ancestress
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C2 noun /ˈænsɛstrɪs/

ancestress

女性の祖先
Meaning
a female ancestor; a woman from whom one is descended
Example
She discovered that her ancestress came from a small village in Bengal.
彼女は自分の女性の祖先がベンガルの小さな村出身だと知った。
C2 adjective /ɪˈmɒdərət/

immoderate

過度な
Meaning
excessive; beyond reasonable limits
Example
He has an immoderate love for sweets.
彼はお菓子に対して過度の愛情を持っています。
C2 adjective /rɪˈfræktəri/

refractory

反抗的
Meaning
Stubborn or resistant to control, authority, or treatment.
Example
The refractory child refused to follow the teacher's instructions.
反抗的な子供は教師の指示に従うのを拒否した。
C2 verb /ˈɪndjʊˌreɪt/

indurate

硬化する
Meaning
To harden or make something physically or emotionally tough.
Example
Years of hardship indurated his spirit.
長年の困難が彼の精神を鍛えました。
C2 noun /ˈpɑːdreɪ/

padre

神父
Meaning
A title for a priest, especially in the Roman Catholic Church; also used informally for 'father'.
Example
The soldiers attended mass led by the padre.
兵士たちは神父が主催したミサに参加しました。
C2 noun /ˌdɪsprəˈpɔːrʃən/

disproportion

不均衡
Meaning
a lack of balance or symmetry; an inequality
Example
There is a clear disproportion between rich and poor in many societies.
多くの社会において、富裕層と貧困層の間に明確な不均衡があります。
C2 verb /ɪmˈbruː/

imbrue

汚す
Meaning
To stain, especially with blood.
Example
His hands were imbrued with blood after the battle.
戦いの後、彼の手は血で汚れていた。
C2 noun /ɡæsˈtraɪtɪs/

gastritis

ガストリティス
Meaning
Inflammation of the lining of the stomach.
Example
The doctor diagnosed him with gastritis after his endoscopy.
医師は内視鏡検査後に彼にガストリティスと診断しました。
C2 noun /blɑːtʃ/

blotch

しみ
Meaning
a large, irregular spot or stain, often on skin or fabric
Example
His shirt had a red blotch from the spilled juice.
彼のシャツにはこぼれたジュースで赤いしみがついていた。
C2 adjective /ˈlɪtərəl/

littoral

沿岸の
Meaning
Related to or situated on the shore of the sea or a lake.
Example
The littoral zone is home to many unique marine species.
沿岸地域は多くのユニークな海洋種の生息地です。
C2 noun /ˈsʌbtərˌfjuːdʒ/

subterfuge

策略
Meaning
Deceit used to achieve one's goal; a trick or excuse to evade something.
Example
They used subterfuge to avoid paying taxes.
彼らは税金を回避するために策略を使った。
C2 adjective /ˈvækjuəs/

vacuous

空虚
Meaning
Having or showing a lack of thought or intelligence; mindless.
Example
She gave a vacuous smile during the serious discussion.
彼女は真剣な議論の中で空虚な笑顔を見せた。
C2 noun /ˈplɛdʒiː/

pledgee

担保として何かを譲渡された人物
Meaning
a person to whom something is pledged or given as security
Example
The bank is the pledgee of the collateral until the loan is repaid.
銀行はローンが返済されるまで担保の債権者です。
C2 adjective /ˈvɛndɪbəl/

vendible

販売可能な
Meaning
Capable of being sold; marketable.
Example
Only vendible products were displayed at the trade fair.
販売可能な商品だけが展示会に出展されました。
C2 adjective /ˈɑːsɪˌfaɪd/

ossified

骨に変わった、硬直した
Meaning
Turned into bone or become rigid; unwilling to change.
Example
The company had an ossified management structure that resisted innovation.
その会社は、革新に抵抗する硬直した管理構造を持っていました。
C2 noun /ˈdeɪ.ɪs/

