sustainable agriculture
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C1 noun /səˈsteɪnəbl ˈæɡrɪkʌltʃər/

sustainable agriculture

agricultura sostenible
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.
Las prácticas de agricultura sostenible protegen el medio ambiente mientras garantizan la seguridad alimentaria.
A2 noun /sprɪŋ/

spring

primavera
Meaning
the season between winter and summer when plants begin to grow
Example
Flowers bloom in the spring.
Las flores florecen en la primavera.
B2 adjective /ˈskeptɪkəl/

Sceptical

escéptico; desconfiado; que cuestiona la verdad de algo
Meaning
having doubts; not easily convinced; questioning the truth of something
Example
Many scientists remain sceptical about the new theory.
Muchos científicos siguen siendo escépticos sobre la nueva teoría.
C1 noun /sɪˈnɪləti/

senility

senilidad
Meaning
The state of being old and showing the weaknesses of age, especially mental decline.
Example
His forgetfulness was attributed to senility.
Su olvido fue atribuido a la senilidad.
C1 verb /smɪr/

smear

untar / difamar
Meaning
to spread or apply a substance messily; to damage someone's reputation with false or unfair words
Example
The child smeared paint across the wall.
El niño untó pintura en la pared.
C1 adjective /suːˈpɜːr.flu.əs/

superfluous

superfluo
Meaning
Unnecessary, especially through being more than enough.
Example
His speech contained too many superfluous details.
Su discurso contenía demasiados detalles superfluos.
B1 adjective /sɪɡˈnɪfɪkənt/

significant

significativo
Meaning
Sufficiently great or important to be worthy of attention; noteworthy.
Example
Social media has a significant impact on relationships.
Las redes sociales tienen un impacto significativo en las relaciones.
B2 adjective /ˈsoʊ.vi.ət/

soviet

soviético
Meaning
relating to the Soviet Union or its government
Example
The Soviet era saw significant changes in Eastern Europe.
La era soviética vio cambios significativos en Europa del Este.
C1 noun /ˈʃrɪŋkɪdʒ/

shrinkage

encogimiento
Meaning
The process of becoming smaller in size, amount, or value.
Example
The company reported a shrinkage in profits this quarter.
La empresa reportó un encogimiento en las ganancias de este trimestre.
C1 noun /ˈsɔː.dʌst/

sawdust

aserrín
Meaning
The tiny particles of wood produced by sawing or sanding.
Example
The floor was covered with sawdust from the carpentry work.
El suelo estaba cubierto con aserrín del trabajo de carpintería.
C1 noun stɔːrm ɪnˌtensɪfɪˈkeɪʃən

storm intensification

intensificación de la tormenta
Meaning
The process by which storms become stronger and more severe in intensity.
Example
Storm intensification is linked to climate change.
La intensificación de la tormenta está vinculada al cambio climático.
C1 adjective /ˈsɛnʃuəs/

sensuous

sensual
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.
El jardín estaba lleno de colores y fragancias sensuales.
A2 noun /ˈsoʊldʒərz/

soldiers

soldados
Meaning
members of an army who serve their country in war or peace
Example
The soldiers marched proudly down the street.
Los soldados marcharon orgullosamente por la calle
C1 noun /ˈsʌtlti/

subtlety

sutileza
Meaning
The quality or state of being subtle.
Example
She understood the subtlety of the situation.
Ella entendió la sutileza de la situación.
B2 noun sɛlf rɪˈlaɪ.əns

self-reliance

autosuficiencia
Meaning
Reliance on one's own powers and resources rather than those of others; independence.
Example
Self-reliance helps build confidence.
La autosuficiencia ayuda a construir confianza.
A2 adverb /ˈʃʊə.li/

