saturation
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C1 noun ˌsætʃəˈreɪʃən

saturation

飽和
Meaning
The state of being saturated; the degree or extent to which something is dissolved or absorbed
Example
The saturation of the market with similar products reduced sales.
市場に同様の商品が溢れすぎて、販売が減少しました。
B1 noun /ˈspiːʃiːz/

Species

種; タイプ
Meaning
a group of living organisms that can reproduce with each other; a type or kind
Example
The Amazon rainforest is home to thousands of animal species.
アマゾンの熱帯雨林は何千もの動物種の家です。
A2 noun /ˈsteɪʃən/

station

Meaning
a place where a particular service is provided, especially for transportation
Example
We arrived at the station just in time for the train.
B2 adjective /ˈʃeɪm.fəl/

Shameful

恥ずかしい; 不名誉な; 恥ずかしい
Meaning
causing shame; disgraceful; embarrassing
Example
His shameful behavior embarrassed the entire family.
彼の恥ずかしい行動は家族全員を困惑させました。
C2 noun ˌsʌb.dʒʊˈɡeɪ.ʃən

subjugation

支配または征服
Meaning
The action of bringing someone or something under domination or control, especially by force.
Example
The subjugation of weaker nations by colonial powers shaped history.
植民地の強国による弱小国の支配は歴史を形作った。
B2 verb /saɪ/

sigh

ため息をつく
Meaning
to let out a long, deep breath as an expression of tiredness, relief, or sadness
Example
She sighed with relief when she heard the good news.
良いニュースを聞いたとき、彼女は安心してため息をついた。
C1 adjective /snaɪd/

snide

皮肉な
Meaning
mocking or insulting in an indirect way
Example
He couldn’t resist making a snide comment about her dress.
彼は彼女のドレスについて皮肉なコメントをするのをやめられなかった。
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 verb /ˈsmoʊldər/

smolder

ゆっくり燃える
Meaning
to burn slowly with smoke but no flame; to show suppressed anger or emotion
Example
The fire smoldered for hours before it went out.
火は何時間もゆっくり燃えた後に消えました。
B1 noun /ˈsʌb.ɜːb/

Suburb

郊外
Meaning
a residential area outside the central part of a city; an outlying district of a city
Example
They moved to a quiet suburb to raise their children away from city noise.
彼らは子供たちを都市の騒音から遠ざけるために静かな郊外に引っ越しました。
C2 adjective /ˌsuːpərˈnuːmərɛri/

supernumerary

余分な
Meaning
Exceeding the usual number; extra or unnecessary.
Example
The play included several supernumerary actors to fill the background scenes.
その劇は背景のシーンを埋めるためにいくつかの余分な俳優を含んでいました。
C1 noun /ˈstæl.i.ən/

stallion

繁殖用の牡馬
Meaning
An adult male horse that is not castrated, often used for breeding.
Example
The farm owns a powerful stallion for breeding purposes.
その農場は繁殖用の強力なスタリオンを所有しています。
B1 verb/adjective /sɪˈkjʊər/

secure

安全にする
Meaning
to make safe or protect; to fix something firmly in place
Example
Please secure the door before you leave.
ドアを確実に閉めてください。
B2 noun /səˈlɪsɪtər/

solicitor

弁護士
Meaning
A type of lawyer who gives legal advice and prepares legal documents, often representing clients in lower courts.
Example
She consulted a solicitor before signing the contract.
彼女は契約書に署名する前に弁護士に相談しました。
C1 adjective /səbˈvɜːrsɪv/

subversive

破壊的
Meaning
seeking or intended to undermine or overthrow an established system or authority
Example
The group was banned for its subversive activities.
そのグループは破壊的な活動のために禁止された。
C2 noun /səbˈdʌk.ʃən/

subduction

地殻の一層が別の層の下に移動すること。
Meaning
The lateral and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
Example
The Pacific Ring of Fire is an area of intense subduction.
太平洋の火の輪は激しいサブダクションの領域です。
C1 noun /səˈsteɪnəbl ˈæɡrɪkʌltʃər/

