B1 verb /ˈɪndɪkeɪt/

indicate

示す

Meaning

to point out; to show or suggest; to be a sign of

Example

The red light indicates that you should stop.

赤い信号は停止すべきことを示しています。

B2 noun /ɪnˈdʒɛkʃən/

injection

Meaning

the act of introducing a substance into the body through a needle

Example

The nurse gave me an injection to prevent the infection.

B2 noun /ˈaɪ.dəl/

Idol

偶像; 崇拝される人物

Meaning

an image or representation of a god used as an object of worship; a person who is greatly admired

Example

The singer became a teenage idol after her hit song topped the charts worldwide.

その歌手はヒットソングが世界中のチャートで1位に達した後、ティーンエイジャーのアイドルとなった。

C1 adjective /ˌɪməˈtɪəriəl/

immaterial

無関係

Meaning

Not important or relevant; lacking physical substance.

Example

The judge ruled that the argument was immaterial to the case.

裁判官はその議論が事件に関係ないと判断しました。

B2 adjective /ɪnˈtɛns/

intense

強烈

Meaning

Of extreme force, degree, or strength.

Example

She felt intense pain after the accident.

事故後、彼女は強烈な痛みを感じました。

C1 adjective /ɪnˈfleɪtɪd/

inflated

膨らんだ

Meaning

excessively increased in size, value, or importance; filled with air or gas

Example

The company faced criticism for its inflated prices.

その会社は膨らんだ価格で批判を受けました。

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。

C1 adjective /ˌɪnkəmˈpætəbl/

incompatible

互換性がない

Meaning

Not able to exist or work together without conflict.

Example

Their personalities were completely incompatible.

彼らの性格は完全に互換性がなかった。

C1 adjective /ˌɪnəˈfɛnsɪv/

inoffensive

無害な

Meaning

Not likely to offend or provoke; harmless.

Example

His inoffensive remarks kept the conversation friendly.

彼の無害なコメントは会話を友好的に保ちました。

B2 noun /ˌɪntəˈrʌpʃən/

interruption

中断

Meaning

the act of stopping or breaking the continuity of something; a pause caused by an external action

Example

The meeting was delayed due to an unexpected interruption.

予期しない中断のため会議は遅れた。

C2 noun /aɪˈkɒnəklæst/

iconoclast

偶像破壊者

Meaning

A person who attacks or criticizes cherished beliefs, traditions, or institutions.

Example

He was known as an iconoclast who challenged old traditions.

彼は古い伝統に挑戦した偶像破壊者として知られていました。

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。

C2 noun /ˌɪnvəˈlɪdɪti/

invalidity

無効性

Meaning

the state of being invalid, legally void, or lacking force or validity

Example

The court ruled that the contract suffered from invalidity.

裁判所はその契約に無効性があると判断した。

C1 noun /ˈɪntrɪkəsi/

intricacy

複雑さ

Meaning

the quality of being very detailed or complicated

Example

The intricacy of the design impressed everyone.

デザインの複雑さは全員を感動させました。

C1 noun ˌɪn.ɪˈfɪʃ.ən.si

inefficiency

非効率

Meaning

The state or quality of not achieving maximum productivity; failure to make the best use of time or resources.

Example

Government inefficiency leads to slow project completion.

政府の非効率性がプロジェクトの完了を遅らせる。

C1 adjective /ɪˈnɒkjuəs/

innocuous

無害な

Meaning

Not harmful or offensive.

Example

His remark was completely innocuous and not meant to offend anyone.

彼の発言は完全に無害で、誰かを傷つける意図はなかった。

C1 verb /ɪmˈpiːd/

impede

妨げる

Meaning

To obstruct or hinder the progress or development of something.

Example

Lack of funds can impede business growth.

資金不足はビジネスの成長を妨げる可能性があります。

C2 adjective /ɪmˈplaɪəbl/

impliable

暗示可能な

Meaning

Capable of being implied or suggested.

