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A2 adjective /sər'praɪzd/

Surprised

驚いた
Meaning
feeling or showing surprise; astonished
Example
I was surprised to see my old friend at the market.
私は市場で古い友達を見て驚きました。
A2 noun /ʃiːt/

sheet

シーツ
Meaning
a large piece of cloth or paper, typically used to cover or protect something
Example
I need a clean sheet to cover the bed.
ベッドを覆うために清潔なシーツが必要です。
A2 verb /səˈdʒɛst/

suggest

提案する
Meaning
to put forward an idea, plan, or recommendation for consideration
Example
He suggested going to the new restaurant for dinner.
彼は新しいレストランで夕食を取ることを提案しました。
C2 noun /spjuːm/

spume

泡
Meaning
Froth or foam, especially found on waves or liquids.
Example
The waves crashed against the rocks, leaving spume in the air.
波が岩にぶつかり、空気中に泡を残した。
C1 noun /ˈsækrɪlɪdʒ/

sacrilege

冒涜
Meaning
Violation or misuse of what is regarded as sacred.
Example
Stealing from the temple was considered an act of sacrilege.
寺院から盗むことは冒涜と見なされていました。
A2 noun /spuːn/

Spoon

スプーン
Meaning
an implement consisting of a small, shallow bowl on a long handle, used for eating, stirring, and serving food
Example
He used a spoon to eat his soup.
彼はスープを食べるためにスプーンを使った。
C1 verb /ˌsuːpərˈsiːd/

supersede

置き換える
Meaning
To replace or take the place of something because it is more modern or effective.
Example
This new law will supersede the old regulations.
この新しい法律は古い規則を置き換えます。
C1 adjective /ˈsɪnjuəs/

sinuous

曲がりくねった
Meaning
Having many curves, bends, or turns; winding.
Example
The hikers followed a sinuous path through the forest.
ハイカーたちは森を通る曲がりくねった道を進んだ。
B2 adjective /sə'spɪʃ.əs/

Suspicious

疑わしい; 不審な
Meaning
having or showing distrust; doubtful; questionable
Example
The police found his behavior very suspicious.
警察は彼の行動が非常に疑わしいと感じました。
C2 verb /swɪl/

swill

がぶがぶ飲む
Meaning
to drink something greedily or in large amounts
Example
He swilled down the beer in seconds.
彼は数秒でビールを飲み干した。
C1 adjective /ˈspeɪʃəl/

spatial

空間の
Meaning
relating to space or the position, area, and size of things
Example
The scientist studied the spatial arrangement of stars.
科学者は星の空間配置を研究しました。
C2 noun /ˈsætər/

satyr

幸せ
Meaning
a creature from Greek mythology depicted as a lustful being, often half-man and half-goat; by extension, a lecherous man
Example
In the museum mural, a satyr plays the panpipes while dancing in the woods.
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。
B2 noun /səˈspens/

Suspense

サスペンス
Meaning
a feeling of excited or anxious uncertainty about what will happen
Example
The movie kept us in suspense until the very end.
映画は最後まで私たちをサスペンスの中に保ちました。
A2 noun /ˈsɪstəm/

system

システム
Meaning
a set of connected parts forming a complex whole; an organized method
Example
The education system needs major reforms.
教育システムには大きな改革が必要です。
B2 noun /ˈsɪmpəθi/

Sympathy

同情
Meaning
feelings of pity and sorrow for someone else's misfortune
Example
She expressed her sympathy for the victims of the accident.
彼女は事故の被害者に対して同情を表明した。
B2 verb /ˈspɛsɪfaɪ/

specify

指定する
Meaning
to state or describe something clearly and exactly
Example
Please specify the time and place of the meeting.
会議の時間と場所を指定してください。
B1 noun /ˈsʌn.laɪt/

sunlight

日光
Meaning
Direct light from the sun.
Example
Sunlight does not reach the abyssal depths of the ocean.
日光は海洋の深海には届かない。
C2 noun /sɪlf/

sylph

シルフィード
Meaning
A mythical spirit of the air; also refers to a slender, graceful woman.
Example
She moved across the stage like a sylph, light and graceful.
彼女は舞台上をシルフィードのように軽やかで優雅に動いていました。
B2 adjective /stɜːrn/

