indefatigable
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C2 adjective /ˌɪndɪˈfætɪɡəbl̩/

indefatigable

不知疲倦
Meaning
persisting tirelessly; incapable of being fatigued
Example
Her indefatigable spirit kept the team motivated during the long project.
她那不知疲倦的精神在漫长的项目中激励着团队。
C2 adjective /ˌɪnfəˈlɪsɪtəs/

infelicitous

不合适的
Meaning
not suitable or well chosen; awkward or unfortunate
Example
His infelicitous remark ruined the atmosphere of the meeting.
他不合适的评论破坏了会议的氛围。
C2 noun /ˈaɪ.ərn.wʊd/

Ironwood

铁木
Meaning
a hard, dense wood from various trees; also the tree itself that produces small flowers
Example
The ironwood tree blooms with tiny white flowers.
铁木树开着小白花。
C2 adjective/verb /ɪnˈkɑːrneɪt/

incarnate

化身
Meaning
to embody or represent in human form; in flesh
Example
She is kindness incarnate.
她是善良的化身。
C2 adjective /ɪnˈdɛkərəs/

indecorous

不得体
Meaning
Not in keeping with good taste and propriety; improper.
Example
His indecorous behavior shocked the audience.
他的不得体行为让观众震惊。
C2 verb /ˈɪndjʊˌreɪt/

indurate

使坚硬
Meaning
To harden or make something physically or emotionally tough.
Example
Years of hardship indurated his spirit.
多年的艰辛使他的精神变得坚韧。
C2 noun /ˈɪn.tɪ.ɡreɪ.tɪv dɪˈpləʊ.mə.si/

integrative diplomacy

综合外交
Meaning
A diplomatic approach that seeks to combine or coordinate different elements, interests, or parties into a unified whole.
Example
Integrative diplomacy strengthens alliances.
综合外交增强了联盟。
C2 adjective /ɪnˈkɒntɪnənt/

incontinent

失禁
Meaning
lacking control over urination or defecation; lacking self-restraint
Example
The patient was incontinent after surgery.
病人在手术后失禁。
C2 adjective /ˌɪɡ.nəˈmɪn.i.əs/

ignominious

可耻的
Meaning
Marked by shame, disgrace, or humiliation.
Example
The team suffered an ignominious defeat in the finals.
队伍在决赛中遭遇了可耻的失败。
C2 noun /ɪˈnɪkwɪti/

iniquity

不公
Meaning
Immoral or grossly unfair behavior.
Example
The dictator's regime was marked by corruption and iniquity.
独裁者的政权因腐败和不公而闻名。
C2 adjective /ˌaɪ.kə.nəˈklæs.tɪk/

iconoclastic

特指攻击或拒绝已建立的信仰、传统或价值观
Meaning
Characterized by attacking or rejecting cherished beliefs, traditions, or established values.
Example
Her iconoclastic views challenged the conventional wisdom of the industry.
她的偶像破坏主义观点挑战了行业的传统智慧。
C2 noun /ɪmˌpɜːrtərbəˈbɪləti/

imperturbability

安定性
Meaning
The quality of being calm and not easily disturbed or upset.
Example
Her imperturbability during the crisis impressed everyone.
她在危机中的安定性给所有人留下了深刻的印象。
C2 adjective /ɪnˈɛstɪməbl/

inestimable

无法估量的
Meaning
Too great or valuable to be measured or estimated.
Example
Her contribution to the project was of inestimable value.
她对项目的贡献具有无法估量的价值。
C2 adjective /ˈɪkθiɪk/

ichthyic

鱼类的
Meaning
Relating to or resembling fish.
Example
The artist's painting had an ichthyic quality.
艺术家的画作具有鱼类的特质。
C2 noun /ɪnˈkɒnstənsi/

inconstancy

不稳定性
Meaning
The quality of changing frequently or being unreliable.
Example
The inconstancy of the weather makes planning difficult.
天气的不稳定性使得规划变得困难。
C2 noun /aɪˈoʊtə/

iota

极小的数量
Meaning
An extremely small amount.
Example
He did not show an iota of fear.
他一点儿恐惧都没表现出来。
C2 noun /ˌɪrɪˈdɛsəns/

