C2 verb /ɪnˈtɜːrpəˌleɪt/

interpolate

挿入する

Meaning

To insert something, often words, into a text or conversation; to estimate values between known data points.

Example

The editor interpolated a missing paragraph into the manuscript.

編集者は原稿に欠落した段落を挿入した。

C2 adjective /ɪmˈpɔːrtʃənət/

importunate

しつこい

Meaning

Persistent to the point of annoyance or intrusion

Example

The importunate salesman kept calling despite repeated refusals.

しつこい販売員は、繰り返し拒否されても電話をかけ続けました。

C2 verb /ˌɪmpɔːrˈtuːn/

importune

しつこく頼む

Meaning

To ask someone persistently or pressingly for something

Example

The child importuned his mother for a new toy.

その子供は新しいおもちゃを欲しがって母親にしつこく頼んだ。

C2 adjective /ˌɪrɪˈkɒnsɪləbl/

irreconcilable

和解できない

Meaning

impossible to make compatible or bring into harmony; unable to resolve differences

Example

The couple separated due to irreconcilable differences.

そのカップルは和解できない違いのために別れました。

C2 noun /ɪkˈsɔːr.ə/

Ixora

イクソラ

Meaning

a tropical flowering shrub with clusters of small bright red, orange, or yellow flowers

Example

The bright red ixora bushes lined the pathway to the tropical garden.

明るい赤いイクソラの低木が熱帯庭園への小道を囲んでいました。

C2 adjective /ˌɪnkoʊˈɜːrsəbl̩/

incoercible

強制できない

Meaning

Not capable of being forced, compelled, or restrained.

Example

Her incoercible spirit inspired others to fight for justice.

彼女の強制できない精神は他の人々に正義のために戦うようにインスパイアした。

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。

C2 verb /ˌɪmpɔːrˈtuːnd/

importuned

しつこく頼む

Meaning

asked someone persistently and pressingly for something

Example

She importuned her boss for a raise until he finally gave in.

彼女は昇給を求めて上司にしつこく頼んだ、彼がとうとう折れたまで。

C2 adjective /ɪˈlɪmɪtəbl/

illimitable

無限

Meaning

Without limits or bounds.

Example

The universe is often described as illimitable.

宇宙はしばしば無限であると説明されます。

C2 noun /ˈɪnˌɡreɪt/

ingrate

Meaning

An ungrateful person; someone who shows no appreciation.

Example

He worked hard for his friend, but the ingrate never thanked him.

C2 adjective /ɪnˈsɛptɪv/

inceptive

初期の

Meaning

Relating to or marking the beginning or initial stage of something.

Example

The inceptive phase of the project was marked by enthusiastic planning.

プロジェクトの開始段階は熱心な計画で特徴づけられました。

C2 noun /ˈɪn.dɪ.dʒəns/

indigence

貧困

Meaning

a state of extreme poverty or destitution

Example

The charity was founded to help people living in indigence.

その慈善団体は貧困の中で生活している人々を助けるために設立されました。

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。

C2 adjective /ɪnˈeɪliənəbl/

inalienable

譲渡不可能

Meaning

Unable to be taken away or transferred; absolute and permanent.

Example

Freedom of speech is an inalienable right.

言論の自由は譲渡不可能な権利です。

C2 adjective /ɪnˈdʒɛnjuəs/

ingenuous

無邪気

Meaning

Innocent, naive, and unsuspecting; showing childlike simplicity and sincerity.

Example

Her ingenuous smile revealed her genuine kindness.

彼女の無邪気な笑顔は彼女の本当の優しさを明らかにしました。

C2 verb /ˌɪnkəˈpæsɪteɪt/

incapacitate

無力化する

Meaning

to deprive someone or something of the ability or strength to function

Example

The severe injury incapacitated the player for the rest of the season.

その重傷はプレーヤーをシーズンの残りの期間無力化させた。

C2 noun /ˈænʒənuː/

ingenue

無邪気な若い女性

Meaning

an innocent, naïve young woman, especially as represented in literature or theater

Example

She played the role of the ingénue in the play with great charm.

彼女は劇で無邪気な若い女性の役を演じ、大きな魅力を発揮しました。

C2 adjective /ɪmˈpɪəriəs/

imperious

横柄な

Meaning

Arrogantly domineering or overbearing.

Example

Her imperious tone made it hard for others to argue.