Stern

厳格な; 厳しい
Meaning
serious and demanding exact conformity to rules; strict and severe
Example
The teacher gave the students a stern warning about cheating.
教師は学生に対してカンニングについて厳しい警告を与えました。
C2 adjective /ˈsuːpaɪn/

supine

仰向けで横たわる
Meaning
Lying on the back, face upward; failing to act due to laziness or weakness.
Example
He lay supine on the grass, staring at the stars.
彼は草の上に仰向けで横たわり、星を見ていた。
C2 adjective /ˌstaʊtˈhɑːrtɪd/

stouthearted

勇敢な
Meaning
Brave, determined, and courageous
Example
The stouthearted soldier never gave up.
勇敢な兵士は決して諦めなかった。
B1 adjective /ˈsuːtəbl/

suitable

適切
Meaning
appropriate or right for a particular person, purpose, or situation
Example
This dress is suitable for the wedding.
このドレスは結婚式に適しています。
B2 noun /ˈʃɔːr.tɪdʒ/

Shortage

不足
Meaning
a lack or deficiency of something that is needed or expected
Example
There is a severe water shortage in the region.
その地域では深刻な水不足が起きている。
A1 modal verb /ʃʊd/

should

べき
Meaning
used to indicate obligation or duty
Example
You should study for your exams.
試験のために勉強すべきです。
B1 noun, verb /skiːm/

scheme

計画 / 陰謀
Meaning
a plan or arrangement, especially one that is secret or dishonest
Example
They devised a scheme to cheat investors.
彼らは投資家をだますために計画を立てました。
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。
A2 noun /sɔːlt/

Salt

塩
Meaning
white crystalline substance used for seasoning food; sodium chloride
Example
Please add some salt to the soup to enhance its flavor.
風味を引き立てるために、スープに塩を少し加えてください。
C1 adjective /səbˈdʒɛktɪv/

subjective

主観的
Meaning
based on personal feelings, tastes, or opinions rather than facts
Example
Beauty is often considered a subjective concept.
美しさはしばしば主観的な概念と見なされます。
A2 noun/verb/adjective /ˈsʌbdʒɪkt/ (noun), /səbˈdʒɛkt/ (verb)

subject

科目
Meaning
noun: a topic or theme; verb: to cause to undergo; adjective: dependent or under authority
Example
The teacher introduced a new subject in class.
先生はクラスで新しい科目を紹介しました。
A1 noun /skuːl/

school

学校
Meaning
An institution for educating children; also a group of people sharing the same ideas or discipline.
Example
The children walked to school together.
子供たちは一緒に学校に歩いて行きました。
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。
A2 noun /staɪl/

Style

スタイル
Meaning
a particular way of doing something; a distinctive appearance or manner of expression
Example
She has her own unique style of writing that captivates readers.
彼女は読者を魅了する独自の書き方を持っている。
C2 adjective /sɪˈnæp.tɪk/

synaptic

シナプスの
Meaning
Related to the signal transmission process between nerve cells.
Example
Learning strengthens synaptic connections in the brain.
学習は脳内のシナプス接続を強化する。
B2 adjective /ˈsʌt.əl/

subtle

微妙, 軽い, 精密
Meaning
So delicate or precise as to be difficult to analyze or describe; making use of clever and indirect methods.
Example
The artist's use of color was subtle yet powerful.
アーティストの色使いは微妙でありながら力強かった。
C1 noun /ˈstænzə/

stanza

スタンザ
Meaning
a group of lines forming a unit in a poem or song
Example
The poem begins with a stanza describing nature.
その詩は自然を描写するスタンザで始まります。
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。
B2 adjective /ˈstæt.ɪk/

static

静的
Meaning
Lacking in movement, action, or change; stationary.
Example
Static ideas hinder progress.
静的な考えは進展を妨げる。
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。
B2 verb, noun /stæb/

stab

刺す
Meaning
to pierce or wound with a pointed weapon or object
Example
He was stabbed in the back during the altercation.
彼は口論中に背中を刺されました。
C2 noun /ˈsiːkənt/

secant

割線
Meaning
A straight line that intersects a curve at two or more points.
Example
In geometry, a secant cuts the circle at two distinct points.
幾何学では、割線は円を二つの異なる点で交差します。
A2 adjective /skaɪ bluː/

