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C1 verb /ˈstriːm.laɪn/

streamline

効率化または効率を高める
Meaning
To make a process simpler and more efficient.
Example
The company aims to streamline production to reduce costs.
会社はコスト削減のために生産の効率化を目指しています。
C1 verb /ˈsʌkɪŋ/

sucking

吸う
Meaning
Drawing in a liquid, air, or other substance through the mouth or a tube by creating a vacuum; also used figuratively for something unpleasant or ineffective
Example
The baby is sucking on a pacifier.
赤ちゃんが乳首を吸っています。
C1 adjective /ˈsɜːrvɪsəbl/

serviceable

使用可能
Meaning
fit for use; usable; in working order
Example
The old bicycle is still serviceable despite its age.
その古い自転車は年齢に関係なく、まだ使用可能です。
C1 adjective /ˈspel.baʊnd/

Spellbound

夢中; 魅了された
Meaning
completely fascinated and unable to move or think about anything else; enchanted
Example
The children sat spellbound as the magician performed his tricks.
子供たちは魔法使いが技を披露するのを夢中で見ていました。
C1 adjective /ˈskrʌmpʃəs/

scrumptious

美味しい
Meaning
extremely tasty or delicious
Example
She baked a scrumptious chocolate cake for the party.
彼女はパーティーのために美味しいチョコレートケーキを焼きました。
C1 noun /ˈsaɪnəs/

sinus

副鼻腔
Meaning
A cavity within a bone or tissue, especially those in the bones of the face connected with the nasal cavities.
Example
He suffered from a sinus infection that caused headaches.
彼は副鼻腔感染症に苦しんでおり、頭痛を引き起こしました。
C1 adverb /suːˈpɜːb.li/

Superbly

素晴らしく
Meaning
in an excellent or outstanding manner
Example
She performed superbly in the dance competition.
彼女はダンスコンテストで素晴らしくパフォーマンスをしました。
C1 adjective /ˈskeɪðɪŋ/

scathing

辛辣な批評
Meaning
severely critical; harshly scornful
Example
The critic wrote a scathing review of the movie.
批評家は映画について辛辣な批評を書いた。
C1 adjective, verb /sɪˈdeɪt/

sedate

鎮静する
Meaning
calm, quiet, and composed; or to administer a drug to make someone calm or sleep
Example
The nurse sedated the patient before the operation.
看護師は手術の前に患者を鎮静しました。
C1 adjective /ˈsʌltri/

sultry

蒸し暑く湿った、魅力的な
Meaning
Uncomfortably hot and humid; also describes someone attractive in a passionate or sensual way.
Example
The sultry weather made it hard to focus on work.
蒸し暑い天気は仕事に集中するのを難しくしました。
C1 adjective /ˈskwɒlɪd/

squalid

非常に汚い
Meaning
extremely dirty and unpleasant, often due to poverty or neglect
Example
He lived in a squalid room with broken furniture.
彼は壊れた家具のある汚い部屋に住んでいた。
C1 noun /ˈspaɪər/

spire

尖塔
Meaning
a tall, pointed structure on top of a building, especially a church
Example
The church spire could be seen from miles away.
教会の尖塔は遠くから見ることができました。
C1 noun /ˈʃrɪŋkɪdʒ/

shrinkage

収縮
Meaning
The process of becoming smaller in size, amount, or value.
Example
The company reported a shrinkage in profits this quarter.
その会社は今四半期の利益の収縮を報告しました。
C1 adjective /səbˈsɜːviənt/

subservient

Meaning
prepared to obey others unquestioningly; less important than something else
Example
She was too subservient to challenge his decision.
C1 adjective /sɔɪld/

soiled

汚れた
Meaning
dirty or stained; not clean
Example
His clothes were soiled after playing in the mud.
泥遊びをした後、彼の服は汚れていた。
C1 noun /ˈspɛkjʊˌleɪtər/

