streak
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B2 noun, verb /striːk/

streak

rastro o línea; moverse rápidamente en una dirección especificada
Meaning
a long, thin line or mark; to move very quickly in a specified direction
Example
Lightning streaked across the night sky.
El rayo cruzó el cielo nocturno.
B2 noun /ˈsɑːrdʒənt/

sergeant

sargento
Meaning
A rank of non-commissioned officer in the armed forces or police.
Example
The sergeant gave orders to the soldiers before the mission.
El sargento dio órdenes a los soldados antes de la misión.
A1 pronoun /ˈsʌmθɪŋ/

something

algo
Meaning
an unspecified or unknown thing
Example
I think something is wrong with my phone.
Creo que algo está mal con mi teléfono.
A2 noun /ˈstændərd/

standard

estándar
Meaning
a level of quality or achievement, or a measure of comparison
Example
This car meets all the safety standards.
Este coche cumple con todos los estándares de seguridad.
A1 noun /saɪd/

side

lado
Meaning
a position to the left or right of something
Example
The store is on the side of the road.
La tienda está en el lado de la carretera.
B2 noun /ˈsɛm.ɪ.nɑːr/

seminar

seminario
Meaning
A meeting for discussion or training, especially in an academic setting.
Example
The professor invited all students to attend the seminar on climate change.
El profesor invitó a todos los estudiantes a asistir al seminario sobre cambio climático.
B2 adjective ˌsɪm.əlˈteɪ.ni.əs

simultaneous

simultáneo
Meaning
Occurring, operating, or done at the same time.
Example
Simultaneous crop failures affect global food supply.
Las fallas simultáneas de los cultivos afectan el suministro global de alimentos.
B2 adjective ˈskɒl.ə.li

scholarly

erudito
Meaning
Having or showing great knowledge or learning; academic in approach or method.
Example
He wrote a scholarly article on ancient philosophy.
Escribió un artículo erudito sobre la filosofía antigua.
C1 adverb spɒnˈteɪnɪəsli

spontaneously

espontáneamente
Meaning
In a spontaneous way; naturally and without planning or external cause.
Example
Children learn spontaneously through peer interactions.
Los niños aprenden espontáneamente a través de interacciones entre compañeros.
A1 adjective /stɪl/

still

tranquilo
Meaning
not moving or making a sound
Example
The water was still, reflecting the sky.
El agua estaba tranquila, reflejando el cielo.
C2 verb /ʃʌk/

shuck

pelar
Meaning
To remove the outer covering, such as the husk of corn or shell of shellfish.
Example
She learned how to shuck oysters quickly.
Ella aprendió a pelar ostras rápidamente.
A1 noun /sʌn/

son

hijo
Meaning
a male child of a parent
Example
His son is very talented in music.
Su hijo es muy talentoso en la música.
C1 adjective /steɪd/

staid

serio, respetable
Meaning
Serious, respectable, and unadventurous.
Example
He came from a staid family background.
Él vino de una familia seria.
B1 noun /ˈsoʊ.lər ˌsɪs.təm/

Solar system

sistema solar
Meaning
the sun and all the planets, moons, asteroids and other objects that orbit around it
Example
Our solar system has eight planets orbiting the sun.
Nuestro sistema solar tiene ocho planetas orbitando alrededor del sol.
A1 adverb /ˈsʌm.taɪmz/

Sometimes

a veces
Meaning
at times; occasionally; now and then
Example
Sometimes I go for a walk in the evening.
A veces doy un paseo por la tarde.
C2 verb /ˌsuːpərˈhiːt/

superheat

sobrecalentar
Meaning
to heat a substance beyond its normal boiling point without it becoming vapor
Example
Engineers superheat the steam to increase the efficiency of the turbine.
Los ingenieros sobrecalientan el vapor para aumentar la eficiencia de la turbina.
B1 noun /ˌsaʊθˈwɛst/

southwest

suroeste
Meaning
the direction that is between south and west; a region in that direction
Example
They traveled to the southwest of the country for their vacation.
Viajaron al suroeste del país para sus vacaciones.
C1 noun /ˈskeɪ.biːz/

