C1 noun /ɪmˈpɜː.mə.nəns/

impermanence

無常

Meaning

The state or fact of lasting for only a limited period of time.

Example

The philosophy of Buddhism emphasizes the impermanence of life.

仏教の哲学は、人生の無常性を強調します。

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.

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。

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。

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 /ˈɪndɪkənt/

indicant

指標

Meaning

Something that indicates or points to a fact or condition.

Example

High fever is often an indicant of infection.

高熱はしばしば感染の指標となります。

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。

B1 adjective /ɪˈliː.ɡəl/

illegal

違法

Meaning

Not allowed by law; unlawful.

Example

It is illegal to drive without a valid license.

有効な免許なしで運転することは違法です。

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。

C1 adjective /ˌɪrɪˈvɜːrsəbl/

irreversible

不可逆な

Meaning

Not able to be undone, changed, or reversed.

Example

The damage caused by the fire was irreversible.

火事によって生じた損害は不可逆でした。

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。

C1 adjective /ˌɪntəˈrɑːɡətɪv/

interrogative

疑問の

Meaning

Relating to or conveying a question; in grammar, used to form questions.

Example

She raised an interrogative eyebrow when she heard the news.

彼女はそのニュースを聞いて疑問のまなざしを向けました。

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。

B2 noun /ɪnˌtɜːrprəˈteɪʃən/

interpretation

解釈

Meaning

the action of explaining the meaning of something

Example

The teacher gave her own interpretation of the poem.

教師は詩の自分の解釈を示しました。

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。

C1 adjective /ˌaɪ.di.əˈlɒdʒ.ɪ.kəl/

ideological

イデオロギー的

Meaning

Relating to or based on a system of ideas or beliefs.

Example

The two parties are divided by deep ideological differences.

二つの党は深いイデオロギー的な違いによって分裂している。

C2 noun /ɪnˈsuːsiəns/

insouciance

無関心

Meaning

Casual lack of concern; indifference.

Example

She carried herself with an air of insouciance, unbothered by the challenges ahead.

彼女は無関心な態度で歩いていた、前にある挑戦を気にせずに。

C1 verb /ɪmˈpɑːrt/

impart

伝える

Meaning

to make information known; to bestow or communicate

Example

The teacher imparted valuable knowledge to her students.

教師は生徒に貴重な知識を授けました。

B2 adjective /ˈɪrɪteɪtɪd/

irritated

いらいらした

Meaning

feeling annoyed or impatient; having inflamed or sore physical condition

Example

She felt irritated by the constant noise outside her window.

窓の外の絶え間ない騒音に彼女はいらいらした。

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。

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。

B2 noun /ˌɪnəˈbɪləti/

inability

無能

Meaning

the state of being unable to do something

Example

His inability to make decisions affected his career.

彼の意思決定の無能さは彼のキャリアに影響を与えた。

B1 noun /ɪnˈʃʊərəns/

insurance

保険

Meaning

An arrangement by which a company provides compensation for loss, damage, or illness in return for a premium.

Example

He bought health insurance to cover medical expenses.

彼は医療費をカバーするために健康保険に加入しました。

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 ˈɪn.lənd

Inland

内陸

Meaning

Situated in the interior of a country; away from the coast.

Example

Inland transport boosts local trade.

内陸輸送は地元の貿易を促進します。

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。

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 /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。

C1 noun /ˈɪn.tə.lekt/

intellect

知能

Meaning

The ability to think, reason, and understand objectively.

Example

Her intellect is admired by all her colleagues.

彼女の知能はすべての同僚に賞賛されています。

C1 verb /ɪnˈtɪmɪdeɪt/

intimidate

Meaning

To frighten or overawe someone, especially to make them do what one wants.

Example

The bully tried to intimidate the smaller kids.

C1 verb /ˈɪnstɪˌɡeɪt/

instigate

扇動する

Meaning

To bring about or initiate an action, often something negative.

Example

He was accused of instigating the riot.