speculator

投機家
Meaning
A person who forms theories without evidence, or invests in assets hoping for profit.
Example
The real estate speculator bought land hoping its value would rise.
不動産投機家は、土地の価値が上がることを期待して土地を購入しました。
C1 adjective səˈblaɪm

sublime

崇高, 壮大, 卓越
Meaning
Of such excellence, grandeur, or beauty as to inspire great admiration or awe.
Example
The sublime beauty of the mountain landscape took my breath away.
山の風景の崇高な美しさは私の息を奪いました。
C1 verb /ˈswɛltər/

swelter

強烈な暑さで苦しむ
Meaning
to suffer from intense heat
Example
We began to swelter in the midday sun.
私たちは真昼の太陽の下で汗だくになり始めました。
C1 noun /ˈswɪndlɚ/

swindler

詐欺師
Meaning
a person who cheats or deceives others for money or gain
Example
The police finally caught the notorious swindler.
警察はついに悪名高い詐欺師を捕まえた。
C1 verb /smɛlt/

smelt

溶かす
Meaning
to extract metal from its ore by heating and melting
Example
The workers smelt iron from its ore in the factory.
作業員は工場で鉱石から鉄を溶かして取り出します。
C1 noun ˌsɛlf.rɪˈstreɪnt

self-restraint

自己抑制
Meaning
The practice of restraining oneself from indulging in something, typically an impulse or desire.
Example
Practicing self-restraint helps in avoiding impulsive decisions.
自己抑制を実践することで、衝動的な決定を避けるのに役立ちます。
C1 adjective /ˌsɛlf ɪˈfeɪsɪŋ/

self-effacing

控えめな
Meaning
not drawing attention to oneself; modest
Example
Despite his success, he remained self-effacing and humble.
成功にもかかわらず、彼は控えめで謙虚なままでした。
C1 noun /sɪˈsɛʃən/

secession

分離
Meaning
The action of formally withdrawing from membership of a federation or body.
Example
The secession of the southern states led to the Civil War.
南部諸州の分離は南北戦争を引き起こした。
C1 adjective /ˈspraɪtli/

sprightly

活発な
Meaning
full of energy and life; lively
Example
The sprightly old man danced with joy at the wedding.
活発な老紳士は結婚式で喜びながら踊った。
C1 noun /slæb/

slab

スラブ
Meaning
a large, thick, flat piece of stone, concrete, or other hard material
Example
The workers laid a concrete slab for the foundation.
作業員たちは基礎のためにコンクリートのスラブを敷きました。
C1 adjective skiˈmæt.ɪk

Schematic

図式的な、または簡潔な
Meaning
Presenting some framework or concept briefly
Example
The engineer provided a schematic diagram of the project.
エンジニアはプロジェクトのスキマティックな図を提供しました。
C1 adjective /ˈsæv.i/

savvy

賢い, 熟練した
Meaning
Having practical knowledge and the ability to make good judgments.
Example
She is a tech-savvy entrepreneur.
彼女はテクノロジーに詳しい起業家です。
C1 noun /ˈsʌn.stroʊk/

Sunstroke

熱中症
Meaning
a serious condition caused by overheating from prolonged exposure to high temperatures
Example
The worker suffered from sunstroke after working outside all day.
その労働者は一日中外で働いた後、日射病にかかりました。
C1 noun /ˈsɛvərəns/

severance

退職金
Meaning
the act of ending something, especially a relationship or employment; compensation paid upon termination
Example
The company offered him severance pay after his job ended.
会社は彼の仕事が終了した後、退職金を提供しました。
C1 noun /ˈsɑːri/