Scabies

sarna
Meaning
a contagious skin disease caused by mites that causes intense itching
Example
The doctor diagnosed him with scabies after examining the rash.
El doctor le diagnosticó sarna después de examinar la erupción.
C1 adjective /sɪˈnɒnɪməs/

synonymous

sinónimo
Meaning
having the same or nearly the same meaning; closely associated with something
Example
For many people, her name is synonymous with generosity.
Para muchas personas, su nombre es sinónimo de generosidad.
B2 adjective /səkˈsɛsɪv/

Successive

sucesivo; consecutivo
Meaning
following one after the other in order; consecutive
Example
The team won three successive matches.
El equipo ganó tres partidos consecutivos.
B1 noun /ˈsʌməri/

summary

resumen
Meaning
A brief statement of the main points of something.
Example
She wrote a summary of the book for her class.
Ella escribió un resumen del libro para su clase.
C2 noun /skʌlˈdʌɡəri/

skulduggery

engaño
Meaning
underhanded or dishonest behavior
Example
The politician was accused of financial skulduggery.
El político fue acusado de estafa financiera.
B1 noun /ˈspɪr.ɪt/

Spirit

espíritu; alma; entusiasmo; coraje
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.
El equipo mostró un gran espíritu a pesar de perder el partido.
A1 adjective /ˈsɪmpəl/

Simple

fácil; simple; sin complicaciones
Meaning
easy to understand or do; not complicated
Example
This is a simple recipe that anyone can follow.
Esta es una receta fácil que cualquiera puede seguir.
C1 verb /səbˈdjuː/

subdue

someter
Meaning
To bring under control, especially by force; to overcome or quiet.
Example
The army was able to subdue the rebellion quickly.
El ejército pudo someter la rebelión rápidamente.
B2 noun /ˈsɪnˌdroʊm/

syndrome

síndrome
Meaning
a group of symptoms that occur together and characterize a condition or disease
Example
Down syndrome affects a person's physical and mental development.
El síndrome de Down afecta el desarrollo físico y mental de una persona.
C1 noun /ˈskɛptɪk/

skeptic

escéptico
Meaning
A person who doubts or questions accepted beliefs or claims.
Example
The scientist was a skeptic of theories without solid evidence.
El científico era escéptico de las teorías sin evidencia sólida.
B2 noun /ˌsɛlf rɪˈspɛkt/

self-respect

autoestima
Meaning
A feeling of pride and confidence in oneself; self-worth.
Example
She refused to compromise her self-respect by accepting unfair treatment.
Ella se negó a comprometer su autoestima aceptando un trato injusto.
B1 noun /ˈsʌb.stəns/

Substance

sustancia
Meaning
a particular kind of matter with uniform properties; the essential nature of something; material or content
Example
The scientist analyzed the unknown substance in the laboratory.
El científico analizó la sustancia desconocida en el laboratorio.
A2 noun /staɪl/

Style

estilo
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.
Ella tiene su propio estilo único de escribir que cautiva a los lectores.
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.
A1 noun /sɛpˈtɛmbər/

september

septiembre
Meaning
The ninth month of the year in the Gregorian calendar
Example
My birthday is in September, and I always celebrate it with friends.
Mi cumpleaños es en septiembre, y siempre lo celebro con amigos.
C1 adjective ˌsɪmbɪˈɒtɪk

symbiotic

simbiótico
Meaning
Involving interaction between two different organisms living in close physical association.
Example
The relationship between the bee and the flower is symbiotic.
La relación entre la abeja y la flor es simbiótica.
A2 proper noun /ˌsaʊθ əˈmɛrɪkə/

south america

América del Sur
Meaning
a continent located in the Western Hemisphere, mostly in the Southern Hemisphere
Example
Brazil is the largest country in South America.
Brasil es el país más grande de América del Sur.
C1 /ʃrɛd/

