surrogate
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C1 noun /ˈsɜːrəɡət/

surrogate

sustituto
Meaning
A substitute, especially a person deputizing for another in a specific role or office.
Example
The surrogate mother gave birth to the child after carrying it for nine months.
La madre sustituta dio a luz al niño tras llevarlo durante nueve meses.
C2 verb, adjective /ˈstraɪeɪt/

striate

estriar
Meaning
to mark with stripes or grooves; striped or streaked in appearance
Example
The rock surface was striated by glacial movement.
La superficie de la roca fue estriada por el movimiento glaciar.
B2 adjective /ˈspɛʃəˌlaɪzd/

specialized

especializado
Meaning
designed or developed for a particular purpose or function
Example
He has a specialized knowledge of ancient civilizations.
Él tiene un conocimiento especializado de las civilizaciones antiguas.
C1 noun /ˈstɪklər/

stickler

persona estricta con las normas
Meaning
a person who insists on a certain quality or standard of behavior
Example
He is a stickler for punctuality and never tolerates delays.
Él es muy estricto con la puntualidad y no tolera retrasos.
B2 noun ˈsoʊʃəl rɪˌspɒnsəˈbɪləti

social responsibility

responsabilidad social
Meaning
The duty to act in ways that benefit society as a whole.
Example
Social responsibility should be part of the education curriculum.
La responsabilidad social debe ser parte del currículo educativo.
C1 verb /skɒf/

scoff

burlarse
Meaning
to speak about something in a mocking or dismissive way
Example
He scoffed at the idea of moving abroad.
Él se burló de la idea de mudarse al extranjero.
B2 noun ˌsɛlf.kənˈtrəʊl

self-control

autocontrol
Meaning
The ability to control one's emotions, behavior, and desires in order to obtain some reward, or avoid some punishment, typically in the longer term.
Example
Self-control is important for maintaining a balanced life.
El autocontrol es importante para mantener una vida equilibrada.
A1 noun/adjective /saʊθ/

south

sur
Meaning
the direction towards the bottom of a map, opposite to north
Example
The sun rises in the east and sets in the south.
El sol sale por el este y se pone por el sur.
A2 noun/verb /ˈsiːzən/

season

estación / sazonar
Meaning
One of the four periods of the year characterized by specific weather conditions; also, to add flavor to food.
Example
Spring is my favorite season of the year.
La primavera es mi estación favorita del año.
C2 adjective /stəˈkɑː.təʊ/

staccato

detallado y separado
Meaning
short and detached in sound or style, often used in music
Example
The pianist played the notes in a staccato rhythm.
El pianista tocó las notas en un ritmo estacato.
B2 noun /ˌsɛpəˈreɪʃən/

Separation

separación; división; alejamiento
Meaning
the action or state of moving or being moved apart; the division of something into constituent or distinct elements
Example
The separation of the two countries was peaceful.
La separación de los dos países fue pacífica.
C1 noun স্ক্রোলিং অ্যাডিকশন

scrolling addiction

adicción al desplazamiento
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.
La adicción al desplazamiento es una preocupación creciente entre los usuarios de teléfonos inteligentes.
B2 verb /ˈʃɔːrtn/

shorten

acortar
Meaning
To make something shorter in length, duration, or extent
Example
She decided to shorten her speech to fit the time limit.
Decidió acortar su discurso para ajustarse al límite de tiempo.
A1 noun /skuːl/

school

escuela
Meaning
An institution for educating children; also a group of people sharing the same ideas or discipline.
Example
The children walked to school together.
Los niños caminaron juntos a la escuela.
A2 adverb /ˈsɪə.ri.əs.li/

seriously

seriamente
Meaning
in a solemn or thoughtful manner
Example
She took the matter very seriously.
Ella tomó el asunto muy seriamente.
C1 noun /səˈvænə/

savanna

sabana (con árboles dispersos)
Meaning
a grassy plain with scattered trees, typical of tropical and subtropical regions
Example
Giraffes browsed on acacia trees across the wide savanna.
Las jirafas pastaban en los árboles de acacia a través de la amplia sabana.
B1 adjective /ˈsensəbəl/

Sensible

sensato; razonable; práctico
Meaning
having or showing good sense; practical and reasonable
Example
It would be sensible to take an umbrella because it might rain.
Sería sensato llevar un paraguas porque podría llover.
B2 adjective /ˈstɑː.ri/