Sky-blue

空色
Meaning
a bright blue color like that of a clear sky
Example
Her sky-blue eyes sparkled in the sunlight.
彼女の空色の目が太陽の光で輝いていた。
B2 verb /ˈskræmbəl/

scramble

Meaning
to move or climb quickly using hands and feet; to mix or arrange in a hurried way
Example
The kids scrambled up the hill to catch the kite.
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。
B2 adjective /ˈspɒtɪd/

Spotted

斑点のある; 見られた; マークされた
Meaning
having spots or marks; noticed or seen
Example
The spotted leopard moved silently through the jungle.
斑点のあるヒョウはジャングルを静かに歩いた。
C2 noun /ˈsælvər/

salver

銀のトレイ
Meaning
A tray, typically made of silver, used for serving food or drinks.
Example
The butler brought in the tea on a silver salver.
執事は銀のトレイでお茶を運んできました。
C1 verb/noun /skɒtʃ/

scotch

終わらせる / スコッチウイスキー
Meaning
to put an end to something; also a type of whisky
Example
The report scotched the rumors of a merger.
報告書は合併の噂を終わらせました。
B2 noun /ˈspaɪs bɒks/

Spice box

スパイス箱
Meaning
a container used to store various spices and seasonings
Example
She opened the spice box to find cumin for her curry.
彼女はカレー用のクミンを見つけるためにスパイスボックスを開けました。
B2 noun /ˈsɪɡ.nəlz/

signals

信号
Meaning
A gesture, action, or sound conveying information or instructions.
Example
Signals from deep space were detected last week.
深宇宙からの信号は先週検出されました。
B1 noun /ˈspɪr.ɪt/

Spirit

精神; 魂; 熱意; 勇気
Meaning
the non-physical part of a person; enthusiasm or courage; the essential character of something
Example
The team showed great spirit despite losing the match.
チームは試合に負けても素晴らしいスピリットを見せました。
C1 verb /ˈskruː.tɪ.naɪz/

scrutinize

慎重に調べる
Meaning
Examine or inspect closely and thoroughly.
Example
The scientist scrutinized the data before publishing his findings.
科学者は自分の発見を公開する前にデータを慎重に調べました。
B1 noun, verb /spoʊk/

spoke

スポーク / 言った
Meaning
As a noun, a bar connecting the center of a wheel to its rim; as the past tense of 'speak'.
Example
The bicycle's spoke was bent after the accident.
自転車のスポークは事故後に曲がっていた。
B2 noun ˈʃeɪdɪd ˈɛəriə

shaded area

日陰のエリア
Meaning
An area that is protected from direct sunlight.
Example
We sat in a shaded area by the riverbank.
私たちは川の岸辺の日陰のエリアに座っていました。
B2 noun /ˌsɛlf ɪˈstiːm/

self-esteem

自尊心
Meaning
confidence in one's own worth or abilities; self-respect
Example
Building self-esteem takes time and consistent effort.
自尊心を築くには時間と一貫した努力が必要です。
B2 verb /ˈsmʌɡəl/

smuggle

Meaning
to move goods illegally into or out of a country
Example
The gang tried to smuggle gold across the border.
A2 verb /sɜːrv/

serve

提供する
Meaning
to provide service; to work for; to offer food or drink
Example
She serves breakfast at 8 AM every morning.
彼女は毎朝8時に朝食をサーブします。
B2 noun /ˈskɛlɪtən/

skeleton

骨格
Meaning
The internal framework of bones that supports the body of a human or animal.
Example
The teacher showed the students a human skeleton in the biology class.
先生は生物の授業で学生たちに人間の骨格を見せました。
B2 noun /ˈskriːnɪŋ/

screening

スクリーニングまたは上映
Meaning
the act of examining or testing people to detect disease or evaluate suitability; a showing of a movie or program
Example
The hospital offered free health screening for all employees.
病院はすべての従業員に無料の健康スクリーニングを提供しました。
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。
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。
B2 verb /ˈstrɛŋkθən/

strengthen

強化する
Meaning
To make or become stronger.
Example
Communication can strengthen bonds between people.
コミュニケーションは人々の間の絆を強化することができます。
B2 noun /sɪɡˈnɪf.ɪ.kəns/