iridescence

虹彩光泽
Meaning
a play of lustrous, changing colors like those of a rainbow
Example
The butterfly's wings shimmered with iridescence.
蝴蝶的翅膀闪耀着虹彩光泽。
C2 noun /ˈɪŋkjʊbəs/

incubus

恶梦般的负担
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.
债务成了一个恶梦般的负担，沉重地压在这个家庭上。
C2 adjective /ˌɪnfɪnɪˈtɛsɪməl/

infinitesimal

微不足道
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.
这个错误如此微不足道，以至于没有影响结果。
C2 noun /ˌɪnvəˈluːʃən/

involution

内卷
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.
这个故事充满了内卷，使得跟随它变得很难。
C2 adjective /ɪmˈpɔːrtʃənət/

importunate

缠人的
Meaning
Persistent to the point of annoyance or intrusion
Example
The importunate salesman kept calling despite repeated refusals.
那个缠人的推销员在反复拒绝后仍然继续打电话。
C2 noun /ˌɪmpəˈtjuːəsəti/

impetuosity

冲动性
Meaning
The quality of being rash or impulsive.
Example
His impetuosity often got him into trouble.
他的冲动性常常让他陷入麻烦。
C2 noun /ˈænʒənuː/

ingenue

天真无邪的年轻女性
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.
她在剧中扮演了那个天真无邪的年轻女性，展现了极大的魅力。
C2 verb /ɪnˈɡrɑːft/

ingraft

根植
Meaning
To implant or fix deeply, often used in the sense of grafting an idea or quality.
Example
The teacher tried to ingraft good manners in the students.
老师尝试将良好的行为习惯根植于学生们。
C2 adjective /ɪmˈprɒvɪdənt/

improvident

缺乏远见
Meaning
Not having or showing foresight; spending wastefully or without thought for the future.
Example
His improvident habits left him with no savings.
他缺乏远见的习惯让他没有积蓄。
C2 adjective /ˌɪrɪˈtriːvəbl/

irretrievable

不可恢复
Meaning
impossible to recover or regain
Example
The documents were lost in an irretrievable way after the fire.
文件在火灾后以不可恢复的方式丢失。
C2 adjective /ˈɪn.dɪ.dʒənt/

indigent

贫困
Meaning
lacking the necessities of life due to poverty; very poor
Example
The hospital offers free care to indigent patients.
医院为贫困患者提供免费护理。
C2 verb /ɪnˈsɪnəˌreɪt/

incinerate

焚烧
Meaning
to burn something completely until it is reduced to ashes
Example
The city decided to incinerate the medical waste for safety.
城市决定为安全起见销毁医疗废物。
C2 noun /ˈaɪ.lət/

islet

小岛
Meaning
A very small island.
Example
The fishermen rested on a tiny islet before continuing their journey.
渔民们在继续他们的旅程之前，在一个小岛上休息。
C2 noun /ɪˌledʒ.əˈbɪl.ə.ti/

Illegibility

难以辨认
Meaning
the quality of being impossible or difficult to read; unclear writing or print
Example
The doctor's handwriting was famous for its illegibility among the pharmacy staff.
医生的字迹因其难以辨认而在药房工作人员中广为人知。
C2 noun /ˌɪnkəˈpæsəti/

incapacity

无能
Meaning
the lack of ability, power, or fitness to do something
Example
His mental incapacity prevented him from making important decisions.
他的心理无能使他无法做出重要决策。
C2 noun /ɪmˈpjuːnɪti/

impunity

Meaning
freedom from punishment or harmful consequences for an action
Example
The dictator ruled with impunity, ignoring international laws.
C2 noun /ɪnˈsɪpiəns/

incipience

开始
Meaning
the beginning or initial stage of something
Example
The project was still in its incipience when funding was approved.
当资金获得批准时，项目仍处于其开始阶段。
C2 noun /ˌaɪ.diˈeɪ.ʃən/

ideation

构思过程
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.
The team conducted brainstorming sessions to generate new product ideas.
C2 adjective /ɪnˈkoʊətɪv/