Dais

演壇
Meaning
a raised platform, typically at one end of a room or hall, for speakers or honored guests
Example
The principal stood on the dais to address the entire school assembly.
校長は演壇に立ち、全校集会に話しかけました。
C2 noun /moʊt/

mote

微粒
Meaning
A tiny particle or speck, especially of dust.
Example
A mote of dust floated in the sunlight.
ほこりの微粒が日光の中で浮かんでいた。
C2 verb /ˈwiːdəl/

wheedle

お世辞で説得する
Meaning
to persuade or coax someone by using flattery or smooth talk
Example
She managed to wheedle extra pocket money from her father.
彼女は父親から追加の小遣いを得ることに成功した。
C2 noun /kɒɡˈnoʊmən/

cognomen

苗字 / あだ名
Meaning
A family name or surname; an additional name or nickname.
Example
His cognomen became widely known in literary circles.
彼の苗字は文学界で広く知られている。
C2 noun /ˌkʌl.pəˈbɪl.ɪ.ti/

culpability

有罪
Meaning
responsibility for a fault or wrong; blameworthiness
Example
The jury considered his level of culpability in the crime.
陪審員はその犯罪における彼の有罪の程度を考慮しました。
C2 noun /əˌkædəˈmɪʃən/

academician

学者
Meaning
a member of an academy; a scholar or expert in a field of study
Example
The academicians gathered to discuss the future of education.
学者たちは教育の未来について話し合った。
C2 noun /næˈteɪʃən/

natation

水泳
Meaning
The act or sport of swimming.
Example
She took lessons in natation to improve her swimming skills.
彼女は泳ぎの技術を向上させるために水泳のレッスンを受けました。
C2 noun/verb /sluːs/

sluice

水門 / 洗う
Meaning
A sliding gate for controlling the flow of water; to wash or rinse with water in large quantities.
Example
The workers sluiced the mud off the street after the heavy rain.
作業員は大雨の後に通りから泥を洗い流しました。
C2 noun /ˌmæskəˈreɪd/

masquerade

人々が仮面と衣装を着て集まるパーティー
Meaning
a party or gathering where people wear masks and costumes; a false outward show
Example
The charity event was held as a grand masquerade.
チャリティイベントは大きなマスカレードとして開催されました。
C2 adjective /ˈməʊdɪʃ/

modish

流行の
Meaning
conforming to or following current fashion or style
Example
She wore a modish outfit that caught everyone’s attention.
彼女はモディッシュな服を着て、みんなの注目を集めていました。
C2 verb /ˌæpərˈteɪn/

appertain

関係する
Meaning
to relate to or be connected with something
Example
The rules only appertain to members of the club.
その規則はクラブのメンバーにのみ関係しています。
C2 noun /mɪˈsænθrəpi/

misanthropy

人類嫌悪
Meaning
a general dislike, distrust, or hatred of humankind
Example
His misanthropy was evident in the way he avoided people.
彼の人類嫌悪は、彼が人々を避ける方法に明らかに現れていました。
C2 noun /ˈpɔːrtɛnt/

portent

前兆
Meaning
A sign or warning that something, especially something momentous or calamitous, is likely to happen.
Example
The sudden drop in stock prices was seen as a portent of economic trouble.
株価の急落は、経済的な問題の前兆として見なされました。
C2 verb /ˈhɑːbəl/

hobble

よろけて歩く
Meaning
to walk awkwardly with difficulty, usually due to injury
Example
He hobbled across the room after twisting his ankle.
彼は足首をひねった後、部屋をよろよろと歩いた。
C2 adjective /ˈkoʊməˌtoʊs/

comatose

昏睡状態の
Meaning
In a state of deep unconsciousness, resembling or related to coma.
Example
The comatose patient was kept under constant observation.
その昏睡状態の患者は、継続的に観察されていました。
C2 adjective /ˈoʊdiəs/

odious

忌まわしい
Meaning
extremely unpleasant or repulsive
Example
The dictator was remembered for his odious crimes.
その独裁者は彼の忌まわしい犯罪で記憶されました。
C2 adjective /ˌhæɡ.i.əˈɡræf.ɪk/