彼は暴動を扇動したとして告発された。

C1 noun /ˌɪn.dʒəˈnjuː.ɪ.ti/

ingenuity

独創性

Meaning

The quality of being clever, original, and inventive.

Example

His ingenuity led to groundbreaking innovations.

彼の創意工夫は画期的な革新を生み出しました。

C2 adjective /ˌɪɡ.nəˈmɪn.i.əs/

ignominious

不名誉な

Meaning

Marked by shame, disgrace, or humiliation.

Example

The team suffered an ignominious defeat in the finals.

チームは決勝で不名誉な敗北を喫した。

C1 adjective /ɪmˈpæʃənd/

impassioned

情熱的な

Meaning

Filled with or showing great emotion.

Example

She gave an impassioned speech about human rights.

彼女は人権について情熱的なスピーチを行いました。

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 adjective /ˌɪndɪˈvɜːrtɪbəl/

indivertible

Meaning

Not able to be turned aside or diverted.

Example

The judge's indivertible attention was on the case.

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 /ˌɪnkənˈsɪstənt/

inconsistent

一貫性がない

Meaning

Not staying the same throughout; lacking harmony or regularity.

Example

His answers were inconsistent and confusing.

彼の答えは一貫性がなく、混乱を招いた。

C2 noun /ɪˈrʌp.ʃən/

Irruption

突然の暴力的な侵入; 侵略または襲撃; 突然の噴出または噴火

Meaning

a sudden violent entry; an invasion or raid; a sudden outburst or eruption

Example

The army's irruption into enemy territory caught the opposing forces completely off guard.

軍隊の敵領土へのイラプションは、相手の力を完全に不意を突いた。

C1 adjective /ɪˈneɪn/

inane

無意味な, 馬鹿な

Meaning

lacking sense, meaning, or significance; silly or pointless

Example

The movie was criticized for its inane dialogue.

その映画は無意味なセリフで批判された。

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 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 verb /ɪmˈbɛd/

imbed

埋め込む

Meaning

To fix firmly or deeply in a surrounding mass.

Example

The journalist imbedded himself with the troops to report firsthand.

ジャーナリストは部隊に埋め込まれて、最前線から報告を行った。

C1 noun /ˌɪnˈdɪsəplɪn/

indiscipline

規律の欠如

Meaning

lack of discipline or self-control; failure to obey rules or maintain order

Example

Indiscipline among the students disrupted the learning environment.

学生の規律の欠如が学習環境を乱した。

C1 adjective /ˌɪn.dɪˈspen.sə.bəl/

indispensable

不可欠

Meaning

Absolutely necessary, essential

Example

Water is indispensable for human survival.

水は人間の生存に不可欠です。

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.

C1 adjective ˌɪn.krəˈmen.təl

incremental

増分的

Meaning

Relating to or denoting an increase or addition, especially one of a series on a fixed scale; proceeding in small stages.

Example

Incremental changes ensure sustainability.

増分的な変化は持続可能性を確保します。

C2 adjective /ˌɪndɪˈsɜːrnəbl/

indiscernible

見分けがつかない

Meaning

Impossible or difficult to see, notice, or distinguish.

Example

The difference between the two shades was almost indiscernible.

二つの色調の違いはほとんど見分けがつかなかった。

B2 verb /ɪnˈsɜːrt/

insert

挿入する

Meaning

to put or place something into something else

Example

Please insert the key into the lock.

鍵をロックに挿入してください。

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。

C2 verb ˈɪnʌndeɪt

inundate

洪水で満たす、処理すべき事柄や人々で誰かまたは何かを圧倒する

Meaning

To flood; overwhelm someone or something with things or people to be dealt with

Example

The company was inundated with requests after the advertisement.

広告の後、会社はリクエストで圧倒されました。

C2 noun /ˈaɪdɪl/

idyll

田園詩的なシーン

Meaning

An extremely happy, peaceful, or picturesque episode or scene, often idealized.

Example

Their honeymoon was an idyll on a tropical island.