彼女の横柄な口調は他の人々が議論するのを難しくしました。

C2 noun /ˌɪnkænˈdɛsəns/

incandescence

白熱光

Meaning

the emission of light from a hot object; brilliance

Example

The incandescence of the candle filled the dark room.

ろうそくの白熱光が暗い部屋を満たしました。

C2 verb /ɪnˈveɪ/

inveigh

激しく批判する

Meaning

To speak or write about something with great hostility and criticism.

Example

He inveighed against the corruption in government.

彼は政府の腐敗に対して激しく批判した。

C2 verb /ɪnˈdʒɛst/

ingest

摂取する

Meaning

To take food, drink, or another substance into the body, usually by swallowing.

Example

The patient must ingest the medicine with water.

患者は水と一緒に薬を摂取する必要があります。

C2 verb /ˈɪməleɪt/

immolate

犠牲にする/焼死させる

Meaning

To kill or sacrifice, especially by burning.

Example

The protesters threatened to immolate themselves in front of the building.

抗議者たちは建物の前で自ら火にくべると脅した。

C2 noun /ˈɪŋkjʊbəs/

incubus

悪夢のような重荷

Meaning

An oppressive or nightmarish burden; in folklore, an evil spirit that lies upon sleeping people.

Example

Debt became an incubus that weighed heavily on the family.

借金は家族に重くのしかかる悪夢のような存在となった。

C2 verb /ɪmˈpɛnd/

impend

迫る

Meaning

to be about to happen; to loom threateningly

Example

Dark clouds suggested that a storm was impeding.

暗い雲が嵐が迫っていることを示唆していた。

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。

C2 adjective /ɪnˈsɪpiənt/

incipient

初期の

Meaning

in an initial stage; beginning to develop

Example

The incipient storm made the sky turn dark and heavy.

初期の嵐が空を暗く重くさせた。

C2 adjective /ˌɪn.trəˈsɛl.jʊ.lər/

intracellular

細胞内

Meaning

Located or occurring within a cell.

Example

The drug works by targeting intracellular bacteria.

薬は細胞内の細菌をターゲットにして作用します。

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。

C2 adjective /ɪnˈkɒrɪdʒəbəl/

incorrigible

訂正不可能な

Meaning

incapable of being corrected, improved, or reformed

Example

He is an incorrigible optimist who never loses hope.

彼は決して希望を失わない訂正不可能な楽観主義者です。

C2 noun /ˈɪl.i.æd/

iliad

イリアス

Meaning

An ancient Greek epic poem attributed to Homer, describing the events of the Trojan War.

Example

Students studied the Iliad to understand Greek mythology and heroism.

学生たちはイリアスを学び、ギリシャ神話と英雄主義を理解しました。

C2 noun /ɪmˌprɒb.əˈbɪl.ə.ti/

Improbability

不確実性

Meaning

the quality or state of being improbable; unlikely to be true or to happen

Example

The improbability of winning the lottery twice didn't stop her from buying tickets.

ロトで二回連続で当選する可能性の低さは、彼女がチケットを買うのを止めませんでした。

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。

C2 adjective /ˌɪnɪkˈstɛnsəbl/

inextensible

伸縮不可

Meaning

Not capable of being stretched or extended.

Example

This rope is made of an inextensible material.

このロープは伸縮不可の材料でできています。

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。

C2 noun /ˌɪn.trəˈɡreʃ.ən/

introgression

遺伝子流入

Meaning

The transfer of genetic information from one species to another through repeated backcrossing.

Example

Introgression plays a significant role in plant breeding.

イントログレッションは植物育種において重要な役割を果たします。

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。

C2 adjective /ˈɪkθiɪk/

ichthyic

魚のような

Meaning

Relating to or resembling fish.

Example

The artist's painting had an ichthyic quality.

アーティストの絵には魚のような特徴がありました。

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 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。

C2 noun /ˌɪmpjuˈteɪʃən/

imputation

非難

Meaning

an accusation or attribution of blame

Example

The politician denied the imputation of corruption.

政治家は腐敗の非難を否定した。

C2 adverb /ˈaɪsɪli/

icily

冷たく

Meaning

In a very cold, unfriendly, or hostile manner.

Example

She replied icily to his question.

彼女は冷たく彼の質問に答えた。

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。

C2 adjective /ɪnˈvaɪələt/

inviolate

汚されていない

Meaning

free from violation, injury, or desecration; kept safe and untouched

Example

The ancient temple remained inviolate for centuries.