Example

The meaning of the statement is not directly clear but is impliable from the context.

その声明の意味は直接的には明確ではないが、文脈から推測可能である。

C1 adjective /ˈɪnərmoʊst/

Innermost

最も深い; 最も個人的な

Meaning

most private and secret; deepest; most personal

Example

She shared her innermost feelings with her closest friend.

彼女は最も深い感情を最も親しい友人と共有しました。

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。

C1 noun /ɪnˈsek.tɪ.saɪd/

Insecticide

殺虫剤

Meaning

a substance used for killing insects; a chemical pesticide that targets insects

Example

The farmer sprayed insecticide on his crops to protect them from harmful bugs.

農夫は作物を有害な虫から守るために殺虫剤を噴霧しました。

C2 noun /ˌɪmprəˈpraɪəti/

impropriety

不正行為

Meaning

Failure to observe standards of honesty or modesty; improper behavior.

Example

The politician was accused of financial impropriety.

その政治家は財政的不正行為で告発されました。

B2 verb /ɪnˈherɪt/

inherit

相続する

Meaning

to receive money, property, or characteristics from someone when they die; to acquire from predecessors

Example

She inherited her grandmother's house.

彼女は祖母の家を相続しました。

C1 verb /ɪnˈklaɪn/

incline

傾く

Meaning

to feel willing or favorably disposed toward something; to bend or tilt

Example

She is inclined to agree with the proposal.

彼女は提案に賛成する傾向があります。

A2 adjective/noun /ˈɪndiən/

indian

インディアンの

Meaning

Relating to India, its people, or their culture.

Example

She loves Indian food, especially biryani.

彼女はインディアンの料理が好きで、特にビリヤニが好きです。

B2 verb /ɪnˈfɛkt/

infect

感染させる

Meaning

To contaminate with a disease-causing organism.

Example

The virus can infect healthy people quickly.

ウイルスは健康な人々を迅速に感染させることができます。

C2 adjective /ɪˈnɪkwɪtəs/

iniquitous

不正義

Meaning

grossly unfair and morally wrong

Example

Slavery was one of the most iniquitous practices in history.

奴隷制は歴史上最も不正義な行為の一つでした。

C2 adjective /ɪˈræsɪbl/

irascible

怒りっぽい

Meaning

Easily angered; quick-tempered.

Example

His irascible nature often got him into trouble.

彼の怒りっぽい性格はよくトラブルを引き起こしていた。

C1 noun /ˌɪmɔːrˈtæləti/

immortality

不死; 永遠の命

Meaning

the state of living forever; eternal life or lasting fame beyond death

Example

Many ancient cultures believed that heroes could achieve immortality through great deeds.

多くの古代文化では、英雄が偉業によって不死を得られると信じられていた。

C1 adjective /ˌɪntərˈtwaɪnd/

intertwined

幸福

Meaning

closely connected or twisted together

Example

Their lives became deeply intertwined after the accident.

彼女は賞を受け取ったとき、幸せを隠せませんでした。

C1 noun /ɪnˈdɪf.ər.əns/

Indifference

無関心; 無関心さ; アパシー

Meaning

lack of interest, concern, or sympathy; the state of not caring about something

Example

His indifference to his studies resulted in poor grades throughout the semester.

彼の学業に対する無関心さが、学期中ずっと悪い成績をもたらした。

B1 adjective /ɪˈmiːdiət/

immediate

即時

Meaning

happening or done without delay

Example

The doctor gave her immediate attention.

医者は彼女に即時の注意を与えました。

C2 noun /ˌɪmprɪˈmɑːtər/

imprimatur

承認

Meaning

An official license or approval, especially to publish a book.

Example

The book was released with the official imprimatur of the church.

その本は教会の正式な承認を得て出版されました。

C2 noun /ɪnˈɛrənsi/

inerrancy

無謬性

Meaning

the belief or quality of being free from error; absolute correctness

Example

Some religious groups strongly affirm the inerrancy of their sacred texts.