inchoative

初步的
Meaning
relating to the beginning of something; in an initial stage
Example
The poet used inchoative expressions to depict the dawn of creation.
诗人使用了初步的表达方式来描绘创世之初。
C2 adjective /ɪmˈpræktɪkəbl/

impracticable

不切实际
Meaning
Not capable of being carried out or put into practice.
Example
The plan seemed impracticable due to limited resources.
由于资源有限，计划显得不切实际。
C2 adjective /ɪˈmɒdərət/

immoderate

过度的
Meaning
excessive; beyond reasonable limits
Example
He has an immoderate love for sweets.
他对糖果有过度的喜爱。
C2 verb /ɪnˈtɜːrpəˌleɪt/

interpolate

插入
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.
编辑在手稿中插入了一个缺失的段落。
C2 adjective /ˌɪnkənˈsɪdərəbl/

inconsiderable

微不足道
Meaning
Too small or unimportant to be worth considering.
Example
The donation was not inconsiderable, though smaller than expected.
这笔捐款并不微不足道，尽管比预期的小。
C2 adjective /ɪnˈsɪpɪd/

insipid

乏味的
Meaning
lacking flavor, interest, or excitement; dull
Example
The soup was insipid and needed more seasoning.
汤无味，需要更多的调料。
C2 adverb /ɪnˈdjuːbɪtəbli/

indubitably

无疑
Meaning
Without a doubt; certainly.
Example
She is indubitably the best candidate for the job.
她无疑是这份工作的最佳候选人。
C2 adjective /ɪnˈtɛsteɪt/

intestate

死于无遗嘱
Meaning
Having died without leaving a valid will.
Example
She died intestate, so her assets were distributed by law.
她死于无遗嘱，因此她的财产由法律分配。
C2 noun /ˈɪntəˌkrɒpɪŋ/

intercropping

间作农业
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.
间作农业有助于改善土壤肥力和害虫控制。
C2 adjective /ɪnˈfɜːrnəl/

infernal

地狱的
Meaning
relating to hell; extremely troublesome or annoying
Example
The workers complained about the infernal noise from the construction site.
工人们抱怨施工现场的地狱般噪音。
C2 noun /ˌɪnvəˈkeɪʃən/

invocation

祈求
Meaning
the act of calling upon a higher power for help, blessing, or inspiration
Example
The ceremony began with an invocation to the gods.
仪式以对神的祈求开始。
C2 adjective /ɪnˈkɒrɪdʒəbəl/

incorrigible

无法纠正的
Meaning
incapable of being corrected, improved, or reformed
Example
He is an incorrigible optimist who never loses hope.
他是一个无法纠正的乐观主义者，从不放弃希望。
C2 noun /ˈɪɡ.nəˌmɪn.i/

ignominy

耻辱
Meaning
Public shame, disgrace, or dishonor.
Example
He lived the rest of his life in ignominy after the scandal.
他在丑闻后余生都活在耻辱中。
C2 noun /ˈɪntərˌveɪl/

intervale

沿河低洼的土地，通常肥沃而平坦
Meaning
A low-lying tract of land along a river, usually fertile and flat.
Example
The farmers cultivated crops on the lush intervale by the river.
农民在河边的肥沃土地上种植庄稼。
C2 verb /ɪnˈdɛmnɪfaɪ/

indemnify

Meaning
to compensate someone for harm or loss; to secure against future damage or cost
Example
The insurance company agreed to indemnify the client for the damages.
C2 adjective /ɪnˈsɛnʃənt/

insentient

无感知的
Meaning
Lacking perception, consciousness, or sensation.
Example
The rock is an insentient object with no awareness.
岩石是一个无感知的物体，没有意识。
C2 adjective /ˌɪrɪˈlɪdʒəs/

irreligious

不信教的
Meaning
Indifferent or hostile to religion
Example
Some people in the community consider him irreligious because he never attends religious services.
社区中的一些人认为他不信教，因为他从不参加宗教服务。
C2 adjective /ɪnˈdʒɛnjuəs/