Starry

estrellado; brillante;
Meaning
full of stars; shining like stars; relating to stars
Example
We enjoyed the starry night sky while camping in the mountains.
Disfrutamos del cielo estrellado mientras acampábamos en las montañas.
C1 verb/noun /snɑːrl/

snarl

gruñido, atasco
Meaning
to growl aggressively with bared teeth; a tangle or mess
Example
The dog snarled at the stranger near the gate.
El perro gruñó al extraño cerca de la puerta.
A1 verb /ˈstʌdi/

study

estudiar
Meaning
to learn about something; to examine carefully; to research
Example
I study mathematics every evening.
Yo estudio matemáticas todas las tardes.
B2 noun /ˈsʌb.sɪ.di/

subsidy

subsidio
Meaning
Financial assistance provided by government to reduce costs of goods or services.
Example
The government provides a fuel subsidy to control prices.
El gobierno proporciona un subsidio de combustible para controlar los precios.
B2 noun ˈʃeɪdɪd ˈɛəriə

shaded area

área sombreada
Meaning
An area that is protected from direct sunlight.
Example
We sat in a shaded area by the riverbank.
Nos sentamos en un área sombreada junto al río.
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 verb /sniːk/

sneak

moverse en secreto
Meaning
to move quietly and secretly to avoid being noticed
Example
He tried to sneak into the house without waking anyone.
Trató de colarse en la casa sin despertar a nadie.
C2 noun /sfɛˈrɪsɪti/

sphericity

esfericidad
Meaning
The quality or state of being spherical; roundness.
Example
The sphericity of the ball made it roll smoothly on the ground.
La esfericidad de la pelota permitió que rodara suavemente sobre el suelo.
A2 noun /steɪdʒ/

stage

escenario
Meaning
a raised platform or area for performances or presentations
Example
The actor stepped onto the stage to deliver his speech.
El actor subió al escenario para dar su discurso.
C2 adjective /ˈsækərɪn/

saccharine

felicidad
Meaning
Excessively sweet or sentimental.
Example
His saccharine smile seemed insincere.
No pudo ocultar su felicidad cuando recibió el premio.
C1 noun, adjective, verb /ʃæm/

sham

farsa
Meaning
something that is not what it appears to be; a false or fake thing; to pretend
Example
The deal turned out to be a sham.
El trato resultó ser una farsa.
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 verb /skæn/

scan

felicidad
Meaning
To look at something carefully or quickly; to digitally copy or capture an image or document.
Example
She scanned the document before sending it by email.
Ella no pudo ocultar su felicidad cuando recibió el premio.
C1 adjective/verb /ˈsiːzənd/

seasoned

experimentado / sazonado
Meaning
Experienced in a particular activity; also, flavored with spices.
Example
She is a seasoned teacher with over 20 years of experience.
Ella es una maestra experimentada con más de 20 años de experiencia.
C1 verb /sərˈpæs/

surpass

superar
Meaning
to exceed or go beyond
Example
Her performance surpassed all expectations.
Su rendimiento superó todas las expectativas.
C1 noun ˈsɪn.tæks

syntax

sintaxis
Meaning
The arrangement of words and phrases to create well-formed sentences in a language.
Example
Programming languages follow strict syntax rules.
Los lenguajes de programación siguen estrictas reglas de sintaxis.
C1 noun /ˈskælpəl/

scalpel

bisturí
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.
El cirujano usó cuidadosamente un bisturí para hacer la primera incisión.
C2 noun /ˈʃɪbəˌlɛθ/

shibboleth

expresión o creencia distintiva de un grupo particular
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.
La frase se convirtió en un shibboleth político durante la campaña.
A2 adjective /skɛrd/

scared

asustado
Meaning
feeling afraid or worried
Example
She was scared of the dark.
Ella tenía miedo de la oscuridad.
C2 noun /sɪlf/

sylph

sílfide
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.
Ella se movió por el escenario como una sílfide, ligera y elegante.
B1 noun /ˌsaʊθˈiːst/

southeast

sureste
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.
La ciudad está ubicada en el sureste del país.
A1 noun /ˈstɔːri/

story

historia
Meaning
a narrative of real or imaginary events
Example
She told a fascinating story about her travels.
Ella contó una fascinante historia sobre sus viajes.
C2 adjective /ˈseɪpiənt/

sapient

sabio
Meaning
Wise, or appearing to be wise.
Example
The professor gave a sapient response to the complex question.
El profesor dio una respuesta sabia a la compleja pregunta.
B2 noun /ˈsæksəfoʊn/

