diurnal
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C2 adjective /daɪˈɜːrnəl/

diurnal

昼行性
Meaning
active during the day; occurring daily
Example
Most birds are diurnal creatures, active in daylight hours.
ほとんどの鳥は昼行性の生き物で、日中に活動しています。
C2 noun /ˈlʊŋ.gi/

Lungi

ルンギ
Meaning
a traditional garment worn around the waist in South Asia
Example
He wore a comfortable lungi while relaxing at home.
彼は家でくつろいでいるときに快適なルンギを着ていました。
C2 noun /ˌkɑːnfɔːrˈmeɪʃən/

conformation

形態
Meaning
The shape, structure, or arrangement of something.
Example
The scientist studied the molecular conformation of the protein.
科学者はタンパク質の分子構造を研究した。
C2 adjective /vəˈnɪəriəl/

venereal

性病の
Meaning
relating to sexual intercourse or sexually transmitted diseases
Example
Doctors warn about the dangers of venereal diseases.
医師は性病の危険について警告しています。
C2 noun /kɒˈkeɪd/

cockade

リボンのロゼット
Meaning
a rosette or knot of ribbon, usually worn on a hat as a badge of office or party
Example
The soldier wore a red cockade on his cap.
兵士は帽子に赤いリボンのロゼットを付けていました。
C2 adjective ˌpɜː.spɪˈkeɪ.ʃəs

perspicacious

鋭い洞察力を持つ
Meaning
Having keen insight and understanding; showing acute mental discernment.
Example
The detective's perspicacious nature helped solve the mystery.
探偵の鋭い性格が謎を解くのに役立ちました。
C2 noun /əˈpɒstəsi/

apostasy

背教
Meaning
The abandonment or renunciation of a religious or political belief.
Example
His public apostasy shocked his followers.
彼の公然の背教は彼の支持者を驚かせました。
C2 noun /ˌdaɪəˈlɛktɪk/

dialectic

Meaning
A method of argument or reasoning by dialogue, especially as a means of investigating truth.
Example
The philosopher used dialectic to challenge his students' assumptions.
C2 adjective /ˈædɪˌpoʊs/

adipose

脂肪の
Meaning
Relating to or consisting of animal fat; fatty.
Example
The doctor explained that the tissue was mainly adipose in nature.
医者は、組織が主に脂肪性であることを説明しました。
C2 adjective /ˈhed.i/

Heady

陶酔的
Meaning
having a strong or exhilarating effect; intoxicating; exciting
Example
The heady perfume of jasmine filled the garden.
ジャスミンの陶酔的な香りが庭に満ちていた。
C2 adjective /ɪˈlɪʒən/

elysian

天国の
Meaning
Relating to or characteristic of paradise; delightful and heavenly.
Example
They spent an elysian week on the quiet island.
彼らは静かな島で天国のような一週間を過ごしました。
C2 noun /əˈkjuːtnəs/

acuteness

鋭敏さ;深刻さ
Meaning
sharpness of mind or senses; severity or intensity of a condition
Example
Her acuteness allowed her to notice details others missed.
彼女の鋭敏さは他の人が見逃した細部に気づかせた。
C2 noun /əˈblɪkwɪti/

obliquity

歪み
Meaning
Deviation from moral or usual conduct; indirectness or lack of straightforwardness.
Example
The politician was criticized for the obliquity of his answers.
その政治家は、彼の答えの歪みについて批判された。
C2 noun ˌmʌltɪˈfæsɪtɪd ˌɪnfərˈmeɪʃən ˈfreɪmwɜːrks

multifaceted information frameworks

多面的情報フレームワーク
Meaning
Complex, comprehensive structures for organizing and managing information that have multiple aspects or dimensions.
Example
Digital literacy involves building multifaceted information frameworks.
デジタルリテラシーは多面的な情報フレームワークの構築を含んでいます。
C2 adjective /ˈwɪspi/

wispy

細くて儚い
Meaning
Thin, delicate, and weak in appearance or form.
Example
Her wispy hair blew gently in the breeze.
彼女の細い髪は風にそっと舞っていた。
C2 noun /ˈpælɪˌnoʊd/

palinode

後悔の詩
Meaning
a poem or statement in which the writer retracts something said in an earlier work
Example
The poet wrote a palinode to apologize for his earlier harsh words.
詩人は以前の厳しい言葉を謝罪するために後悔の詩を書きました。
C2 noun /rɪˌdʒuːvəˈnɛsəns/

rejuvenescence

再生
Meaning
the action or process of becoming young or fresh again
Example
The forest showed signs of rejuvenescence after the rains.
雨の後、森は再生の兆しを見せました。
C2 noun /sɪˈmɪlɪtjuːd/