sustainable agriculture

持続可能な農業
Meaning
Farming practices that meet current food needs while preserving environmental resources and maintaining the ability to produce food for future generations through ecologically sound methods.
Example
Sustainable agriculture practices protect the environment while ensuring food security.
持続可能な農業の実践は、環境を保護しながら食料安全保障を確保します。
C2 adjective /ˌsɪkəˈfæntɪk/

sycophantic

お世辞
Meaning
Behaving in a way that is excessively obedient or servile to gain favor.
Example
His sycophantic behavior annoyed his colleagues.
彼のお世辞な振る舞いは同僚をうんざりさせた。
A2 adjective /ˈsaɪ.lənt/

Silent

静かな; 無音の; 騒がない
Meaning
making no sound; quiet; not speaking
Example
The library was completely silent during study hours.
図書館は学習時間中は完全に静かでした。
C2 adjective, noun /səbˈmɜːrsəbl/

submersible

潜水艇
Meaning
capable of being submerged; a small underwater craft
Example
The scientists explored the deep ocean using a submersible.
科学者たちは潜水艇を使って深海を探査した。
C1 noun /ˈstɪm.jʊ.laɪ/

stimuli

刺激
Meaning
Things that create reactions or provide motivation.
Example
Bright light and loud sounds are common stimuli for alertness.
明るい光と大きな音は、警戒のための一般的な刺激です。
C2 noun /ˈsaɪ.ə.lɪz.əm/

sciolism

表面的な知識の誇示
Meaning
pretentious show of superficial knowledge
Example
His speech was full of sciolism, impressing no one.
彼のスピーチはサイオリズムで満ちており、誰も感動しなかった。
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。
B2 adjective /slæk/

slack

緩い
Meaning
not tight, firm, or busy; lacking tension or activity
Example
Business is slack during the rainy season.
雨季の間、ビジネスは鈍くなる。
C2 noun/verb /ˈsʌkər/

succor

援助
Meaning
Assistance and support in times of hardship or distress.
Example
The charity provided succor to the flood victims.
慈善団体は洪水の被害者に援助を提供しました。
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。
B2 noun ˈsuː.pər.fuːdz

superfoods

スーパーフード
Meaning
Nutrient-dense foods that are particularly beneficial for health and well-being.
Example
Blueberries and spinach are superfoods rich in vitamins.
ブルーベリーとほうれん草はビタミン豊富なスーパーフードです。
B2 noun /ˈsikwəl/

Sequel

続編
Meaning
a published, broadcast, or recorded work that continues the story or develops the theme of an earlier one; something that takes place after or as a result of an earlier event
Example
The movie sequel was even more successful than the original.
映画の続編はオリジナルよりもさらに成功しました。
C2 noun /ˈsteɪtkraft/

statecraft

国政術
Meaning
The art of governing and managing state affairs effectively.
Example
The leader was praised for his exceptional statecraft in handling international relations.
リーダーは国際関係を扱う際の卓越した国政術に対して称賛されました。
B2 verb /ˈstɑːrtl/

startle

驚かせる
Meaning
To surprise or frighten someone suddenly.
Example
The loud noise startled the children.
大きな音が子供たちを驚かせた。
C2 noun /sfɛˈrɪsɪti/

sphericity

球形
Meaning
The quality or state of being spherical; roundness.
Example
The sphericity of the ball made it roll smoothly on the ground.
ボールの球形は、地面でスムーズに転がるのを可能にしました。
A1 adjective /seɪm/

same

同じ
Meaning
identical; not different or changed
Example
We wore the same dress at the party.
私たちはパーティーで同じドレスを着ていました。
C2 noun /ˈsteɪsɪs/ or /ˈstæsɪs/

stasis

停滞
Meaning
A state of inactivity or equilibrium; a situation where nothing changes.
Example
The negotiations reached a state of stasis with no progress made.
交渉は停滞状態に達し、進展はありませんでした。
B2 adjective /ˌsen.tɪˈmen.təl/