Surely

seguramente
Meaning
without doubt; certainly
Example
You will surely pass the exam if you study hard.
Seguramente aprobarás el examen si estudias mucho.
C2 verb /ˈsɛreɪt/

serrate

hacer un borde aserrado
Meaning
To make a saw-toothed edge or notched margin.
Example
The craftsman serrated the knife blade for better cutting.
El artesano serró la hoja del cuchillo para un mejor corte.
C1 adjective /səˈriːn/

serene

sereno y pacífico
Meaning
Calm, peaceful, and untroubled; tranquil.
Example
The lake had a serene and peaceful atmosphere.
El lago tenía una atmósfera serena y pacífica.
C1 noun /ˈskrɪmɪdʒ/

scrimmage

partido de práctica
Meaning
A practice game or informal match, often in sports, especially football.
Example
The team had a scrimmage before the official season started.
El equipo tuvo un partido de práctica antes de que comenzara la temporada oficial.
C1 adjective ˌsɪn.əˈdʒɪs.tɪk

synergistic

sinérgico
Meaning
Relating to the interaction of elements that when combined produce a greater effect than the sum of their individual effects.
Example
A synergistic effect occurs when nutrients work together.
Un efecto sinérgico ocurre cuando los nutrientes trabajan juntos.
B2 verb /səˈluːt/

salute

saludar
Meaning
to greet with respect; to honor
Example
The soldiers saluted their commanding officer.
Los soldados saludaron a su oficial al mando.
B1 adjective ˈʃɔːrt.tɜːrm

short-term

a corto plazo
Meaning
Occurring over or involving a relatively short period of time.
Example
Investing in stocks can yield short-term profits.
Invertir en acciones puede generar ganancias a corto plazo.
C1 verb /ˈskʌr.i/

scurry

correr rápidamente
Meaning
To move quickly with short, hurried steps.
Example
The mice scurried across the kitchen floor when the lights turned on.
Los ratones corrieron rápidamente por el suelo de la cocina cuando las luces se encendieron.
C1 noun /ˈskæf.əld/

Scaffold

andamio
Meaning
a temporary structure used by workers to stand on when building or repairing something high; a platform for execution
Example
The workers erected a scaffold to paint the building's exterior.
Los trabajadores erigieron un andamio para pintar el exterior del edificio.
B2 noun ˈsiːzənəl ˈvedʒtəbəlz

seasonal vegetables

verduras de temporada
Meaning
Vegetables that grow during specific seasons or times of the year
Example
Seasonal vegetables grow abundantly in winter.
Las verduras de temporada crecen abundantemente en invierno.
B2 noun /slɒt/

slot

ranura
Meaning
a narrow opening into which something fits or is placed
Example
Insert the card into the slot to open the door.
Inserta la tarjeta en la ranura para abrir la puerta.
C1 verb /sleɪ/

slay

matar
Meaning
to kill violently; informally, to impress greatly
Example
The hero vowed to slay the dragon.
El héroe juró matar al dragón.
C1 adjective /ˌsɛlf əbˈzɔːrbd/

self-absorbed

egocéntrico
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.
Estaba demasiado egocéntrico para notar la angustia de su amigo.
B2 adjective /ˈskɛptɪkəl/

skeptical

escéptico
Meaning
not easily convinced; having doubts or reservations
Example
She was skeptical about the new plan.
Ella era escéptica sobre el nuevo plan.
C2 noun /ˈsʌbtərˌfjuːdʒ/

subterfuge

subterfugio
Meaning
Deceit used to achieve one's goal; a trick or excuse to evade something.
Example
They used subterfuge to avoid paying taxes.
Usaron subterfugio para evitar pagar impuestos.
C1 adjective /sɔɪld/

soiled

sucio
Meaning
dirty or stained; not clean
Example
His clothes were soiled after playing in the mud.
Su ropa estaba sucia después de jugar en el barro.
B1 noun/verb /skeɪl/

scale

escala / aumentar el tamaño
Meaning
A system of ordered marks used for measurement; also means to climb or to adjust in size.
Example
The company plans to scale its operations globally.
La empresa planea escalar sus operaciones globalmente.
A2 verb /siːm/

seem

parecer
Meaning
to give the impression of being something or having a particular quality
Example
He seems tired after the long journey.
Parece cansado después del largo viaje.
C2 noun /ˈʃɑːdənfrɔɪdə/

schadenfreude

placer derivado de la desgracia ajena
Meaning
pleasure derived from another person's misfortune
Example
He felt a sense of schadenfreude when his rival failed.
Sintió una sensación de schadenfreude cuando su rival fracasó.
A2 noun ˈsaɪəns