Similitude

類似性; 類似
Meaning
the quality or state of being similar; resemblance
Example
The similitude between the two paintings suggested they were by the same artist.
2つの絵の間の類似性は、それらが同じアーティストによって描かれたことを示唆していました。
C2 noun /ɡaɪl/

guile

策略
Meaning
Cleverness or cunning used to achieve a goal, often in a deceptive way
Example
He used guile to win the negotiation.
彼は交渉で勝つために策略を使った。
C2 noun /rɪˈvaɪlər/

reviler

侮辱者
Meaning
a person who criticizes or insults others abusively
Example
He was known as a reviler of all who opposed him.
彼は自分に反対する全ての人々を侮辱する者として知られていました。
C2 adjective /ˈhaɪdrəs/

hydrous

含水
Meaning
Containing water, especially water of crystallization.
Example
The mineral is hydrous because it contains water molecules in its structure.
その鉱物は水分を含んでいるため、構造内に水分子を含んでいます。
C2 verb /ˈmɪlɪˌteɪt/

militate

妨げる
Meaning
to have a strong effect against something; to work as a powerful factor in preventing or influencing an outcome
Example
His lack of experience will militate against his promotion.
彼の経験不足が昇進に対して障害となるだろう。
C2 noun /ˈdʒæk.dɔː/

Jack-daw

小さなカラス
Meaning
a small gray and black bird of the crow family, known for its intelligence
Example
The jackdaw collected shiny objects for its nest.
ジャックドーはその巣のために輝く物を集めました。
C2 noun /əˈluː.vi.əm/

alluvium

沖積土
Meaning
Fertile soil deposited by flowing water, especially in riverbanks.
Example
The alluvium in riverbanks is highly fertile for agriculture.
川の岸辺にあるアリューヴィウムは農業に非常に肥沃です。
C2 adjective /ˈblɪŋkəd/

blinkered

視野が狭い
Meaning
Having a limited or narrow outlook; unable or unwilling to consider other perspectives.
Example
His blinkered attitude stopped him from seeing the bigger picture.
彼の視野が狭い態度は、より大きな絵を見せなかった。
C2 noun /næt/

Gnat

Meaning
a small flying insect that bites people and animals
Example
The gnat buzzed around my head while I was reading.
私が読書している間、蚊が頭の周りでブンブンと音を立てていた。
C2 adjective /juːˈnɪsənənt/

unisonant

調和の取れた
Meaning
Sounding together or in harmony.
Example
The unisonant voices created a powerful effect.
調和の取れた声が強力な効果を生み出した。
C2 verb /əbˈskɒnd/

abscond

密かに逃げる
Meaning
to leave secretly and quickly, often to avoid arrest or punishment
Example
The thief tried to abscond with the stolen jewelry.
泥棒は盗まれた宝石を持って逃げようとした。
C2 adjective /kɒnˈsæŋɡwɪn/

consanguine

血縁関係の
Meaning
Of the same blood or origin; related by birth.
Example
The two families were consanguine through their grandparents.
二つの家族は彼らの祖父母を通じて血縁関係にあった。
C2 adjective, adverb /ˈsaɪdlɔːŋ/

sidelong

斜め目線
Meaning
Directed to the side; indirect, furtive, or not straightforward.
Example
She gave him a sidelong glance across the room.
彼女は部屋を横切って彼に斜め目線を送った。
C2 noun juːˈbɪkwɪti

ubiquity

遍在性
Meaning
The fact of appearing everywhere or of being very common.
Example
The ubiquity of smartphones has transformed communication.
スマートフォンの遍在性は、コミュニケーションを変革しました。
C2 verb /sweɪð/

swathe

Meaning
To wrap or cover closely or completely.
Example
She swathed the baby in a soft blanket.
C2 noun /ˈvɪntnər/

vintner

ワイン製造者 / ワイン販売者
Meaning
A person who makes or sells wine.
Example
The vintner explained the process of making red wine.
ヴィントナーは赤ワインの作り方を説明しました。
C2 noun /ˈsaɪ.nəˌʃʊr/

cynosure

皆の注目の的
Meaning
A person or thing that is the center of attention or admiration.
Example
She was the cynosure of all eyes at the party.
彼女はパーティーで皆の注目の的でした。
C2 noun /ˈtʃɜː.nɪŋ stɪk/