shred

triturar
Meaning
to tear or cut something into small pieces
Example
She shredded the old documents before throwing them away.
Ella trituró los viejos documentos antes de tirarlos.
C1 noun speɪst ˌrep.ɪˈtɪʃ.ən

spaced repetition

repetición espaciada
Meaning
A learning technique that involves reviewing information at increasing intervals to improve long-term retention.
Example
Spaced repetition helps in long-term memory retention.
La repetición espaciada ayuda a retener la memoria a largo plazo.
B2 verb /skɪm/

skim

leer rápidamente
Meaning
to move quickly over a surface or to read something quickly
Example
She skimmed through the report before the meeting.
Ella pasó rápidamente por el informe antes de la reunión.
C1 verb /səbˈsaɪd/

subside

disminuir
Meaning
to become less intense, violent, or severe; to sink or fall to a lower level
Example
After the storm, the floodwaters began to subside.
Después de la tormenta, las aguas de la inundación comenzaron a disminuir.
C1 noun /ˈsaɪd.laɪn dɪˈskʌʃənz/

sideline discussions

discusiones secundarias
Meaning
Informal or secondary conversations that occur outside the main agenda of a formal meeting.
Example
Sideline discussions often lead to agreements.
Las discusiones secundarias a menudo conducen a acuerdos.
B2 verb /ˈsʌməraɪz/

summarize

resumir
Meaning
To give a brief statement of the main points of something
Example
She summarized the report in just a few minutes.
Ella resumió el informe en solo unos minutos.
A2 noun /spɔːt/

sport

deporte
Meaning
an activity involving physical exertion and skill in which an individual or team competes against another or others for entertainment
Example
Football is a popular sport around the world.
El fútbol es un deporte popular en todo el mundo.
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.
B1 noun /ˈsɜr.fɪs/

Surface

superficie; capa superior
Meaning
the outside part or uppermost layer of something
Example
The submarine emerged to the surface of the ocean.
El submarino emergió a la superficie del océano.
A2 adjective /ˈsɪr.i.əs/

Serious

grave; serio; importante;
Meaning
thoughtful; grave; requiring careful consideration; not joking
Example
This is a serious matter that needs immediate attention.
Este es un asunto serio que necesita atención inmediata.
B2 adjective, noun /ˈsɪŋɡjələr/

singular

extraordinario / singular
Meaning
Remarkable, extraordinary; or grammatical form referring to one person or thing.
Example
She has a singular talent for painting.
Ella tiene un talento extraordinario para la pintura.
C2 noun /stɛp/

steppe

estepa
Meaning
A large flat area of unforested grassland, especially in southeastern Europe or Siberia.
Example
The nomads traveled across the vast steppe with their herds.
Los nómadas viajaban por la vasta estepa con sus rebaños.
A1 noun /stɑːr/

Star

estrella
Meaning
a fixed luminous point in the night sky that produces light and heat through nuclear fusion
Example
Thousands of stars are visible in the clear night sky.
Miles de estrellas son visibles en el cielo despejado de la noche.
C1 noun səˈsteɪnəbəl ˈpræktɪsɪz

sustainable practices

prácticas sostenibles
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.
Las prácticas sostenibles son vitales para la preservación del medio ambiente.
C1 verb /snɪp/

snip

cortar
Meaning
to cut something quickly with scissors or a sharp tool
Example
She snipped the loose thread from her dress.
Ella cortó el hilo suelto de su vestido.
C1 adjective /ˈsliːzi/

sleazy

de mala calidad, inmoral o barato
Meaning
morally low, dirty, or cheap in quality
Example
He avoided the sleazy nightclub downtown.
Él evitó el club nocturno sórdido en el centro.
C1 noun /ʃɑːrd/

shard

fragmento
Meaning
a broken piece of glass, metal, or pottery
Example
He cut his finger on a shard of glass.
Se cortó el dedo con un fragmento de vidrio.
C1 noun ˌsteɪbəlaɪˈzeɪʃən

stabilization

estabilización
Meaning
The process of making or becoming stable.
Example
The stabilization of the structure was essential after the earthquake.
La estabilización de la estructura fue esencial después del terremoto.
C1 adjective /ˈsɛn.sər.i/

