slowly
All a b c d e f g h i j k l m n o p q r s t u v w x y z
All CEFR A1 A2 B1 B2 C1 C2
Content locale
EN 英語 BN ベンガル語 HI ヒンディー語 ES スペイン語 FR フランス語 DE ドイツ語 RU ロシア語 ZH 中国語 JA 日本語
All Vocabulary Cards All Vocabularies
A2 adverb /ˈsloʊli/

slowly

ゆっくり
Meaning
in a slow manner
Example
She walked slowly to the door.
彼女はゆっくりとドアに向かって歩いた。
B1 noun /swiːt pəˈteɪtoʊ/

Sweet potato

さつまいも
Meaning
A root vegetable with sweet flesh, typically orange or purple in color
Example
Roasted sweet potato makes a healthy and delicious side dish.
ローストさつまいもは健康的でおいしいサイドディッシュを作ります。
B1 noun /ˈsæm.ən/

salmon

サーモン
Meaning
A large fish with pink flesh, often eaten as food.
Example
They served grilled salmon for dinner.
彼らは夕食にグリルしたサーモンを出しました。
C2 noun /sɪˈdɪʃ.ən/

Sedition

反乱罪
Meaning
conduct or speech inciting people to rebel against authority; treason
Example
The activist was charged with sedition for his inflammatory speeches.
活動家はその扇動的な演説のために反乱罪で起訴された。
C2 adjective /ˌsɒfəˈmɒrɪk/

sophomoric

未熟
Meaning
showing immaturity and overconfidence, like a sophomore
Example
His sophomoric behavior embarrassed his friends.
彼の未熟な行動は友人たちを恥ずかしい思いにさせた。
C2 noun /səˈlɪsɪˌtuːd/

solicitude

思いやり, 配慮
Meaning
Care or concern for someone or something.
Example
His mother showed great solicitude for his safety.
彼の母親は彼の安全に大きな思いやりを示しました。
C1 adjective /ˈsɛnʃənt/

sentient

感覚的
Meaning
Able to perceive or feel things.
Example
Humans are sentient beings capable of reasoning.
人間は推論する能力を持った感覚的存在です。
A2 noun /siːn/

scene

シーン
Meaning
a place or setting of an event or activity, or the part of a play or film
Example
The final scene of the movie was very emotional.
映画の最後のシーンはとても感動的でした。
B1 noun /sʌm/

sum

合計
Meaning
the total amount resulting from the addition of two or more numbers or items
Example
The sum of 8 and 12 is 20.
8と12の合計は20です。
C1 noun /ˈskælpəl/

scalpel

メス
Meaning
A small and extremely sharp bladed instrument used for surgery and dissection.
Example
The surgeon carefully used a scalpel to make the first incision.
外科医は慎重にメスを使って最初の切開を行いました。
B2 adjective /ˈsteɪʃəˌneri/

stationary

静止
Meaning
Not moving or not intended to be moved.
Example
The car remained stationary at the red light.
車は赤信号で静止したままでした。
C1 noun /ˈspɛktər/

specter

幽霊
Meaning
A ghost or spirit; something that causes fear or dread.
Example
The specter of war still haunts the region.
戦争の幽霊は今でもその地域をおびやかしています。
B2 noun /soʊp keɪs/

Soap case

石鹸ケース
Meaning
a container used to store soap
Example
She bought a beautiful soap case for the bathroom.
彼女はバスルーム用に美しい石鹸ケースを買いました。
C2 adjective /ˈstɪdʒiən/

stygian

暗黒
Meaning
extremely dark, gloomy, or forbidding
Example
They walked through the stygian cave with torches.
彼らは松明を持って暗黒の洞窟を歩いていました。
B2 noun /səˈspɪʃən/

Suspicion

疑い
Meaning
a feeling or thought that someone is guilty of an illegal or dishonest activity
Example
The police arrested him on suspicion of theft.
警察は窃盗の疑いで彼を逮捕しました。
B1 noun /skɑːrf/