hagiographic

過度に賛美的な
Meaning
Excessively flattering or idealized, often in a biography or portrayal of someone.
Example
The documentary was criticized for its hagiographic portrayal of the leader.
そのドキュメンタリーはリーダーの過度に賛美的な描写で批判されました。
C2 noun /skʌlˈdʌɡəri/

skulduggery

不正行為
Meaning
underhanded or dishonest behavior
Example
The politician was accused of financial skulduggery.
その政治家は金融詐欺で告発された。
C2 verb /fɔːrˈfɛnd/

forfend

守る, 防ぐ, 防止する
Meaning
to protect or defend against something undesirable; to prevent
Example
May good fortune forfend any danger from our journey.
良い運が私たちの旅からどんな危険も防いでくれますように。
C2 noun /ˈtoʊ.di/

Toady

おべっか使い
Meaning
a person who acts obsequiously to gain favor; a sycophant
Example
He was known as a toady who always agreed with the boss.
彼は常に上司と同意していたおべっか使いとして知られていました。
C2 verb /ˈkæn.tər/

canter

軽いギャロップ
Meaning
To ride a horse at a controlled, easy pace between a trot and a gallop.
Example
She cantered her horse across the field with ease.
彼女は馬を簡単にフィールドを走らせた。
C2 noun /ˈæktʃuˌɛri/

actuary

アクチュアリー
Meaning
A professional who analyzes financial risk using mathematics, statistics, and financial theory, especially in insurance and pensions.
Example
The actuary calculated the risk before finalizing the insurance policy.
アクチュアリーは保険契約を最終決定する前にリスクを計算しました。
C2 adjective /ˈbʊərɪʃ/

boorish

粗野
Meaning
Rude, insensitive, and lacking manners or refinement.
Example
His boorish behavior ruined the dinner party.
彼の粗野な行動はディナーパーティーを台無しにした。
C2 adjective /sʌbˈdʒeɪsənt/

subjacent

下層の
Meaning
lying immediately beneath; underlying
Example
The geological survey revealed subjacent layers of rock.
地質調査は下層の岩層を明らかにした。
C2 adjective /vɛˈstɪdʒiəl/

vestigial

遺物の
Meaning
Relating to a small, undeveloped remnant of something that was once much larger or more functional.
Example
Humans have a vestigial tailbone that no longer serves its original purpose.
人間にはもはや元の機能を果たさない遺物の尾骨があります。
C2 adjective /ˈrɛɡnənt/

regnant

統治している
Meaning
Reigning; currently holding power, authority, or dominance.
Example
The regnant queen introduced several reforms during her reign.
統治している女王は、彼女の統治期間中にいくつかの改革を導入しました。
C2 adjective /ˌɪnæprɪˈhɛnsəbl/

inapprehensible

理解不能
Meaning
not understandable; incomprehensible
Example
The concept was so abstract that it seemed inapprehensible to most students.
その概念は非常に抽象的で、ほとんどの学生には理解できないように思えた。
C2 verb /ˌweɪˈleɪ/

waylay

突然立ち止まる / 攻撃する
Meaning
to stop or interrupt someone unexpectedly, often to attack or detain them
Example
He was waylaid by reporters as he left the courthouse.
彼は裁判所を出るとき、記者に道を遮られた。
C2 noun /ɪmˈpruː.dəns/