古代の寺院は何世紀にもわたって汚されることなく保たれました。

C2 noun /ˌɪkθiˈɒlədʒi/

ichthyology

魚類学

Meaning

The branch of zoology that deals with fish.

Example

He pursued a degree in ichthyology at the university.

彼は大学で魚類学の学位を取得した。

C2 verb /ˌɪntərˈlɒk/

interlock

かみあう

Meaning

to fit or connect together securely so that two or more things are joined

Example

The gears interlock to ensure smooth movement of the machine.

ギアは機械のスムーズな動作を確保するために噛み合います。

C2 verb /ɪnˈdaɪt/

indite

作詞する

Meaning

To write or compose (literary or formal works).

Example

The poet indited a heartfelt sonnet.

詩人は心のこもったソネットを作詞した。

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 adjective /ˌɪndɪˈvɜːrtɪbəl/

indivertible

Meaning

Not able to be turned aside or diverted.

Example

The judge's indivertible attention was on the case.

C2 adjective /ˌɪnfɪnɪˈtɛsɪməl/

infinitesimal

微細な

Meaning

Extremely small in size or amount; so tiny as to be almost negligible.

Example

The error was so infinitesimal that it didn’t affect the results.

そのエラーは非常に微細で、結果に影響を与えることはありませんでした。

C2 adjective /ˌɪnsəˈpɔːrtəbl̩/

insupportable

耐えられない

Meaning

Too extreme or difficult to be endured.

Example

The heat was insupportable during the long journey.

長い旅の間、暑さは耐えられなかった。

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。

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。

C2 adjective /ɪnˈkɑːdʒɪtənt/

incogitant

無思慮な

Meaning

Lacking thought; inconsiderate or thoughtless.

Example

It was incogitant of him to make such a rude comment.

彼がそんな失礼なコメントをするのは無思慮なことでした。

C2 adjective /ɪnˈsɪpɪd/

insipid

味気ない

Meaning

lacking flavor, interest, or excitement; dull

Example

The soup was insipid and needed more seasoning.

スープは味気なく、もっと調味料が必要でした。

C2 noun /ˌɪmbəˈsɪləti/

imbecility

愚かさ

Meaning

Extreme foolishness, stupidity, or weakness of mind.

Example

The plan was abandoned due to its sheer imbecility.

その計画はその愚かさから放棄されました。

C2 adjective /ˈɪm.pi.əs/

Impious

不敬な; 冒涜的

Meaning

irreligious; lacking reverence for religion; blasphemous

Example

The impious act shocked the religious community.

不敬な行為は宗教コミュニティを驚かせました。

C2 conjunction /ˌɪnəzˈmʌtʃ æz/

inasmuch-as

なぜなら

Meaning

Because; since.

Example

He cannot attend, inasmuch as he is unwell.

彼は出席できません、なぜなら彼は病気だからです。

C2 noun /ˌɪntərˈrɛɡnəm/

interregnum

政権空白期

Meaning

A period between rulers or governments when normal leadership is suspended.

Example

The country faced instability during the interregnum after the king’s death.

国王の死後、国は政権空白期に不安定さに直面した。

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。

C2 adjective /ˌaɪ.kə.nəˈklæs.tɪk/

iconoclastic

確立された信念、伝統、または価値観に対して攻撃的または拒絶的な特徴

Meaning

Characterized by attacking or rejecting cherished beliefs, traditions, or established values.

Example

Her iconoclastic views challenged the conventional wisdom of the industry.

彼女のアイコノクラスティックな見解は業界の従来の知恵に挑戦した。

C2 noun /ˈɪnsələns/

insolence

無礼

Meaning

rude or disrespectful behavior

Example

The teacher was shocked by the student's insolence.

教師は学生の無礼に驚きました。

C2 adjective /ˈɪndələnt/

indolent

怠惰

Meaning

Wanting to avoid activity or exertion; lazy.

Example

The indolent cat slept in the sun all afternoon.

怠惰な猫は午後ずっと太陽の下で寝ていました。

C2 adjective /ɪˈnɪm.ɪ.tə.bəl/

inimitable

比類のない

Meaning

So good or unusual as to be impossible to copy; unique.

Example

His inimitable writing style made him a literary legend.