Churning stick

バターバトン
Meaning
a wooden stick used for stirring and churning butter, milk, or other liquids
Example
Grandmother used a churning stick to make fresh butter.
おばあさんは新鮮なバターを作るためにチャーニングスティックを使いました。
C2 adjective /ˈtʃɜːrlɪʃ/

churlish

無礼
Meaning
Rude in a mean-spirited and surly way.
Example
It would be churlish to refuse her kind invitation.
彼女の親切な招待を断るのは無礼だろう。
C2 noun /ˌɪntərˈrɛɡnəm/

interregnum

政権空白期
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.
国王の死後、国は政権空白期に不安定さに直面した。
C2 verb /ˈmæk.ɪ.neɪt/

machinate

陰謀を企てる
Meaning
to engage in plots or schemes, usually for harmful or evil purposes
Example
The rebels tried to machinate against the king.
反乱者たちは王に対して陰謀を企てようとした。
C2 adjective /ˈæfəbəl/

affable

愛想の良い
Meaning
friendly, easy to talk to, and pleasant in manner
Example
He is such an affable host that everyone feels comfortable at his parties.
彼はとても愛想の良いホストで、誰もが彼のパーティーで快適に感じます。
C2 adjective /ˈrʌdi/

ruddy

赤ら顔
Meaning
Having a healthy red color in the face.
Example
She had a ruddy complexion from working outdoors.
彼女は外で働いたため、赤ら顔でした。
C2 adjective /ˈsʌpliənt/

suppliant

請願者
Meaning
Humbly or earnestly asking for something, especially from a person in authority.
Example
The suppliant man begged for mercy at the king's feet.
請願者は王の足元で慈悲を乞いました。
C2 adjective /ˈleɪ.baɪl/ or /ˈlæb.aɪl/

labile

不安定な
Meaning
easily altered or unstable; prone to change
Example
Her mood was so labile that it changed several times in an hour.
彼女の気分は非常に不安定で、1時間で何度も変わりました。
C2 adjective /ˈplɛntɪəs/

plenteous

豊富
Meaning
existing in great quantity; abundant
Example
The harvest was plenteous, providing enough food for the entire village.
収穫は豊富で、村全体に十分な食料を提供しました。
C2 noun /lɔːŋ ˈpepər/

Long pepper

ロングペッパー
Meaning
a flowering vine in the family Piperaceae, cultivated for its fruit which is used as a spice
Example
Long pepper was more valuable than black pepper in ancient times.
ロングペッパーは古代において黒胡椒よりも価値が高かった。
C2 verb /poʊˈtɛnʃiˌeɪt/

potentiate

強化する
Meaning
To increase the power, effect, or likelihood of something.
Example
Caffeine can potentiate the effects of some medicines.
カフェインは一部の薬の効果を高めることができます。
C2 adjective /ˌmɛrəˈtrɪʃəs/

meretricious

虚偽的
Meaning
apparently attractive but having no real value or integrity.
Example
The design was flashy but meretricious.
デザインは華やかだったが、虚偽的だった。
C2 adjective ˌvɪz.ju.oʊˈspeɪ.ʃəl

visuospatial

視覚を通じて空間と物体の関係を理解することに関連する
Meaning
Related to understanding the relationship between space and objects through vision.
Example
Good visuospatial skills are important for architecture and design.
優れたビジュアルスペーシャルスキルは建築とデザインにとって重要です。
C2 adjective /ˈsɪnjuːi/

sinewy

筋肉質で強い
Meaning
Lean and muscular; strong and tough.
Example
The athlete had a sinewy build that showed his strength.
そのアスリートは筋肉質な体型をしており、力強さを示していた。
C2 noun /əˈmæl.ɡəm/

amalgam

混合物
Meaning
a mixture or blend of different things
Example
The new policy is an amalgam of several previous laws.
新しい政策は、いくつかの以前の法律の混合物です。
C2 /ˈpæn.ə.pli/

panoply

全装備
Meaning
A complete or impressive collection of things; a full set of armor.
Example
The museum displayed a panoply of ancient weapons.
博物館は古代の武器の全装備を展示しました。
C2 adjective /ˈfæsaɪl/