いくつかの宗教団体は、自分たちの聖典の誤りのなさを強く主張しています。

C1 adjective /ˌɪndɪˈfɛnsəbl̩/

indefensible

弁護できない

Meaning

not able to be protected or justified

Example

The minister’s remarks were considered indefensible by the public.

大臣の発言は公衆によって弁護できないとみなされました。

B1 verb ɪnˈspaɪər

inspire

インスパイアする

Meaning

To fill someone with the urge or ability to do or feel something, especially creative or noble.

Example

Artemis seeks to inspire future generations.

アルテミスは未来の世代にインスパイアを与えようとしています。

B2 adjective ɪnˈev.ɪ.tə.bəl

inevitable

避けられない

Meaning

Certain to happen; unavoidable.

Example

Death is an inevitable part of life.

死は人生の避けられない一部です。

C2 adjective /ˌɪnkəmˈprɛsəbl/

incompressible

圧縮不可能

Meaning

Not able to be pressed or squeezed into a smaller space.

Example

Liquids are generally considered incompressible.

液体は通常、圧縮不可能と見なされます。

C2 adjective /ˌɪn.ɪˈlʌk.tə.bəl/

ineluctable

Meaning

Impossible to avoid or escape; inevitable.

Example

Death is an ineluctable part of human existence.

A1 conjunction /ɪf/

if

もし

Meaning

used to introduce a condition or supposition

Example

If it rains tomorrow, we will stay home.

もし明日雨が降ったら、私たちは家にいます。

A2 adverb /ɪˈmiːdiətli/

immediately

直ちに

Meaning

at once; without delay

Example

She responded immediately to the emergency call.

彼女は緊急の電話に直ちに応答した。

B1 adjective /ɪnkəˈrɛkt/

incorrect

間違い

Meaning

not correct or accurate

Example

The information you provided was incorrect.

あなたが提供した情報は間違っていました。

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.

C1 adjective /ɪˈnɔːrdənət/

inordinate

過度の

Meaning

Excessive or unusually large in degree.

Example

She spent an inordinate amount of time on her phone.

彼女は電話に過度の時間を費やしました。

C1 noun /ˌɪn.dɪˈsɪʒ.ən/

Indecision

優柔不断; 決断力の欠如; 迷い

Meaning

the inability to make decisions quickly; uncertainty about what to do

Example

Her indecision about which job offer to accept caused her to miss both opportunities.

どの仕事のオファーを受けるかについての優柔不断さが、両方のチャンスを逃す原因となった。

C2 noun /ɪnˈtræn.sɪ.dʒəns/

intransigence

不屈

Meaning

Refusal to change one's views or to agree about something.

Example

The negotiations failed due to the intransigence of both parties.

両者の不屈の姿勢のために交渉は失敗した。

C2 verb /ˌɪntərˈpoʊz/

interpose

Meaning

To place or insert between one thing and another; to intervene in a situation.

Example

He quickly interposed himself between the fighters to stop the quarrel.

B2 adjective /ˌɪnfluˈenʃəl/

Influential

影響力のある; 強力な

Meaning

having great influence on someone or something; powerful; persuasive

Example

She is an influential leader in the community.

彼女はコミュニティの中で影響力のあるリーダーです。

C1 adjective /ɪnˈfɜːm/

infirm

虚弱

Meaning

Weak, especially due to old age or illness.

Example

The infirm old man needed assistance to walk.

その虚弱な老人は歩くために助けが必要でした。

C2 verb /ɜːrk/

irk

苛立たせる

Meaning

to annoy or irritate someone

Example

It irks me when people are late without calling.

人々が電話をかけずに遅れると、私はイライラします。

A1 preposition /ɪn ˈfrʌnt əv/

in front of

〜の前に

Meaning

positioned before or ahead of something; facing or located at the forward side of a person or object

Example

She stood in front of the building.

彼女は建物の前に立っていた。

B2 noun, verb /ɪntʃ/

inch

インチ / ゆっくり動く

Meaning

A unit of length equal to 2.54 centimeters; or to move slowly and carefully in small amounts.

