーム文化センターがあります。

C1 adjective /ˌɪnɪkˈsplɪkəbl/

inexplicable

説明できない

Meaning

Impossible to explain or understand.

Example

The sudden disappearance of the file was inexplicable.

ファイルの突然の消失は説明できなかった。

C2 noun /ˌɪn.ɪˈbraɪ.ə.ti/

inebriety

酩酊

Meaning

the state of being drunk or intoxicated

Example

His frequent inebriety led to the loss of his job.

彼の頻繁な酩酊は仕事を失う原因となった。

C2 noun /ˈɪkθiəˌsɔːrz/

ichthyosaurs

イクチオサウルス（絶滅した海の爬虫類）

Meaning

Extinct marine reptiles that resembled fish and dolphins, dominant during the Mesozoic era.

Example

Ichthyosaurs were swift predators of the ancient seas.

イクチオサウルスは古代の海で素早い捕食者でした。

B2 noun ˈɪn.deks

index

インデックス

Meaning

An alphabetical list of names, subjects, etc. with references to the places where they occur, typically found at the end of a book; a sign or measure of something.

Example

An index organizes critical data.

インデックスは重要なデータを整理します。

B2 noun /ˌɪnsɪˈkjʊərɪti/

insecurity

不安感

Meaning

lack of confidence or assurance; a state of uncertainty or vulnerability

Example

Her insecurity made her doubt her abilities despite her experience.

彼女の不安感は彼女に自分の能力を疑わせた。

C2 verb /ˌɪntərˈsiːd/

intercede

Meaning

to act or plead on behalf of someone in difficulty or trouble; to intervene between parties to help resolve a dispute

Example

She interceded with the teacher to give her brother another chance.

C1 adjective /ɪnˈhɛrənt/

inherent

固有の

Meaning

Existing in something as a natural, permanent, or essential quality.

Example

There are inherent risks in extreme sports.

エクストリームスポーツには固有のリスクが存在する。

C1 noun ˌɪn.fɪlˈtreɪ.ʃən

infiltration

浸透、秘密のアクセス

Meaning

The process of entering or gaining access to an organization or place surreptitiously.

Example

Cybersecurity prevents infiltration into sensitive data.

サイバーセキュリティは、機密データへの浸透を防ぎます。

C1 noun /ˌɪnklɪˈneɪʃən/

inclination

傾向

Meaning

A natural tendency or urge to act or feel in a particular way.

Example

She has an inclination towards helping others.

彼女は他の人を助ける傾向があります。

B2 noun, verb /ˈɪnstɪˌtjuːt/

institute

インスティチュート

Meaning

as a noun, an organization founded for a specific purpose; as a verb, to establish or initiate

Example

The university decided to institute new rules for the library.

大学は図書館のために新しいルールを設立することを決定しました。

B2 noun /ɪnˈveɪʒən/

invasion

侵略

Meaning

An instance of invading a country, region, or personal space with armed force or unwelcome presence.

Example

The army prepared for the possibility of an invasion.

軍隊は侵略の可能性に備えました。

C2 adjective /ˌɪm.pəˈfɛk.tə.bəl/

imperfectible

インパーフェクティブル

Meaning

Incapable of being made perfect or complete.

Example

Some human qualities are considered imperfectible.

いくつかの人間の資質は、完璧にはならないと見なされます。

C1 verb /ɪɡˈnaɪt/

ignite

点火する

Meaning

To catch fire or cause to catch fire; to start or arouse.

Example

The sparks ignited the dry leaves in seconds.

火花が数秒で乾燥した葉に火をつけた。

B2 verb /ɪnˈspekt/

inspect

検査する

Meaning

to examine something carefully to check for problems or faults

Example

The engineer will inspect the building for structural damage.

エンジニアは建物の構造的な損傷を検査します。

B2 verb /ˈɪnəveɪt/

innovate

革新

Meaning

To introduce new methods, ideas, or products.

Example

The company must innovate to stay ahead of its competitors.

その企業は競争相手を追い越すために革新を続けなければならない。

B2 noun /ˈaɪkɒn/

icon

アイコン, 象徴

Meaning

A person or thing regarded as a symbol of something, or a graphic symbol on a screen.