Facile

簡単な; 浅薄な; 深みのない
Meaning
easily achieved; superficial; lacking depth
Example
His facile explanation didn't address the real problem.
彼の簡単な説明は実際の問題に対処しませんでした。
C2 noun/verb /ˈlɛv.ən/

leaven

発酵剤
Meaning
a substance, typically yeast, that causes dough to rise; to permeate and modify
Example
A little yeast will leaven the bread dough.
少しのイーストがパン生地を膨らませる。
C2 adjective /ˈbeɪnfəl/

baneful

有害な
Meaning
Causing harm, ruin, or destruction; deadly or poisonous.
Example
His baneful influence ruined the community.
彼の有害な影響がコミュニティを破壊した。
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 adjective /ˈsɜː.kəm.spekt/

circumspect

慎重, 用心深い, 予見的
Meaning
Wary and unwilling to take risks; careful to consider all circumstances and possible consequences.
Example
Investors must be circumspect before making decisions.
投資家は意思決定を下す前に慎重でなければなりません。
C2 noun /ˈæntɪk/

antic

ユーモア
Meaning
a playful, funny, or silly act or gesture
Example
The children laughed at the clown’s antics.
子供たちはクラウンのユーモアに笑いました。
C2 verb /prɪmp/

primp

幸せ
Meaning
To spend time making minor adjustments to one's appearance.
Example
She primped in front of the mirror before the party.
彼女は賞を受け取ったとき、自分の幸せを隠すことができませんでした。
C2 adjective /ˈpɜːˌblaɪnd/

purblind

盲目または無知
Meaning
Having impaired or defective vision; lacking insight or understanding.
Example
The purblind approach to the problem led to many mistakes.
問題に対する盲目的なアプローチは多くの間違いを招いた。
C2 noun /əˈzeɪ.li.ə/

azalea

アザレアの花
Meaning
a flowering shrub with brightly colored blooms, often grown ornamentally
Example
The garden was full of blooming azaleas in spring.
春にはアザレアの花が咲いていました。
C2 verb /ˈsnʌfəl/

snuffle

鼻で音を立てて息をする
Meaning
to breathe noisily through the nose, often because of crying or a cold
Example
The child began to snuffle after crying for a long time.
子供は長時間泣いた後に鼻で音を立てて息をし始めました。
C2 verb /rɪˈkænt/

recant

撤回する
Meaning
to withdraw or renounce a statement or belief formally
Example
He recanted his previous statement in court.
彼は裁判で以前の発言を撤回しました。
C2 noun /loʊd/

lode

鉱脈
Meaning
A rich source of something, often a vein of valuable metal in the earth.
Example
The miners discovered a rich lode of silver.
鉱夫たちは豊かな銀の鉱脈を発見しました。
C2 verb /ˌɡeɪnˈseɪ/

gainsay

反論する
Meaning
To deny, contradict, or speak against.
Example
No one could gainsay the evidence presented in court.
裁判所で提出された証拠を誰も反論できなかった。
C2 noun /ˈkɪldʒɔɪ/

killjoy

空気を壊す人
Meaning
a person who spoils the fun or enjoyment of others
Example
Don’t be a killjoy at the party.
パーティーで空気を壊す人にならないで。
C2 noun /ˈskɔːrpiən fɪʃ/

Scorpion fish

オニカサゴ
Meaning
a type of fish with venomous spines that belongs to the family Scorpaenidae
Example
The scorpion fish has dangerous spines that can inject venom.
オニカサゴは毒を注入できる危険な棘を持っています。
C2 adjective /ɡɑːrˈɡæntʃuən/

gargantuan

巨大な
Meaning
Extremely large; enormous.
Example
They served a gargantuan meal at the feast.
彼らは宴会で巨大な食事を提供しました。
C2 adjective /ˌsɒpəˈrɪfɪk/

soporific

幸せ
Meaning
tending to induce drowsiness or sleep; causing sleepiness
Example
The professor's lecture was so soporific that half the class fell asleep.
彼女は賞を受け取ったとき、その幸せを隠すことができませんでした。
C2 noun /wɛlp/

whelp

子犬
Meaning
a young offspring of a dog or other carnivorous mammal; sometimes used to mean an impudent young person
Example
The farmer found a wolf whelp hiding near the barn.
農夫は小屋の近くで隠れている狼の子犬を見つけました。
C2 noun ˌɛr.jʊˈdɪʃ.ən