Imprudence

無分別; 不注意; 軽率
Meaning
the quality of being imprudent; lack of care for consequences; recklessness
Example
His financial imprudence led to bankruptcy within just two years.
彼の財務の無分別は、わずか2年で破産を招いた。
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 noun /sɒp/

sop

Meaning
a concession or appeasement to pacify someone; also a piece of bread dipped in liquid
Example
The manager offered a bonus as a sop to the unhappy employees.
C2 noun /ˈbɒmbæst/

bombast

大げさな言葉
Meaning
speech or writing that is overly pompous and inflated
Example
His campaign speech was full of bombast but lacked real substance.
彼の選挙演説はボンバストに満ちていたが、実際の実質は欠けていた。
C2 noun /ˌproʊɪˈbɪʃənɪst/

prohibitionist

禁酒主義者
Meaning
A person who supports or advocates prohibition, especially of alcohol.
Example
The prohibitionist campaigned against the sale of liquor in the town.
禁酒主義者は町での酒の販売に反対するキャンペーンを行った。
C2 noun /ˈmænˌiː.tər/

man-eater

人食い
Meaning
An animal that kills and eats humans; informally, a woman who is very assertive in relationships.
Example
The tiger became a notorious man-eater in the village.
その虎は村で悪名高い人食いとなった。
C2 noun /hɪˈdʒɛməni/ or /ˈhɛdʒəmoʊni/

hegemony

覇権
Meaning
leadership or dominance, especially by one state or group over others
Example
The empire maintained its hegemony over neighboring states.
帝国は隣国に対してその覇権を維持した。
C2 noun /ˌtɜːdʒɪvərˈseɪʃən/

tergiversation

回避, 二重性
Meaning
Evasion of straightforward action or speech; changing sides or being inconsistent.
Example
The politician’s tergiversation frustrated his supporters.
その政治家のタージヴァーセイションは彼の支持者を失望させた。
C2 adjective /ɪmˈpruːdənt/

imprudent

不注意な
Meaning
Not showing care for the consequences of an action.
Example
It was imprudent to drive in such stormy weather.
こんな嵐の天気で運転するのは不注意だった。
C2 noun /ˈɛərəˌnɔːt/

aeronaut

気球乗り
Meaning
A person who travels in an airship, balloon, or other aircraft.
Example
The aeronaut skillfully guided the hot-air balloon across the valley.
気球乗りは巧みに気球を谷を越えて操縦しました。
C2 verb /ˈtʃæfɪŋ/

chaffing

からかう
Meaning
Teasing or joking in a lighthearted way.
Example
They were chaffing each other during lunch.
彼らは昼食中にお互いに冗談を言っていた。
C2 verb /ˈmʌfəl/

muffle

抑える
Meaning
to make a sound quieter or less distinct; to cover or wrap something to reduce noise or warmth
Example
She tried to muffle her laughter with a scarf.
彼女はスカーフで笑い声を抑えようとした。
C2 verb /əˈɡrɛs/

aggress

攻撃する
Meaning
to initiate an attack or show hostile behavior
Example
The army chose not to aggress without provocation.
軍隊は挑発なしに攻撃しないことを決定しました。
C2 adjective /əˈstrɪndʒənt/

astringent

厳しい
Meaning
sharp or severe in manner or style; also describes a substance that contracts skin or body tissues
Example
Her astringent tone silenced the noisy class.
彼女の厳しい口調は、騒々しいクラスを静めた。
C2 noun /ɪˈpɪsəl/

epistle

書簡
Meaning
A letter, especially a formal or didactic one; often used for letters in the New Testament.
Example
He wrote a long epistle to his friend about his travels.
彼は自分の旅行について友人に長い手紙を書いた。
C2 adjective /ˈhaɪd.baʊnd/

hidebound

Meaning
unwilling or unable to change because of tradition or convention
Example
He is too hidebound to accept new ideas.
C2 noun /ˈprɛləsi/

prelacy

教会制度
Meaning
The office, dignity, or system of church government by prelates.
Example
The medieval church was dominated by prelacy and its traditions.
中世の教会はプレラシーとその伝統によって支配されていた。
C2 noun /ˈɡælvəˌnɪzəm/

galvanism

ガルバニズム
Meaning
Electricity produced by chemical action, especially in a battery; the therapeutic use of electricity in medicine.
Example
Galvanism played a key role in early experiments with electricity.
ガルバニズムは初期の電気実験で重要な役割を果たしました。
C2 noun /brəˈkeɪd/