Sentimental

感傷的な
Meaning
having tender feelings; being emotional about memories or experiences
Example
She became sentimental when looking at old family photographs.
彼女は昔の家族写真を見て感傷的になった。
A2 noun/verb /sɛns/

sense

センス
Meaning
A faculty by which the body perceives external stimuli; or to perceive something without being told.
Example
She had a strong sense of responsibility.
彼女は責任感が強かった。
B2 noun /ˌsɛlf əˈwɛə.nəs/

self-awareness

自己認識
Meaning
Conscious knowledge of one's own character, feelings, motives, and desires.
Example
Self-awareness helps in understanding one's emotions and actions.
自己認識は、自己の感情や行動を理解するのに役立ちます。
B2 noun /ˈsɪɡ.nə.tʃər/

Signature

署名
Meaning
a person's name written in their own handwriting as identification or authorization
Example
Please put your signature at the bottom of the document.
ドキュメントの下部に署名をしてください。
C1 adjective /ˈsʌmp.tʃu.əs/

sumptuous

豪華な
Meaning
Splendid and expensive-looking; luxurious.
Example
The guests were treated to a sumptuous banquet.
ゲストは豪華な晩餐にもてなされました。
B2 noun /soʊl/

Sole

足の裏; 靴の底
Meaning
the bottom part of the foot; the bottom part of a shoe
Example
I have a blister on the sole of my foot.
私の足の裏に水ぶくれがあります。
C2 noun /skæd/

scad

スカッド魚
Meaning
A type of fish of the jack family; also informally means a large number or quantity.
Example
The fisherman caught a scad in the net.
漁師は網でスカッドを捕まえました。
B2 noun /sɪv/

Seive

ふるい
Meaning
a utensil consisting of a wire or plastic mesh held in a frame, used for straining solids from liquids
Example
She used a sieve to separate the flour from lumps.
彼女はふるいを使って小麦粉をダマから分けました。
C1 noun /ˈsɛdətɪv/

sedative

鎮静剤
Meaning
A substance that calms the nerves or induces sleep.
Example
The doctor prescribed a sedative to help the patient sleep.
医者は患者が眠れるように鎮静剤を処方しました。
B2 adjective /ˈstɪki/

sticky

べたつく
Meaning
having the quality of adhering or clinging; difficult to remove or deal with
Example
The candy is too sticky to eat with your hands.
キャンディは手で食べるにはあまりにもべたつくです。
B2 noun /swɪŋ/

Swing

ブランコ
Meaning
move or cause to move back and forth or from side to side while suspended or on an axis
Example
The children love to swing in the park.
子供たちは公園でブランコをするのが好きです。
B2 adjective /ˌsuː.pəˈfɪʃ.əl/

superficial

表面的
Meaning
Existing or occurring at or on the surface; not thorough or deep.
Example
His understanding of the subject was rather superficial.
彼のそのテーマに対する理解はかなり表面的でした。
B1 noun ˈseʃən

session

セッション
Meaning
A meeting of an official body, especially a legislature, council, or court of law, to conduct its business.
Example
The session was held on February 25.
セッションは2月25日に開催されました。
C1 verb, noun /sæp/

sap

樹液 / 弱める
Meaning
As a noun: the vital fluid in plants; As a verb: to gradually weaken or drain strength.
Example
The long journey began to sap his energy.
長い旅が彼のエネルギーを弱め始めた。
B2 noun /ˈsɪr.i.əs.nəs/

Seriousness

真剣さ; 重要性
Meaning
the quality of being serious; gravity; importance
Example
The seriousness of the situation became clear when the doctor spoke.
その状況の真剣さは、医者が話すときに明らかになりました。
C1 noun /ˈstaɪpend/