erudition

博学
Meaning
The quality of having or showing great knowledge or learning; scholarship.
Example
His erudition in history impressed the entire audience.
彼の歴史に関する博学は全ての聴衆を感心させた。
C2 noun, adjective /ɪˈklɪptɪk/

ecliptic

黄道
Meaning
The apparent path of the sun across the sky; relating to eclipses or this path.
Example
The ecliptic is the plane of Earth's orbit around the Sun.
黄道は地球の太陽の周りの軌道の平面です。
C2 adjective /ˈhaɪndmoʊst/

hindmost

最も後ろの
Meaning
Farthest back; last in position.
Example
The hindmost car in the convoy broke down first.
隊列で最も後ろの車が最初に壊れた。
C2 noun /draɪ ˈmæŋgoʊ ˈpaʊdər/

Dry Mango Powder

アムチュール
Meaning
a tangy powder made from dried raw mangoes, used as a spice in Indian cuisine
Example
The chef sprinkled dry mango powder over the chaat for extra tanginess.
シェフはチャートに酸味を加えるためにドライマンゴーパウダーを振りかけました。
C2 verb /dɪsˈtɛnd/

distend

膨張する
Meaning
to swell or expand by pressure from within
Example
Her stomach began to distend after the large meal.
大きな食事の後、彼女のお腹は膨らみ始めました。
C2 noun /ˌdiːnəʊˈteɪʃən/

denotation

指示
Meaning
The literal or primary meaning of a word, in contrast to the feelings or ideas that the word suggests.
Example
The denotation of the word 'rose' is a type of flower.
'ローズ'という単語のデノテーションは花の一種です。
C2 verb /bɪˈdaɪzən/

bedizen

派手に飾る
Meaning
to dress up or decorate in a showy or tasteless way
Example
She was bedizened with cheap jewelry.
彼女は安いジュエリーで派手に飾られていた。
C2 noun /ˈhɔːzər/

hawser

船を繋ぐための太いロープ
Meaning
A thick rope or cable used in mooring or towing a ship.
Example
The sailors secured the ship to the dock with a heavy hawser.
船員たちは重いハウザーを使って船をドックに固定しました。
C2 verb /bɪˈleɪ/

belay

ロープを固定する
Meaning
to secure a rope by winding it around an object; to stop or cancel an order (nautical/military use)
Example
The climber asked his partner to belay the rope tightly.
クライマーはパートナーにロープをしっかりと確保するように頼んだ。
C2 adjective /əˈfɔːrsed/

Aforesaid

前述の
Meaning
mentioned before; previously stated
Example
The aforesaid conditions must be met before approval.
前述の条件は承認前に満たす必要があります。
C2 adjective /ˌpɪkəˈjuːn/

picayune

ささいな, 些細な
Meaning
of little value or importance; trivial
Example
He complained about the picayune details of the contract.
彼は契約の些細な詳細について不平を言っていました。
C2 noun /ˈtʃælɪs/

chalice

聖杯
Meaning
A large cup or goblet, typically used for drinking wine in religious ceremonies.
Example
The priest lifted the golden chalice during the ceremony.
祭司は儀式中に金の聖杯を掲げました。
C2 adjective /ˈæn.ə.daɪn/

anodyne

無害な、痛みを和らげる
Meaning
Not likely to cause offense; bland or harmless. Also refers to something that relieves pain.
Example
The speaker’s anodyne remarks avoided controversy.
スピーカーの無害なコメントは論争を避けました。
C2 adjective /ˈsɪlieɪtɪd/

ciliated

繊毛を持つ
Meaning
Having minute hairlike projections (cilia) on the surface of cells or organisms.
Example
The ciliated cells in the respiratory tract help move mucus out of the lungs.
呼吸器官の繊毛細胞は粘液を肺から外に出すのを助けます。
C2 verb /ɡɔːk/

gawk

じっと見る
Meaning
To stare openly and rudely.
Example
Tourists gawked at the celebrity walking down the street.
観光客は通りを歩く有名人をじっと見ていた。
C2 noun /əˌpɒθiˈoʊsɪs/