brocade

刺繍布
Meaning
a rich fabric woven with a raised pattern, often in gold or silver thread
Example
She wore a beautiful brocade dress to the wedding.
彼女は結婚式で美しいブロケイドのドレスを着ていました。
C2 adjective /ˈpɛkəbl/

peccable

過ちを犯しやすい
Meaning
liable to sin or error; capable of doing wrong
Example
Humans are peccable, but they strive for goodness.
人間は過ちを犯しやすいが、善を追い求める。
C2 verb /ˈmæŋɡəl/

mangle

ひどく壊す
Meaning
to severely damage or mutilate something, often by tearing or crushing
Example
The car was mangled in the accident.
車は事故でひどく壊れた。
C2 verb /fɪˈneɪɡəl/

finagle

巧妙さや騙しで物を得る
Meaning
to obtain something by cleverness or trickery
Example
He finagled a free ticket by pretending to be a VIP guest.
彼はVIPゲストだと偽って無料チケットを手に入れた。
C2 noun /ˈbʌɡəˌbuː/

bugaboo

恐怖 / 不安
Meaning
An object of fear or worry; an imagined cause of anxiety.
Example
The threat of inflation became a political bugaboo.
インフレーションの脅威は政治的な恐怖に変わった。
C2 verb /ˈbɒtənaɪz/

botanize

植物を研究する
Meaning
to study plants in their natural environment
Example
They went to the forest to botanize during their vacation.
彼らは休暇中に森で植物を研究しました。
C2 noun /ˈhɑːstəlri/

hostelry

宿泊施設
Meaning
An inn or lodging place, especially one for travelers.
Example
They stayed at a small hostelry near the mountains.
彼らは山の近くの小さな宿泊施設に泊まりました。
C2 noun /ˌbuː.ɡənˈvɪl.i.ə/

Bougainvillea

ブーゲンビリア
Meaning
a tropical climbing plant with colorful bracts surrounding small flowers
Example
The bougainvillea climbing over the garden wall creates a beautiful purple display.
庭の壁を登るブーゲンビリアが美しい紫色の展示を作り出します。
C2 adjective /trænzˈæl.paɪn/

transalpine

アルプスを越えて
Meaning
situated beyond or across the Alps, especially from the viewpoint of Italy
Example
The Romans referred to France as Transalpine Gaul.
ローマ人はフランスをトランザルピン・ガリアと呼んでいました。
C2 adjective /ˈlɪŋɡwəl/

lingual

舌に関連する
Meaning
Relating to the tongue or speech.
Example
The dentist examined the patient's lingual surface of the teeth.
歯科医は患者の歯の舌側面を調べました。
C2 noun /flæks/

flax

フラックス
Meaning
a plant whose fibers are used to make linen and whose seeds are edible
Example
Flax is often used in making linen fabrics.
フラックスは、リネン生地を作るために頻繁に使用されます。
C2 adjective /ˈlæŋɡwɪd/

Languid

無気力な; 怠け者の; 弱い
Meaning
lacking energy or vitality; slow and relaxed; weak or faint
Example
After the long journey, she felt languid and needed to rest.
長い旅の後、彼女は無気力に感じ、休む必要があった。
C2 noun /ˈkærəˌpeɪs/

carapace

カメやカニの背中を覆う硬い殻
Meaning
the hard shell covering the back of some animals like turtles and crabs
Example
The turtle withdrew into its carapace for protection.
カメは保護のためにカラパスに引っ込んだ。
C2 adjective /ˌhaɪpərˈkrɪtɪkl/

hypercritical

過剰に批判的な
Meaning
Excessively or unreasonably critical.
Example
The teacher was often hypercritical of small mistakes.
教師は小さなミスに対して過剰に批判的でした。
C2 noun /fɪˈlæt.əl.ɪst/

philatelist

切手収集家
Meaning
a person who collects or studies postage stamps
Example
The philatelist spent years building a rare stamp collection.
そのフィラテリストは、希少な切手コレクションを作るために何年も費やしました。
C2 noun /lɪˈbrɛtoʊ/