Stipend

奨学金
Meaning
a fixed regular sum paid as a salary or allowance
Example
The research student receives a monthly stipend for living expenses.
研究学生は生活費のために毎月奨学金を受け取ります。
C2 adjective /ˌsuːpərˈæn.ju.eɪ.tɪd/

superannuated

時代遅れの
Meaning
old and no longer useful or valid; retired due to age
Example
The factory was filled with superannuated machines that slowed production.
工場には生産を遅くする時代遅れの機械が満載でした。
B2 noun /stəˈtɪstɪks/

statistics

統計
Meaning
the practice or science of collecting and analyzing numerical data
Example
The statistics showed an increase in the number of users last year.
統計は昨年のユーザー数の増加を示しました。
B2 adjective /ˈspiːtʃləs/

speechless

言葉を失う
Meaning
Unable to speak because of shock, surprise, or strong emotion.
Example
She was speechless when she received the award.
彼女は賞を受け取ったとき、言葉を失いました。
B2 noun /ˈsɜːvɪŋ/

serving

ポーション
Meaning
a portion of food for one person; the act of giving food or drink to someone
Example
He ate a large serving of rice and curry.
彼は大きなポーションのご飯とカレーを食べました。
C2 adjective /ˈsɪlvən/

sylvan

森林の
Meaning
Relating to or characteristic of the woods or forest.
Example
The cottage was set in a sylvan landscape full of tall trees.
その小屋は、高い木々に囲まれた森林の風景の中にありました。
C2 noun /ˈseɪnjər/

seignior

封建領主
Meaning
A feudal lord; a man of authority in medieval Europe.
Example
The seignior demanded taxes from the peasants.
封建領主は農民から税金を要求した。
C1 adjective /ˈspjʊəriəs/

spurious

偽の / 虚偽の
Meaning
Not genuine, authentic, or true; false or fake.
Example
The report was based on spurious claims.
その報告書は偽の主張に基づいていた。
C2 adjective /ˈsɪbɪlənt/

sibilant

シーシー音がする
Meaning
Making or characterized by a hissing sound.
Example
The word 'snake' starts with a sibilant sound.
'snake' という単語はシビラント音で始まります。
C1 adjective /ˈstrætɪfaɪd/

stratified

Meaning
arranged or classified in layers or strata
Example
Society in the past was highly stratified based on class and wealth.
C1 adjective ˌsɪmbɪˈɒtɪk

symbiotic

共生的な
Meaning
Involving interaction between two different organisms living in close physical association.
Example
The relationship between the bee and the flower is symbiotic.
ミツバチと花の関係は共生的です。
C2 noun /ˈstrætədʒəm/

stratagem

策略
Meaning
a plan or scheme designed to achieve a particular goal, often by trickery
Example
The general devised a clever stratagem to outwit the enemy.
将軍は敵を欺くために巧妙な策略を考案しました。
B2 noun /stɑːˈveɪ.ʃən/

Starvation

飢餓
Meaning
suffering or death caused by lack of food; extreme hunger
Example
Many people died of starvation during the famine.
多くの人々は飢饉の間に飢え死にしました。
B1 noun /seɪlz/

sales

Meaning
activities related to selling products or services
Example
The company saw a significant increase in sales during the holiday season.
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。
A2 adjective /ˈsɪr.i.əs/

Serious

真剣; 真面目; 重要;
Meaning
thoughtful; grave; requiring careful consideration; not joking
Example
This is a serious matter that needs immediate attention.
これは即座に注意が必要な真剣な問題です。
C1 adjective /səkˈsɪŋkt/

succinct

簡潔
Meaning
Briefly and clearly expressed; characterized by clear, precise expression in few words.
Example
His speech was succinct and impactful.
彼のスピーチは簡潔で印象的でした。
C2 verb /ˈstɪp.əl/

stipple

小さな点で覆う
Meaning
to cover a surface with numerous small dots or specks, often in drawing or painting
Example
The artist stippled the canvas to create a textured effect.
アーティストはキャンバスに小さな点をつけて、テクスチャ効果を作り出しました。
C1 verb /ˈstɪntɪŋ/

stinting

けちけちと与える
Meaning
to supply sparingly or with restrictions
Example
He never stinting his efforts to help the poor.
彼は貧しい人々を助けるために決して手を抜きません。
B2 noun /ˈswɒl.oʊ/

