ingratiate
All a b c d e f g h i j k l m n o p q r s t u v w x y z
All CEFR A1 A2 B1 B2 C1 C2
Content locale
EN 英语 BN 孟加拉语 HI 印地语 ES 西班牙语 FR 法语 DE 德语 RU 俄语 ZH 中文 JA 日语
All Vocabulary Cards All Vocabularies
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 /ˌɪnkænˈdɛsənt/

incandescent

白炽的
Meaning
emitting light as a result of being heated; extremely bright or passionate
Example
The incandescent lamp lit up the entire hall.
白炽灯照亮了整个大厅。
C2 verb /ɪˈluːmɪn/

illumine

照亮
Meaning
to light up or make clear
Example
The rising sun illumined the mountain peaks.
初升的太阳照亮了山峰。
C2 adjective /ˌɪm.pəˈfɛk.tə.bəl/

imperfectible

不可完美
Meaning
Incapable of being made perfect or complete.
Example
Some human qualities are considered imperfectible.
某些人类特质被认为是不可完美的。
C2 verb /ɪmˈpeɪl/

impale

刺穿
Meaning
to pierce or fix something with a sharp object
Example
The knight was impaled by the enemy’s spear.
骑士被敌人的长矛刺穿。
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 /ˌɪntərˈmɪt/

intermit

中断
Meaning
To suspend or stop for a time; to pause intermittently.
Example
The rain would intermit and then start again.
雨会暂停然后再开始。
C2 verb /ɜːrk/

irk

激怒
Meaning
to annoy or irritate someone
Example
It irks me when people are late without calling.
当人们没有打电话就迟到时，我感到很生气。
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 /ˌɪmbəˈsɪləti/

imbecility

愚蠢
Meaning
Extreme foolishness, stupidity, or weakness of mind.
Example
The plan was abandoned due to its sheer imbecility.
由于其极端的愚蠢，计划被放弃。
C2 noun /ˈaɪsinəs/

iciness

冰冷
Meaning
The state of being cold in manner or temperature.
Example
There was a distinct iciness in his voice.
他的声音中有一种明显的冰冷感。
C2 adjective /ɪnˈvaɪələt/

inviolate

神圣不可侵犯
Meaning
free from violation, injury, or desecration; kept safe and untouched
Example
The ancient temple remained inviolate for centuries.
古老的寺庙几百年来一直保持着神圣不可侵犯。
C2 verb /ɪmˈbruː/

imbrue

玷污
Meaning
To stain, especially with blood.
Example
His hands were imbrued with blood after the battle.
他的手在战斗后被血染。
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 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 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 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 /ˌɪnkɒntrəˈvɜːtəbl/

incontrovertible

不可否认
Meaning
impossible to deny or dispute; unquestionable
Example
The evidence was incontrovertible and proved his innocence.
证据是不可否认的，并证明了他的清白。
C2 noun /ˈɪrɪɡənt/

irrigant

灌溉液体
Meaning
A liquid used for irrigation, especially in medical or agricultural contexts.
Example
The doctor used a sterile irrigant during the procedure.
医生在手术中使用了无菌灌溉液。
C2 verb /aɪˈdɒləˌtraɪz/

idolatrize

偶像崇拜
Meaning
To worship idols; to regard with excessive devotion or admiration.
Example
They began to idolatrize the statue as a deity.
他们开始把这尊雕像当作神明崇拜。
C2 noun /ˌɪnjuːˈɛndəʊ/

innuendo

暗示
Meaning
An allusive or oblique remark or hint, typically a suggestive or disparaging one.
Example
The manager's innuendo was directed towards his competitor.
经理的暗示是针对他的竞争对手的。
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 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 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 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 verb ˈɪn.kʌl.keɪt

inculcate

灌输
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.
父母应该灌输良好的价值观给孩子们。
C2 adjective /ˌɪrɪˈmiːdiəbl̩/

irremediable

无法修复的
Meaning
Impossible to cure, repair, or remedy.
Example
The damage to the ancient manuscript was irremediable.
古老手稿的损坏是无法修复的。
C2 verb /ˌɪn.trəˈmɪt/

intromit

引入
Meaning
To insert or introduce something into a place or body.
Example
The doctor carefully intromitted the instrument into the wound.
医生小心地将仪器引入伤口。
C2 adjective /ɪnˈvɛtərət/