Saree

サリー
Meaning
a garment consisting of a length of cotton or silk elaborately draped around the body, traditionally worn by women from South Asia
Example
She looked elegant in her red silk saree at the festival.
彼女は祭りで赤い絹のサリーを着てとてもエレガントに見えました。
C1 noun /ˈsɪndɪkət/

syndicate

シンジケート
Meaning
A group of individuals or organizations combined to promote a common interest or carry out a business venture.
Example
A syndicate of investors bought the struggling company.
投資家のシンジケートが困難な会社を買収しました。
C1 adjective /ˈspɛktrəl/

spectral

幽霊のような
Meaning
Relating to a ghost or specter; ghostly. Also relating to a spectrum.
Example
The old mansion had a spectral atmosphere at night.
古い館には夜、幽霊のような雰囲気が漂っていた。
C1 noun /ˈsteɪl.meɪt/

stalemate

行き詰まり
Meaning
A situation in which no progress can be made or no party can win.
Example
Negotiations ended in a stalemate.
交渉は行き詰まりました。
C1 adjective /ˈstɛr.aɪl/

sterile

無菌
Meaning
Free from bacteria or other living microorganisms; incapable of producing offspring.
Example
The surgeon worked in a sterile environment to avoid infection.
外科医は感染を防ぐために無菌環境で働いた。
C1 noun /siˈɛrə klʌb/

Sierra Club

シエラクラブ
Meaning
An American environmental organization founded in 1892 by John Muir, focused on promoting conservation of the natural environment by influencing public policy decisions.
Example
John Muir founded the Sierra Club in 1892 to protect wild areas.
ジョン・ミューアは1892年にシエラクラブを設立し、野生地帯を保護しました。
C1 noun /səˈbraɪəti/

sobriety

節制
Meaning
the state of being sober; self-restraint and seriousness
Example
He has maintained his sobriety for five years.
彼は5年間その節制を保っています。
C1 adjective /ˈsʌn.dri/

sundry

雑多な
Meaning
Various or miscellaneous.
Example
The shop sells fruits, clothes, and sundry items.
その店は果物、衣類、そして雑多な商品を販売しています。
C1 noun /ˈstɪklər/

stickler

規則にうるさい人
Meaning
a person who insists on a certain quality or standard of behavior
Example
He is a stickler for punctuality and never tolerates delays.
彼は時間にうるさく、遅れを許しません。
C1 verb /ˈslɪðər/

slither

滑る
Meaning
to move smoothly over a surface with a twisting, sliding motion, like a snake
Example
The snake slithered through the grass.
ヘビは草の中を滑って進んだ。
C1 noun /ˈstætʃər/

stature

名声、身長
Meaning
A person's natural height or their reputation and importance.
Example
Her intellectual stature made her a respected figure in academia.
彼女の知的名声は、彼女を学界で尊敬される人物にしました。
C1 noun /ˈsiːskeɪp/

seascape

海の景色
Meaning
A view or painting of the sea.
Example
The artist painted a beautiful seascape at sunset.
アーティストは夕日で美しい海の景色を描きました。
C1 adjective /səˈriːn/

serene

静かで平和な
Meaning
Calm, peaceful, and untroubled; tranquil.
Example
The lake had a serene and peaceful atmosphere.
湖は静かで平和な雰囲気を持っていました。
C1 noun /ˌsɛnsəˈbɪləti/

Sensibility

感受性
Meaning
the ability to appreciate and respond to complex emotional or aesthetic influences; sensitivity
Example
Her artistic sensibility made her appreciate fine details in paintings.
彼女の芸術的な感受性は、絵画の細部を評価するのに役立ちました。
C1 adjective /ˈskænti/

Scanty

小さいサイズまたは量; 不十分; ほとんど十分
Meaning
small in size or amount; insufficient; barely adequate
Example
The refugee camp had scanty food supplies.
難民キャンプにはわずかな食料供給がありました。
C1 noun ˈstræt.ə.sfɪər

stratosphere

成層圏
Meaning
The layer of the earth's atmosphere above the troposphere, extending to about 50 km above the earth's surface.
Example
The stratosphere provides a unique environment.
成層圏は特別な環境を提供します。
C1 noun /ˈsteɪ.ʃən.ər/