science

ciencia
Meaning
The intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.
Example
Science continues to explore the unknown.
La ciencia sigue explorando lo desconocido.
C2 adjective /ˈswɔːrði/

swarthy

moreno
Meaning
Having a dark complexion or skin tone.
Example
The sailor had a swarthy face from years under the sun.
El marinero tenía la cara morena después de años bajo el sol.
C2 adjective /ˈsɛrid/

serried

agrupado
Meaning
pressed or crowded together, often in rows or ranks
Example
The soldiers stood in serried ranks, ready for inspection.
Los soldados estaban en filas agrupadas, listos para la inspección.
C1 noun /ˈstjuːpər/

stupor

estupor
Meaning
a state of near-unconsciousness or insensibility
Example
He remained in a stupor after hearing the shocking news.
Él permaneció en un estupor después de escuchar la noticia impactante.
C1 verb sɪˈkwɛstər

sequester

aislar, esconder
Meaning
To isolate or hide away.
Example
The carbon captured by trees can be sequestered for years.
El carbono capturado por los árboles puede ser aislado durante años.
B2 adjective /ˈstɑːrtəld/

startled

sobresaltado
Meaning
suddenly shocked or surprised by something unexpected
Example
She was startled by the loud noise outside.
Ella se sobresaltó por el ruido fuerte afuera.
C1 verb /strʌt/

strut

caminar con arrogancia
Meaning
to walk with a stiff, proud, and confident gait, often to show off
Example
He strutted across the stage after winning the award.
Él caminó por el escenario después de ganar el premio.
C1 adjective /ˌsuː.pəˈsɒn.ɪk/

Supersonic

más rápido que la velocidad del sonido; relacionado con velocidades mayores que la del sonido
Meaning
faster than the speed of sound; relating to speeds greater than the speed of sound
Example
The supersonic jet broke the sound barrier.
El avión supersónico rompió la barrera del sonido.
B2 noun /soʊp keɪs/

Soap case

caja de jabón
Meaning
a container used to store soap
Example
She bought a beautiful soap case for the bathroom.
Ella compró una hermosa caja de jabón para el baño.
C1 noun/verb /ˈsuː.tʃər/

suture

sutura
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.
El doctor usó una sutura para cerrar la herida.
A2 adjective /sɪksθ/

sixth

sexto
Meaning
coming after the fifth in order, position, or rank
Example
He finished the race in sixth place.
Terminó la carrera en sexto lugar.
C2 noun /ˌsɪləbɪˈkeɪʃən/

syllabication

silabeación
Meaning
The division of words into syllables.
Example
Proper syllabication helps in correct pronunciation.
Una correcta silabeación ayuda a una pronunciación correcta.
A2 adjective /ˈsʌðərn/

southern

del sur
Meaning
located in or facing the south; southern regions
Example
She moved to a southern city for work.
Se mudó a una ciudad del sur por trabajo.
C2 adjective /ˌsʌb.əˈkwɒt.ɪk/

subaquatic

subacuático
Meaning
Existing, living, or located under water.
Example
Divers explored the subaquatic cave system filled with rare fish.
Los buzos exploraron el sistema de cavernas subacuáticas llenas de peces raros.
B2 noun ˈsuː.pər.fuːdz

superfoods

superalimentos
Meaning
Nutrient-dense foods that are particularly beneficial for health and well-being.
Example
Blueberries and spinach are superfoods rich in vitamins.
Los arándanos y las espinacas son superalimentos ricos en vitaminas.
C1 noun /ˈʃær.ən fruːt/

Sharon fruit

fruta shéron
Meaning
a sweet orange persimmon fruit that can be eaten when firm
Example
The Sharon fruit is sweet and can be eaten like an apple.
la fruta shéron es dulce y se puede comer como una manzana.
B2 noun /səˈspɪʃən/