Swallow

ツバメ
Meaning
a small migratory bird with long wings and a forked tail
Example
The swallow built its nest under the roof.
ツバメは屋根の下に巣を作りました。
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。
C2 noun /sɒmˈnæmbjʊlɪst/

somnambulist

夢遊病者
Meaning
A person who sleepwalks.
Example
The somnambulist wandered out of the house at night.
夢遊病者は夜に家を出た。
A2 noun /ˈsɪk.nəs/

Sickness

病気; 疾患
Meaning
the state of being ill; a disease or illness
Example
She took time off work due to sickness.
彼女は病気のため仕事を休みました。
C2 noun /ˈʃɑːdənfrɔɪdə/

schadenfreude

他人の不幸を喜ぶこと
Meaning
pleasure derived from another person's misfortune
Example
He felt a sense of schadenfreude when his rival failed.
ライバルが失敗したとき、彼はシャーデンフロイデを感じた。
A2 noun /ˈsɒkər/

soccer

サッカー
Meaning
a sport in which two teams of eleven players each try to score goals by kicking a ball into the opposing goal
Example
He loves to play soccer with his friends.
彼は友達とサッカーをするのが好きです。
C2 noun /ˈsɛrəf/

seraph

セラフィム
Meaning
An angelic being associated with light and purity, often depicted as a high-ranking angel in Christian theology.
Example
The stained-glass window depicted a seraph with outstretched wings.
ステンドグラスの窓には、翼を広げたセラフィムが描かれていました。
B2 noun /ˈspɒnsəʃɪp/

sponsorship

後援
Meaning
the act of supporting an event, activity, person, or organization financially or through other resources
Example
The event was made possible due to the sponsorship of several big companies.
イベントは、いくつかの大企業の後援のおかげで実現しました。
B2 verb, noun /ʃeɪv/

shave

髭を剃る
Meaning
To remove hair from the body, typically using a razor; the act of removing hair
Example
He likes to shave every morning before work.
彼は毎朝仕事の前に髭を剃るのが好きです。
C1 adjective səˈsaɪ.ə.təl

societal

社会的
Meaning
Relating to society or social relationships.
Example
Societal benefits of space tourism are under debate.
宇宙観光の社会的利点が議論されています。
A2 adjective /ˈskeəri/

scary

怖い
Meaning
causing fear or making you feel frightened
Example
That horror movie was really scary.
そのホラー映画は本当に怖かった。
B1 noun /səˈdʒes.tʃən/

Suggestion

提案; アドバイス
Meaning
an idea or plan put forward for consideration; advice or recommendation
Example
Do you have any suggestions for improving our team's productivity?
チームの生産性向上のための提案はありますか？
A1 noun /ʃɒp/

shop

店
Meaning
a place where goods are sold to customers
Example
I need to go to the shop to buy some groceries.
私は食料品を買うためにショップに行かなければならない。
B2 adjective /stɑːrk/

stark

厳しい、鋭い
Meaning
Severe, sharp, or clearly defined; plain and without any decoration.
Example
The stark contrast between poverty and wealth was evident in the city.
貧困と富の間の鮮明な対比は街中で明らかだった。
C1 verb /skɪmp/

skimp

ケチる
Meaning
to use less of something than is necessary in order to save money or effort
Example
Don’t skimp on quality when buying a new laptop.
新しいノートパソコンを買うときは、品質をケチらないでください。
C1 noun /ˌsæl.jʊˈteɪ.ʃən/

Salutation

挨拶; 善意の表現
Meaning
a greeting; an expression of goodwill
Example
The letter began with a formal salutation.
その手紙は正式な挨拶で始まりました。
C1 noun /stɪnt/

stint

短期の仕事
Meaning
a period of time spent doing a particular job or activity
Example
She did a short stint as a teacher before moving abroad.
彼女は海外に移住する前に短期間の教師として働きました。
A2 adjective /ˈsʌn.i/