Stationer

文房具店
Meaning
a person who sells paper, pens, pencils, and other office supplies
Example
The stationer recommended the best pens for writing exams.
文房具屋は試験のための最適なペンを推薦しました。
C1 adjective /ˈsliːzi/

sleazy

不道徳な、汚い、または低品質な
Meaning
morally low, dirty, or cheap in quality
Example
He avoided the sleazy nightclub downtown.
彼はダウンタウンのスリージーなナイトクラブを避けた。
C1 noun ˈsæŋktɪti

sanctity

神聖さ
Meaning
The state or quality of being holy, sacred, or saintly; ultimate importance.
Example
The sanctity of life should never be compromised.
命の神聖さは決して妥協されるべきではない。
C1 adjective /ˈskwiːmɪʃ/

squeamish

簡単に気分が悪くなったり、吐き気を催したり、嫌悪感を抱いたりする
Meaning
easily made to feel sick, faint, or disgusted
Example
She felt squeamish at the sight of blood.
彼女は血を見て気分が悪くなった。
C1 noun /ˈstɪmjʊlənt/

stimulant

興奮剤
Meaning
A substance that raises levels of physiological or nervous activity in the body.
Example
Coffee is a common stimulant that helps people stay awake.
コーヒーは一般的な興奮剤で、人々が目を覚ますのを助けます
C1 verb ˈsɪn.ɚ.dʒaɪz

synergize

効率を高めるために協力する。
Meaning
combine in such a way as to enhance effectiveness.
Example
The departments must synergize to improve efficiency.
部門は効率を向上させるためにシナージズしなければならない。
C1 noun/verb /snɛər/

snare

罠
Meaning
a trap for catching animals; to catch or trap
Example
The hunter set a snare to catch rabbits.
ハンターはウサギを捕まえるために罠を仕掛けました。
C1 adjective /ˈsɪn.tɪ.leɪ.tɪŋ/

scintillating

きらめく
Meaning
brilliantly clever, exciting, or sparkling
Example
Her scintillating conversation kept everyone entertained.
彼女のきらめく会話は皆を楽しませた。
C1 verb /ˈsɪnɚdʒaɪzd/

synergized

シナジー効果が得られるようにする, 力を合わせる, 協力する
Meaning
Combine in such a way that the total effect is greater than the sum of the individual effects.
Example
The teams were synergized to maximize productivity.
チームは生産性を最大化するために協力しました。
C1 adjective /səbˈsɪd.i.ər.i/

Subsidiary

子会社の; 二次的な; 子会社に関連する
Meaning
less important than the main thing; secondary; of or relating to a subsidiary company
Example
The subsidiary company handles all overseas operations.
子会社はすべての海外業務を管理しています。
C1 noun /ˌsɛlfsəˈfɪʃənsi/

Self-sufficiency

自給自足
Meaning
the ability to supply one's own needs without external assistance; independence
Example
The farm achieved complete self-sufficiency in food production.
その農場は食品生産において完全な自給自足を達成しました。
C1 /skwɒt/

squat

しゃがむ
Meaning
to crouch or sit with knees bent and body close to the ground
Example
He squatted down to tie his shoes.
彼は靴を結ぶためにしゃがんだ。
C1 verb /ʃraʊd/

shroud

覆う
Meaning
to cover or hide; to wrap in cloth
Example
The mountain peak was shrouded in mist.
山頂は霧に包まれていました。
C1 verb /ˈskwɒbəl/

squabble

些細なことで口論する
Meaning
To argue noisily over something small or unimportant.
Example
The children squabbled over the last piece of cake.
子供たちはケーキの最後の一切れを巡って争っていました。
C1 adjective /smʌɡ/

smug

自惚れた
Meaning
having or showing an excessive pride in oneself or one's achievements
Example
He wore a smug smile after winning the debate.
彼は議論に勝った後、自惚れた笑顔を見せた。
C1 noun /skraɪb/