Scarf

スカーフ
Meaning
a length of fabric worn around the neck or head for warmth, protection, or fashion
Example
She wrapped a warm scarf around her neck in the cold weather.
彼女は寒い天気で暖かいスカーフを首に巻きました。
C1 adjective /ˈsɛnʃuəs/

sensuous

官能的
Meaning
Relating to or affecting the senses rather than the intellect; pleasing to the senses.
Example
The garden was filled with sensuous colors and fragrances.
庭は官能的な色と香りで満たされていた。
B2 verb /sʌk/

suck

吸う
Meaning
to draw something into the mouth by using the lips and tongue
Example
The baby began to suck her thumb.
赤ちゃんは親指を吸い始めた。
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/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。
B2 verb /ʃɛd/

shed

落ちる
Meaning
to let something fall off naturally, such as leaves, hair, or tears
Example
Trees shed their leaves in autumn.
木々は秋に葉を落とします。
A2 noun steɪt

state

国
Meaning
A nation or territory considered as an organized political community under one government.
Example
The state declared a new language policy.
国は新しい言語政策を発表しました。
C1 noun /ˈstreɪnər/

Strainer

こし器
Meaning
a device having holes punched in it or made of crossed wires for separating solid matter from a liquid
Example
Use a strainer to drain the pasta water.
パスタの水を切るためにこし器を使ってください。
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.
B2 verb /ʃʌv/

shove

押す
Meaning
to push someone or something roughly
Example
He shoved the box into the corner.
彼は箱を隅に押し込んだ。
B1 noun /ˈʃel.tər/

Shelter

避難所
Meaning
a place giving temporary protection from bad weather or danger
Example
The hikers found shelter in a cave during the heavy rain.
ハイカーたちは大雨の間、洞窟の中に避難所を見つけた。
B1 verb /stɛə/

stare

じっと見る
Meaning
to look at something with a fixed gaze
Example
She stared at the painting for hours.
彼女は何時間も絵をじっと見つめていました。
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 /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。
B2 noun /ˈsɒlɪtjuːd/

solitude

孤独
Meaning
The state or situation of being alone.
Example
Solitude can provide the opportunity for deep reflection.
孤独は深い反省の機会を提供することができます。
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。
B2 noun /spaʊs/

spouse

配偶者
Meaning
a person's husband or wife
Example
Each employee may include their spouse in the health insurance plan.
各従業員は配偶者を健康保険プランに含めることができます。
C2 adjective səˈluː.bri.əs

salubrious

健康的
Meaning
Health-giving; healthy; promoting health and well-being.
Example
The mountain air is salubrious and refreshing.
山の空気は健康的でさわやかです。
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。
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 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 noun /səˈlaɪ.və/

Saliva

唾液
Meaning
the watery liquid secreted into the mouth by glands
Example
The dentist asked her to rinse the saliva from her mouth.
歯科医は彼女に口の中の唾液をすすぐように言った。
A2 noun /smɔːl boʊl/

Small bowl

小さなボウル
Meaning
a round, shallow container of small size used for serving food or liquids
Example
She served the soup in a small bowl.
彼女は小さなボウルにスープを盛りました。
A2 verb /səˈpəʊz/

suppose

仮定する
Meaning
to assume or believe something is true without proof
Example
I suppose she will be here soon.
私は彼女がすぐにここに来ると思います。
C1 verb /ˌsuːpərɪmˈpoʊz/

superimpose

重ね合わせる
Meaning
to place one thing on top of another so that both can be seen
Example
The editor superimposed text over the image.
編集者は画像にテキストを重ね合わせました。
B2 noun smɔːl ˈɛfərt