inveterate

根深蒂固
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.
他是一个根深蒂固的读者，每天在图书馆度过几个小时。
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 verb /ˈɪməleɪt/

immolate

自焚
Meaning
To kill or sacrifice, especially by burning.
Example
The protesters threatened to immolate themselves in front of the building.
抗议者威胁要在建筑物前自焚。
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 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 /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 ɪnˈdɒm.ɪ.tə.bəl

indomitable

不可征服
Meaning
Impossible to subdue or defeat.
Example
Her indomitable spirit helped her overcome adversity.
她那不可征服的精神帮助她克服了逆境。
C2 adjective /ˌɪmpəˈmɪsəbl/

impermissible

不允许的
Meaning
Not permitted or allowed.
Example
Such behavior is impermissible in the workplace.
这种行为在工作场所是不允许的。
C2 noun /ˌɪndɛnˈteɪʃən/

indentation

缩进
Meaning
A space left at the beginning of a line of text; a notch or deep recess on a surface.
Example
The teacher asked the students to use proper indentation in their essays.
老师要求学生在他们的论文中使用正确的缩进。
C2 adjective /ɪnˈsuːsiənt/

insouciant

无忧无虑
Meaning
Showing a casual lack of concern; carefree.
Example
He gave an insouciant shrug and walked away.
他无忧无虑地耸了耸肩，然后走开了。
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 /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 /ˌɪntərˈsɛsər/

intercessor

调解人
Meaning
a person who intervenes or pleads on behalf of another
Example
He acted as an intercessor to resolve the conflict between the two families.
他作为调解人解决了两个家庭之间的冲突。
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 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 verb /ɪˈnjʊər/

inure

习惯
Meaning
To become accustomed to something, especially something unpleasant.
Example
Soldiers quickly became inured to the harsh conditions.
士兵们迅速适应了严酷的条件。
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 verb /ˈɪntərˌdɪkt/

interdict

禁止
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.
法院决定禁止销售非法商品。
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 adjective /ˌɪrɪˈkɒnsɪləbl/

irreconcilable

不可调和的
Meaning
impossible to make compatible or bring into harmony; unable to resolve differences
Example
The couple separated due to irreconcilable differences.
这对夫妇因不可调和的分歧而分开。
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 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 /ˌɪntərˈlɒkjətər/

interlocutor

对话者
Meaning
a person who takes part in a conversation or dialogue
Example
She was a skilled interlocutor during the debate.
她在辩论中是一个熟练的对话者。
C2 adjective /aɪˈsɒ.krə.nəs/

isochronous

等时间间隔发生
Meaning
Occurring at equal time intervals; in unison or synchrony.
Example
The pendulum swings are isochronous, repeating at equal intervals.
摆锤的摆动是等时性的，在相等的时间间隔重复。
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 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 /ˌɪrɪˈdɛsənt/

iridescent

彩虹色
Meaning
showing luminous colors that seem to change when seen from different angles
Example
She wore an iridescent dress that sparkled in the light.
她穿了一件在光线下闪闪发光的彩虹色裙子。
C2 adjective /ɪnˈkɒnstənt/

inconstant

不稳定的
Meaning
frequently changing; not consistent or dependable
Example
His inconstant moods made it difficult to work with him.
他的情绪不稳定使得与他合作变得困难。
C2 verb /ˌɪnkəˈpæsɪteɪt/

incapacitate

使无法运作
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.
重伤使球员在赛季剩余的时间内无法参赛。
C2 noun /ˈɪnsələns/

insolence

厚颜无耻
Meaning
rude or disrespectful behavior
Example
The teacher was shocked by the student's insolence.
老师对学生的厚颜无耻感到震惊。
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 adjective /ˌɪnkəmˈbʌstəbl/

incombustible

不燃烧
Meaning
Not capable of catching fire or burning.
Example
This material is incombustible and safe for construction.
这种材料是防火的，适合建筑使用。
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 /ˈɪntərˌloʊpər/

interloper

闯入者
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.
他在私人家庭聚会中感到像一个闯入者。
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 /ɪnˈsɪɡniə/

insignia

徽章
Meaning
A badge or symbol that shows rank, position, or membership.
Example
The soldier proudly wore the insignia of his regiment.
士兵自豪地佩戴着他团的徽章。
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 /ˌɪlˈneɪ.tʃəd/

ill-natured

性格恶劣
Meaning
Having a bad or unpleasant character; unkind or malicious.
Example
He made an ill-natured remark about his colleague.
他对他的同事做出了恶意的评论。
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 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 /ɪnˈsaɪzər/