scribe

書記
Meaning
a person who writes documents, especially in ancient times; a professional copyist
Example
In ancient Egypt, scribes recorded important events.
古代エジプトでは、スクライブは重要な出来事を記録しました。
C1 verb /slɪŋk/

slink

忍び寄る
Meaning
to move quietly and secretly, often to avoid being noticed
Example
The cat slunk into the room without making a sound.
その猫は音を立てずに部屋に忍び込んだ。
C1 adjective /ˌsʌb.təˈreɪ.ni.ən/

subterranean

地下
Meaning
Existing, occurring, or done under the earth's surface.
Example
Subterranean water sources help sustain agriculture.
地下の水源は農業の維持に役立ちます。
C1 verb /splaɪs/

splice

接続する
Meaning
to join two pieces of rope, film, or other material by weaving or attaching them together
Example
The technician spliced the two wires to restore the connection.
技術者は2本のワイヤーを接続して接続を回復しました。
C1 noun /ˈsɜːr.vɪ.tuːd/

Servitude

奴隷状態
Meaning
the state of being a slave or completely subject to someone more powerful
Example
Many people fought to escape the servitude imposed by the colonial system.
多くの人々が、植民地制度によって課せられた隷属から逃れようと戦った。
C1 verb/noun /snɑːrl/

snarl

唸り声、渋滞
Meaning
to growl aggressively with bared teeth; a tangle or mess
Example
The dog snarled at the stranger near the gate.
犬はゲート近くの見知らぬ人に唸った。
C1 verb/noun /ˈswæɡ.ər/

swagger

自信過剰
Meaning
To walk or behave in a very confident and arrogant way.
Example
He swaggered into the room as if he owned the place.
彼はまるでその場所のオーナーであるかのように部屋に入ってきました。
C1 noun stɔːrm ɪnˌtensɪfɪˈkeɪʃən

storm intensification

嵐の強化
Meaning
The process by which storms become stronger and more severe in intensity.
Example
Storm intensification is linked to climate change.
嵐の強化は気候変動に関連しています。
C1 noun ˈsɪn.tæks

syntax

構文
Meaning
The arrangement of words and phrases to create well-formed sentences in a language.
Example
Programming languages follow strict syntax rules.
プログラミング言語は厳格な構文ルールに従います。
C1 noun /sɪˈkriː.ʃən/

Secretion

分泌
Meaning
a process by which substances are produced and discharged from a cell or gland
Example
Insulin secretion is crucial for blood sugar regulation.
インスリン分泌は血糖値の調整に不可欠です。
C1 adjective /ˈseɪlaɪn/

Saline

塩水の; 塩分のある
Meaning
containing salt; salty; relating to salt water
Example
The saline solution is used for medical treatments.
塩水溶液は医療処置に使用されます。
C1 noun /ˈskruːpəl/

scruple

良心の呵責
Meaning
A moral or ethical consideration that restrains actions.
Example
He had no scruples about lying to get ahead.
彼は前進するために嘘をつくことに対して良心の呵責を感じていなかった。
C1 noun /ˈsʌtlti/

subtlety

微妙
Meaning
The quality or state of being subtle.
Example
She understood the subtlety of the situation.
彼女は状況の微妙さを理解しました。
C1 noun səbˈsɪs.təns

subsistence

生計
Meaning
The action or fact of maintaining or supporting oneself at a minimum level.
Example
Many farmers depend on subsistence agriculture.
多くの農民は自給農業に依存しています。
C1 noun/verb /smʌdʒ/

smudge

汚れ, スマッジ
Meaning
a dirty mark or smear; to make something dirty or unclear by rubbing or touching
Example
She accidentally smudged her lipstick on the napkin.
彼女はうっかりナプキンにリップスティックをつけてしまった。
C1 adjective /spɑːrs/

sparse

まばら
Meaning
thinly scattered or distributed; not dense or abundant
Example
Vegetation was sparse in the desert.
砂漠では植生がまばらだった。
C1 adjective /ˈstɪltɪd/