sensory

sensorial
Meaning
Related to the five human senses (sight, hearing, taste, touch, smell).
Example
Sensory feedback enhances the VR experience.
La retroalimentación sensorial mejora la experiencia de VR.
C2 noun /ˈsɑːrdʒənt ət ɑːrmz/

sergeant-at-arms

sargento de armas
Meaning
An officer responsible for maintaining order during meetings or legislative sessions.
Example
The sergeant-at-arms escorted the disruptive member out of the hall.
El sargento de armas escoltó al miembro disruptivo fuera del salón.
B2 noun /ˈsəʊ.ʃəl.ɪ.zəm/

socialism

socialismo
Meaning
An economic system where the means of production are owned by the state or community.
Example
In socialism, resources are distributed equally among citizens.
En el socialismo, los recursos se distribuyen de manera equitativa entre los ciudadanos.
A2 adjective /skaɪ bluː/

Sky-blue

azul cielo
Meaning
a bright blue color like that of a clear sky
Example
Her sky-blue eyes sparkled in the sunlight.
Sus ojos azul cielo brillaban a la luz del sol.
C1 adjective /ˌsɛm.iˈæn.ju.əl/

semiannual

semi-anual
Meaning
Occurring twice a year; every six months.
Example
The company holds a semiannual meeting with all employees.
La empresa organiza una reunión semi-anual con todos los empleados.
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.
C2 adjective /ˈsæpɪd/

sapid

sabroso
Meaning
Having a pleasant taste; flavorful.
Example
The chef prepared a sapid dish that delighted everyone at the table.
El chef preparó un plato sabroso que encantó a todos en la mesa.
B1 noun sɪˈlek.ʃən

selection

selección
Meaning
The action or fact of carefully choosing someone or something as being the best or most suitable.
Example
The selection process is based on merit.
El proceso de selección se basa en el mérito.
A2 verb /stʌk/

stuck

atascado
Meaning
unable to move; fixed in one position; unable to continue
Example
The door is stuck and won't open.
La puerta está atascada y no se abrirá.
C1 verb /ˈskruː.tɪ.naɪz/

scrutinize

examinar o inspeccionar de cerca y a fondo
Meaning
Examine or inspect closely and thoroughly.
Example
The scientist scrutinized the data before publishing his findings.
El científico examinó los datos antes de publicar sus hallazgos.
B2 verb /suː/

sue

demandar
Meaning
to bring a lawsuit against someone in a court of law
Example
She decided to sue the company for damages.
Ella decidió demandar a la empresa por daños.
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.
A1 verb /sɪŋ/

sing

cantar
Meaning
to make musical sounds with the voice
Example
She sings beautifully in the choir.
ella canta bellamente en el coro
B2 noun /sɛnˈseɪʃən/

Sensation

sensación; excitación; conmoción; sensación
Meaning
a physical feeling or perception resulting from something that happens to or comes into contact with the body; a widespread reaction of interest and excitement
Example
The new singer became an overnight sensation.
La nueva cantante se convirtió en una sensación de la noche a la mañana.
B2 adjective /ˈʃæb.i/

Shabby

desgastado; en mal estado; con signos de desgaste; injusto o cruel
Meaning
worn out; in poor condition; showing signs of wear; unfair or mean
Example
His shabby clothes showed that he had been traveling for days.
Su ropa desgastada mostraba que había estado viajando durante días.
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 adjective /ˈsɛm.ɪ.nəl/

seminal

felicidad
Meaning
Strongly influencing later developments; highly original and influential.
Example
His seminal book changed the course of modern philosophy.
No pudo ocultar su felicidad cuando recibió el premio.
C1 noun /sɪˈkriː.ʃən/