libretto

オペラの台本
Meaning
The text of an opera or other long vocal work.
Example
She studied the libretto before attending the opera performance.
彼女はオペラの公演に行く前にリブレットを勉強しました。
C2 noun /ˌætəlˈjeɪ/

atelier

アトリエ（アーティストやデザイナーのスタジオ）
Meaning
A workshop or studio, especially for an artist or designer.
Example
The painter invited us to his atelier to view his new collection.
画家は私たちを彼のアトリエに招待し、新しいコレクションを見せてくれました。
C2 adjective /ˈfɪnɪki/

finicky

気難しい; 詳細に非常にこだわる
Meaning
difficult to please; very particular about details
Example
He is so finicky about his food that he only eats organic vegetables.
彼は自分の食べ物に対してとても細かいので、有機野菜だけを食べます。
C2 noun /ˈbɪbliəfaɪl/

bibliophile

書籍愛好者
Meaning
A person who loves or collects books.
Example
She is a true bibliophile who spends weekends at old bookstores.
彼女は古い本屋で週末を過ごす本の愛好者です。
C2 noun /ˈhaɪdrə/

hydra

ヒドラ
Meaning
a many-headed serpent in Greek mythology; a problem that seems to grow worse when attempts are made to solve it
Example
Corruption is like a hydra, hard to defeat completely.
汚職はヒドラのようで、完全に打ち負かすのは難しい。
C2 adjective /ʌpˈrɔːr.i.əs/

uproarious

非常に面白い
Meaning
Extremely funny or noisy; causing loud laughter or commotion.
Example
The comedian's jokes were absolutely uproarious.
コメディアンのジョークは絶対に非常に面白かったです。
C2 verb /bɪˈleɪbər/

belabor

Meaning
to argue or elaborate on a subject in excessive detail; to attack verbally or physically
Example
The professor belabored the point until the students grew restless.
C2 noun /ˈɡoʊld.moʊ.hɜːr/

Goldmohur

黄花木
Meaning
A tropical tree with bright orange-red flowers, also known as flame tree or royal poinciana
Example
The goldmohur tree bloomed beautifully in the summer heat.
夏の暑さの中で、ゴールドモフルの木は美しく花を咲かせた。
C2 verb /ˈɡɑːɡəl/

goggle

目を見開いて見る
Meaning
to stare with wide open eyes, often in surprise or wonder
Example
The tourists goggled at the tall skyscrapers.
観光客は高い摩天楼を驚きながら見つめていた。
C2 verb /ˈpɛrəɡrɪˌneɪt/

peregrinate

幸福
Meaning
To travel or wander from place to place.
Example
He loved to peregrinate across the countryside during summer.
彼女は賞を受け取ったとき、自分の幸福を隠せませんでした。
C2 noun /ˈkwɒdrʊpɛd/

quadruped

Meaning
an animal that walks on four feet
Example
Most mammals are quadruped creatures adapted for running and stability.
C2 verb ˈɪn.kʌl.keɪt

inculcate

教え込む
Meaning
Instill an attitude, idea, or habit by persistent instruction; to teach and impress by frequent repetitions.
Example
Parents should inculcate good values in their children.
親は子供たちに良い価値観を教え込むべきだ。
C2 noun /ɪnˈvɛstɪtʃər/

investiture

任命式
Meaning
the formal ceremony of conferring authority, rank, or office
Example
The king held an investiture ceremony for the new knight.
王は新しい騎士のために任命式を開催しました。
C2 adjective /əˈdʌltəreɪtɪd/

adulterated

Meaning
describes food, drink, or medicine made weaker or impure by the addition of another substance
Example
Authorities seized adulterated drugs from the warehouse.
C2 verb /ˈkælsɪfaɪ/