Suspicion

sospecha
Meaning
a feeling or thought that someone is guilty of an illegal or dishonest activity
Example
The police arrested him on suspicion of theft.
La policía lo arrestó por sospecha de robo.
C2 noun /ˌsuːpərɪnˈtɛndəns/

superintendence

supervisión
Meaning
the act of overseeing, supervising, or managing
Example
The superintendence of the school is the principal’s duty.
La supervisión de la escuela es deber del director.
C1 adjective /ˈstrɪndʒənt/

stringent

estricto
Meaning
strict, precise, and exacting
Example
The government imposed stringent measures during the crisis.
El gobierno impuso medidas estrictas durante la crisis.
B2 verb /spɪl/

spill

derramar
Meaning
to cause liquid to flow or fall out of a container by accident
Example
Be careful not to spill your coffee.
Ten cuidado de no derramar tu café.
C2 adjective /ˈstɒlɪd/

stolid

calmo, imperturbable
Meaning
Calm, dependable, and showing little emotion or animation.
Example
Despite the chaos around him, he remained stolid and composed.
A pesar del caos a su alrededor, permaneció tranquilo y sereno.
B2 verb /səʊ/

sew

felicidad
Meaning
to join pieces of fabric or material together using a needle and thread
Example
She learned to sew her own clothes at an early age.
Ella no pudo ocultar su felicidad cuando recibió el premio.
A1 verb /sɪt/

sit

sentarse
Meaning
to rest in a seated position; to be located
Example
Please sit down and make yourself comfortable.
Por favor, siéntate y hazte cómodo.
B1 noun /soʊl/

Soul

alma
Meaning
the spiritual or immaterial essence of a human being or animal; a person's emotional or intellectual nature
Example
She poured her heart and soul into her artwork.
Ella vertió su corazón y alma en su obra de arte.
C2 noun /ˈspæŋɡəl/

spangle

adornos brillantes
Meaning
A small shiny piece of metal or plastic used for decoration on clothes.
Example
Her dress was covered with silver spangles that glittered in the light.
Su vestido estaba cubierto de adornos brillantes plateados que brillaban a la luz.
C1 /skwɒt/

squat

agacharse
Meaning
to crouch or sit with knees bent and body close to the ground
Example
He squatted down to tie his shoes.
Se agachó para atarse los zapatos.
B2 noun /ˈswiː.pər/

Sweeper

barrendero
Meaning
a person whose job is to clean floors and streets by sweeping
Example
The sweeper cleaned the school corridor every morning.
El barrendero limpiaba el pasillo de la escuela todas las mañanas.
B1 verb /stæmp/

stamp

estampar / pisotear
Meaning
To bring down (one's foot) heavily on the ground; to imprint a mark or seal.
Example
She stamped her foot in frustration.
Ella estampó su pie por frustración.
C1 adjective /ˈspraɪtli/

sprightly

vivaz
Meaning
full of energy and life; lively
Example
The sprightly old man danced with joy at the wedding.
El hombre vivaz bailó con alegría en la boda.
B2 adverb /ˈsiː.mɪŋ.li/

seemingly

aparentemente, aparentemente tranquilo
Meaning
appearing to be true, but not necessarily so
Example
He was seemingly calm despite the chaos around him.
Él estaba aparentemente tranquilo a pesar del caos a su alrededor.
B2 noun /ˈsɪnənɪm/

Synonym

sinónimo
Meaning
a word or phrase that means exactly or nearly the same as another word or phrase in the same language
Example
Happy and joyful are synonyms.
Feliz y alegre son sinónimos.
B2 adjective /səˈbɜːrbən/

suburban

suburbano
Meaning
relating to or characteristic of a suburb or the people living there
Example
They bought a house in a quiet suburban area.
Compraron una casa en una zona suburbana tranquila.
C2 noun /ˈslæt.ən/

slattern

mujer descuidada
Meaning
a woman who is untidy or slovenly in appearance or habits
Example
The house looked as if a slattern lived there.
La casa parecía como si una mujer descuidada viviera allí.
C2 verb /ˌsuːpərˈæn.ju.eɪt/

superannuate

jubilar con pensión
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.
La empresa decidió jubilar con pensión a sus empleados senior después de treinta años de servicio.
B1 adjective /ˈsuːtəbl/

suitable

adecuado
Meaning
appropriate or right for a particular person, purpose, or situation
Example
This dress is suitable for the wedding.
Este vestido es adecuado para la boda.
C1 verb /ˈstæɡ.neɪt/