Small Effort

小さな努力
Meaning
Minor actions or initiatives that can collectively make a significant impact.
Example
Small efforts can bring big changes in butterfly conservation.
小さな努力が蝶の保護に大きな変化をもたらすことができる。
C1 verb/noun /skaʊl/

scowl

しかめっ面をする
Meaning
To frown in an angry or bad-tempered way.
Example
She scowled when she heard the unfair remark.
彼女は不公平なコメントを聞いてしかめっ面をした。
C1 adjective /ˈskrɔːni/

scrawny

痩せ細った
Meaning
very thin and bony, often looking unhealthy
Example
The scrawny boy could barely lift the heavy bag.
その痩せ細った少年は重いバッグをほとんど持ち上げることができなかった。
B2 noun/verb /ˈsɜːveɪ/

survey

調査, アンケート
Meaning
noun: an examination or inspection; verb: to examine or measure (an area or subject)
Example
They conducted a survey to understand customer preferences.
彼らは顧客の好みを理解するために調査を行いました。
C1 verb ˈsɪŋ.krə.naɪz

synchronize

同期させる
Meaning
To coordinate in time; to cause to occur or operate at the same time or rate.
Example
The dancers need to synchronize their movements.
ダンサーは彼らの動きを同期させる必要があります。
C2 noun /stɒˈkeɪd/

stockade

木製の塀
Meaning
a defensive barrier made of strong posts or timbers, often around a fort or prison
Example
The prisoners were kept inside the wooden stockade.
囚人は木製の塀の中に閉じ込められていました。
B2 noun səbˈstænʃəl ˈɪmpækt

substantial impact

重大な影響
Meaning
A significant, considerable, and meaningful effect or influence.
Example
Substantial impact is possible even with a few hours of volunteering.
少しの時間のボランティア活動でも重大な影響を与えることができます。
C1 noun /ˈskaʊndrəl/

scoundrel

悪党
Meaning
a dishonest or unscrupulous person; a villain
Example
That scoundrel cheated the old man out of his savings.
その悪党は老人から貯金を騙し取った。
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。
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。
B1 verb /spred/

spread

広める
Meaning
to extend over a larger area; to distribute; to apply
Example
The news spread quickly through the town.
そのニュースは町中に素早く広まりました。
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。
B1 adjective ˈsʌb.mə.riːn

submarine

潜水艦
Meaning
Existing, occurring, or used underwater, especially in relation to vessels or cables.
Example
Submarine cables facilitate international communication.
潜水艦ケーブルは国際通信を容易にします。
B2 noun /sɪlk/

silk

絹
Meaning
a fine, smooth fabric made from the threads produced by silkworms
Example
The dress was made of pure silk.
そのドレスは純粋な絹で作られていた。
B2 noun /sɪnˈserɪti/

Sincerity

誠実さ
Meaning
the quality of being free from pretense or deceit; honesty
Example
His sincerity in apologizing was evident to everyone.
彼の謝罪の真摯さは、すべての人に明らかだった。
C1 adverb /ˈsɜːrtʃɪŋli/

searchingly

探求的に
Meaning
In a way that seems to look for hidden meanings or truth.
Example
She looked at him searchingly, hoping for an honest answer.
彼女は正直な答えを望んで、探し求めるように彼を見つめた。
B1 noun ˈstrætədʒi

strategy

戦略
Meaning
A plan of action designed to achieve a long-term or overall aim.
Example
The strategy ensured success.
その戦略は成功を保証しました。
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。
B2 verb /ʃrɪŋk/

shrink

縮む
Meaning
to become smaller in size; to draw back in fear
Example
The sweater shrank after washing in hot water.
セーターは熱い水で洗った後、縮んだ。
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。
C2 noun /ˈsfɛrɔɪd/

spheroid

回転楕円体
Meaning
A three-dimensional shape that is almost spherical but slightly flattened or elongated.
Example
The Earth is not a perfect sphere but an oblate spheroid.
地球は完璧な球体ではなく、偏平な回転楕円体です。
C1 noun /sɪˈtɑːr/

Sitar

シタール
Meaning
a traditional Indian stringed musical instrument with a long neck and resonating body
Example
The sitar creates beautiful ragas in Indian classical music.
シタールはインディアン・クラシック音楽の中で美しいラガを作り出します。
B2 noun, verb /skruː/

screw

螺旋状の金属製ファスナー; 何かをねじで締める
Meaning
a metal fastener with a helical ridge; to fasten or tighten something with a screw
Example
He screwed the shelf to the wall tightly.
彼は棚を壁にしっかりとねじ込んだ。
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。
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。
C1 noun /ˈseɪɑːns/

seance

霊的なセッション
Meaning
A meeting where people attempt to communicate with the spirits of the dead.
Example
They held a seance to contact their late grandmother.
彼らは亡くなった祖母と連絡を取るために霊的なセッションを開いた。
B1 noun /ˈsæm.pəl/