Example

She inched closer to the edge of the stage.

彼女はステージの端にゆっくり近づいた。

C2 adjective /ɪnˈɛksərəbl/

inexorable

避けられない

Meaning

Impossible to stop or prevent; relentless.

Example

The inexorable rise of technology is changing every aspect of life.

テクノロジーの避けられない上昇は、生活のすべての側面を変えています。

B2 noun /ɪnˈtɒlərəns/

intolerance

不寛容

Meaning

unwillingness to accept or endure beliefs, behaviors, or conditions different from one's own

Example

The leader was criticized for his intolerance toward other religions.

リーダーは他の宗教に対する不寛容さで批判されました。

C2 noun /ˌɪnsjəˈlærəti/

insularity

島国性

Meaning

The state of being isolated or narrow-minded.

Example

The insularity of the group prevented them from accepting new ideas.

グループの島国性は新しいアイデアを受け入れることを妨げた。

B2 noun ɪˈmjuː.nɪ.ti

immunity

免疫力

Meaning

The ability of an organism to resist a particular infection or toxin by the action of specific antibodies.

Example

A strong immunity protects against infections.

強い免疫力は感染症から守ります。

C1 noun /ɪnˌkɑːsəˈreɪʃən/

incarceration

投獄

Meaning

the state of being imprisoned or confined

Example

The criminal faced years of incarceration for his crimes.

犯人はその犯罪のために長年の投獄を受けた。

C2 adjective /ɪnhɑːrˈmoʊniəs/

Inharmonious

不協和音

Meaning

lacking harmony; discordant in sound; not in tune

Example

The inharmonious sounds from the broken piano made everyone cover their ears.

壊れたピアノからの不協和音がみんなを耳をふさがせました。

B1 adverb /ˈɪnstəntli/

instantly

すぐに

Meaning

immediately, without any delay

Example

He replied instantly to the message.

彼はすぐにメッセージに返事をした。

C1 adjective /ˈɪnfəməs/

infamous

悪名高い

Meaning

well known for some bad quality or deed

Example

The dictator was infamous for his cruelty.

その独裁者はその残虐さで悪名高かった。

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。

C1 adjective /ˌɪndɪˈskraɪbəbəl/

Indescribable

言葉では表現できない

Meaning

impossible to describe or express in words; beyond description

Example

The beauty of the sunset was indescribable.

夕日の美しさは言葉では表現できないほどでした。

C2 noun /ˈɪntəˌkrɒpɪŋ/

intercropping

間作農業

Meaning

The agricultural practice of cultivating two or more crops simultaneously in the same field to maximize land use efficiency and improve soil health.

Example

Intercropping can help improve soil fertility and pest control.

間作農業は土壌の肥沃度と害虫管理の向上に役立ちます。

B2 verb /ɪnˈdjuːs/

induce

誘発する

Meaning

to cause or persuade someone to do something; to bring about a result

Example

The doctor induced sleep with a mild sedative.

医師は軽い鎮静剤で睡眠を引き起こしました。

C1 noun /ˌɪnfɪˈdɛləti/

infidelity

不倫

Meaning

the act of being unfaithful to a spouse or partner

Example

Their marriage ended due to his infidelity.

彼らの結婚は彼の不倫が原因で終わった。

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 noun /ɪnˈtruː.ʒən/

intrusion

不正侵入

Meaning

Unauthorized entry into a system or place without permission

Example

The company detected an intrusion in its server.

会社はサーバーに侵入を検出しました。

B2 adjective /ɪˈlɪt.ər.ət/

Illiterate

識字障害者; 読み書きができない; 無知

Meaning

unable to read or write; lacking education

Example

The program aims to help illiterate adults learn to read and write.

このプログラムは、識字率の低い成人が読み書きを学ぶ手助けをすることを目的としています。

C1 adjective /ˈɪnsjələr/

insular

狭い心の、島に関連する

Meaning

Narrow-minded, isolated, or relating to an island.