calcify

カルシウム塩の沈着によって硬化する
Meaning
To harden by deposition of calcium salts; to become rigid or inflexible.
Example
Over time, the tissue began to calcify and lose flexibility.
時間が経つにつれて、組織はカルシファイして柔軟性を失いました。
C2 verb /ˌdɒmɪˈnɪə/

domineer

支配する
Meaning
to assert one's will over another in an arrogant way
Example
He tends to domineer over his younger colleagues.
彼は若い同僚に対して支配的な態度を取ることが多い。
C2 noun /ˈɪntəˌkrɒpɪŋ/

intercropping

間作農業
Meaning
The agricultural practice of cultivating two or more crops simultaneously in the same field to maximize land use efficiency and improve soil health.
Example
Intercropping can help improve soil fertility and pest control.
間作農業は土壌の肥沃度と害虫管理の向上に役立ちます。
C2 noun /dɪˈmʌrɪdʒ/

demurrage

デマレッジ
Meaning
a charge payable to the owner of a ship or vehicle for not loading or unloading on time
Example
The company had to pay demurrage for delaying the unloading of goods.
会社は荷物の荷降ろしの遅れでデマレッジを支払わなければならなかった。
C2 adjective /ˌɛkstrəˌdʒuːˈdɪʃəl/

extrajudicial

司法外
Meaning
done outside the authority of the legal system or judicial process
Example
The activists condemned the extrajudicial killings.
活動家たちは司法外での殺人を非難しました。
C2 noun /ˈkloʊtʃər/

cloture

討論終了手続き
Meaning
a procedure for ending a debate and taking a vote.
Example
The Senate invoked cloture to end the lengthy debate.
上院は長時間の討論を終わらせるためにクロチュールを適用しました。
C2 noun /bɪˈtroʊðəl/

betrothal

婚約
Meaning
The formal engagement to be married.
Example
Their betrothal was announced to the whole village.
彼らの婚約は村中に発表されました。
C2 noun /ˈkʌvən/

coven

魔女の集まり
Meaning
a group or gathering of witches
Example
The witches met secretly in a coven in the forest.
魔女たちは森の中で魔女の集まりに密かに集まりました。
C2 adjective /ˌæk.si.əˈmæt.ɪk/

axiomatic

自明の，証明の必要のない明らかな真実
Meaning
Self-evident, obviously true without need for proof
Example
It is axiomatic that hard work leads to success.
一生懸命働くことは自明であり、成功につながります。
C2 noun /ˈplɛdʒɔːr/

pledgeor

保証人
Meaning
a person who gives or offers a pledge or security
Example
The bank accepted the jewelry from the pledgeor as collateral for the loan.
銀行は貸付の担保として保証人から宝石を受け入れました。
C2 noun/adjective /ˈæl.əˌbæs.tər/

alabaster

アラバスター（白い鉱物）
Meaning
A fine-grained, usually white variety of gypsum, often used for carving; also describes something smooth and pale like alabaster.
Example
The statue was carved from pure alabaster.
その像は純粋なアラバスターで彫られました。
C2 adjective /ˈflaɪti/

flighty

不安定
Meaning
unstable, impulsive, or easily distracted; lacking seriousness or stability
Example
She’s too flighty to stick with one job for long.
彼女は一つの仕事に長く留まるには不安定すぎる。
C2 verb /ˌmɪskənˈstruː/

misconstrue

誤解する
Meaning
To interpret something wrongly or misunderstand the meaning.
Example
She misconstrued his silence as anger.
彼女は彼の沈黙を怒りだと誤解した。
C2 noun /ˈplɛntɪtjuːd/

plentitude

豊富さ
Meaning
the condition of being full or abundant
Example
The garden offered a plentitude of flowers in spring.
庭園は春に花の豊富さを提供しました。
C2 noun /wiːl/

weal

幸福
Meaning
A raised mark on the skin left after a blow; or general well-being and prosperity.
Example
The charity worked for the common weal of the community.
彼女は賞を受け取ったとき、喜びを隠すことができませんでした。
C2 adjective /ˈfiːbraɪl/