Sample

サンプル
Meaning
a small part taken as an example of the whole; a specimen
Example
The doctor took a blood sample for testing.
医師はテストのために血液サンプルを取った。
C1 noun /ˌsəʊʃəˈbɪləti/

sociability

社交性
Meaning
The quality or state of being sociable; friendliness.
Example
Her sociability made her popular in the office.
彼女の社交性はオフィスで人気を集めました。
C1 noun /səˈvænə/

savanna

サバンナ（散在する木々がある草原）
Meaning
a grassy plain with scattered trees, typical of tropical and subtropical regions
Example
Giraffes browsed on acacia trees across the wide savanna.
キリンは広いサバンナでアカシアの木の葉を食べていました。
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。
C2 adjective /ˈskʌr.ɪ.ləs/

scurrilous

中傷的な
Meaning
Using or expressed in coarse, abusive, or slanderous language.
Example
The politician faced criticism for his scurrilous remarks about his opponent.
その政治家は対立候補についての中傷的な発言で批判を浴びた。
C2 adjective /ˈswɔːrði/

swarthy

日焼けした
Meaning
Having a dark complexion or skin tone.
Example
The sailor had a swarthy face from years under the sun.
その水夫は、何年も太陽の下で働いたため、日焼けした顔をしていた。
C2 adjective /spraɪ/

spry

活発
Meaning
active and lively, especially in old age
Example
The spry grandmother surprised everyone with her quick dance steps.
活発な祖母は素早いダンスステップで皆を驚かせました。
B1 adjective /ˈsɒlɪd/

solid

固体
Meaning
firm and stable in shape; not liquid or fluid
Example
The ground was solid underfoot.
地面は足元で固かった。
B1 noun /ˌsaʊθˈiːst/

southeast

南東
Meaning
the direction that is between south and east; a region in that direction
Example
The city is located in the southeast of the country.
その都市は国の南東に位置しています。
C2 verb /səˈfjuːz/

suffuse

広がる
Meaning
to gradually spread through or over something
Example
A warm glow suffused her face as she smiled.
彼女が微笑んだとき、暖かい輝きが彼女の顔に広がった。
C2 noun /ʃiːf/

sheaf

麦の束
Meaning
a bundle of grain stalks laid lengthwise and tied together after reaping; a bundle of objects tied together
Example
The farmer carried a sheaf of wheat on his shoulder.
農夫は肩に小麦の束を運んでいました。
C2 noun /ˈsuːpsɒ̃/

soupcon

少量
Meaning
a very small quantity of something; a trace
Example
She added just a soupcon of spice to the dish.
彼女は料理にほんの少しスパイスを加えた。
B1 adjective /səˈfɪʃənt/

Sufficient

十分な; 目的に適した; 満足な
Meaning
enough; adequate for the purpose; satisfactory
Example
We have sufficient time to complete the project.
私たちはプロジェクトを完了するための十分な時間があります。
B2 noun /sərˈvaɪvər/

Survivor

生き残った人、特に他の人が亡くなった後に生き残った人
Meaning
a person who survives, especially a person remaining alive after an event in which others have died
Example
She is a cancer survivor who now helps other patients.
彼女はがんのサバイバーで、今は他の患者を助けています。
C2 adjective /ˈsmɑːrmi/

smarmy

お世辞 / 偽の礼儀
Meaning
Excessively flattering or ingratiating, often insincerely.
Example
The salesman gave a smarmy pitch that felt fake.
販売員は偽りのように感じるお世辞のような売り込みをしました。
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 স্ক্রোলিং অ্যাডিকশন

scrolling addiction

スクロール依存症
Meaning
A compulsive need to continuously scroll through content on digital devices, particularly smartphones and social media platforms.
Example
Scrolling addiction is a growing concern among smartphone users.
スクロール依存症はスマートフォンユーザーの間で増加している懸念事項です。
B2 noun ˈsɛv.ən ˈwʌn.dərz