stagnate

estancarse
Meaning
to stop developing, progressing, or moving
Example
Without innovation, the business will stagnate.
sin innovación, el negocio se estancará.
C1 verb /ˈʃʌdər/

shudder

temblar
Meaning
to tremble or shake suddenly, often due to fear, cold, or strong emotion
Example
She shuddered at the thought of walking alone in the dark forest.
Ella se estremeció al pensar en caminar sola en el oscuro bosque.
C2 noun /ˈspuːnərɪzəm/

spoonerism

espúnarismo
Meaning
A verbal error in which the initial sounds of words are swapped to create a humorous effect.
Example
He made a spoonerism by saying 'queer old dean' instead of 'dear old queen'.
Hizo un espúnarismo al decir 'querido viejo dean' en lugar de 'querida vieja reina'.
C1 adjective /ˌsʌb.təˈreɪ.ni.ən/

subterranean

subterráneo
Meaning
Existing, occurring, or done under the earth's surface.
Example
Subterranean water sources help sustain agriculture.
Las fuentes de agua subterráneas ayudan a sostener la agricultura.
B2 adverb /ˈstrɪktli/

strictly

estrictamente
Meaning
in a way that follows rules or limits completely
Example
Smoking is strictly prohibited inside the building.
Fumar está estrictamente prohibido dentro del edificio.
B2 noun /ˈsloʊɡən/

slogan

eslogan
Meaning
a short and memorable phrase used to promote a cause or product
Example
The campaign used a powerful slogan to inspire people.
La campaña utilizó un eslogan poderoso para inspirar a la gente.
A1 verb /seɪ/

say

decir
Meaning
to speak words; to express something in words
Example
She said hello to me.
Ella me dijo hola.
B2 noun/verb /ˈsoʊ.ɪŋ/

sewing

costura
Meaning
The activity or skill of joining fabric using a needle and thread
Example
She enjoys sewing her own clothes on weekends.
Ella disfruta cosiendo su propia ropa los fines de semana.
C2 noun /ˈstætɪks/

statics

estática
Meaning
The branch of mechanics dealing with bodies at rest and forces in equilibrium.
Example
She is studying statics as part of her engineering course.
Ella está estudiando estática como parte de su curso de ingeniería.
B2 noun /ˈsɪmpəθi/

Sympathy

simpatía
Meaning
feelings of pity and sorrow for someone else's misfortune
Example
She expressed her sympathy for the victims of the accident.
Ella expresó su simpatía por las víctimas del accidente.
A2 noun /soʊp/

Soap

jabón
Meaning
a cleaning agent made from fats or oils and used for washing
Example
Please wash your hands with soap and water.
Por favor, lávese las manos con jabón y agua.
C1 noun /stæɡˈneɪ.ʃən/

stagnation

estancamiento
Meaning
A state of inactivity or lack of growth, especially in an economy.
Example
High unemployment led to economic stagnation.
El alto desempleo condujo al estancamiento económico.
B2 adjective /ˈslʌɡ.ɪʃ/

Sluggish

lento; torpe; inactivo
Meaning
slow-moving; lacking energy or alertness; inactive
Example
The old computer became sluggish after running for hours.
El viejo ordenador se volvió lento después de funcionar durante horas.
C1 adjective /ˈsɛptɪk/

septic

infectado
Meaning
Infected with harmful bacteria; relating to or causing infection.
Example
The doctor treated the patient's septic wound immediately.
El doctor trató la herida séptica del paciente de inmediato.
B2 noun/verb /ˈsɜːveɪ/

survey

encuesta, sondeo
Meaning
noun: an examination or inspection; verb: to examine or measure (an area or subject)
Example
They conducted a survey to understand customer preferences.
Realizaron una encuesta para entender las preferencias de los clientes.
A2 verb /ˈsetəl/

settle

establecerse
Meaning
to resolve; to establish residence; to calm down
Example
They decided to settle in a quiet village.
Ellos decidieron asentarse en un pueblo tranquilo.
B2 noun /siːdʒ/

Sieze

asedio
Meaning
a military operation to capture a place by surrounding it and cutting off supplies
Example
The siege of the castle lasted for three months.
El asedio del castillo duró tres meses.
B2 adjective /skeərs/