Example

The community was criticized for its insular attitudes toward outsiders.

そのコミュニティは外部の人々に対する狭量な態度で批判されました。

B2 noun ˌɪnɪˈkwɒlɪti

inequality

不平等

Meaning

Difference in size, degree, circumstances, etc.; lack of equality.

Example

The theme of inequality is prominent throughout the story.

不平等のテーマは物語全体にわたって顕著です。

B2 adjective /ɪnˈkeɪpəbəl/

incapable

無能力な

Meaning

lacking the ability, skill, or capacity to do something

Example

He is incapable of understanding complex instructions.

彼は複雑な指示を理解できない。

A2 verb /ɪmˈpruːv/

improve

改善する

Meaning

to make or become better; to enhance quality or condition

Example

Practice helps improve your skills.

練習はあなたのスキルを向上させる手助けをします。

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。

C2 noun /ˌaɪ.diˈeɪ.ʃən/

ideation

アイデア創出

Meaning

The process of forming and developing new ideas or concepts through creative thinking and brainstorming.

Example

The team engaged in ideation sessions to generate new product ideas.

チームは新製品のアイデアを生み出すためにアイデーションセッションに取り組んだ。

C2 adjective /ɪnˈɡlɔːriəs/

inglorious

不名誉な

Meaning

Causing shame or disgrace; not bringing honor or glory.

Example

The army suffered an inglorious defeat.

軍隊は不名誉な敗北を喫した。

B2 adjective /ɪˈrɪˌspɑn.sə.bəl/

Irresponsible

無責任

Meaning

lacking a sense of responsibility; careless

Example

It was irresponsible of him to leave without telling anyone.

彼が誰にも言わずに去ったのは無責任だった。

B2 verb /ˈɪr.ɪ.teɪt/

irritate

イライラさせる

Meaning

To make someone annoyed or angry; to cause discomfort or inflammation.

Example

Rubbing your eyes can irritate them.

目をこすると、それが刺激になることがあります。

B2 noun ˌɪn.stəˈleɪ.ʃən

installation

インストール

Meaning

The action or process of installing someone or something, or of being installed.

Example

The installation of the submarine cable is almost complete.

海底ケーブルのインストールはほぼ完了しています。

C1 verb /ˈɪnsjuleɪt/

insulate

Meaning

To protect something by covering it, especially to prevent heat, sound, or electricity from escaping or entering.

Example

The house was insulated to reduce heating costs.

A2 noun /ˈɪm.ɪdʒ/

Image

イメージ; 画像; 形象

Meaning

a representation of the external form of a person or thing in art; a mental picture or impression

Example

The company worked hard to improve its public image after the scandal.

企業はスキャンダル後、公共のイメージを改善するために一生懸命働きました。

C1 verb /ɪnˈdaɪt/

indict

起訴する

Meaning

to formally accuse someone of committing a serious crime

Example

The grand jury decided to indict the politician for corruption.

大陪審団は腐敗のために政治家を起訴することを決定した。

B1 verb /ɪnˈtend/

intend

意図する

Meaning

to plan or have in mind as a purpose; to mean

Example

I intend to finish this project by tomorrow.

私はこのプロジェクトを明日までに終わらせるつもりです。

C2 verb /ɪnˈhjuːm/

inhume

埋葬する

Meaning

to bury a dead body in the ground

Example

They inhumed the warrior with full honors.

彼らは戦士を完全な名誉を持って埋葬しました。

B2 noun /ˈɪnˌsaɪt/

insight

洞察力

Meaning

The ability to understand the true nature of something; deep understanding.

Example

Her insight into human behavior made her a successful psychologist.

彼女の人間行動に対する洞察力は、彼女を成功した心理学者にした。

C1 noun ˌɪn.toʊˈneɪ.ʃən

intonation

イントネーション

Meaning

The rise and fall of tone in speech and pronunciation.