彼の比類のない筆致が彼を文学の伝説にした。

C2 noun /ɪmp/

imp

小さないたずら好きな悪魔

Meaning

a small mischievous devil or sprite; a playful troublemaker

Example

The child was acting like a little imp, hiding his toys everywhere.

その子供は小さなインプのように振る舞い、どこにでもおもちゃを隠していました。

C2 noun /ˈaɪdlər/

idler

怠け者

Meaning

A person who avoids work or spends time lazily.

Example

He was known as an idler who wasted his days.

彼は自分の時間を無駄にするアイドラーとして知られていました。

C2 noun /ɪˈmɒdəsti/

immodesty

不謹慎

Meaning

lack of modesty or decency; behavior or attitude that is overly bold or improper

Example

The article was criticized for its tone of immodesty.

その記事は不謹慎な語調で批判された。

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。

C2 adjective /ɪˈnjʊərd/

inured

慣れた

Meaning

Accustomed to something, especially something unpleasant.

Example

After years of hardship, she was inured to suffering.

長年の苦しみの後、彼女は苦しみに慣れていた。

C2 noun /ˈaɪ.kɒn/

ikon

宗教的な画像やシンボル

Meaning

A religious image or symbol, especially in the Eastern Orthodox Church.

Example

The church displayed a beautifully painted ikon of the Virgin Mary.

教会は美しく描かれた聖母マリアのアイコンを展示しました。

C2 adjective ɪˈnɛfəbl

ineffable

言葉で表現できない

Meaning

Too great or extreme to be expressed or described in words.

Example

The beauty of the landscape was ineffable.

その景色の美しさは言葉で表現できなかった。

C2 adjective /ɪnˈsɛndiˌɛri/

incendiary

扇動的な / 挑発的な

Meaning

designed to cause fires or stir up conflict

Example

The politician’s incendiary remarks angered the crowd.

政治家の挑発的な発言が群衆を怒らせた。

C2 noun /ˌɪnkəˈpæsəti/

incapacity

無能力

Meaning

the lack of ability, power, or fitness to do something

Example

His mental incapacity prevented him from making important decisions.

彼の精神的無能力は、重要な決定を下すのを妨げました。

C2 verb /ˌɪntərˈmɪt/

intermit

中断する

Meaning

To suspend or stop for a time; to pause intermittently.

Example

The rain would intermit and then start again.

雨は中断し、再び始まる。

C2 noun /ˈɪn.fɪ.del/

Infidel

異教徒

Meaning

a person who does not believe in religion or whose religious beliefs differ from one's own

Example

In historical contexts, crusaders often referred to their enemies as infidels.

歴史的な文脈では、十字軍はしばしば自分たちの敵を異教徒と呼んでいました。

C2 adjective /ˌɪntərˈniːsaɪn/

internecine

内部紛争

Meaning

Relating to conflict within a group, often causing mutual destruction.

Example

The internecine conflict weakened the organization from within.

内部紛争は組織を内部から弱体化させた

C2 adjective /ɪnˈtɛmpərət/

intemperate

不節制な

Meaning

Lacking self-control; immoderate, especially in indulgence.

Example

The politician's intemperate remarks caused controversy.

政治家の不節制な発言は論争を引き起こした。

C2 verb /ɪnˈdɒktrɪˌneɪt/

indoctrinate

教義を押し付ける

Meaning

To teach someone to fully accept a set of beliefs or ideas without question.

Example

The regime tried to indoctrinate the youth with propaganda.

その政権は宣伝を通じて若者を洗脳しようとした。

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 verb /ɪmˈpjuːn/

impugn

Meaning

to dispute the truth, validity, or honesty of a statement or motive

Example

The lawyer tried to impugn the credibility of the witness.

C2 noun /ɪˌluːmɪˈnɑːti/

illuminati

イルミナティ

Meaning

a group of people claiming to have special enlightenment or secret knowledge, often linked to conspiracies

Example

Many conspiracy theories involve the Illuminati as a secret world-controlling group.

多くの陰謀論はイルミナティを世界を支配する秘密のグループとして扱っている。

C2 adjective /ɪˈmɪsəbl/

immiscible

不混和

Meaning

Describes liquids that do not mix together.

Example

Oil and water are immiscible liquids.

油と水は不混和の液体です。

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。

C2 adjective /ɪnˈæpt/

Inapt

不適切; 不適当

Meaning

not suitable; inappropriate; unfit

Example

His comment was inapt for the formal meeting.