彼らのハネムーンは熱帯の島での田園詩的なシーンでした。

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。

C1 adjective ˌɪn.təˈmɪt.ənt

intermittent

断続的

Meaning

Happening irregularly, not continuously.

Example

The rain was intermittent throughout the day.

雨は一日中断続的でした。

C1 noun /ˈɪntərˌluːd/

interlude

間奏

Meaning

A short period of time that comes between two events; an interval.

Example

There was a brief musical interlude between the two acts of the play.

演劇の二つの幕の間に短い音楽の間奏がありました。

C2 noun /ɪˈnænɪti/

inanity

馬鹿げたこと, 空虚

Meaning

a nonsensical remark or action; silliness; emptiness

Example

The speech was full of inanities that bored the audience.

スピーチは聴衆を退屈させる馬鹿げたことだらけだった。

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。

B2 verb /ɪnˈdʌldʒ/

indulge

楽しむ

Meaning

to allow oneself to enjoy something enjoyable, often excessively

Example

He indulged in a piece of chocolate cake after dinner.

彼はディナーの後でチョコレートケーキの一切れを楽しんだ。

C1 verb ɪˈnɪʃɪeɪtɪd

initiated

開始された

Meaning

Caused a process or action to begin; started something.

Example

The project was initiated to enhance marine biodiversity.

プロジェクトは海洋生物多様性を向上させるために開始されました。

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。

B1 noun /ɪnˈvɛstər/

investor

投資家

Meaning

a person or organization that puts money into financial schemes, property, or business ventures with the expectation of achieving a profit

Example

The investor funded the startup with a large sum of money.

投資家はスタートアップに大金を投資しました。

C1 adjective /ɪnˈkɒmpɪtənt/

incompetent

Meaning

Lacking the necessary ability or skills to do something successfully.

Example

He was fired because he was incompetent at his job.

C1 noun ɪnˈflɛk.ʃən

inflection

イントネーション

Meaning

The change in pitch or tone of voice when speaking for emphasis.

Example

His inflection kept the audience engaged.

彼のイントネーションは観客を引きつけた。

B1 noun/adjective /ˈɪnstənt/

instant

瞬間

Meaning

A very short period of time; happening immediately.

Example

He replied in an instant without hesitation.

彼は躊躇うことなく瞬時に返答した。

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。

B2 noun /ɪnˈvɛstɪˌɡeɪtər/

investigator

幸福

Meaning

a person who carries out a formal inquiry or investigation

Example

The investigator gathered evidence from the crime scene.

彼女は賞を受け取ったとき、自分の幸福を隠すことができませんでした。

C1 adjective /ɪnˈveɪsɪv/

invasive

侵襲的

Meaning

Tending to spread harmfully, intruding aggressively, or encroaching beyond proper boundaries.

Example

The doctor explained that the procedure was minimally invasive.

医者は、その手順が最小限の侵襲的であることを説明しました。

C1 adjective /ɪnˈdʌldʒənt/

indulgent

寛容な

Meaning

Having a tendency to be overly generous or lenient with someone.

Example

The indulgent mother allowed her child to stay up late.

寛容な母は子供を遅くまで起きていることを許しました。

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。

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 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。

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。

B2 adjective /ɪnˈklaɪnd/

inclined

傾向がある

Meaning

having a tendency or disposition toward something

Example

He is inclined to help those in need.

彼は困っている人々を助ける傾向がある。

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 noun /ˌɪnkəmˈpliːtnəs/

incompleteness

不完全さ

Meaning

the state of not being complete or whole; lack of necessary parts or fullness

Example

The incompleteness of the report caused delays in the project.

レポートの不完全さがプロジェクトの遅れを引き起こした。

B2 adjective /ɪnˈdɪf.ər.ənt/

indifferent

無関心

Meaning

having no particular interest or concern; not caring one way or another

Example

She was indifferent to the outcome of the match.

彼女は試合の結果に無関心だった。

C1 noun /ɪˈrɛlɪvənsi/

irrelevancy

無関係性

Meaning

the state of being unrelated or unimportant to the matter at hand

Example

The judge dismissed the argument because of its irrelevancy to the case.