febrile

発熱の、興奮した
Meaning
having or showing the symptoms of a fever; or highly excitable or agitated
Example
The patient was in a febrile state with high temperature.
患者は高い温度の熱の状態にありました。
C2 noun /ˌɔːltərˈkeɪʃən/

altercation

口論, 言い争い
Meaning
a noisy argument or quarrel
Example
There was a brief altercation between the two drivers.
二人のドライバーの間で短い口論がありました。
C2 adjective /ˈɑːrtləs/

artless

素朴, 自然
Meaning
Without deception or pretentiousness; natural and simple.
Example
Her artless smile made everyone feel at ease.
彼女の素朴な笑顔は、みんなを安心させました。
C2 verb /ˈdʌmfaʊnd/

dumbfound

呆然とさせる
Meaning
to greatly astonish or shock someone so they are temporarily speechless
Example
The magician's trick dumbfounded the audience.
マジシャンの技は観客を呆然とさせた。
C2 adjective /ˈsɪbɪlaɪn/

sibylline

神託的
Meaning
Prophetic, mysterious, or cryptic in meaning.
Example
The old woman gave a sibylline warning about the future.
その老婦人は未来について神託的な警告をした。
C2 adjective /ˈɛrzæts/

ersatz

代用品
Meaning
made or used as a substitute, typically an inferior one
Example
The cheap shoes were made of ersatz leather.
安い靴は代用品の合成皮革で作られていました。
C2 verb /bɪˈθɪŋk/

bethink

思い出す
Meaning
to cause oneself to consider or remember something
Example
He bethought himself of the promise he had made.
彼は自分がした約束を思い出した。
C2 verb /ˈkæstɪˌɡeɪt/

castigate

厳しく非難する
Meaning
To criticize someone severely or to punish harshly.
Example
The teacher castigated the students for their poor behavior.
教師は生徒たちの悪い行動を叱責しました。
C2 verb /dʒaɪb/

gibe

嘲笑する
Meaning
To make insulting or mocking remarks; to taunt.
Example
The fans gibed at the losing team.
ファンは負けたチームを嘲笑しました。
C2 noun /ˈkɔːfər/

coffer

金庫
Meaning
A strongbox or small chest for holding valuables, often used metaphorically for funds or financial reserves.
Example
The city's coffers were drained after the costly project.
高額なプロジェクトの後、都市の金庫は空になりました。
C2 adjective /ˈvæpɪd/

vapid

退屈な
Meaning
lacking liveliness, flavor, or interest; dull and uninspired
Example
The lecture was so vapid that half the audience fell asleep.
講義は退屈すぎて、観客の半分が寝てしまった。
C2 noun /trɪˈplɪs.ə.ti/

triplicity

三重性
Meaning
The state of being triple or consisting of three parts.
Example
The design shows a triplicity of forms combined harmoniously.
デザインは、調和の取れた形態の三重性を示しています。
C2 verb /ˈwɛltər/

welter

混乱の中で転がる
Meaning
to roll or toss about in a confused or disorderly way; to be in turmoil
Example
The city weltered in chaos after the sudden blackout.
突然の停電後、都市は混乱の中に沈んだ。
C2 verb /əˈbeɪs/

abase

卑下する
Meaning
to belittle or degrade someone
Example
He refused to abase himself before the king.
彼は王の前で自分を卑下するのを拒否した。
C2 noun /ˈsɑːrdʒənt ət ɑːrmz/

sergeant-at-arms

会議警備員
Meaning
An officer responsible for maintaining order during meetings or legislative sessions.
Example
The sergeant-at-arms escorted the disruptive member out of the hall.
会議警備員は、秩序を乱すメンバーを会場から退場させました。
C2 noun /ˈbʌt.ə.flaɪ piː/

Butterfly Pea

蝶豆
Meaning
a blue flowering plant with butterfly-shaped flowers, used to make herbal tea
Example
Butterfly pea flowers turn tea into a beautiful blue color.
蝶豆の花はお茶を美しい青色に変えます。