Significance

重要性
Meaning
the quality of being worthy of attention; importance
Example
The discovery has great significance for medical research.
その発見は医学研究にとって大きな意義があります。
A1 adjective /ˈspɛʃəl/

special

特別
Meaning
different from what is usual; better or greater than normal
Example
This gift is very special to me.
このギフトは私にとってとても特別です。
C1 noun /ˈsʌm.ɪt əv ðə ˈfjuː.tʃər/

Summit of the Future

未来のサミット
Meaning
A high-level conference focused on addressing future challenges and opportunities.
Example
The Summit of the Future addressed global challenges.
未来のサミットは世界的な課題を取り上げました。
B1 verb /ˈsʌfər/

suffer

苦しむ
Meaning
to experience pain, distress, or hardship
Example
She suffered from a severe headache all day.
彼女は一日中ひどい頭痛に苦しんでいました。
C2 verb /sweɪð/

swathe

Meaning
To wrap or cover closely or completely.
Example
She swathed the baby in a soft blanket.
B2 adjective /slaɪ/

sly

ずるい / 狡猾
Meaning
Clever in a deceitful or cunning way.
Example
She gave him a sly smile.
彼女は彼にずるい笑顔を向けた。
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。
C1 adjective /ˈstɒdʒi/

stodgy

退屈な、時代遅れな
Meaning
Dull, uninspired, or old-fashioned; also heavy and hard to digest when referring to food.
Example
The lecture was so stodgy that many students struggled to stay awake.
その講義はあまりにも退屈で、多くの学生が目を覚ますのに苦労しました。
C2 adjective /spæzˈmɒdɪk/

spasmodic

痙攣性
Meaning
occurring irregularly or in sudden bursts
Example
The patient experienced spasmodic coughing during the night.
患者は夜間に痙攣性の咳を経験しました。
B2 noun sliːp ˌdɛprɪˈveɪʃən

sleep deprivation

睡眠不足
Meaning
The condition of not having enough sleep; lack of adequate sleep.
Example
Sleep deprivation can severely impact mental health.
睡眠不足は精神的な健康に深刻な影響を与える可能性があります。
C2 adjective /səˈmætɪk/

somatic

身体的
Meaning
Relating to the body, especially as distinct from the mind.
Example
Yoga can improve both somatic and mental health.
ヨガは身体的および精神的健康を改善することができます。
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 /ˈsaɪd.laɪn dɪˈskʌʃənz/

sideline discussions

サイドラインの議論
Meaning
Informal or secondary conversations that occur outside the main agenda of a formal meeting.
Example
Sideline discussions often lead to agreements.
サイドラインの議論はしばしば合意に至ります。
B1 adverb /səkˈsɛsfəli/

successfully

成功裏に
Meaning
in a way that achieves a desired result
Example
She passed the exam successfully after weeks of studying.
彼女は数週間の勉強の後、試験に成功裏に合格しました。
A1 noun /sɔːŋ/

song

歌
Meaning
a short piece of music with words that are sung
Example
She sang a beautiful song at the concert.
彼女はコンサートで美しい歌を歌った。
C1 noun/verb /ˈsuː.tʃər/

suture

縫合
Meaning
A stitch or row of stitches holding together the edges of a wound or surgical incision.
Example
The doctor used a suture to close the wound.
医者は傷を閉じるために縫合糸を使いました。
A2 noun səkˈsɛs

success

成功
Meaning
The accomplishment of an aim or purpose; the attainment of popularity or profit
Example
Success requires focus and determination.
成功には集中と決意が必要です。
C2 adjective /ˈsɪŋkəˌpeɪtɪd/

syncopated

シンコペイテッド
Meaning
Characterized by displaced beats or rhythms, especially in music.
Example
The jazz piece had a syncopated rhythm that energized the crowd.
ジャズの曲には、群衆を元気づけたシンコペイテッドのリズムがありました。
B1 adjective /ˈsɪniər/

senior

シニア
Meaning
having a higher rank or status; older or more experienced
Example
He is the senior manager in the department.
彼は部門のシニアマネージャーです。
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。
B2 noun /ˌsuːvəˈnɪər/

Souvenir

お土産
Meaning
a thing that is kept as a reminder of a person, place, or event; a memento
Example
I bought a small souvenir from the gift shop.
私はギフトショップで小さな土産を買いました。
C2 adjective /ˈsloʊθfəl/

slothful

怠惰
Meaning
Lazy, idle, and unwilling to work.
Example
She was too slothful to get out of bed early.
彼女はベッドから早く起きるにはあまりにも怠惰でした。
B2 noun /speɪd/