Secretion

secreción
Meaning
a process by which substances are produced and discharged from a cell or gland
Example
Insulin secretion is crucial for blood sugar regulation.
La secreción de insulina es crucial para la regulación del azúcar en sangre.
C2 adjective /ˈsʌmp.tʃuˌɛr.i/

sumptuary

relacionado con las leyes que limitan el gasto personal en artículos de lujo
Meaning
Relating to laws or regulations intended to limit personal spending on luxury goods.
Example
In medieval Europe, sumptuary laws restricted the wearing of expensive fabrics to the nobility.
En la Europa medieval, las leyes suntuarias restringían el uso de telas caras solo a la nobleza.
A2 verb /ʃaɪn/

shine

brillar
Meaning
to give out a bright light or glow
Example
The sun will shine brightly tomorrow.
El sol brillará intensamente mañana.
C1 noun /səˈnɑːtə/

sonata

composición musical (sonata)
Meaning
A musical composition for one or more instruments, typically in several movements.
Example
She performed a beautiful Beethoven sonata on the piano.
Ella interpretó una hermosa sonata de Beethoven en el piano.
C2 noun /ˈstrɪk.tʃər/

stricture

restricción, crítica
Meaning
a restriction or limitation; a critical remark
Example
The new law placed a severe stricture on free speech.
La nueva ley impuso una restricción severa a la libertad de expresión.
B2 adjective /səˈpɔːtɪv/

supportive

apoyo
Meaning
providing encouragement or emotional help to someone
Example
She was very supportive during my difficult times.
Ella fue muy supportive durante mis tiempos difíciles.
B2 adverb /ˈsoʊʃəli/

socially

socialmente
Meaning
in a way that relates to society or social interaction
Example
He is very active socially and attends many events.
Él es muy activo socialmente y asiste a muchos eventos.
C1 noun /ˌsɪmbɪˈəʊsɪs/

symbiosis

relación simbiótica
Meaning
A mutually beneficial relationship between different people or groups.
Example
The symbiosis between the two companies led to mutual growth.
La simbiosis entre las dos empresas llevó a un crecimiento mutuo.
C1 noun /səˈprɛʃən/

suppression

supresión
Meaning
the act of forcibly stopping something or holding back feelings or actions
Example
The suppression of free speech led to protests.
La supresión de la libertad de expresión llevó a protestas.
C2 noun /ˈsɪlədʒɪzəm/

syllogism

silogismo
Meaning
A form of reasoning in which a conclusion is drawn from two given or assumed premises.
Example
The philosopher explained the concept of syllogism using simple examples.
El filósofo explicó el concepto de silogismo usando ejemplos simples.
A2 adjective /sər'praɪzd/

Surprised

sorprendido
Meaning
feeling or showing surprise; astonished
Example
I was surprised to see my old friend at the market.
Me sorprendió ver a mi viejo amigo en el mercado.
C2 noun /ˈsɜːrfɪt/

surfeit

exceso
Meaning
an excessive amount of something
Example
There was a surfeit of food at the festival.
Había un exceso de comida en el festival.
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.
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.
A2 verb /səkˈsiːd/

succeed

tener éxito
Meaning
to achieve the desired aim or result; to do well
Example
She worked hard to succeed in her career.
Ella trabajó duro para tener éxito en su carrera.
C1 noun /ˈsɪməli/

simile

símil
Meaning
A figure of speech involving the comparison of one thing with another using 'like' or 'as'.
Example
She used a simile to describe her eyes as bright as stars.
Ella usó un símil para describir sus ojos tan brillantes como las estrellas.
C1 adjective /ˈstɛriəˌtaɪpt/

stereotyped

estereotipado
Meaning
Conforming to a fixed or oversimplified idea of what someone or something is like.
Example
His stereotyped jokes failed to impress the audience.
Sus chistes estereotipados no lograron impresionar a la audiencia.
B2 noun /stɑːˈveɪ.ʃən/

Starvation

inanición
Meaning
suffering or death caused by lack of food; extreme hunger
Example
Many people died of starvation during the famine.
Muchas personas murieron de inanición durante la hambruna.
B1 noun /ˈsɪɡ.nəl/