apotheosis

頂点, 完璧な例
Meaning
The highest point of development; the perfect example of something; the elevation of someone to divine status.
Example
Many see the Renaissance as the apotheosis of art and culture in Europe.
多くの人々はルネサンスをヨーロッパの芸術と文化の頂点と見なしています。
C2 verb /ɪɡˈzʌlt/

exult

歓喜する
Meaning
to show or feel great joy, often as a result of success
Example
The fans exulted after their team won the championship.
ファンたちはチームが優勝した後、歓喜しました。
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。
C2 noun /trʌs/

truss

Meaning
a framework, typically consisting of rafters, posts, and struts, supporting a roof, bridge, or other structure
Example
The engineer designed a strong truss for the new bridge.
C2 noun /ˌsuːdəˈnɪmɪti/

pseudonymity

ペンネームの使用
Meaning
the practice or state of using a pseudonym
Example
The author maintained pseudonymity throughout her career.
その作家はキャリア全体を通してペンネームを使用していました。
C2 noun /ˌɡaɪnəˈkɒkrəsi/

gynecocracy

女性支配
Meaning
a society or government ruled by women
Example
The ancient tribe was known for its gynecocracy, where women held all positions of power.
その古代の部族は、女性がすべての権力を握るギネコクラシーで知られていました。
C2 noun /ˈsweɪʒən/

suasion

説得
Meaning
the act of persuading or influencing someone
Example
The leader used gentle suasion to win support for the plan.
リーダーは計画への支援を得るために穏やかな説得を使用しました。
C2 adjective /ˈprɒvɪdənt/

provident

先見の明のある
Meaning
making or indicative of timely preparation for the future
Example
She was provident in saving money for her children’s education.
彼女は子供たちの教育のためにお金を節約する先見の明のある人だった。
C2 verb /ɪˈstreɪndʒ/

estrange

Meaning
to cause someone to no longer be close or affectionate; to alienate
Example
His constant criticism began to estrange him from his friends.
C2 verb /ˈsʌblɪmeɪt/

sublimate

より高い活動に変換する
Meaning
to redirect strong emotions or desires into socially acceptable activities or channels
Example
She sublimated her anger into painting beautiful landscapes.
彼女は美しい風景を描くことで怒りをサブリメートしました。
C2 noun /ˈtʃæm.pæk/

Champak

チャンパク
Meaning
a fragrant yellow or white flower from a tree native to South Asia, used in perfumes and religious ceremonies
Example
The champak tree in the temple courtyard bloomed with golden flowers.
寺院の中庭にあるチャンパクの木は黄金色の花を咲かせました。
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 noun /ˌprɛsiˈɒsɪti/

preciosity

過度の洗練
Meaning
Excessive refinement or affected elegance in language, style, or behavior.
Example
The author's preciosity made the novel difficult to read for some audiences.
著者の過度の洗練は、いくつかの読者にとって小説を読みづらくしました。
C2 adjective /ˈrɛkənˌdaɪt/ or /ˈrɛkəndaɪt/

recondite

ほとんど知られていない、または理解しにくい
Meaning
Little known or difficult to understand.
Example
The professor’s lecture was full of recondite theories.
教授の講義は難解な理論で満ちていた。
C2 noun /ˈhʌm.ək/

hummock

小丘
Meaning
A small hill, mound, or ridge of earth or ice.
Example
The hikers rested on a grassy hummock by the river.
ハイカーたちは川のそばの草むらの小丘で休憩した。
C2 noun/adjective /ˈtraɪkʌlər/

tricolor

三色旗
Meaning
A flag with three colors; consisting of three colors.
Example
The French tricolor is one of the most famous national flags in the world.
フランスの三色旗は世界で最も有名な国旗の一つです。
C2 noun /ˈmoʊlər/

molar

臼歯
Meaning
A large tooth at the back of the mouth used for grinding food.
Example
The dentist had to extract his wisdom molar.
歯科医は彼の親知らずを抜かなければなりませんでした。
C2 noun /ˌdɪskwɪˈzɪʃən/

disquisition

論文
Meaning
A long or elaborate discussion or written essay on a particular subject.
Example
The professor gave a lengthy disquisition on ancient philosophy.
教授は古代哲学についての長い論文を発表しました。
C2 verb /ˈtɪtər/

titter

小さく笑う
Meaning
to laugh in a quiet, nervous, or restrained way
Example
The students began to titter when the projector froze.
プロジェクターがフリーズすると、学生たちは小さく笑い始めた。
C2 adjective /rɪˈfʌldʒənt/