Spade

シャベル
Meaning
a tool with a flat blade for digging; a playing card suit
Example
The gardener used a spade to dig holes for planting flowers.
庭師は花を植えるために穴を掘るためにシャベルを使いました。
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。
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 verb /səbˈvɜːrt/

subvert

Meaning
to undermine or overthrow an established system, authority, or institution
Example
The rebels tried to subvert the government.
A2 noun /sænd/

sand

幸せ
Meaning
Small loose grains of crushed rock, found on beaches and deserts.
Example
Children built castles out of sand on the beach.
彼女は賞を受け取ったとき、幸せを隠せなかった。
C1 adjective /ˈspaɪn.ləs/

Spineless

勇気がない; 意志が弱い; 臆病
Meaning
lacking courage or determination; weak-willed
Example
He was too spineless to stand up for his beliefs.
彼は自分の信念を貫くには、あまりにも臆病すぎた。
C2 verb /ˈsɪbəleɪt/

sibilate

シューという音で発音する
Meaning
To pronounce with a hissing sound.
Example
The actor sibilated his lines for dramatic effect.
俳優はドラマチックな効果のためにセリフをシューという音で発音しました。
B1 noun, verb /stɒk/

stock

在庫
Meaning
a supply of goods kept for sale or use; to keep or fill with goods
Example
The shop stocks a wide variety of products.
その店はさまざまな製品を在庫しています。
C1 verb /sərˈpæs/

surpass

超える
Meaning
to exceed or go beyond
Example
Her performance surpassed all expectations.
彼女のパフォーマンスはすべての期待を上回った。
C1 adjective /ˈskrɪptʃərəl/

scriptural

聖書に関連する
Meaning
Relating to or contained in the scriptures or holy writings.
Example
The priest gave a scriptural reference during the sermon.
牧師は説教中に聖書の参照をしました。
A1 noun/adjective /saʊθ/

south

南
Meaning
the direction towards the bottom of a map, opposite to north
Example
The sun rises in the east and sets in the south.
太陽は東で昇り、南で沈みます。
B2 noun /stjuːˈpɪdəti/

stupidity

愚かさ
Meaning
lack of intelligence or common sense
Example
His stupidity caused a lot of problems for the team.
彼の愚かさはチームに多くの問題を引き起こした。
B2 noun /ˈstiː.mər/

Steamer

蒸気船
Meaning
a ship or boat powered by steam engines
Example
The old steamer crossed the river slowly.
古い蒸気船がゆっくり川を渡った。
C1 verb /ˈskʌr.i/

scurry

速く走る
Meaning
To move quickly with short, hurried steps.
Example
The mice scurried across the kitchen floor when the lights turned on.
ライトがついたとき、ネズミたちはキッチンの床を速く走った。
B2 noun, verb /slænt/

slant

偏った見解
Meaning
A particular point of view; to slope or lean in a particular direction.
Example
The article had a political slant.
その記事には政治的な傾向がありました。
B2 verb /sɔːr/

soar

高く飛ぶ / 急増する
Meaning
to fly or rise high in the air; to increase rapidly or dramatically
Example
The eagle soared high above the mountains.
ワシは山々の上を高く飛びました。
B1 noun /sɔːrs/

Source

源
Meaning
a place, person, or thing from which something originates; the origin of information
Example
The river's source is high in the mountains.
川の源流は山の高い所にある。
C2 noun /ˈsɛkstənt/

sextant

セクスタント
Meaning
a navigational instrument with a graduated arc of 60°, used to measure the angle between a celestial object and the horizon
Example
Using a sextant, the navigator fixed the ship’s position at noon.
セクスタントを使用して、ナビゲーターは正午に船の位置を特定しました。
C2 adjective /ˌsæpəˈneɪʃəs/

saponaceous

石鹸のような
Meaning
Soapy or having the qualities of soap.
Example
The plant has saponaceous leaves that produce foam when rubbed in water.
その植物には、摩擦で泡を作る石鹸のような葉があります。
C2 noun /sɒl/

sol

ソル（音楽のスケールの5番目の音）
Meaning
The fifth note of the sol-fa musical scale (do, re, mi, fa, sol, la, ti); also the Latin word for sun
Example
The choir practiced singing the note sol during rehearsal.
合唱団はリハーサル中にソル音を歌う練習をしました。
B2 noun /ˈswɛər wɜːrd/