ingenuous

天真
Meaning
Innocent, naive, and unsuspecting; showing childlike simplicity and sincerity.
Example
Her ingenuous smile revealed her genuine kindness.
她天真的笑容揭示了她真实的善良。
C2 noun /ˌɪnˌkeɪpəˈbɪləti/

incapability

无能力
Meaning
lack of ability or power to do something; inability or incompetence
Example
His incapability to manage the team led to serious problems.
他管理团队的无能力导致了严重的问题。
C2 noun /ɪnˈfrækʃən/

infraction

违规
Meaning
A violation or breach of a rule, law, or agreement.
Example
The student was punished for a minor infraction of the school rules.
学生因轻微违反学校规则而受到惩罚。
C2 adjective /aɪˈtɪnərənt/

itinerant

流动的
Meaning
Traveling from place to place, especially for work or duty.
Example
The itinerant teacher moved from village to village to educate children.
这位流动的教师从一个村庄到另一个村庄，教育孩子们。
C2 verb /aɪˈtɪnəˌreɪt/

itinerate

旅行
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.
传教士到处旅行传播信息。
C2 noun /ˈaɪ.səˌbɑːr/

isobar

等压线
Meaning
A line on a weather map connecting points of equal atmospheric pressure.
Example
The meteorologist explained how isobars indicate wind speed and direction.
气象学家解释了等压线如何指示风速和风向。
C2 noun /ɪˈrɛvərəns/

irreverence

不敬
Meaning
a lack of respect for people or things that are generally taken seriously
Example
His jokes about religion showed irreverence to the sacred traditions.
他关于宗教的笑话表现了对神圣传统的不敬。
C2 noun /ˈaɪdɪl/

idyll

田园诗般的场景
Meaning
An extremely happy, peaceful, or picturesque episode or scene, often idealized.
Example
Their honeymoon was an idyll on a tropical island.
他们的蜜月是在一个热带岛屿上的田园诗般的场景。
C2 noun /ˌɪnkənˈɡruːəti/

incongruity

不一致
Meaning
The state of being inconsistent or out of place.
Example
The incongruity of his cheerful mood during the funeral shocked everyone.
在葬礼上，他愉快的心情与情境的不一致让所有人都震惊了。
C2 adjective /ˌɪrɪˈprəʊtʃəbl̩/

irreproachable

无可指责
Meaning
Beyond criticism; faultless.
Example
The judge was known for his irreproachable integrity.
法官因其无可指责的正直而闻名。
C2 noun /ɪnˈtræn.sɪ.dʒəns/

intransigence

固执
Meaning
Refusal to change one's views or to agree about something.
Example
The negotiations failed due to the intransigence of both parties.
由于双方的固执，谈判失败了。
C2 noun /ɪnˈɡrætɪˌtjuːd/

ingratitude

忘恩负义
Meaning
Lack of gratitude; failure to show thanks or appreciation.
Example
His ingratitude hurt her feelings after all she had done for him.
他的忘恩负义伤害了她的感情，尽管她为他做了这么多。
C2 noun /ˌɪn.təˈvɛn.ʃə.nɪ.zəm/

interventionism

干预主义
Meaning
Government policy of active involvement in economic affairs.
Example
The central bank's interventionism helped stabilize inflation.
中央银行的干预主义帮助稳定了通货膨胀。
C2 noun /aɪər/

ire

愤怒, 激怒
Meaning
intense anger or rage
Example
The new policy provoked the ire of the employees.
新政策激怒了员工。
C2 adjective /ɪmˈpɪəriəs/

imperious

专横
Meaning
Arrogantly domineering or overbearing.
Example
Her imperious tone made it hard for others to argue.
她那种专横的语气让其他人很难反驳。
C2 adjective /ˌɪnæprɪˈhɛnsəbl/

inapprehensible

难以理解
Meaning
not understandable; incomprehensible
Example
The concept was so abstract that it seemed inapprehensible to most students.
这个概念如此抽象，以至于它对大多数学生来说是不可理解的。
C2 adjective /ɪnˈæpt/

