C1 verb /ɪnˈdʌkt/

induct

Meaning

to formally admit someone into a position, organization, or office

Example

She was inducted into the university's honor society.

B2 adjective /ˌɪntərˈmiːdiət/

intermediate

中級

Meaning

Coming between two things in time, place, or order; in the middle level or stage.

Example

She is taking an intermediate-level French course.

彼女は中級のフランス語コースを受講しています。

C1 adjective /ɪnˈdɪɡnənt/

indignant

憤慨した

Meaning

Feeling or showing anger at something considered unfair or unjust.

Example

She was indignant when accused of cheating.

彼女は不正行為を非難されたとき、憤慨していた。

C1 adverb /ˈɪnwərdli/

inwardly

内面的に

Meaning

In the mind or spirit; not outwardly visible.

Example

She smiled outwardly but inwardly she was worried.

彼女は外見では微笑んだが、内心では心配していた。

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。

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 /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。

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。

A2 verb /ɪnˈkluːd/

include

含む

Meaning

to have as part of a whole; to contain or comprise

Example

The price includes all taxes.

価格にはすべての税金が含まれています。

B2 adjective ˈɪn.tɪ.ɡrəl

integral

不可欠

Meaning

Necessary to make a complete whole; essential or fundamental.

Example

Exercise is an integral part of a healthy lifestyle.

運動は健康的なライフスタイルの不可欠な部分です。

B2 noun /ɪnˈvɒlvmənt/

involvement

関与

Meaning

the act of taking part in something

Example

His involvement in the project was crucial.

彼のプロジェクトへの関与は重要だった。

C1 verb /ɪnˈvoʊk/

invoke

呼び出す

Meaning

to call upon a higher power, authority, or principle for help, support, or justification

Example

The lawyer invoked the constitution to defend his client.

弁護士は憲法を引き合いに出して自分のクライアントを守った。

C1 adjective /ɪˈlɒdʒ.ɪ.kəl/

Illogical

非論理的

Meaning

not reasonable or sensible; lacking logic

Example

It would be illogical to go swimming in such cold weather.

こんなに寒い天気で泳ぐのは非論理的です。

C1 adjective ɪn ˈfleɪ.ʃə.ner.i

inflationary

インフレ的

Meaning

Characterized by or tending to cause monetary inflation; relating to rising prices.

Example

The government took measures to control inflationary pressures.

政府はインフレ圧力を制御するために措置を講じた。

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。

B2 verb /ɪmˈprɪzən/

imprison

投獄する

Meaning

to put someone in prison; to confine or restrict someone's freedom

Example

The judge imprisoned the criminal for five years.

裁判官は犯罪者を5年間投獄しました。

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 ˌɪn.təˈdɪs.ɪ.plɪ.nər.i

interdisciplinary

学際的

Meaning

Relating to more than one branch of knowledge.

Example

The interdisciplinary approach in education enhances problem-solving skills.

教育における学際的アプローチは、問題解決スキルを向上させる。

C2 noun /ˈɪmɪˌteɪtər/

imitator

模倣者

Meaning

a person who copies the behavior, style, or actions of others

Example

He became famous as an imitator of popular singers.

彼は人気のある歌手の模倣者として有名になった。

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。

B2 adjective /ˈaɪsi/

Icy

氷のような; 非常に冷たい; 敵対的

Meaning

extremely cold; covered with ice; unfriendly or hostile

Example

The icy wind made everyone shiver.

氷のような風が皆を震えさせた。

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。

C1 noun /ɪnˈsɜːrdʒənt/

insurgent

反乱者

Meaning

A person who rises in revolt against authority or government.

Example

The army arrested several insurgents after the attack.

軍隊は攻撃後、数人の反乱者を逮捕した。

C1 noun /ˈɪnlɛt/

inlet

入り江

Meaning

A small arm of the sea, a lake, or a river; an opening or passage for entry.

Example

The boat entered a narrow inlet along the coast.

船は海岸沿いの狭い入り江に入った。

B1 noun /ˈɪn.flu.əns/

Influence

影響; 力

Meaning

the capacity to have an effect on the character, development, or behavior of someone or something

Example

The teacher's positive influence helped the student overcome his learning difficulties.