stilted

不自然な、堅苦しい
Meaning
Speech or writing that is stiff, unnatural, or overly formal.
Example
His speech sounded stilted and rehearsed.
彼のスピーチは不自然で練習されたように聞こえた。
C1 verb /ˈsɪmjʊˌleɪt/

simulate

シミュレート
Meaning
to imitate the appearance, character, or behavior of something; to pretend or reproduce conditions artificially
Example
The pilot had to simulate an emergency landing during training.
パイロットは訓練中に緊急着陸をシミュレートしなければならなかった。
C1 noun /streɪt/

strait

海峡
Meaning
A narrow passage of water connecting two seas or two large areas of water.
Example
The Strait of Gibraltar connects the Atlantic Ocean and the Mediterranean Sea.
ジブラルタル海峡は大西洋と地中海を繋いでいます。
C1 adjective /ʃruːd/

Shrewd

賢い; 鋭い; 分別のある
Meaning
having or showing sharp powers of judgment; astute
Example
The shrewd businessman made a profitable deal in the competitive market.
その賢いビジネスマンは、競争の激しい市場で利益を上げる取引をしました。
C1 noun /ˈsɔː.dʌst/

sawdust

木屑
Meaning
The tiny particles of wood produced by sawing or sanding.
Example
The floor was covered with sawdust from the carpentry work.
床は大工仕事からの木屑で覆われていました。
C1 adjective /ʃrɪl/

shrill

鋭い音
Meaning
High-pitched and piercing in sound.
Example
The shrill whistle startled everyone in the room.
鋭い口笛の音が部屋の中の全員を驚かせた。
C1 adjective /ˈsɒmbər/

somber

陰気
Meaning
Dark or dull in color or tone; gloomy or serious.
Example
The funeral had a somber atmosphere.
葬式には暗い雰囲気がありました。
C1 noun ˌskeɪ.ləˈbɪl.ə.ti

scalability

拡張性
Meaning
The capacity to be changed in size or scale; the ability of a system to handle a growing amount of work.
Example
The new software offers high scalability for large enterprises.
新しいソフトウェアは大企業向けに高い拡張性を提供します。
C1 noun /səˈlɪləkwi/

soliloquy

独白
Meaning
a speech in which a character talks to themselves, often used in drama to reveal inner thoughts
Example
Hamlet's soliloquy is one of the most famous passages in Shakespearean drama.
ハムレットの独白はシェイクスピアのドラマの中で最も有名なパッセージの一つです。
C1 verb /spɜːrn/

spurn

軽蔑して拒絶する
Meaning
To reject something or someone with disdain or contempt.
Example
She spurned his offer of help.
彼女は軽蔑の気持ちで彼の助けの申し出を拒絶した。
C1 adjective /ˈstrɛnjuəs/

strenuous

厳しい
Meaning
Requiring or using great effort and energy.
Example
Climbing the mountain was a strenuous task.
山登りは厳しい仕事だった。
C1 noun /səbˈmɪtəl/

submittal

提出
Meaning
the act of submitting something, especially a document for consideration or approval
Example
The contractor sent the submittal to the client for approval.
請負業者は承認のために提出物を顧客に送信しました。
C1 noun /stɛntʃ/

stench

悪臭
Meaning
A very strong and unpleasant smell.
Example
The stench of garbage filled the alley.
ゴミの臭いが路地を満たした。
C1 noun /ʃæk/

Shack

小屋
Meaning
a small, crudely built dwelling; a poorly constructed building
Example
The fisherman lived in a small shack near the beach.
漁師は海岸近くの小さな小屋に住んでいました。
C1 noun, verb /səˈpiːnə/

subpoena

召喚状
Meaning
a legal document ordering someone to attend court; to summon someone with such a document
Example
The witness received a subpoena to appear in court next week.
証人は来週法廷に出廷するための召喚状を受け取った。
C1 noun /ˈʃɜːrbət/

sherbet

シャーベット
Meaning
a sweet flavored drink or a frozen dessert made from sweetened fruit juice
Example
On hot days, she enjoys a glass of lemon sherbet.
暑い日には、彼女はレモンシャーベットを一杯楽しんでいます。
C1 noun ˈsɪnədʒi

synergy

相乗効果, 協力
Meaning
The interaction or cooperation of two or more organizations, substances, or other agents to produce a combined effect greater than the sum of their separate effects.
Example
The synergy between the two companies led to a successful partnership.
二つの会社間の相乗効果により、成功したパートナーシップが生まれました。
C1 adjective /skænt/