裁判官はその主張が事件と無関係であるとして退けた。

C2 noun (compound/erroneous entry) /ɪnˈɛksərəbl ɑːrmi/

inexorableinexorablearmy

止められない軍隊

Meaning

This appears to be a corrupted or concatenated form; interpreted as 'inexorable army' — an unstoppable or relentless force.

Example

The rebels feared the inexorable army approaching their stronghold.

反乱軍は自分たちの砦に近づいてくる止められない軍隊を恐れていた。

B2 noun /ɪˈluː.ʒən/

Illusion

幻想

Meaning

a thing that is or is likely to be wrongly perceived or interpreted; a false idea or belief

Example

The magician created a spectacular illusion that made the elephant appear to vanish.

魔術師は壮観な幻想を作り、象が消えるように見えました。

C1 noun ɪˌræʃ.ənˈæl.ɪ.ti

irrationality

非合理性, 非論理性, 不合理

Meaning

The quality of being illogical or unreasonable; lack of rational thought.

Example

His decision was driven by complete irrationality.

彼の決定は完全に非合理的でした。

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。

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。

C2 adjective ɪnˈdɒm.ɪ.tə.bəl

indomitable

不屈の

Meaning

Impossible to subdue or defeat.

Example

Her indomitable spirit helped her overcome adversity.

彼女の不屈の精神が彼女を逆境を克服させた。

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。

C1 noun /ˈɪn.tə.mə.si/

Intimacy

親密さ; 親しみ

Meaning

close familiarity or friendship; closeness; a private cozy atmosphere

Example

The couple valued the emotional intimacy they shared more than material possessions.

そのカップルは物質的な所有物よりも、共有した感情的な親密さを大切にしていました。

C1 noun /ɪnˈkɜːrʒən/

incursion

侵入

Meaning

A sudden attack or invasion into a place or territory.

Example

The army repelled the enemy incursion at the border.

軍隊は国境で敵の侵入を撃退した。

B1 noun ɪnˈven.ʃən

invention

発明

Meaning

The action of inventing something, typically a process or device.

Example

The invention revolutionized communication.

その発明はコミュニケーションを革命的に変えました。

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。

B2 adjective, noun /ɪzˈreɪli/

israeli

イスラエルの

Meaning

relating to Israel or its people; a person from Israel

Example

She works for an Israeli company.

彼女はイスラエルの会社で働いています。

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。

B1 adjective /ɪmˈpeɪʃənt/

impatient

イライラ

Meaning

Not able to wait calmly; restless and eager for something to happen.

Example

She grew impatient while waiting in the long queue.

彼女は長い列で待っている間にイライラしてきた。

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。

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 /ɪnˈseɪʃəbl̩/

insatiable

満たされない

Meaning

impossible to satisfy; always wanting more

Example

Her insatiable curiosity drove her to read every book in the library.

彼女の満たされない好奇心は、図書館のすべての本を読むように彼女を駆り立てた。

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。

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。

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 /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。

A2 noun /ˈaɪ.lənd/

Island

島

Meaning

a piece of land completely surrounded by water

Example

We visited a beautiful island during our vacation.

私たちは休暇中に美しい島を訪れました。

B1 noun ˈɪmpækt

impact

影響

Meaning

A strong effect or influence; the action of one object coming forcibly into contact with another.

Example

The decision had great impact.

その決定は大きな影響を与えた。

C1 noun /ˌɪnkəmˌpætəˈbɪlɪti/

incompatibility

非互換性

Meaning

the state of being unable to exist or work together harmoniously; lack of compatibility

Example

The project failed because of incompatibility between the two software systems.

2つのソフトウェアシステムの非互換性のため、そのプロジェクトは失敗した。

C1 adjective /ˌɪndɪˈskriːt/

indiscreet

軽率

Meaning

Not careful in what one says or does, likely to reveal secrets or offend.

Example

It was indiscreet of him to mention the plan in public.