教師の積極的な影響が生徒の学習の問題を克服する手助けをしました。

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 adjective ˌɪn.ɪ.fɪˈkeɪ.ʃəs

inefficacious

効果がない

Meaning

Not producing any or the desired effect; ineffective.

Example

The treatment was inefficacious in curing the disease.

その治療法は病気の治癒に効果がありませんでした。

C1 adjective /ˌɪrɪˈprɛsəbl̩/

irrepressible

抑制できない

Meaning

Impossible to control or restrain.

Example

She had an irrepressible urge to laugh during the speech.

彼女はスピーチ中に抑制できない笑いの衝動を隠すことができませんでした。

C2 noun /ˈɪrɪɡənt/

irrigant

灌漑液

Meaning

A liquid used for irrigation, especially in medical or agricultural contexts.

Example

The doctor used a sterile irrigant during the procedure.

医師は手術中に無菌の灌漑液を使用しました。

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 /ɪˈrɛpərəbəl/

Irreparable

修復不可能

Meaning

impossible to repair or fix; permanent damage that cannot be undone

Example

The accident caused irreparable damage to his spine.

その事故は彼の背骨に修復不可能な損傷を与えました。

B2 noun ɪnˈdʒʌstɪs

injustice

不正義

Meaning

Lack of fairness or justice; the practice of being unjust or unfair.

Example

The story portrays the injustices faced by the common people.

物語は一般の人々が直面する不正義を描いています。

B2 noun /ˌɪn.dɪˈkeɪ.ʃən/

Indication

指示; 合図

Meaning

a sign or piece of information that indicates something; a suggestion or hint

Example

The dark clouds were a clear indication that a storm was approaching the area.

暗い雲は嵐がその地域に近づいていることを示す明確な指示でした。

C1 adjective ɪnˈtrɪn.zɪk

intrinsic

内在的, 本質的, 自然な

Meaning

Belonging naturally; essential. Existing as a natural or basic part of something.

Example

Creativity is an intrinsic quality of a great artist.

創造性は偉大なアーティストの内在的な資質です。

B2 adverb /ɪmˈpɔːtəntli/

importantly

重要な方法で

Meaning

in a way that is of great significance or value

Example

Importantly, the report highlights the need for immediate action.

重要な方法で、報告書は即時の行動の必要性を強調しました。

C2 noun /ˌɪnvəˈluːʃən/

involution

インヴォリューション

Meaning

a complicated or intricate form or state; in biology, the shrinking of an organ after its function has finished

Example

The story was full of involution, making it hard to follow.

その話はインヴォリューションで満ちており、追うのが難しかった。

C1 adjective /ˌɪn.səbˈstæn.ʃəl/

insubstantial

不十分な

Meaning

Lacking strength, substance, or solidity.

Example

The evidence provided was insubstantial and unconvincing.

提供された証拠は不十分で説得力がなかった。

C1 adjective /ˈɜːrksəm/

irksome

迷惑的

Meaning

annoying or irritating

Example

Waiting in a long line is one of the most irksome tasks.

長い列に並んでいるのは、最も迷惑な作業の一つです。

C2 noun /ɪnˈvaɪtər/

invitor

招待者

Meaning

a person who invites someone to an event, meeting, or place

Example

The invitor greeted all the guests warmly at the entrance.

招待者は入口で客を温かく迎えた。

C2 adjective /ˌɪrɪˈprəʊtʃəbl̩/

irreproachable

非の打ち所がない

Meaning

Beyond criticism; faultless.

Example

The judge was known for his irreproachable integrity.

その裁判官は非の打ち所がない誠実さで知られていた。

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。

C1 adjective /ɪnˈtræk.tə.bəl/

intractable

管理不能

Meaning

Difficult or impossible to manage, control, or solve.

Example

The conflict has become an intractable problem.

その対立は管理不能な問題になった。

C2 adverb /ˈɪntʃmiːl/

inchmeal

少しずつ

Meaning

Gradually, little by little.

Example

The old castle fell inchmeal into ruin.

その古い城は少しずつ廃墟になった。

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 noun /ˈɪm.pæs/

impasse

行き詰まり

Meaning

A situation where no progress is possible.

Example

The negotiations reached an impasse, delaying the agreement.

交渉は行き詰まり、合意が遅れた。

C1 verb ɪˈnɔː.ɡjə.reɪ.tɪd

inaugurated

開会

Meaning

Begin or introduce (a system, policy, or period) formally.