Signal

señal
Meaning
a gesture, action, or sound that conveys information or instruction
Example
The traffic signal turned red, so we stopped.
La señal de tráfico se puso roja, así que nos detuvimos.
A2 noun /ˈsiː.nər.i/

Scenery

paisaje
Meaning
the natural features of a landscape; the painted background used on a theater stage
Example
The mountain scenery was breathtakingly beautiful.
El paisaje montañoso era impresionante.
C1 noun /ˌsɛnsɪtaɪˈzeɪʃən/

sensitization

sensibilización
Meaning
The process of becoming sensitive to a substance, situation, or influence.
Example
The doctor warned about the sensitization caused by repeated exposure to chemicals.
El doctor advirtió sobre la sensibilización causada por la exposición repetida a productos químicos.
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.
B1 noun, verb /strɪŋ/

string

hilo
Meaning
a thin piece of cord or thread; to tie or fasten with a string
Example
She tied the package with a string.
Ella ató el paquete con un hilo.
A2 noun /stɔːrm/

Storm

tormenta
Meaning
a violent weather condition with strong winds, rain, thunder, and lightning
Example
The storm caused power outages across the city.
La tormenta causó apagones en toda la ciudad.
C2 noun səˈtaɪ.ə.ti

satiety

satisfacción
Meaning
The feeling of being satisfied or full, especially with regard to food.
Example
High-fiber foods provide longer satiety.
Los alimentos ricos en fibra proporcionan mayor satisfacción.
A2 verb /stɪk/

stick

pegar
Meaning
to adhere or attach something to a surface
Example
The glue will stick to the paper.
El pegamento se pegará al papel.
B2 verb /straɪv/

strive

esforzarse
Meaning
To make great efforts to achieve or obtain something.
Example
She strives to be the best student in her class.
Ella se esfuerza por ser la mejor estudiante en su clase.
B2 noun /səkˈsɛʃ.ən/

succession

sucesión ecológica
Meaning
The process of ecological change in which one community of organisms is gradually replaced by another.
Example
Forest succession occurs when old ecosystems are replaced by new ones.
La sucesión forestal ocurre cuando los ecosistemas antiguos son reemplazados por otros nuevos.
B1 noun /ˈstætʃuː/

Statue

una obra de arte tridimensional, típicamente hecha de piedra, metal o madera
Meaning
a three-dimensional work of art, typically made of stone, metal, or wood
Example
The statue of liberty is a famous landmark in New York.
La estatua de la libertad es un famoso hito en Nueva York.
B2 adjective /suːˈpɪə.ri.ər/

Superior

superior; mejor que el promedio
Meaning
higher in rank, quality, or importance; better than average
Example
This product is superior to all others in the market.
Este producto es superior a todos los demás en el mercado.
C1 adjective /ˈsæv.i/

savvy

astuto, sabio
Meaning
Having practical knowledge and the ability to make good judgments.
Example
She is a tech-savvy entrepreneur.
Ella es una emprendedora experta en tecnología.
C1 noun/verb /ˈskɜːrmɪʃ/

skirmish

escaramuza
Meaning
a small or brief fight between groups of soldiers; to engage in such a fight
Example
The soldiers got into a skirmish near the border.
Los soldados se metieron en una escaramuza cerca de la frontera.
B1 noun /ˈsæm.pəl/

Sample

muestra
Meaning
a small part taken as an example of the whole; a specimen
Example
The doctor took a blood sample for testing.
El doctor tomó una muestra de sangre para la prueba.
C2 adjective /ˌsæpəˈneɪʃəs/

saponaceous

jabonoso
Meaning
Soapy or having the qualities of soap.
Example
The plant has saponaceous leaves that produce foam when rubbed in water.
La planta tiene hojas jabonosas que producen espuma cuando se frotan en agua.
B2 adjective /stɪf/