Seven Wonders

七不思議
Meaning
The seven most remarkable and famous structures in the world, representing architectural feats and cultural significance.
Example
The Seven Wonders of the world reflect human brilliance.
世界の七不思議は人類の素晴らしさを反映しています。
C1 noun/verb /spuːf/

spoof

ユーモアのある模倣
Meaning
A humorous imitation of something, or to trick or parody someone or something.
Example
The comedian spoofed the politician’s speech to entertain the audience.
コメディアンは政治家の演説を模倣して観客を楽しませました。
C1 noun /ˌsɛlf ɪnˈdʌldʒəns/

self-indulgence

自己 indulgence
Meaning
The act of allowing oneself to enjoy pleasures or desires excessively.
Example
His weekend of self-indulgence included eating sweets and watching movies nonstop.
彼の自己満足の週末は、甘いものを食べて映画を見続けることが含まれていました。
C1 adjective /suːˈpɜːr.flu.əs/

superfluous

余分な
Meaning
Unnecessary, especially through being more than enough.
Example
His speech contained too many superfluous details.
彼のスピーチには、余分な詳細が多すぎた。
B1 adjective /ˈsʌm.wʌt/

Somewhat

やや; 少し; ほどほど
Meaning
to some extent; rather; moderately
Example
The movie was somewhat interesting but not great.
その映画は少し面白かったが、すごくはなかった。
B2 verb, noun /stɔːl/

stall

止める, 屋台
Meaning
to stop or cause to stop temporarily; a small shop or stand
Example
The car stalled on the way to the office.
車はオフィスに向かう途中で停まった。
B2 noun /ʃɪt/

shit

うんこ
Meaning
a vulgar term for feces or excrement
Example
The dog made a mess by leaving its shit on the floor.
犬は床にうんこを残して散らかしました。
C2 noun /sɪˈrɒkoʊ/

sirocco

熱く乾燥した風
Meaning
A hot, dry wind blowing from North Africa across the Mediterranean to southern Europe.
Example
The sirocco made the city unbearably hot and dusty.
シロッコは街を耐えられないほど暑く、ほこりっぽくした。
C2 noun /ˈstrɪndʒənsi/

stringency

厳格さ
Meaning
the quality of being strict, precise, or severe
Example
The stringency of the new rules surprised everyone.
新しい規則の厳格さはみんなを驚かせました。
C2 noun /ˈsɛm.ɪ.nɛr.i/

seminary

神学校
Meaning
A school or college for training priests, ministers, or rabbis.
Example
He decided to enroll in a seminary to study theology.
彼は神学校に入学して神学を学ぶことに決めました。
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 /seɪnt/

Saint

聖人として認められた人物; とても親切で忍耐強い人物
Meaning
person recognized as holy or virtuous; very kind or patient person
Example
Mother Teresa was declared a saint by the Catholic Church.
マザー・テレサはカトリック教会によって聖人と宣言されました。
B2 noun /ˈsɛm.iˌsɜːr.kəl/

semicircle

半円
Meaning
Half of a circle or something shaped like half of a circle.
Example
The students sat in a semicircle around the teacher.
学生たちは教師の周りに半円形に座っていました。
C1 noun /səˈprɛʃən/

suppression

抑制
Meaning
the act of forcibly stopping something or holding back feelings or actions
Example
The suppression of free speech led to protests.
言論の自由の抑制は抗議を引き起こした。
C2 noun /ˈsɜːrfɪt/

surfeit

過剰
Meaning
an excessive amount of something
Example
There was a surfeit of food at the festival.
祭りでは食べ物が過剰にあった。
B2 verb /səbˈskraɪb/

subscribe

購読する
Meaning
to pay to receive a service regularly; to agree with or support something
Example
I subscribe to several online magazines.
私はいくつかのオンライン雑誌を購読しています。
C2 noun /ˈseɪ.li.əns/

salience

顕著性
Meaning
The quality of being particularly noticeable or important; prominence.
Example
The salience of the issue was highlighted in the debate.
その問題の顕著性は討論で強調されました。
B1 adjective ˈsen.sɪ.tɪv