Inapt

不合适; 不适当
Meaning
not suitable; inappropriate; unfit
Example
His comment was inapt for the formal meeting.
他的评论对正式会议不合适。
C2 adjective /ɪnhɑːrˈmoʊniəs/

Inharmonious

不和谐
Meaning
lacking harmony; discordant in sound; not in tune
Example
The inharmonious sounds from the broken piano made everyone cover their ears.
破碎钢琴发出的不和谐声音让每个人都捂住了耳朵。
C2 verb ɪmˈbaɪb

imbibe

吸收, 同化, 喝
Meaning
Absorb or assimilate ideas or knowledge. To drink or take in.
Example
He tried to imbibe the wisdom from his mentor.
他试图从他的导师那里吸收智慧。
C2 noun /ɪnˈdɛntʃər/

indenture

Meaning
A formal legal agreement, contract, or document, often relating to work or service.
Example
In the 18th century, many workers came under indenture to work overseas.
C2 adjective /ɪnˈsɪpiənt/

incipient

初期的
Meaning
in an initial stage; beginning to develop
Example
The incipient storm made the sky turn dark and heavy.
初期的风暴使天空变得阴暗而沉重。
C2 adjective ˌɪm.pəˈtɜː.bə.bəl

imperturbable

沉着冷静
Meaning
Unable to be upset or excited; not easily disturbed.
Example
His imperturbable nature made him a great leader.
他沉着冷静的性格使他成为了一个伟大的领导者。
C2 noun (compound/erroneous entry) /ɪnˈɛksərəbl ɑːrmi/

inexorableinexorablearmy

无法阻挡的军队
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.
叛军害怕即将接近他们堡垒的无法阻挡的军队。
C2 adjective /ɪmˈpɒndərəbl̩/

imponderable

无法估量
Meaning
Something difficult or impossible to estimate, assess, or understand
Example
The outcome of the election depends on many imponderable factors.
选举结果取决于许多无法估量的因素。
C2 adjective /ɪˈrædɪkəbəl/

irradicable

不可根除的
Meaning
not able to be eradicated; impossible to destroy or remove completely
Example
The love of a mother for her child is irradicable.
母亲对孩子的爱是不可根除的。
C2 adjective/noun /ɪnˈkɑːrnədiːn/

incarnadine

深红色
Meaning
a bright crimson or pinkish-red color
Example
The sky turned incarnadine at sunset.
夕阳下天空变成了深红色。
C2 noun /ˌɪnkrʌˈsteɪʃən/

incrustation

外壳
Meaning
a crust or hard coating formed on the surface of something
Example
The old pipes were blocked due to heavy incrustation of minerals.
由于矿物质的重积附，旧管道被堵塞了。
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.
C2 adjective /ˈɪnfəntaɪl/

infantile

婴儿式
Meaning
characteristic of an infant; childish
Example
His infantile behavior embarrassed everyone at the meeting.
他那种婴儿式的行为让会议上的每个人都感到尴尬。
C2 adjective /ɪnˈɛk.wɪ.tə.bəl/

inequitable

不公平
Meaning
Not fair or just; lacking in fairness or equality.
Example
The distribution of resources was inequitable among the workers.
资源的分配在工人之间是不公平的。
C2 adjective /ɪnˈɛksərəbl/

inexorable

不可阻挡
Meaning
Impossible to stop or prevent; relentless.
Example
The inexorable rise of technology is changing every aspect of life.
技术的不可阻挡的崛起正在改变生活的方方面面。
C2 verb /ɪnˈdɒktrɪˌneɪt/

indoctrinate

灌输
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.
该政权试图通过宣传对年轻人进行洗脑。
C2 adjective /ˌɪnkəmˈprɛsəbl/

incompressible

不可压缩
Meaning
Not able to be pressed or squeezed into a smaller space.
Example
Liquids are generally considered incompressible.
液体通常被认为是不可压缩的。
C2 adjective /ɪnˈsɛndiˌɛri/

incendiary

煽动性的 / 挑衅的
Meaning
designed to cause fires or stir up conflict
Example
The politician’s incendiary remarks angered the crowd.
政治家的挑衅性言论激怒了人群。
C2 noun /ɪnˈtɛnʃən/