incisor

切牙
Meaning
a narrow-edged tooth at the front of the mouth, adapted for cutting
Example
The dentist noted that his upper left incisor was chipped.
牙医注意到他的上左切牙裂开了。
C2 adjective /ɪˈrɛzəluːt/

irresolute

优柔寡断
Meaning
uncertain or indecisive; lacking determination
Example
He stood irresolute at the crossroads, unsure which path to take.
他在十字路口犹豫不决，不知道走哪条路。
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 /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 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.
巴拿马运河穿过巴拿马地峡。
C2 noun /ɪmˈpruː.dəns/

Imprudence

轻率; 粗心; 不小心
Meaning
the quality of being imprudent; lack of care for consequences; recklessness
Example
His financial imprudence led to bankruptcy within just two years.
他的财务不谨慎导致了两年内破产。
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 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 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 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 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 noun /ɪmˈpaɪ.ə.ti/

Impiety

亵渎
Meaning
lack of piety or reverence, especially for a god; disrespect or irreverence toward religious matters
Example
His impiety shocked the religious community when he mocked their sacred ceremonies.
他的不敬让宗教团体震惊，当他嘲笑他们的神圣仪式时。
C2 noun /ɪnˈsuːsiəns/

insouciance

无忧无虑
Meaning
Casual lack of concern; indifference.
Example
She carried herself with an air of insouciance, unbothered by the challenges ahead.
她带着一副无忧无虑的样子走着，毫不担心前方的挑战。
C2 adjective /ˌɪnɪkˈstɛnsəbl/

inextensible

不可伸展的
Meaning
Not capable of being stretched or extended.
Example
This rope is made of an inextensible material.
这根绳子是由不可伸展的材料制成的。
C2 noun /ˈɪndɪkənt/

indicant

指示物
Meaning
Something that indicates or points to a fact or condition.
Example
High fever is often an indicant of infection.
高烧通常是感染的指示物。
C2 adjective /ɪmˈplækəbl/

implacable

不可调和
Meaning
unable to be appeased, calmed, or pacified
Example
The soldiers faced an implacable enemy who refused to surrender.
士兵们面对着一个不可调和的敌人，他拒绝投降。
C2 adjective /ˌɪrɪˈdjuːsəbl/

irreducible

不可约的
Meaning
impossible to reduce or simplify further
Example
The fraction 3/7 is irreducible.
分数 3/7 是不可约的。
C2 verb ˈɪnʌndeɪt

inundate

淹没, 用事情或人淹没某人或某物
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.
广告后，公司被大量请求淹没。
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 /ˈɪnfəmi/

infamy

幸福
Meaning
the state of being well known for some bad quality or deed
Example
His name will live in infamy for the crimes he committed.
她在收到奖项时无法掩饰她的幸福。
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 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 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 /ɪmˈpæsɪbəl/

impassible

不可忍受的
Meaning
Incapable of suffering or feeling pain (used mainly in theological or philosophical contexts).
Example
Some philosophers argue that God is impassible and cannot experience human emotions.
一些哲学家认为上帝是不可忍受的，无法体验人类的情感。
C2 noun /ˌɪdiəˈsɪŋkrəsi/

idiosyncrasy

特徵
Meaning
A distinctive or peculiar characteristic, habit, or mannerism unique to an individual.
Example
One of her idiosyncrasies was humming while working.
她的一个偶发性特征是工作时哼歌。
C2 adjective /ˌaɪdəˈlɑːtrɪəs/

idolatrious

偶像崇拜的
Meaning
Excessively devoted or reverent towards idols or false gods.
Example
The ancient tribe was known for its idolatrious practices.
这个古老的部落因其偶像崇拜的习惯而闻名。
C2 adjective /ɪmˈperɪʃəbəl/