Example

The singer became a cultural icon.

その歌手は文化的なアイコンとなった。

C1 noun /ɪnˈækjʊrəsi/

inaccuracy

不正確さ

Meaning

lack of accuracy or precision; an incorrect or wrong detail

Example

The report contained several factual inaccuracies.

その報告書にはいくつかの不正確さがあった。

B2 verb /ɪnˈstrʌkt/

instruct

指示する

Meaning

to teach; to give directions

Example

The teacher instructed the students carefully.

先生は生徒に注意深く指示しました。

B2 adjective /ɪmˈplɪsɪt/

implicit

暗黙の

Meaning

Suggested or understood without being directly stated.

Example

Her trust in him was implicit.

彼女の彼に対する信頼は暗黙のものでした。

C2 noun /ɪmˈpɒs.tʃər/

Imposture

偽装; 詐欺; 虚偽

Meaning

the practice of deceiving others by pretending to be someone else; fraudulent deception

Example

The elaborate imposture lasted for months before investigators uncovered the truth.

その精巧な詐欺は数ヶ月続き、調査員が真実を明らかにするまで続いた。

C1 adjective /ɪmˈpɑːrʃəl/

Impartial

公正; 中立的

Meaning

treating all sides fairly; unbiased; neutral

Example

A good judge must remain impartial throughout the trial.

優れた裁判官は裁判中に公正を保たなければなりません。

C2 noun /ɪˈluːmɪnənt/

illuminant

光源

Meaning

A substance or device that produces light.

Example

The lamp acted as an illuminant in the dark cave.

ランプは暗い洞窟で光源として機能しました。

C1 adjective /ˌɪnədˈvɜːrtənt/

inadvertent

意図しない, 不注意な

Meaning

Not resulting from or achieved through deliberate planning; unintentional.

Example

Her inadvertent mistake caused a delay in the project.

彼女の不注意なミスがプロジェクトの遅延を引き起こしました。

C2 verb /ɪnˈɡreɪʃiˌeɪt/

ingratiate

Meaning

To gain favor or approval by deliberate effort, often in a flattering way.

Example

She tried to ingratiate herself with her boss by complimenting him often.

B1 noun /ɪmˈprɛʃən/

impression

印象, 概念

Meaning

an idea, feeling, or opinion about something or someone

Example

The book gave me a good first impression.

その本は私に良い最初の印象を与えました。

C1 adjective ɪnˈsaɪ.sɪv

incisive

鋭い

Meaning

Intelligently analytical and clear-thinking; showing clear thought and good understanding of what is important.

Example

His incisive comments revealed the core issues.

彼の鋭いコメントは核心的な問題を明らかにしました。

C2 adjective /ˌɪndaɪˈdʒestəbəl/

Indigestible

消化不良な; 消化しにくい

Meaning

difficult or impossible to digest; hard to process in the stomach

Example

The old bread became hard and indigestible.

古いパンは硬くなり、消化不良になった。

C1 verb /ɪnˈvɪɡ.ər.eɪt/

invigorate

活性化する

Meaning

To give strength or energy to someone or something.

Example

A morning walk can invigorate both body and mind.

朝の散歩は、体と心を活性化することができます。

C1 adjective /ɪmˈpæsəbəl/

impassable

通行不可能

Meaning

Impossible to travel along or over.

Example

The road became impassable after the heavy snowfall.

大雪の後、道は通行不可能になりました。

C1 adjective /ɪnˈdefɪnət/

Indefinite

不確定な

Meaning

not clearly defined; uncertain; vague; unlimited in time

Example

The meeting has been postponed for an indefinite period.

会議は不確定な期間に延期されました。

C2 noun /ɪnˈtɛnʃən/

intension

内的意味

Meaning

The internal content of a concept; the set of attributes implied by a word or phrase.

Example

The intension of the word 'dog' includes being a mammal and domesticated.

'犬'という言葉のインテンションには哺乳類であり、飼いならされたことが含まれます。

B2 adjective /ɪnˈstrʌkʃənəl/

instructional

教育的な

Meaning

providing knowledge or information; intended to teach

Example

The website offers many instructional videos for beginners.

このウェブサイトは初心者向けに多くの教育的なビデオを提供しています。