Scarce

raro; difícil de encontrar; existente en pequeñas cantidades
Meaning
rare; not easily found; existing in small quantities
Example
Fresh water is becoming increasingly scarce in desert regions.
El agua fresca se está volviendo cada vez más escasa en las regiones desérticas.
B2 adjective /ˈstɪki/

sticky

pegajoso
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.
El caramelo es demasiado pegajoso para comer con las manos.
C1 adjective /sɪˈmɛtrɪkəl/

symmetrical

simétrico
Meaning
having parts on either side that match or are the same in shape, size, or arrangement
Example
The artist designed a symmetrical pattern on the floor.
El artista diseñó un patrón simétrico en el suelo.
B2 noun /ˈsikwəns/

Sequence

secuencia
Meaning
a particular order in which related events, movements, or things follow each other; a set of related events, movements, or things that follow each other in a particular order
Example
The dance sequence was perfectly choreographed.
La secuencia de baile fue perfectamente coreografiada.
C2 adjective /ˈslɪpʃɒd/

slipshod

desordenado, negligente
Meaning
done in a careless, sloppy, or untidy way
Example
The project failed due to slipshod planning.
El proyecto fracasó debido a la planificación desordenada.
C1 noun /sɪlk klɔːθ/

Silk cloth

tela de seda
Meaning
fabric made from natural fibers produced by silkworms
Example
The bride wore a beautiful dress made of silk cloth.
La novia llevaba un hermoso vestido hecho de tela de seda.
B2 verb /skriːtʃ/

screech

hacer un ruido fuerte y agudo
Meaning
to make a loud, high-pitched and unpleasant sound
Example
The car screeched to a halt.
El coche chirrió y se detuvo de golpe.
C2 adjective /ˌstaʊtˈhɑːrtɪd/

stouthearted

valiente
Meaning
Brave, determined, and courageous
Example
The stouthearted soldier never gave up.
El soldado valiente nunca se rindió.
C2 noun ˌsʌb.dʒʊˈɡeɪ.ʃən

subjugation

subyugación o dominación
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.
La subyugación de naciones más débiles por parte de potencias coloniales dio forma a la historia.
C1 verb /sɪˈsiːd/

secede

secesionar
Meaning
To formally withdraw from a political or organizational union.
Example
Several states threatened to secede from the union.
Varios estados amenazaron con separarse de la unión.
C2 noun /ˈsɛnʃəns/

sentience

sentiencia
Meaning
The capacity to feel, perceive, or experience subjectively.
Example
Many argue that animals possess sentience.
Muchos argumentan que los animales poseen sentiencia.
A1 verb /seɪv/

save

salvar, ahorrar
Meaning
to rescue from danger; to keep for future use
Example
It's important to save money for emergencies.
Es importante ahorrar dinero para emergencias.
C1 noun /ˈsɒnɪt/

sonnet

soneto
Meaning
A poem of 14 lines using formal rhyme schemes, often about love.
Example
Shakespeare wrote many famous sonnets about love and beauty.
Shakespeare escribió muchos sonetos famosos sobre el amor y la belleza.
B1 verb /spred/

spread

esparcir
Meaning
to extend over a larger area; to distribute; to apply
Example
The news spread quickly through the town.
La noticia se esparció rápidamente por el pueblo.
C1 noun /ˈsʌn.stroʊk/

Sunstroke

golpe de calor
Meaning
a serious condition caused by overheating from prolonged exposure to high temperatures
Example
The worker suffered from sunstroke after working outside all day.
El trabajador sufrió un golpe de calor después de trabajar afuera todo el día.
B2 noun /ˈspɛk.tə.kəl/

spectacle

espectáculo
Meaning
An impressive display or performance for viewers.
Example
The fireworks created a breathtaking spectacle in the night sky.
Los fuegos artificiales crearon un espectáculo impresionante en el cielo nocturno.
B2 adjective /sɔːr/

sore

dolorido
Meaning
painful or aching, usually in a specific part of the body
Example
After the long run, my legs were sore.
Después de la carrera larga, mis piernas estaban doloridas.
B2 adjective /ˈsɛkʃʊəl/