彼のコメントは正式な会議には不適切でした。

C2 adjective /aɪˈsɒ.krə.nəs/

isochronous

等時間間隔で発生する

Meaning

Occurring at equal time intervals; in unison or synchrony.

Example

The pendulum swings are isochronous, repeating at equal intervals.

振り子の動きは等時性があり、等しい間隔で繰り返されます。

C2 noun /ˌɪməʊˈbɪləti/

immobility

不動

Meaning

The state of being unable to move.

Example

After the accident, she suffered from immobility in her legs.

事故の後、彼女は足の不動に苦しみました。

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。

C2 verb ˈɪn.kʌl.keɪt

inculcate

教え込む

Meaning

Instill an attitude, idea, or habit by persistent instruction; to teach and impress by frequent repetitions.

Example

Parents should inculcate good values in their children.

親は子供たちに良い価値観を教え込むべきだ。

C2 verb /ɪnˈfætʃueɪt/

infatuate

夢中にさせる

Meaning

to inspire with an intense but short-lived passion or admiration

Example

He was infatuated with her beauty.

彼は彼女の美しさに夢中でした。

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。

C2 noun /ɪnˈtɜːrmənt/

interment

埋葬

Meaning

The act of burying a dead body in a grave or tomb.

Example

The interment took place at the family cemetery.

埋葬は家族の墓地で行われました。

C2 adjective /ɪnˈɡreɪʃiˌeɪtɪŋ/

ingratiating

お世辞を言う

Meaning

Charming or flattering in a way intended to gain favor.

Example

His ingratiating smile made everyone trust him quickly.

彼のお世辞を言う笑顔は、すべての人々に彼を素早く信頼させた。

C2 noun /ˌɪkθiˈɒlədʒɪst/

ichthyologist

魚類学者

Meaning

A scientist who studies fish.

Example

The ichthyologist discovered a new species of fish in the river.

魚類学者は川で新しい魚の種を発見しました。

C2 adjective /ˌɪnæprɪˈhɛnsəbl/

inapprehensible

理解不能

Meaning

not understandable; incomprehensible

Example

The concept was so abstract that it seemed inapprehensible to most students.

その概念は非常に抽象的で、ほとんどの学生には理解できないように思えた。

C2 adjective /ɪnˈsuːsiənt/

insouciant

無頓着

Meaning

Showing a casual lack of concern; carefree.

Example

He gave an insouciant shrug and walked away.

彼は無頓着に肩をすくめて、歩き去った。

C2 noun /ɪnˌtɛl.ɪˈdʒɛntsi.ə/

intelligentsia

インテリゲンチャ

Meaning

The group of people engaged in intellectual and cultural pursuits in a society.

Example

The intelligentsia played a key role in shaping public opinion.

インテリゲンチャは、世論形成において重要な役割を果たした。

C2 noun /ˌɪnkænˈteɪʃən/

incantation

呪文

Meaning

a series of words used as a magic spell or charm

Example

The wizard chanted an incantation to summon the spirits.

魔法使いは霊を呼び出すために呪文を唱えました。

C2 verb /ɪˈnjʊər/

inure

慣れる

Meaning

To become accustomed to something, especially something unpleasant.

Example

Soldiers quickly became inured to the harsh conditions.

兵士たちはすぐに過酷な状況に慣れました。

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 noun /ˈɪrɪtənsi/

irritancy

苛立ち

Meaning

the quality or state of causing irritation; legal or formal invalidation

Example

The constant noise became an irritancy to the neighbors.

絶え間ない騒音は隣人にとって苛立ちの原因となりました。

C2 adjective /ɪnˈfɜːrnəl/

infernal

地獄の

Meaning

relating to hell; extremely troublesome or annoying

Example

The workers complained about the infernal noise from the construction site.

労働者たちは建設現場からの地獄のような騒音について文句を言った。

C2 noun /ɪnˈtɛɡ.jʊ.mənt/

integument

外皮

Meaning

A natural outer covering, such as skin, shell, or rind.

Example

The snake sheds its integument as it grows.

ヘビは成長するにつれて外皮を脱ぎます。

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。

C2 adjective /ˌɪrɛvəˈrɛnʃəl/

irreverential

無礼な

Meaning

Showing a lack of respect for things that are generally taken seriously.

Example

His irreverential humor often shocked traditional audiences.