Sunny

晴れた; 楽観的な
Meaning
bright with sunlight; cheerful and optimistic
Example
It's a beautiful sunny day perfect for a picnic.
今日は素晴らしい晴れた日で、ピクニックに最適です。
A2 adverb /ˈslaɪtli/

slightly

少し
Meaning
to a small degree or extent
Example
The temperature has slightly increased today.
今日、温度は少し上昇しました。
B2 noun /sɛnt/

scent

香り
Meaning
a distinctive smell, especially a pleasant one
Example
The scent of roses filled the garden.
バラの香りが庭いっぱいに広がった。
B1 noun /səˈpɔːtər/

supporter

サポーター
Meaning
a person who supports someone or something
Example
She is a strong supporter of the local animal shelter.
彼女は地元の動物シェルターの強力なサポーターです。
C1 noun /ˈswiːt.miːt/

Sweetmeat

お菓子
Meaning
a small piece of confectionery or candy; a sweet delicacy
Example
The children enjoyed the traditional sweetmeats during the festival.
子供たちは祭りの間に伝統的なスイートミートを楽しみました。
B2 noun /ˈsliːpər/

sleeper

眠っている人；予想外に成功するもの
Meaning
a person or thing that sleeps; something that unexpectedly succeeds
Example
The movie turned out to be a real sleeper hit.
映画は予想外のヒットになった。
A1 verb /sɪt/

sit

座る
Meaning
to rest in a seated position; to be located
Example
Please sit down and make yourself comfortable.
どうぞ座って快適にしてください。
C2 verb /ˈsʌbdʒʊˌɡeɪt/

subjugate

支配する
Meaning
To bring under domination or control, especially by conquest.
Example
The empire sought to subjugate the neighboring kingdoms.
帝国は隣接する王国を従わせようとした。
C1 noun /ˈsɛpərətɪst/

separatist

分離主義者
Meaning
A person who supports the separation of a group from a larger body, often for political or cultural independence.
Example
The separatist group demanded independence from the central government.
分離主義者グループは中央政府からの独立を要求した。
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。
C2 noun /ˈsælvoʊ/

salvo

一斉射撃
Meaning
A simultaneous discharge of guns or release of bombs; a sudden outburst of cheers or applause.
Example
The soldiers fired a salvo to honor the fallen general.
兵士たちは倒れた将軍を讃えるために一斉射撃を行った。
B2 noun /ˈseɡ.mənt/

Segment

セクション; 部分; セグメント
Meaning
each of the parts into which something is divided; a section or portion
Example
The orange was divided into eight segments.
オレンジは8つのセグメントに分けられました。
C1 noun ˌsʌb.sɪ.dɪˈzeɪ.ʃən

subsidization

助成金
Meaning
Financial assistance provided by government to make certain goods or services more affordable.
Example
Subsidization of agriculture helps farmers maintain crop production.
農業の助成金は、農家が作物の生産を維持するのに役立ちます。
B2 noun /sloʊp/

Slope

坂; 傾斜地
Meaning
an inclined surface; a piece of ground that is not level
Example
We walked up the steep slope of the mountain.
私たちは山の急な坂を登りました。
C1 adjective /skəˈlæstɪk/

scholastic

学問的な
Meaning
Relating to schools, education, or academic learning.
Example
The school organizes scholastic competitions every year.
学校は毎年学問的な競技を開催します。
C2 noun /ˈʃaɪstər/

shyster

詐欺師
Meaning
a person, especially a lawyer, who uses unscrupulous or dishonest methods
Example
The businessman was exposed as a shyster who cheated clients.
そのビジネスマンは、顧客を騙す詐欺師として暴露されました。
C1 adjective /ˈsɜːrvaɪl/ or /ˈsɜːrvəl/

servile

卑屈な
Meaning
having or showing an excessive willingness to serve or please others
Example
His servile attitude annoyed his colleagues.
彼の卑屈な態度は同僚を困らせていました。
C2 noun /ˈʃɪbəˌlɛθ/

shibboleth

特定のグループを識別するための表現や信念
Meaning
A custom, phrase, or belief distinguishing a particular group of people, often used to identify outsiders.
Example
The phrase became a political shibboleth during the campaign.
そのフレーズはキャンペーン中に政治的なシボレスとなった。
B2 verb /swel/