Example

Proper intonation enhances the clarity of a speech.

適切なイントネーションはスピーチの明確さを高めます。

B1 noun ɪˈnɪʃətɪv

initiative

イニシアティブ

Meaning

An act or strategy intended to resolve a difficulty or improve a situation; a fresh approach to something.

Example

NASA's initiative to return humans to the Moon is ambitious.

NASAの月面への人類を戻すイニシアティブは野心的です。

C2 noun /ˌɪntərˈsɛʃən/

intercession

仲介

Meaning

the act of intervening or pleading on behalf of another person

Example

The prisoner was released due to the intercession of influential leaders.

囚人は影響力のあるリーダーたちの仲介で釈放されました。

B2 noun /ɪsˈlɑːm/

islam

イスラム教

Meaning

the religion founded by the Prophet Muhammad, based on belief in one God (Allah)

Example

Islam emphasizes peace, justice, and compassion.

イスラム教は平和、正義、そして慈悲を強調します。

C1 adjective, noun /ɪnˈdɪkətɪv/

indicative

指示的

Meaning

Serving as a sign or expression of something; in grammar, a mood used to make factual statements.

Example

His tone was indicative of his frustration.

彼のトーンは彼のフラストレーションを示していた。

C2 adjective /ˌaɪsəʊˈθɜːrməl/

isothermal

等温

Meaning

Having or maintaining equal or constant temperature.

Example

The experiment was conducted under isothermal conditions.

実験は等温条件で行われました。

C1 adjective /ɪnˈflæməbəl/

Inflammable

可燃; 発火性

Meaning

easily set on fire; flammable; combustible

Example

The inflammable material caught fire quickly.

その可燃性材料はすぐに火をつけました。

C2 verb /ˈɪŋkʌlpeɪt/

inculpate

非難する

Meaning

To blame or accuse someone of wrongdoing.

Example

The evidence seemed to inculpate the suspect in the crime.

証拠は容疑者を犯行に巻き込んでいるように見えた。

C1 adjective /ɪnˈhjuːmən/

Inhuman

非人道的

Meaning

lacking human qualities of compassion and mercy; cruel or barbaric

Example

The prisoners were kept in inhuman conditions.

囚人たちは非人道的な状況で収容されていました。

B2 adjective /ɪˈmætʃʊr/

Immature

未熟; 完全に発達していない; 子供っぽい

Meaning

not fully developed; lacking emotional or intellectual development; childish

Example

His immature behavior during the meeting disappointed everyone.

会議中の彼の未熟な行動は、皆を失望させました。

C1 adjective /ɪnˈvæljʊəbl/

invaluable

計り知れない価値がある

Meaning

Extremely useful or indispensable.

Example

Her advice proved invaluable to my success.

彼女の助言は私の成功にとって非常に貴重でした。

B2 verb /ɪnˈtriːɡ/

intrigue

魅了する

Meaning

to arouse curiosity or interest; to make someone fascinated

Example

The mystery novel will intrigue any reader.

ミステリー小説はすべての読者を魅了するでしょう。

B2 noun ˈɪnər strɛŋkθ

inner strength

内面の強さ

Meaning

Mental or spiritual power that helps a person cope with difficulties.

Example

Community service fosters inner strength in individuals.

コミュニティサービスは個人に内面的な強さを育む。

C2 adjective /ɪnˈkɒŋɡruənt/

incongruent

不一致な

Meaning

Not in harmony or keeping with the surroundings or other aspects.

Example

His casual outfit looked incongruent at the formal dinner.

彼のカジュアルな服装は正式なディナーで不一致に見えた。

C2 adjective /ɪmˈpælpəbəl/

impalpable

触れない

Meaning

unable to be felt by touch; difficult to grasp or understand

Example

There was an impalpable sense of fear in the room.

部屋には触れない恐怖感があった。

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。

C2 adverb /ˌɪnsəʊˈmʌtʃ/

insomuch

これほど

Meaning

to such an extent

Example

He was insomuch tired that he could hardly stand.