intension

内涵
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.
'狗'这个词的内涵包括是哺乳动物和被驯养。
C2 adjective ɪnˈfiː.zə.bəl

infeasible

不可行
Meaning
Not possible to do easily or conveniently; impracticable.
Example
Restoring the forest may become infeasible if destruction continues.
如果破坏继续下去，恢复森林可能变得不可行。
C2 noun /ˌɪnəməˈrɑːtə/

inamorata

Meaning
A woman with whom someone is in love; a female lover.
Example
He wrote a poem dedicated to his inamorata.
C2 adjective /ˌɪnɪkˈstrɪkəbl/

inextricable

无法分开
Meaning
Impossible to separate or escape from.
Example
The two friends shared an inextricable bond.
这两个朋友共享了一个无法分开的联系。
C2 verb /ˈɪŋkʌlpeɪt/

inculpate

指责
Meaning
To blame or accuse someone of wrongdoing.
Example
The evidence seemed to inculpate the suspect in the crime.
证据似乎将嫌疑犯牵连到这起犯罪中。
C2 adjective /ˌɪnɪˈsɛnʃəl/

inessential

非必要的
Meaning
not necessary or important; not essential
Example
The report removes all inessential details to stay focused.
报告删除了所有非必要的细节以保持重点。
C2 adjective /ˌɪntərˈlɒkjətəri/

interlocutory

临时的
Meaning
Given during the course of a legal action, not final but temporary or provisional.
Example
The judge issued an interlocutory order to maintain the status quo until the hearing.
法官发布了临时命令，以保持听证会之前的现状。
C2 adjective ˌɪn.ɪ.fɪˈkeɪ.ʃəs

inefficacious

无效
Meaning
Not producing any or the desired effect; ineffective.
Example
The treatment was inefficacious in curing the disease.
该治疗对治愈疾病无效。
C2 adjective /ɪɡˈnoʊ.bəl/

Ignoble

卑鄙; 可耻; 不光彩
Meaning
dishonorable; not noble in character; base or mean
Example
His ignoble actions betrayed his friends' trust.
他卑鄙的行为背叛了朋友的信任。
C2 adjective /ˌɪnˈekspɜːrt/

inexpert

不熟练的
Meaning
not skilled or experienced; lacking expertise
Example
The inexpert handling of the machine caused several mistakes.
对机器的不熟练操作导致了多次错误。
C2 verb /ɪnˈtɜːr/

inter

埋葬
Meaning
To bury a dead body in the ground.
Example
They decided to inter the soldier with full honors.
他们决定以完全的荣誉埋葬那位士兵。
C2 noun /ˌɪntərˈrɛɡnəm/

interregnum

过渡期
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.
在国王去世后的过渡期，该国经历了不稳定。
C2 verb /ˈɪmprɛɡneɪt/

impregnate

使怀孕 / 浸透
Meaning
To make pregnant; to fill or saturate with something.
Example
The scientist used a method to impregnate the material with resin.
科学家使用一种方法将材料用树脂进行浸透。
C2 adjective /ˌɪntərˈniːsaɪn/

internecine

内部冲突
Meaning
Relating to conflict within a group, often causing mutual destruction.
Example
The internecine conflict weakened the organization from within.
内部冲突削弱了组织内部的力量
C2 noun /aɪˈkɒnəklæst/

iconoclast

破坏偶像者
Meaning
A person who attacks or criticizes cherished beliefs, traditions, or institutions.
Example
He was known as an iconoclast who challenged old traditions.
他被认为是一个破坏偶像者，挑战旧传统。
C2 verb /ɪnˈveɪ/

inveigh

严厉批评
Meaning
To speak or write about something with great hostility and criticism.
Example
He inveighed against the corruption in government.
他严厉批评了政府中的腐败。
C2 adjective /ˌɪrɪˈfrændʒɪbəl/

irrefrangible

不可侵犯的
Meaning
Not to be broken, violated, or infringed
Example
The constitution guarantees certain irrefrangible rights to every citizen.
宪法保证每个公民享有某些不可侵犯的权利。
C2 noun /ɪkˈsɔːr.ə/