Stiff

rígido; firme; duro
Meaning
not easily bent or changed; rigid; firm
Example
The old wooden board was too stiff to bend.
La vieja tabla de madera era demasiado rígida para doblarse.
C2 adjective /ˌsɛm.iˈkɒn.ʃəs/

semiconscious

semi-consciente
Meaning
Only partly conscious; not fully aware of surroundings.
Example
He was semiconscious after the accident and could barely respond.
Él estaba semi-consciente después del accidente y apenas podía responder.
B2 verb /ˈspɛsɪfaɪ/

specify

especificar
Meaning
to state or describe something clearly and exactly
Example
Please specify the time and place of the meeting.
Por favor, especifique la hora y el lugar de la reunión.
B1 noun /sɒk/

sock

calcetín
Meaning
a piece of clothing worn on the foot and lower part of the leg.
Example
He put on a pair of clean socks before leaving the house.
Se puso un par de calcetines limpios antes de salir de casa.
C1 verb /slɪŋ/

sling

colgar, lanzar
Meaning
to throw or hang something roughly or carelessly
Example
He slung his bag over his shoulder before leaving.
Él colgó su bolso sobre su hombro antes de salir.
C2 adjective /sɪmˈfoʊniəs/

symphonious

armonioso
Meaning
Harmonious; producing a pleasant sound or agreement of sound.
Example
The choir's voices were symphonious and filled the hall with beauty.
Las voces del coro eran armoniosas y llenaron la sala de belleza.
B1 noun /swɒn/

Swan

cisne
Meaning
a large waterbird with a long curved neck and usually white plumage
Example
The elegant swan glided silently across the water.
El elegante cisne se deslizó silenciosamente sobre el agua.
B2 noun /ˌsɪmjuˈleɪʃən/

simulation

simulación
Meaning
the imitation of a situation or process
Example
The simulation helped the students understand the complex theory.
La simulación ayudó a los estudiantes a comprender la teoría compleja.
C2 adverb /ˌsʌb ˈroʊzə/

sub rosa

en secreto
Meaning
secretly, in confidence, or in private
Example
The deal was made sub rosa to avoid public scrutiny.
El trato se hizo sub rosa para evitar el escrutinio público.
B1 verb /swɪtʃ/

switch

cambiar
Meaning
to change from one thing to another; to exchange or replace
Example
I switched from coffee to tea.
Cambié de café a té.
C2 adjective /ˈsɪlvən/

sylvan

boscosa
Meaning
Relating to or characteristic of the woods or forest.
Example
The cottage was set in a sylvan landscape full of tall trees.
La cabaña estaba situada en un paisaje boscosa lleno de árboles altos.
C1 noun /ˈsteɪl.meɪt/

stalemate

empate
Meaning
A situation in which no progress can be made or no party can win.
Example
Negotiations ended in a stalemate.
Las negociaciones terminaron en un empate.
A2 adjective /ˈsɪŋɡəl/

single

único
Meaning
only one; not one of several
Example
She bought a single ticket for the concert.
Ella compró un boleto sencillo para el concierto.
B2 noun /ˈspɒnsəʃɪp/

sponsorship

patrocinio
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.
El evento fue posible gracias al patrocinio de varias grandes empresas.
C1 noun /streɪt/

strait

estrecho
Meaning
A narrow passage of water connecting two seas or two large areas of water.
Example
The Strait of Gibraltar connects the Atlantic Ocean and the Mediterranean Sea.
El estrecho de Gibraltar conecta el océano Atlántico y el mar Mediterráneo.
C1 adjective /ˈstrɛnjuəs/

strenuous

arduo
Meaning
Requiring or using great effort and energy.
Example
Climbing the mountain was a strenuous task.
Escalar la montaña fue una tarea ardua.
B2 noun /ˈsɪmp.təmz/

symptoms

síntomas
Meaning
signs or indications of a disease or condition
Example
Fever and cough are common symptoms of the flu.
La fiebre y la tos son síntomas comunes de la gripe.
B2 noun /ˈsmɑːrt.nəs/

Smartness

inteligencia; astucia; apariencia ordenada y moderna
Meaning
intelligence; cleverness; neat and fashionable appearance
Example
Her smartness in solving problems impressed everyone.
Su inteligencia al resolver problemas impresionó a todos.