Scant

わずかな
Meaning
barely sufficient; inadequate; small in amount
Example
There was scant evidence to support his claim.
彼の主張を支持する証拠はほとんどなかった。
C1 adjective /stjuːˈpɛndəs/

stupendous

素晴らしい
Meaning
extremely impressive; amazing in size, degree, or excellence
Example
The magician’s performance was simply stupendous.
マジシャンのパフォーマンスはまさに素晴らしいものでした。
C1 adjective /ˈstoʊɪk/

stoic

冷静な, 無感情な
Meaning
Showing little or no emotion, even in difficult situations.
Example
She remained stoic during the crisis, never showing fear or panic.
彼女は危機の間、冷静で恐怖やパニックを示さなかった。
C1 verb /struː/

strew

まき散らす
Meaning
to scatter or spread things untidily over a surface or area
Example
Clothes were strewn across the floor.
服が床に散らばっていた。
C1 noun /səˈlɪn.ə.t̬i/

salinity

塩分, 塩濃度
Meaning
The salt content of soil or water, typically measured as a concentration.
Example
The salinity of the ocean varies depending on depth and location.
海洋の塩分は深さと場所によって異なります。
C1 adjective ˈsɒvrɪn

sovereign

主権の, 最高の
Meaning
Possessing supreme or ultimate power; independent.
Example
The sovereign government has control over its currency.
主権政府は自国の通貨を管理している。
C1 noun /ˈskaɪ.lɑːrk/

Sky-Lark

ヒバリ
Meaning
a small brown bird known for singing while flying high in the sky
Example
The skylark sang beautifully as it soared above the meadow.
ヒバリは草地の上を飛びながら美しく歌った。
C1 noun /sɪlt/

silt

シルト
Meaning
Fine sand, clay, or other material carried by running water and deposited as a sediment.
Example
The river deposited layers of silt along its banks.
川はその岸にシルトの層を堆積させた。
C1 noun /swiːt.laɪm/

Sweetlime

スイートライム
Meaning
a citrus fruit that is sweeter and less acidic than regular lime
Example
The sweetlime juice was refreshing on a hot day.
スイートライムジュースは暑い日にさわやかでした。
C1 noun /suˈpriː.mə.si/

Supremacy

至高性; 最高の権威または力
Meaning
the state of being supreme; highest authority or power
Example
The country established naval supremacy in the region.
その国は地域で海軍の至高性を確立しました。
C1 verb ˈsɪn.θə.saɪ.zɪŋ

synthesizing

合成する, 組み合わせる, 論理的に提示する
Meaning
Combine (a number of things) into a coherent whole.
Example
He excels in synthesizing ideas from different sources.
彼は異なるソースからアイデアを合成するのが得意です。
C1 noun /sɪv/

sieve

ふるい
Meaning
a utensil with a mesh or perforated bottom, used for straining or sifting
Example
She used a sieve to strain the pasta.
彼女はパスタをこすためにふるいを使いました。
C1 adjective /ˈsɔːrdɪd/

sordid

卑劣な
Meaning
involving immoral or dishonorable actions; dirty or unpleasant
Example
The newspaper exposed the politician's sordid past.
新聞は政治家の卑劣な過去を暴露した。
C1 noun /slæɡ/

slag

鉱滓
Meaning
Stony waste matter separated from metals during the smelting process.
Example
The factory dumped the slag near the river.
工場は川の近くに鉱滓を捨てました。
C1 verb /ˈsmʌðər/