Example

The organization was inaugurated officially.

その組織は正式に開会されました。

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。

B2 noun /ˈɪnfənt/

infant

乳児

Meaning

A very young child or baby.

Example

The infant was sleeping peacefully in the cradle.

乳児はゆりかごで静かに眠っていました。

C2 adjective/verb /ɪnˈkɑːrneɪt/

incarnate

具現化

Meaning

to embody or represent in human form; in flesh

Example

She is kindness incarnate.

彼女は親切さの具現化です。

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。

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 verb ˈɪmplɪment

implement

実施する

Meaning

To put a decision or plan into effect; to execute or apply.

Example

Implementing educational policies is essential for progress.

教育政策を実施することは進歩にとって重要です。

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 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 noun /ˈɪndələns/

indolence

怠惰

Meaning

Avoidance of activity or exertion; laziness.

Example

His indolence kept him from finishing the project on time.

彼の怠惰は彼が時間通りにプロジェクトを完成させるのを妨げました。

C1 noun /ˌɪnkoʊˈhɪrəns/

incoherence

不整合

Meaning

The quality of being unclear, confused, or lacking logical connection.

Example

His speech was full of incoherence and difficult to follow.

彼のスピーチは不整合で、理解するのが難しかった。

C2 noun /ˈɪd.i.ə.si/

Idiocy

愚かさ

Meaning

extremely stupid behavior or actions; foolishness

Example

The decision to ignore safety protocols was pure idiocy that endangered everyone.

安全プロトコルを無視する決定は、すべての人を危険にさらす純粋な愚かさでした。

C2 adjective /ɪˈmɒdɪst/

immodest

傲慢 / 不適切

Meaning

lacking humility or decency; excessively proud or improper

Example

His immodest remarks offended the audience.

彼の傲慢な発言は観客を不快にさせた。

C1 noun /ˌɪn.trəˈspek.ʃən/

introspection

内省

Meaning

The examination or observation of one's own mental and emotional processes; self-reflection.

Example

Through introspection, she gained insight into her emotions.

内省を通じて、彼女は自分の感情に対する深い洞察を得ました。

C2 adjective /ɪnˈvɛtərət/

inveterate

常習的な

Meaning

having a long-established habit, activity, or interest that is unlikely to change

Example

He is an inveterate reader who spends hours in the library every day.

彼は毎日数時間を図書館で過ごす常習的な読者です。

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。

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。

C2 verb /ɪˈniː.bri.eɪt/

inebriate

Meaning

to intoxicate; to make someone drunk

Example

The strong wine was enough to inebriate even the most experienced drinker.

C2 noun /ˈaɪ.lət/

islet

小島

Meaning

A very small island.

Example

The fishermen rested on a tiny islet before continuing their journey.

漁師たちは旅を続ける前に小さな島で休憩しました。

C1 adjective /ɪnˈstɪŋk.tɪv/

instinctive

本能的, 自然な, 自動的

Meaning

Based on instinct; done without conscious thought; natural and automatic.

Example

His instinctive reaction saved his life.

彼の本能的な反応は彼の命を救った。

C1 adjective ˌɪn.tə.dʒen.əˈreɪ.ʃən.əl

intergenerational

世代間、異なる世代間で発生する

Meaning

Existing or occurring between different generations of a family.

Example

Intergenerational wisdom ensures cultural continuity.

インタージェネレーショナルな知恵は文化的継続性を確保する。

C1 noun /ɪnˈædɪkwəsi/

inadequacy

不十分さ

Meaning

lack of sufficient ability, quality, or strength; a feeling of not being good enough

Example

She struggled with feelings of inadequacy at work despite her strong qualifications.

十分な資格があるにもかかわらず、彼女は職場で不十分さを感じていた。

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。

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.

C1 verb /ɪmˈplɔːr/

implore

Meaning

To beg someone earnestly or desperately to do something.

Example

She implored him to stay with her.

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 noun /ɪnˈspɛktər/

inspector

検査官

Meaning

An official employed to ensure regulations are obeyed or standards are met.

Example

The inspector carefully checked the restaurant's kitchen for hygiene standards.