swell

腫れる
Meaning
to become larger, rounder, or thicker; to increase in size
Example
Her ankle began to swell after the injury.
彼女の足首は怪我の後、腫れ始めました。
C2 noun /ˈsɪŋ.krə.ni/

synchrony

シンクロニシティ
Meaning
Coordination in time, harmony in action or movement.
Example
Their dance performance showed perfect synchrony.
彼らのダンスパフォーマンスは完璧なシンクロニシティを示しました。
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。
B1 adjective /ˈspaɪ.si/

Spicy

スパイシー
Meaning
having a strong, hot flavor from spices; containing spices
Example
This curry is too spicy for me to eat.
このカレーは私には辛すぎます。
B2 adverb /ˈsiː.mɪŋ.li/

seemingly

一見, 見た目では静か
Meaning
appearing to be true, but not necessarily so
Example
He was seemingly calm despite the chaos around him.
周りの混乱にもかかわらず、彼は一見静かだった。
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 noun /ˈsed.ɪ.mənt/

Sediment

堆積物
Meaning
matter that settles to the bottom of a liquid; particles deposited by water or wind
Example
The river carried sediment downstream during the flood.
川は洪水の間に堆積物を下流へ運んだ。
B1 noun, verb /ˈseɪ.lɪŋ/

sailing

帆走
Meaning
The act of traveling in a boat or ship using sails; the sport or activity of navigating a boat with sails.
Example
We went sailing on the lake during the summer.
私たちは夏に湖で帆走をしました。
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 noun /ˈstrɑːtəm/

stratum

層
Meaning
a layer or level of material, or a social class in society
Example
The upper stratum of society enjoyed privileges not available to others.
社会の上層部は他の人々が手に入れられない特権を享受していました。
C1 noun /ˈsɜːrəɡət/

surrogate

代理人
Meaning
A substitute, especially a person deputizing for another in a specific role or office.
Example
The surrogate mother gave birth to the child after carrying it for nine months.
代理母は九か月間子どもを妊娠してから子どもを出産した。
C2 noun /ˈskɜː.vi/

scurvy

壊血病
Meaning
A disease caused by a deficiency of vitamin C, leading to weakness, gum disease, and bleeding.
Example
Sailors often suffered from scurvy during long sea voyages without fresh fruits.
水夫たちは、新鮮な果物がない長い海の航海中によく壊血病にかかっていました。
C1 verb /spɔːn/

spawn

生み出す
Meaning
to produce or generate, often in large numbers
Example
The video game has spawned many sequels.
そのビデオゲームは多くの続編を生み出しました。
B2 noun /ˈsɪblɪŋ/

sibling

兄弟姉妹
Meaning
A brother or sister.
Example
She has three siblings, two brothers and one sister.
彼女は三人の兄弟姉妹がいます。二人の兄と一人の妹。
C1 adjective /ˈsɪm.jʊ.leɪ.tɪd/

simulated

シミュレートされた
Meaning
Artificially created to look real but not actually real.
Example
The pilot trained in a simulated flight environment.
パイロットはシミュレートされた飛行環境で訓練しました。
C2 verb /ˈsʌpjʊˌreɪt/

suppurate

膿が出る
Meaning
to form or discharge pus, usually as a result of infection
Example
The wound began to suppurate after a few days.
傷口は数日後に膿を出し始めました。
C1 adjective /ˈsek.j ə.l ər/

Secular

世俗的
Meaning
not connected with religious or spiritual matters; worldly
Example
The country maintains a secular government that separates religion from politics.
その国は宗教と政治を分離する世俗的な政府を維持している。
C1 verb /ˈstɪɡmətaɪz/

stigmatize

スティグマタイズする
Meaning
to describe or regard someone as worthy of disgrace or disapproval
Example
People with certain illnesses are often unfairly stigmatized.
特定の病気の人々はしばしば不当な方法でスティグマタイズされる。
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。