Imperishable

永恒的; 不朽的; 不会腐烂的
Meaning
not subject to decay; lasting forever; eternal
Example
The imperishable beauty of classical art continues to inspire generations.
经典艺术的永恒美丽继续激励着一代又一代。
C2 adjective /ɪnˈɡreɪʃiˌeɪtɪŋ/

ingratiating

奉承的
Meaning
Charming or flattering in a way intended to gain favor.
Example
His ingratiating smile made everyone trust him quickly.
他的奉承笑容让每个人都迅速信任了他。
C2 adjective /ɪˈnɪmɪkəl/

inimical

敌对的 / 不利的
Meaning
tending to obstruct or harm; unfriendly or hostile
Example
The policy was inimical to the country's economic growth.
该政策对该国的经济增长不利。
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 adjective /ɪˈlɪbərəl/

illiberal

非自由主义的
Meaning
Opposed to liberal principles; restricting freedom of thought or behavior.
Example
The government was criticized for its illiberal policies.
政府因其非自由主义的政策而受到批评。
C2 noun /ˈɪkθiəˌsɔːrz/

ichthyosaurs

鱼龙（已灭绝的海洋爬行动物）
Meaning
Extinct marine reptiles that resembled fish and dolphins, dominant during the Mesozoic era.
Example
Ichthyosaurs were swift predators of the ancient seas.
鱼龙是古代海洋的迅猛掠食者。
C2 verb /ˌɪmpɔːrˈtuːnd/

importuned

不停地请求
Meaning
asked someone persistently and pressingly for something
Example
She importuned her boss for a raise until he finally gave in.
她不停地请求老板加薪，直到他最终答应。
C2 noun /ɪnˈkwɪzɪtər/

inquisitor

审问者
Meaning
A person who asks many questions, often in an official or harsh manner.
Example
The inquisitor demanded detailed answers from the witness.
审问者要求证人提供详细的答案。
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 /ɪnˈtɛmpərət/

intemperate

失控的
Meaning
Lacking self-control; immoderate, especially in indulgence.
Example
The politician's intemperate remarks caused controversy.
政治家的失控言论引发了争议。
C2 adjective /ɪˈnɪkwɪtəs/

iniquitous

不公正
Meaning
grossly unfair and morally wrong
Example
Slavery was one of the most iniquitous practices in history.
奴隶制是历史上最不公正的实践之一。
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 noun /ɪnˈtɒksɪkənt/

intoxicant

醉品
Meaning
a substance, especially alcohol or a drug, that causes intoxication
Example
Alcohol is the most commonly used intoxicant in many cultures.
酒精是许多文化中最常用的醉品。
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 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 /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 adjective /ˈɪndələnt/

indolent

懒惰
Meaning
Wanting to avoid activity or exertion; lazy.
Example
The indolent cat slept in the sun all afternoon.
懒惰的猫整天躺在阳光下睡觉。
C2 verb /ɪnˈdʒɛst/

ingest

摄取
Meaning
To take food, drink, or another substance into the body, usually by swallowing.
Example
The patient must ingest the medicine with water.
病人必须用水服用药物。
C2 adjective /ˌɪn.ɪˈlʌk.tə.bəl/

ineluctable

Meaning
Impossible to avoid or escape; inevitable.
Example
Death is an ineluctable part of human existence.
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 /ɪˈluːmɪnənt/

illuminant

光源
Meaning
A substance or device that produces light.
Example
The lamp acted as an illuminant in the dark cave.
这盏灯在黑暗的洞穴中充当了光源。
C2 adverb /ˌɪnsəʊˈmʌtʃ/

insomuch

如此
Meaning
to such an extent
Example
He was insomuch tired that he could hardly stand.
他累得几乎站不起来。
C2 noun /aɪˈdɒlətri/

idolatry

偶像崇拜
Meaning
The worship of idols or extreme admiration for someone or something.
Example
The priest condemned the idolatry practiced in the village.
牧师谴责了在村里实践的偶像崇拜。
C2 conjunction /ˌɪnəzˈmʌtʃ æz/

inasmuch-as

因为
Meaning
Because; since.
Example
He cannot attend, inasmuch as he is unwell.
他不能参加，因为他生病了。
C2 verb /ˈɪmprɪkeɪt/

imprecate

诅咒
Meaning
To utter a curse or invoke evil upon someone.
Example
The old woman imprecated her enemies with dark words.
老女人用黑暗的词语诅咒她的敌人。
C2 noun /ɪnˈtɛɡ.jʊ.mənt/

integument

外部覆盖物
Meaning
A natural outer covering, such as skin, shell, or rind.
Example
The snake sheds its integument as it grows.
蛇在生长过程中脱掉外部覆盖物。
C2 adjective /ɪmˈpɑːlɪtɪk/

impolitic

不明智的
Meaning
Unwise or imprudent; not showing good judgment.
Example
It would be impolitic to criticize them openly.
公开批评他们是不明智的。