検査官はレストランのキッチンを衛生基準に従って慎重に確認しました。

C1 noun /ˌɪntərˈmɪʃən/

intermission

休憩

Meaning

A pause or break, especially during a performance or event.

Example

The play had a twenty-minute intermission.

その劇には20分間の休憩がありました。

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。

B2 verb /ɪnˈheɪl/

inhale

吸う

Meaning

to breathe in; to draw air into the lungs

Example

Take a deep breath and inhale slowly.

深く息を吸い、ゆっくり吸い込みます。

C1 adjective /ˌɪlɪˈdʒɪtɪmət/

illegitimate

不正

Meaning

Not authorized by law, rules, or standards; not recognized as valid.

Example

The court ruled the contract to be illegitimate.

裁判所は契約が不正であると判断しました。

C1 verb /ˈɪnfɪltreɪt/

infiltrate

浸透

Meaning

to secretly enter or gain access to a place or group

Example

The spies managed to infiltrate the enemy base.

スパイたちは敵基地に infiltrate できた。

C1 noun /ˌɪntərˌɒpərəˈbɪləti/

interoperability

相互運用性

Meaning

The ability of computer systems or software to exchange and make use of information.

Example

The interoperability of different software systems ensures seamless workflow.

異なるソフトウェアシステムの相互運用性は、シームレスな作業の流れを確保します。

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。

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。

B2 noun ˌɪm.plɪˈkeɪ.ʃən

implication

含意

Meaning

A conclusion that can be drawn from something although it is not explicitly stated; a likely consequence.

Example

The implication of climate change is severe.

気候変動の含意は深刻です。

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。

A1 preposition/adverb/adjective/noun /ˌɪnˈsaɪd/

inside

幸せ

Meaning

Situated within something; the inner part of something.

Example

She waited inside the house until the rain stopped.

彼女は賞を受け取ったとき、自分の幸せを隠すことができませんでした。

B2 noun /aɪˈdiː/

id

身分証明書

Meaning

identification; a document or number used to prove who someone is

Example

Please show your ID at the entrance.

入口で身分証明書を提示してください。

C2 noun /ɪˈnɪkwɪti/

iniquity

不正

Meaning

Immoral or grossly unfair behavior.

Example

The dictator's regime was marked by corruption and iniquity.

独裁者の政権は腐敗と不正で特徴づけられていました。

A1 noun /ˈaɪs kriːm/

Ice-cream

アイスクリーム

Meaning

a frozen sweet dessert made from dairy products, usually served cold

Example

Children love to eat ice-cream on hot summer days.

子供たちは暑い夏の日にアイスクリームを食べるのが好きです。

B2 adjective ɪˈmɜː.sɪv

immersive

没入型

Meaning

Providing, involving, or characterized by deep absorption or immersion in something.

Example

Virtual reality creates an immersive learning environment.

仮想現実は没入型の学習環境を作り出します。

C2 noun /ɪmˈprɑːvɪdəns/

improvidence

不注意

Meaning

Lack of foresight or care for future needs.

Example

His improvidence led to financial difficulties.

彼の不注意が彼を財政的な困難に追い込んだ。

C1 noun /ˈaɪsətəʊp/

isotope

同位体

Meaning

Atoms of the same element with equal number of protons but different numbers of neutrons.

Example

Carbon-14 is a radioactive isotope used in dating fossils.

炭素-14は化石の年代を測定するために使用される放射性同位体です。

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。

B2 adverb /aɪˈrɒnɪkli/

ironically

皮肉にも

Meaning

in a way that is contrary to what is expected or intended

Example

Ironically, the fire station burned down.

皮肉にも、消防署が焼け落ちた。

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。

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。

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 verb /ˈɪntərˌdɪkt/

interdict

禁じる

Meaning

to prohibit or forbid something by authoritative order, often by law or decree

Example

The court moved to interdict the sale of the illegal goods.

裁判所は違法な商品の販売を禁じることを決定しました。

C2 noun /ˌɪn.ʌnˈdeɪ.ʃən/

inundation

洪水

Meaning

The act of flooding or overwhelming with water or things.

Example

The town suffered from a severe inundation after the heavy rains.

町は大雨後にひどい洪水に見舞われました。

B1 adjective /ˈɪnər/

inner

内面的

Meaning

Located inside or closer to the center; relating to one’s thoughts or feelings.