彼はあまりにも疲れていて、ほとんど立つことができませんでした。

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。

C2 adjective /ɪnˈdjuːbɪtəbl/

indubitable

疑う余地がない

Meaning

Impossible to doubt; unquestionable.

Example

It is indubitable that hard work leads to success.

努力すれば成功に繋がることは疑う余地がない。

C2 adjective /ɪnˈɛstɪməbl/

inestimable

計り知れない

Meaning

Too great or valuable to be measured or estimated.

Example

Her contribution to the project was of inestimable value.

プロジェクトへの彼女の貢献は計り知れない価値があった。

C1 noun ˌɪnfɛsˈteɪʃən

infestation

侵入, 異常に大量の昆虫や動物がある場所に存在すること

Meaning

The presence of an unusually large number of insects or animals in a place, causing damage or disease.

Example

The infestation of ants in the kitchen led to immediate pest control measures.

キッチンにおけるアリの侵入は、即座に害虫駆除対策を講じる結果となった。

C1 adjective /ˌɪntərˈtʃeɪndʒəbl/

interchangeable

交換可能な

Meaning

able to be exchanged with each other without difference or loss of function

Example

These machine parts are interchangeable, so they can be replaced easily.

これらの機械部品は交換可能なため、簡単に交換できます。

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。

C1 noun /ɪnˈsɜːrdʒəns/

insurgence

反乱

Meaning

An act of rebellion or uprising against authority.

Example

The government struggled to contain the growing insurgence.

政府は増大する反乱を抑制するのに苦労した。

B2 adjective /ɪmˈpɜːrfɪkt/

imperfect

不完全

Meaning

Not perfect; having faults or flaws.

Example

The painting was beautiful despite being imperfect.

その絵は美しかったが、完璧ではなかった。

B1 verb /ɪnˈkriːst/

increased

増加した

Meaning

became greater in size, amount, or degree

Example

The company's revenue increased last year.

会社の収益は昨年増加しました。

C2 verb /ɪnˈsɪnəˌreɪt/

incinerate

焼却する

Meaning

to burn something completely until it is reduced to ashes

Example

The city decided to incinerate the medical waste for safety.

その都市は安全のために医療廃棄物を焼却することを決定しました。

C2 adjective /ˌɪməˈmɔːriəl/

immemorial

不朽の

Meaning

Extending back beyond memory or record; ancient.

Example

The tradition has been followed since time immemorial.

その伝統は不朽の時代から受け継がれてきた。

C1 noun /ˌɪn.səˌbɔːr.dɪˈneɪ.ʃən/

insubordination

反抗

Meaning

Defiance of authority; refusal to obey orders.

Example

The soldier was punished for insubordination during the mission.

その兵士はミッション中の反抗で罰せられました。

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。

C2 noun /ˈaɪsinəs/

iciness

冷たさ

Meaning

The state of being cold in manner or temperature.

Example

There was a distinct iciness in his voice.

彼の声には明確な冷たさがあった。

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 adjective /ɪˈrædɪkəbəl/

irradicable

根絶不可能な

Meaning

not able to be eradicated; impossible to destroy or remove completely

Example

The love of a mother for her child is irradicable.

母親の子供への愛は根絶不可能です。

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。

B1 adjective /ɪnˈtɜːrnəl/

internal

内部

Meaning

situated inside; relating to the inside or inner part of something

Example

The company is conducting an internal audit this month.

その会社は今月内部監査を行っています。

A2 noun, verb /ˈɪʃuː/

issue

問題, 発行, 配布

Meaning

A problem, topic, or the act of supplying or distributing something.

Example

The magazine will issue a new edition next week.

雑誌は来週新しい版を発行します。

B2 noun /ɪnˈsaɪdə/

insider

インサイダー

Meaning

a person within a group or organization who has access to confidential information

Example

He was an insider who knew all the company's secrets.

彼は会社のすべての秘密を知っているインサイダーでした。