彼の無礼なユーモアはしばしば伝統的な観客を驚かせました。

C2 adjective /ɪmˌpɜːrˈsweɪdəbl/

impersuadable

説得できない

Meaning

not able to be convinced or persuaded

Example

She remained impersuadable despite all our arguments.

彼女はすべての議論にもかかわらず説得できなかった。

C2 adjective /ˌɪrɪˈmiːdiəbl̩/

irremediable

修復不可能

Meaning

Impossible to cure, repair, or remedy.

Example

The damage to the ancient manuscript was irremediable.

古代の写本への損傷は修復不可能でした。

C2 adjective /ɪmˈpɒndərəbl̩/

imponderable

計り知れない

Meaning

Something difficult or impossible to estimate, assess, or understand

Example

The outcome of the election depends on many imponderable factors.

選挙の結果は、多くの計り知れない要因に依存しています。

C2 noun /ɪnˈkwɪzɪtər/

inquisitor

尋問者

Meaning

A person who asks many questions, often in an official or harsh manner.

Example

The inquisitor demanded detailed answers from the witness.

尋問者は証人から詳細な回答を要求しました。

C2 adjective /ˌɪnsəˈluːbriəs/

insalubrious

不健康

Meaning

Unhealthy or not conducive to well-being.

Example

They moved out of the insalubrious neighborhood for the sake of their health.

彼らは健康のために不健康な地域から引っ越しました

C2 noun /ˌɪntərpəˈzɪʃən/

interposition

介入

Meaning

The act of intervening or coming between two things, often to influence or prevent an outcome.

Example

The manager’s interposition prevented a heated argument from escalating.

マネージャーの介入は、激しい議論がエスカレートするのを防ぎました。

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 /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。

C2 noun /ɪnˈɡrætɪˌtjuːd/

ingratitude

恩知らず

Meaning

Lack of gratitude; failure to show thanks or appreciation.

Example

His ingratitude hurt her feelings after all she had done for him.

彼の恩知らずは、彼女が彼のために多くのことをした後、彼女の気持ちを傷つけた。

C2 adjective /ˌɪnɪˈsɛnʃəl/

inessential

本質的でない

Meaning

not necessary or important; not essential

Example

The report removes all inessential details to stay focused.

その報告書は焦点を保つために本質的でない詳細を削除している。

C2 adjective /ˌɪndɪˈfætɪɡəbl̩/

indefatigable

疲れ知らず

Meaning

persisting tirelessly; incapable of being fatigued

Example

Her indefatigable spirit kept the team motivated during the long project.

彼女の疲れ知らずの精神が、長いプロジェクトを通してチームを励ましました。

C2 verb /ɪˈluːmɪn/

illumine

照らす

Meaning

to light up or make clear

Example

The rising sun illumined the mountain peaks.

昇る太陽が山頂を照らした。

C2 verb /ˈɪndjʊˌreɪt/

indurate

硬化する

Meaning

To harden or make something physically or emotionally tough.

Example

Years of hardship indurated his spirit.

長年の困難が彼の精神を鍛えました。

C2 noun /ɪnˈfriːkwəns/

infrequence

稀少性

Meaning

The state of occurring rarely or at long intervals.

Example

The infrequence of their meetings made it hard to maintain close ties.

彼らの会議の稀少性は、親密な関係を維持するのを難しくしていました。

C2 adverb /ˌɪnəzˈmʌtʃ/

inasmuch

〜という点で

Meaning

To the extent that; considering that.

Example

Inasmuch as you are their teacher, you should guide them carefully.

あなたが彼らの教師である限り、彼らを慎重に指導するべきです。

C2 noun /ˈɪntərˌloʊpər/

interloper

干渉者

Meaning

A person who becomes involved in a situation or place where they are not wanted.

Example

He felt like an interloper at the private family gathering.

彼はプライベートな家族の集まりで干渉者のように感じた。

C2 adjective /ɪnˈɛk.wɪ.tə.bəl/

inequitable

不公平な

Meaning

Not fair or just; lacking in fairness or equality.

Example

The distribution of resources was inequitable among the workers.

リソースの分配は労働者の間で不平等でした。

C2 noun /ˈɪsməs/ or /ˈɪsθməs/

isthmus

地峡

Meaning

A narrow strip of land connecting two larger land areas, often with water on either side.

Example

The Panama Canal cuts through the Isthmus of Panama.

パナマ運河はパナマの地峡を通ります。