Example

She shared her inner thoughts with her best friend.

彼女は最良の友達に内面的な思いを共有しました。

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 adjective /ɪnˈtrɛpɪd/

intrepid

勇敢な

Meaning

fearless and adventurous, often used humorously

Example

The intrepid traveler explored the jungle alone.

その勇敢な旅行者は一人でジャングルを探検した。

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。

C1 noun /ˌɪnɪkˈspɪəriəns/

inexperience

未経験

Meaning

Lack of knowledge or skill in a particular activity or field.

Example

His inexperience in handling negotiations was evident.

交渉における彼の未経験は明らかでした。

B2 adjective /ɪnˈtɒlərənt/

intolerant

不寛容

Meaning

unwilling to accept or respect beliefs or behavior different from one's own

Example

He is intolerant of any opinion that differs from his own.

彼は自分の意見と異なる意見を全く容認しません。

C1 verb /ɪˈnɔːɡjʊreɪt/

inaugurate

Meaning

To formally begin or introduce something, especially with a ceremony.

Example

The mayor will inaugurate the new bridge tomorrow.

B1 noun ˌɪndɪˈpendəns

independence

独立

Meaning

The fact or state of being independent; freedom from outside control; not being subject to another's authority.

Example

Independence inspired the movement.

独立は運動を刺激した。

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。

C2 adjective /ɪˈlɪbərəl/

illiberal

非リベラル

Meaning

Opposed to liberal principles; restricting freedom of thought or behavior.

Example

The government was criticized for its illiberal policies.

政府はその非リベラルな政策について批判された。

C1 noun /ɪnˈtɛstɪn/

intestine

腸

Meaning

The part of the digestive system where food is digested and absorbed, extending from the stomach to the anus.

Example

The doctor explained how nutrients are absorbed in the small intestine.

医者は、小腸で栄養素がどのように吸収されるかを説明しました。

B2 adjective /ˈaɪ.dəl/

Idle

怠惰な; 非活動的な; 使われていない

Meaning

lazy; inactive; not working or being used

Example

The factory workers were idle during the strike.

工場の労働者はストライキ中に暇だった。

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 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。

C1 adjective /ˌɪnɑːrˈtɪkjʊlət/

inarticulate

言葉が不明瞭

Meaning

Unable to express oneself clearly or effectively in speech or writing.

Example

She became inarticulate with emotion during the speech.

彼女はスピーチ中に感情で言葉が不明瞭になった。

C1 adverb ɪnˈtrɪn.zɪ.kli

intrinsically

本質的に

Meaning

In a way that is naturally or inherently part of something's essential nature.

Example

Some people are intrinsically motivated to learn.

いくつかの人々は本質的に学ぶことに動機づけられている。

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 noun /ˌɪndɪɡˈneɪʃən/

indignation

憤慨

Meaning

Strong displeasure or anger caused by something unjust, offensive, or insulting.

Example

Public indignation grew after the unfair verdict.

不公平な判決の後で、公衆の憤慨が高まった。

C1 verb /ɪnˈkɜːr/

incur

負う

Meaning

To bring upon oneself something undesirable, usually as a result of actions.

Example

He incurred a fine for parking in the wrong place.

彼は間違った場所に駐車して罰金を科せられた。

C2 adjective /ɪnˈkoʊ.ɪt/ or /ɪnˈkoʊ.eɪt/

inchoate

未完成

Meaning

Just begun and not fully formed; rudimentary.

Example

His inchoate ideas needed more research to be developed.

彼の未完成のアイデアは、さらに開発するためにもっと研究が必要だった。

C1 adjective /ɪnˈfæləbl̩/

infallible

間違いない

Meaning

incapable of making mistakes or being wrong

Example

Her judgment seemed infallible in matters of finance.

彼女の判断は財務問題において間違いないように見えた。

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。

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。

B2 adjective ˌɪnɪˈfɛktɪv

ineffective

効果がない

Meaning

Not producing any significant or desired effect; not achieving the intended result.

Example

Rote learning often proves to be ineffective.

暗記学習はしばしば効果がないことが証明されます。

C1 verb /aɪˈdiː.ə.laɪz/

idealize

理想化する

Meaning

To regard or represent something as perfect or better than it really is.

Example

Children often idealize their parents.

子供たちはしばしば親を理想化します。