Ixora

伊克索拉
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.
亮红色的伊克索拉灌木排成行，沿着通往热带花园的小径。
C2 adjective /ˈɪnmoʊst/

inmost

最深的
Meaning
Situated at the very heart or deepest part; most private or secret.
Example
She revealed her inmost thoughts to her closest friend.
她向她最亲密的朋友透露了她最深的想法。
C2 adjective /ɪnˈsɛptɪv/

inceptive

初始
Meaning
Relating to or marking the beginning or initial stage of something.
Example
The inceptive phase of the project was marked by enthusiastic planning.
项目的初始阶段是通过充满热情的规划来标志的。
C2 adjective /ˌɪnɪkˈsprɛsəbl/

inexpressible

难以言喻
Meaning
Too strong or extreme to be expressed in words.
Example
She felt inexpressible joy at the news of her success.
她得知自己成功的消息时感到难以言喻的喜悦。
C2 adjective /ˌɪntəˈrɒɡətəri/

interrogatory

询问的
Meaning
expressed in the form of a question; relating to questioning
Example
The lawyer’s interrogatory tone made the witness uncomfortable.
律师的询问语气让证人感到不舒服。
C2 noun /ˌɪn.ɪˈbraɪ.ə.ti/

inebriety

醉酒
Meaning
the state of being drunk or intoxicated
Example
His frequent inebriety led to the loss of his job.
他的频繁醉酒导致了他失去工作。
C2 noun /ɪmˌprɒb.əˈbɪl.ə.ti/

Improbability

不可能性
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.
两次赢得彩票的可能性几乎为零，但她仍然买了票。
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.
他们为了健康搬出了不健康的社区
C2 noun /ˌɪmprɪˈmɑːtər/

imprimatur

批准书
Meaning
An official license or approval, especially to publish a book.
Example
The book was released with the official imprimatur of the church.
这本书以教会的正式批准书发布。
C2 noun /ɪˈrʌp.ʃən/

Irruption

突然的暴力入侵; 入侵或突袭; 突如其来的爆发或喷发
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.
军队的突然闯入敌方领土使对方力量完全措手不及。
C2 adjective /ˌɪnɪkˈspiːdiənt/

inexpedient

不合适
Meaning
Not advisable, suitable, or practical in the circumstances.
Example
It would be inexpedient to invest without proper research.
在没有适当研究的情况下进行投资是不合适的。
C2 noun /ˈɪd.i.ə.si/

Idiocy

愚蠢
Meaning
extremely stupid behavior or actions; foolishness
Example
The decision to ignore safety protocols was pure idiocy that endangered everyone.
忽视安全协议的决定是纯粹的愚蠢，危及了每个人。
C2 adjective /ˈɪmənənt/

immanent

内在的
Meaning
existing or operating within; inherent
Example
He believed that moral values are immanent in human nature.
他相信道德价值在人的本性中是内在的。
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.
埋葬仪式在家庭墓地举行。
C2 noun /ˌɪnkænˈdɛsəns/

incandescence

白炽光
Meaning
the emission of light from a hot object; brilliance
Example
The incandescence of the candle filled the dark room.
蜡烛的白炽光填满了黑暗的房间。
C2 noun /ˈɪmɪˌteɪtər/

imitator

模仿者
Meaning
a person who copies the behavior, style, or actions of others
Example
He became famous as an imitator of popular singers.
他因模仿流行歌手而出名。
C2 noun /ˌɪmprɪˈkeɪʃən/

imprecation

诅咒
Meaning
A spoken curse or expression of strong condemnation.
Example
The angry crowd hurled imprecations at the corrupt official.
愤怒的人群向腐败的官员投掷了诅咒。
C2 adjective /ɪnˈseɪʃiət/

insatiate

无法满足
Meaning
impossible to satisfy; always wanting more
Example
He had an insatiate desire for power.
他有一个无法满足的权力愿望。
C2 verb /ɪmˈpjuːt/

impute

归因于
Meaning
to attribute a fault or responsibility to someone
Example
They imputed the company's success to good leadership.
他们将公司的成功归功于出色的领导力。