refulgent

輝く
Meaning
Shining brightly; radiant.
Example
The refulgent sun lit up the entire valley.
輝く太陽が谷全体を照らした。
C2 noun /ˈʒɑːndɑːrm/

gendarme

ジャンダールム
Meaning
A French police officer, especially a member of a military-style police force.
Example
The gendarme stopped the car for a routine check.
ジャンダールムは定期的なチェックのために車を止めた。
C2 adjective /ˈlæk.ti.əl/

lacteal

ミルクに関連するまたはミルクのような
Meaning
Relating to or resembling milk; conveying chyle or milky fluid.
Example
The lacteal vessels in the small intestine absorb dietary fats.
小腸の乳腺血管が食事の脂肪を吸収します。
C2 noun /mɪˈsɑːɡəmi/

misogamy

ミソガミー
Meaning
Hatred or dislike of marriage.
Example
His misogamy prevented him from ever settling down with a partner.
彼のミソガミーは、パートナーと一緒に落ち着くことを妨げた。
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 adjective /ˈmɒθ ˌiːtən/

moth-eaten

虫に食べられた
Meaning
Damaged or worn out, especially by moths or age.
Example
He wore a moth-eaten sweater on the cold day.
彼は寒い日に虫に食べられたセーターを着ていた。
C2 noun /ˌkiː ˈviːv/

qui vive

警戒
Meaning
A state of alertness or vigilance.
Example
The guards were on the qui vive during the night.
警備員は夜間、警戒状態にありました。
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 noun /ˈklæpər/

clapper

鐘の中にある金属部品、鐘を打って音を出す
Meaning
The free-swinging metal piece inside a bell that strikes it to produce sound.
Example
The clapper inside the bell was broken.
鐘の中の金属部品は壊れていた。
C2 adjective /rɪˈsplɛndənt/

resplendent

輝かしい
Meaning
Shining brilliantly; dazzling in appearance or effect
Example
The bride looked resplendent in her wedding gown.
花嫁はウェディングドレスで輝いて見えました。
C2 verb /ɛnˈfrænˌtʃaɪz/

enfranchise

幸福
Meaning
To grant the right to vote or other rights of citizenship.
Example
The new law enfranchised thousands of people.
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 /ˈθiː.ɑːr.ki/

thearchy

神政政治
Meaning
Rule or government by the gods; divine sovereignty.
Example
In ancient cultures, some societies believed in thearchy where gods directly guided human affairs.
古代の文化では、いくつかの社会が神々が人間の事柄を直接導く神政政治を信じていました。
C2 noun /ˈbuː.jɒ̃/

bouillon

ブイヨン
Meaning
A clear, seasoned broth made by simmering meat, fish, or vegetables in water.
Example
She added vegetables to the bouillon for extra flavor.
彼女は味を加えるためにブイヨンに野菜を加えました。
C2 adjective /ɪnˈdjuːbɪtəbl/

indubitable

疑う余地がない
Meaning
Impossible to doubt; unquestionable.
Example
It is indubitable that hard work leads to success.
努力すれば成功に繋がることは疑う余地がない。
C2 adjective /ˈæmbjələˌtɔːri/

ambulatory

外来患者
Meaning
Relating to or able to walk; relating to outpatient medical care.
Example
The patient is ambulatory and does not require bed rest.
その患者は外来患者で、安静が必要ありません。
C2 adjective /ˈbʌlbəs/

bulbous

膨らんだ / 丸い
Meaning
Bulging, round, or swollen in shape; resembling a bulb.
Example
The frog had a bulbous nose and big eyes.
カエルは膨らんだ鼻と大きな目をしていました。
C2 noun /kəˈbɑːdi/

kabadi

廃品回収業者
Meaning
a person who collects and sells scrap or recyclable materials, especially in South Asia
Example
The kabadi came every week to collect old newspapers and bottles.
廃品回収業者は古い物を集めます。
C2 noun /ˌɪndɛnˈteɪʃən/

indentation

インデント
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.
先生は学生にエッセイで適切なインデントを使用するように頼みました。
C2 noun /kaɪˈmɪərə/

chimera

キメラ
Meaning
A mythical creature with parts from different animals; also used to mean a fanciful illusion or unattainable dream.
Example
The idea of a perfect society is often a chimera.
完璧な社会のアイデアはしばしばキメラである。