sensitive

敏感
Meaning
Quick to detect or respond to slight changes, signals, or influences.
Example
Sensitive systems require precise handling.
敏感なシステムは精密な操作が必要です。
C2 adjective /ˈsɪmiən/

simian

類人猿の
Meaning
Relating to, resembling, or affecting apes or monkeys.
Example
The scientist studied the simian behavior of the chimpanzees.
科学者はチンパンジーの類人猿の行動を研究した。
C2 verb /slʌf/ or /sluː/

slough

皮を捨てる / 湿地
Meaning
To shed or cast off (like dead skin); also a swampy or muddy area.
Example
The snake sloughed off its old skin.
ヘビは古い皮を捨てた。
C1 noun, adjective /ˈsɒlvənt/

solvent

溶剤, 債務を支払う能力
Meaning
a liquid that dissolves other substances; also means able to pay debts
Example
Acetone is a common solvent used in laboratories.
アセトンは実験室でよく使われる溶剤です。
C2 noun /ˈsɒfɪstri/

sophistry

詭弁
Meaning
the use of clever but false arguments, often to deceive
Example
The politician's speech was full of sophistry.
その政治家の演説は詭弁に満ちていた。
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。
B1 adverb /ˈsel.dəm/

Seldom

めったにない
Meaning
not often; rarely; infrequently
Example
She seldom goes to the cinema.
彼女はめったに映画館に行きません。
B2 phrase ˈsɛvən ˈhæbɪts

seven habits

七つの習慣
Meaning
Regular behaviors or actions that are done consistently over time, specifically referring to a set of seven key practices.
Example
Even habits help in maintaining a balanced lifestyle.
習慣はバランスの取れたライフスタイルを維持するのに役立ちます。
B1 verb /stæmp/

stamp

Meaning
To bring down (one's foot) heavily on the ground; to imprint a mark or seal.
Example
She stamped her foot in frustration.
C1 adjective sɪˈmæn.tɪk

semantic

言語における意味に関連する
Meaning
Related to meaning in language; concerning the interpretation of words and sentences.
Example
AI models use semantic analysis to understand context.
AIモデルはコンテキストを理解するためにセマンティック分析を使用します。
A2 adjective /ˈspænɪʃ/

spanish

スペイン語
Meaning
relating to Spain or the Spanish language
Example
She is fluent in Spanish and French.
彼女はスペイン語とフランス語に堪能です。
B2 noun /ˈsɜːr.plʌs/

surplus

余剰
Meaning
An amount that is more than what is needed.
Example
The country has a surplus of food this year.
今年、その国には食料の余剰があります。
C2 noun /ˈsɪŋkrəˌnɪzəm/

synchronism

シンクロニズム
Meaning
The simultaneous occurrence of events or actions.
Example
The synchronism of the dancers' movements amazed the audience.
ダンサーの動きのシンクロニズムは観客を驚かせました。
A1 noun /ˈʃɒpɪŋ/

shopping

ショッピング
Meaning
the activity of going to shops to buy things
Example
She spent the afternoon shopping for clothes.
彼女は午後に服を買うためにショッピングをして過ごしました。
A2 adjective /ˈsɛvənθ/

seventh

七番目
Meaning
constituting number seven in a sequence; coming after the sixth
Example
Her birthday is on the seventh of July.
彼女の誕生日は7月7日です。
B2 verb /stɪə(r)/

steer

操縦する
Meaning
to guide or control the movement of a vehicle, vessel, or person
Example
He steered the car carefully through the narrow street.
彼は狭い通りを慎重に車をステアしました。
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。
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。
B2 adjective /ˈstɑː.ri/

Starry

星のような; 輝く;
Meaning
full of stars; shining like stars; relating to stars
Example
We enjoyed the starry night sky while camping in the mountains.
私たちは山でキャンプしながら、星空を楽しみました。
B1 verb /siːk/

seek

求める
Meaning
to try to find or obtain something; to attempt or desire to achieve
Example
He decided to seek advice from his mentor.
彼はメンターからアドバイスを求めることに決めました。