sexual

sexual
Meaning
relating to the instincts, physiological processes, and activities connected with physical attraction or intimate physical contact between individuals
Example
The sexual health of individuals is an important topic in modern medicine.
La salud sexual de las personas es un tema importante en la medicina moderna.
C1 verb ˈsɪŋ.krə.naɪz

synchronize

sincronizar
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.
Los bailarines necesitan sincronizar sus movimientos.
B2 verb /skrʌb/

scrub

frotar
Meaning
To rub hard so as to clean, typically with a brush and water.
Example
Excessive scrubbing of the eyes is harmful.
Frotarse excesivamente los ojos es perjudicial.
C1 noun ˈstræt.ə.sfɪər

stratosphere

estratósfera
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.
La estratósfera proporciona un entorno único.
C2 noun /ˈʃʊərəti/

surety

garantía
Meaning
a person who takes responsibility for another's performance of an undertaking, such as appearing in court or paying a debt
Example
The landlord required a surety before renting the apartment.
El arrendador requirió una garantía antes de alquilar el apartamento.
B2 noun /ˈsɪləbəs/

syllabus

plan de estudios
Meaning
An outline or summary of topics to be covered in a course of study.
Example
The professor handed out the syllabus on the first day of class.
El profesor entregó el plan de estudios el primer día de clase.
C2 adjective /ˈspiːʃəs/

specious

falaz
Meaning
Superficially plausible but actually false; misleading in appearance.
Example
The politician’s argument was specious, sounding convincing but lacking real evidence.
El argumento del político era falaz, sonaba convincente pero carecía de pruebas reales.
B1 noun /ˈsiː.hɔːrs/

Sea-horse

caballo marino
Meaning
a small marine fish with segmented bony armor, an upright posture, and a curled prehensile tail
Example
The seahorse gracefully floated among the coral reefs.
El caballo marino flotó graciosamente entre los arrecifes de coral.
B2 noun /skoʊp/

scope

alcance
Meaning
the range of one's perception, understanding, or activity
Example
The project is beyond the scope of our resources.
El proyecto está más allá del alcance de nuestros recursos.
C1 adjective /ˈsɒnɪk/

sonic

sonico
Meaning
Relating to or involving sound waves or speed of sound.
Example
The jet created a loud boom when it broke the sonic barrier.
El jet creó un fuerte estruendo cuando rompió la barrera sónica.
B2 verb /swer/

swear

jurar; maldecir; prometer solemnemente
Meaning
to use offensive language; to promise solemnly; to take an oath
Example
I swear to tell the truth.
Juro decir la verdad.
B2 adverb /ˈsmuːð.li/

Smoothly

suavemente; sin problemas
Meaning
without problems or difficulties; in an even and regular way
Example
The car runs smoothly on the new highway.
El coche circula suavemente por la nueva carretera.
C1 noun /ˈstrɑːtəm/

stratum

estrato
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.
La capa superior de la sociedad disfrutaba de privilegios que no estaban disponibles para los demás.
C2 noun /ˈsɔː.dər/

Sawder

adulación; halagos falsos
Meaning
flattering or wheedling talk; soft soap
Example
His sawder couldn't convince anyone of his sincerity.
Su adulación no pudo convencer a nadie de su sinceridad.
B2 adjective səˈsteɪ.nə.bəl

sustainable

sostenible
Meaning
Able to be maintained at a certain rate or level; conserving an ecological balance.
Example
Sustainable practices mitigate environmental impact.
Las prácticas sostenibles mitigan el impacto ambiental.
C1 verb /splaɪs/

splice

unir
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.
El técnico unió los dos cables para restaurar la conexión.
C2 adjective /splɪˈnɛtɪk/

splenetic

irritable, malhumorado
Meaning
bad-tempered, irritable, spiteful
Example
His splenetic remarks offended everyone in the room.
Sus comentarios iracundos ofendieron a todos en la sala.
C1 adjective /ˈspʌndʒi/

Spongy

esponjoso
Meaning
soft and full of holes like a sponge; porous
Example
The cake had a light and spongy texture.
El pastel tenía una textura ligera y esponjosa.