smother

窒息させる / 覆う
Meaning
to kill someone by covering their nose and mouth to prevent breathing; to cover something completely; to overwhelm with excessive attention or affection
Example
She smothered the fire with a blanket.
彼女は毛布で火を覆った。
C1 noun /spɛk/

speck

しみ
Meaning
A very small spot, mark, or particle.
Example
There was a tiny speck of dust on the glass table.
ガラスのテーブルに小さなほこりのしみがあった。
C1 noun /ʃruː/

shrew

怒りっぽい女性 / 小さなネズミのような動物
Meaning
a small mouse-like animal; also a woman with a bad temper
Example
The play describes a strong-willed woman as a shrew.
この劇は強い意志を持った女性を怒りっぽい女性として描いています。
C1 verb /sʌlk/

sulk

むくれる
Meaning
to be silent and bad-tempered because you are angry or disappointed
Example
She sulked in her room after the argument.
議論の後、彼女は自分の部屋でむくれていた。
C1 adjective /ˌsɛlf əbˈzɔːrbd/

self-absorbed

自己中心的
Meaning
Excessively preoccupied with oneself and one’s own thoughts, feelings, or interests.
Example
He was too self-absorbed to notice his friend's distress.
彼は友達の苦しみに気づかないほど自己中心的だった。
C1 verb /səbˈdjuː/

subdue

Meaning
To bring under control, especially by force; to overcome or quiet.
Example
The army was able to subdue the rebellion quickly.
C1 adjective /ˈswoʊlən/

swollen

腫れた
Meaning
Enlarged or puffed up, usually due to injury, inflammation, or fluid accumulation
Example
Her ankle was swollen after she twisted it during the hike.
ハイキング中に足首をひねった後、足首が腫れていました。
C1 noun /ˈʃʊɡ.ər ˈkæn.di/

Sugar candy

シュガーキャンディ
Meaning
crystallized sugar formed into small pieces; rock candy made from sugar syrup
Example
The children enjoyed eating colorful sugar candy at the festival.
子供たちは祭りでカラフルなシュガーキャンディを食べて楽しみました。
C1 verb /ˈstriːmlaɪnɪŋ/

streamlining

簡素化
Meaning
The process of making an organization or system more efficient by simplifying or eliminating unnecessary steps
Example
Streamlining processes can significantly reduce operational costs.
プロセスの簡素化は、運用コストを大幅に削減することができます。
C1 noun /ˈstɒpɪdʒ/

stoppage

停止; 中断
Meaning
The act of stopping or ceasing; a halt in operation or activity
Example
The sudden stoppage of the train caused delays for all passengers.
電車の突然の停止で、すべての乗客に遅れが生じた。
C1 noun ˈsɒv.rɪn.ti

sovereignty

主権
Meaning
The authority of a state to govern itself or another state; supreme power or authority.
Example
Sovereignty is essential for a nation's identity.
主権は国家のアイデンティティにとって不可欠です。
C1 noun, verb /ˈskʌf.əl/

scuffle

乱闘
Meaning
a short, confused fight or struggle; to engage in such a fight
Example
Two players scuffled on the field after the foul.
ファウルの後、二人の選手がフィールドで殴り合った。
C1 noun /stɪˈlɛtoʊ/

stiletto

細いヒールの靴 / ダガー
Meaning
A small, thin, high-heeled shoe or a dagger with a slender blade.
Example
She wore elegant stiletto heels to the party.
彼女はパーティーにエレガントなスティレットヒールを履いて行きました。
C1 noun /ˌsəʊ.ʃi.əʊˈek.ə.nɒm.ɪk ˈprɒɡ.res/

socioeconomic progress

社会経済的進歩
Meaning
Advancement in both social and economic conditions of a society or community.
Example
Socioeconomic progress uplifts marginalized communities.
社会経済的進歩は、疎外されたコミュニティを引き上げます。