公衆の面前で計画について言及するのは軽率だった。

C1 noun /ɪmˈpɒs.tər/

Impostor

詐欺師; 偽者

Meaning

a person who pretends to be someone else in order to deceive others; a fraud

Example

The impostor convinced everyone he was a doctor until his fake credentials were discovered.

詐欺師は医者だとみんなを納得させましたが、彼の偽の資格が発覚するまでそれが続きました。

B1 verb /ˈɪndʒər/

injure

怪我をさせる

Meaning

to cause physical harm or damage to someone or something

Example

He injured his leg while playing football.

彼はサッカーをしている時に足を怪我した。

B2 noun ˌɪn.fləˈmeɪ.ʃən

inflammation

炎症

Meaning

A localized physical condition in which part of the body becomes reddened, swollen, hot, and often painful.

Example

Chronic inflammation can lead to severe diseases.

慢性炎症は重篤な疾患を引き起こす可能性があります。

C1 noun /ˌɪmpɔːrˈteɪʃən/

importation

輸入

Meaning

The act of bringing goods or services into a country from abroad

Example

The importation of luxury goods is strictly regulated.

高級品の輸入は厳しく規制されています。

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 noun /ɪnˈdʒʌŋkʃən/

injunction

差止命令

Meaning

A judicial order restraining a person from an action or compelling a certain act.

Example

The court issued an injunction to stop the company from polluting the river.

裁判所は、会社が河川を汚染するのを防ぐために差止命令を出した。

B1 verb ɪnˈvɛst

invest

投資する

Meaning

To put money, effort, time, etc. into something to make a profit or get an advantage.

Example

Investing in intellectual property can generate passive income.

知的財産への投資はパッシブインカムを生み出す可能性があります。

C2 noun /ɪnˈtɒksɪkənt/

intoxicant

酔わせる物質

Meaning

a substance, especially alcohol or a drug, that causes intoxication

Example

Alcohol is the most commonly used intoxicant in many cultures.

アルコールは多くの文化で最も一般的に使用される酔わせる物質です。

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。

C1 verb /ɪmˈpɛrɪl/

imperil

危険にさらす

Meaning

To put in danger or at risk.

Example

Reckless driving can imperil the lives of others.

無謀な運転は他人の命を危険にさらす可能性があります。

B2 noun /ˈɪdɪət/

idiot

バカ

Meaning

a person who acts in a way that is considered very stupid or foolish

Example

He acted like an idiot at the party last night.

彼は昨晩のパーティーでイディオットのように振る舞った。

C1 adjective /ˌɪnɔːrˈɡænɪk/

inorganic

無機の

Meaning

relating to substances that are not derived from living organisms; lacking organic structure or growth

Example

Inorganic compounds are commonly studied in chemistry labs.

無機化合物は化学の基本です。

C2 noun /ɪnˈhɪərəns/

inherence

内在性

Meaning

The state of being an essential or permanent part of something.

Example

The inherence of risk is part of every business venture.

リスクの内在性はすべてのビジネス冒険の一部です。

C2 adjective /ɪnˈkɒntɪnənt/

incontinent

失禁

Meaning

lacking control over urination or defecation; lacking self-restraint

Example

The patient was incontinent after surgery.

手術後、患者は失禁していた。

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。

C1 noun /ˌɪnflɛksɪˈbɪlɪti/

inflexibility

柔軟性の欠如

Meaning

the quality of being rigid or unwilling to change; lack of adaptability

Example

The inflexibility of the rules caused unnecessary delays.

規則の柔軟性の欠如が不要な遅れを引き起こした。

C1 noun /ˈɪŋ.krə.mənt/

Increment

増加

Meaning

an increase or addition, especially one of a series on a fixed scale; a regular increase in salary

Example

He received an annual increment of five percent in his salary this year.

彼は今年、自分の給料に5パーセントの年次増加を受け取った。

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。

A2 adjective /ˈɪn.dɔːr/

indoor

屋内の

Meaning

situated, occurring, or used inside a building

Example

Indoor plants can improve air quality at home.

屋内の植物は家の空気の質を改善できます。