swear-word

罵り言葉
Meaning
An offensive or rude word used to express anger or frustration.
Example
He shouted a swear-word when he hit his toe.
彼は足の指を打ったとき、罵り言葉を叫びました。
B2 noun /ˈsɪmptəm/

symptom

症状
Meaning
a sign or indication of something, especially of an illness
Example
Fever is a common symptom of the flu.
熱はインフルエンザの一般的な症状です。
C1 adjective /ˈsʌbstəntɪv/

substantive

重要
Meaning
Having a firm basis in reality; important, meaningful, or considerable.
Example
The company made substantive changes to its policy.
会社はその方針に重要な変更を加えました。
A1 noun /siː/

Sea

海
Meaning
a large body of salt water that covers most of the earth's surface
Example
We went swimming in the sea.
私たちは海で泳ぎました。
B2 noun /ˈsmɑːrt.nəs/

Smartness

知恵；賢さ；整然としたモダンな外観
Meaning
intelligence; cleverness; neat and fashionable appearance
Example
Her smartness in solving problems impressed everyone.
問題解決の際の彼女の知恵は、皆に感銘を与えました。
C1 noun səˈsteɪnəbəl ˈpræktɪsɪz

sustainable practices

持続可能な実践
Meaning
Methods and activities that can be maintained over time without depleting natural resources or harming the environment.
Example
Sustainable practices are vital for environmental preservation.
持続可能な実践は環境保護にとって重要です。
C2 verb /ʃiːð/

sheathe

鞘に戻す
Meaning
to put a sword or knife back into its cover
Example
He quickly sheathed his sword after the duel.
彼は決闘の後、素早く剣を鞘に戻した。
A2 verb /ˈstɑːtɪŋ/

starting

始める
Meaning
beginning to do or experience something
Example
She is starting a new job next week.
彼女は来週、新しい仕事を始める。
A2 adjective /ˈsɪli/

Silly

馬鹿な; 愚かな
Meaning
foolish; lacking good sense or judgement
Example
Don't be silly, of course you can do it!
馬鹿なこと言わないで、もちろんそれができるよ！
C1 adjective /ˈsiːzənəbəl/

Seasonable

季節に適した
Meaning
occurring at the right time; appropriate for the season; timely
Example
The seasonable rain helped the farmers with their crops.
季節の雨が農家の作物を助けました。
A2 noun /sɛlf/

self

自己
Meaning
a person's essential being that distinguishes them from others, especially considered as the object of introspection or reflexive action
Example
She has a strong sense of self.
彼女は強い自己認識を持っています。
C2 verb /ˌsuːpərˈæn.ju.eɪt/

superannuate

年金付き退職
Meaning
to retire someone with a pension, usually due to age or long service
Example
The company decided to superannuate its senior employees after thirty years of service.
その会社は三十年の勤務後、上級社員を年金付き退職することに決めました。
C2 adjective /sɛpˈtɛnɪəl/

septennial

7年ごとの
Meaning
Occurring every seven years.
Example
The festival is a septennial tradition in the village.
その祭りは村で7年ごとの伝統です。
C1 noun /ˈsɪmətri/

symmetry

対称
Meaning
the quality of having balanced proportions or identical parts facing each other
Example
The building’s symmetry impressed the visitors.
建物の対称性は訪問者に感銘を与えました。
A1 verb /seɪ/

say

言う
Meaning
to speak words; to express something in words
Example
She said hello to me.
彼女は私にハローと言った。
B1 adverb /səˈpraɪzɪŋli/

surprisingly

驚くべきことに
Meaning
in a way that causes surprise or amazement
Example
Surprisingly, she finished the entire project in just one day.
驚くべきことに、彼女は1日でプロジェクト全体を終わらせました。
C1 noun /ˌsɪmbɪˈəʊsɪs/

symbiosis

共生関係
Meaning
A mutually beneficial relationship between different people or groups.
Example
The symbiosis between the two companies led to mutual growth.
二つの会社間の共生関係は相互成長につながった。
A1 verb /sliːp/

sleep

眠る
Meaning
to rest with eyes closed and reduced consciousness; to be inactive
Example
I need to sleep for eight hours every night.
毎晩8時間寝る必要があります。
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。