Saxophone

saxofón
Meaning
a wind musical instrument with a curved metal body and a single reed mouthpiece
Example
The jazz musician played a beautiful solo on his saxophone.
El músico de jazz tocó un hermoso solo en su saxofón.
C1 noun /ˈstɔːrhaʊs/

storehouse

almacén
Meaning
A place where goods, supplies, or valuables are stored; a repository
Example
The warehouse acted as a storehouse for all the imported goods.
El almacén actuaba como un storehouse para todos los productos importados.
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.
B2 adjective /ˈsoʊloʊ/

solo

solo
Meaning
performed by one person alone; a single performance
Example
She decided to perform a solo dance at the talent show.
Decidió hacer un baile solo en el show de talentos.
C1 adjective /ˈstætʃətɔːri/

statutory

estatutario
Meaning
Required, permitted, or enacted by law.
Example
The company must comply with all statutory regulations.
La empresa debe cumplir con todas las regulaciones estatutarias.
B2 verb /ˈsʌmən/

summon

convocar, llamar
Meaning
To order someone to come or to gather courage or strength.
Example
The king summoned his advisors to the court.
El rey convocó a sus asesores al tribunal.
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 /ˈstænzə/

stanza

estrofa
Meaning
a group of lines forming a unit in a poem or song
Example
The poem begins with a stanza describing nature.
El poema comienza con una estrofa que describe la naturaleza.
B2 verb /spɪn/

spin

girar
Meaning
To turn around quickly or cause something to rotate
Example
The dancer began to spin gracefully on the stage.
La bailarina comenzó a girar con gracia en el escenario.
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.
C1 adjective /stɔːntʃ/

staunch

firme, leal
Meaning
Loyal, committed, and firm in support.
Example
She is a staunch supporter of environmental protection.
Ella es una firme defensora de la protección del medio ambiente.
B2 noun /stəˈbɪl.ə.ti/

Stability

estabilidad
Meaning
the state of being stable; firmness; steadiness
Example
Political stability is essential for economic growth.
La estabilidad política es esencial para el crecimiento económico.
A2 adjective /ˈsep.ər.ət/

Separate

separado; distinto; individual; aparte
Meaning
distinct; not connected; individual; apart
Example
Please keep your personal and professional lives separate.
Por favor, mantén tu vida personal y profesional separada.
A2 noun /sænd/

sand

felicidad
Meaning
Small loose grains of crushed rock, found on beaches and deserts.
Example
Children built castles out of sand on the beach.
Ella no podía esconder su felicidad cuando recibió el premio.
B2 verb /spɛər/

spare

dar algo extra / ahorrar
Meaning
To give something that one has extra of; to refrain from harming or killing.
Example
Could you spare me a few minutes of your time?
¿Podrías darme unos minutos de tu tiempo?
B1 noun /səˈpɔːtər/

supporter

partidario
Meaning
a person who supports someone or something
Example
She is a strong supporter of the local animal shelter.
Ella es una gran partidaria del refugio local de animales.
A2 adverb /ˈsʌd.ən.li/

Suddenly

de repente
Meaning
quickly and without warning; unexpectedly
Example
The car suddenly stopped in the middle of the road.
El coche se detuvo de repente en medio de la carretera.
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.
C1 verb /ˈsʌkɪŋ/

sucking

chupar
Meaning
Drawing in a liquid, air, or other substance through the mouth or a tube by creating a vacuum; also used figuratively for something unpleasant or ineffective
Example
The baby is sucking on a pacifier.
El bebé está chupando un chupete.
B2 noun/verb /stʌmp/

stump

tronco de árbol, desconcertar
Meaning
the base of a tree left after the trunk is cut down; to puzzle or confuse
Example
The question completely stumped the students.
La pregunta desconcertó completamente a los estudiantes.
C1 noun /ˈskeɪp.ɡəʊt/

Scapegoat

chivo expiatorio
Meaning
a person who is blamed for the wrongdoings, mistakes, or faults of others
Example
He became the scapegoat for the team's poor performance.
Se convirtió en el chivo expiatorio del pobre rendimiento del equipo.
A1 verb /seɪ/

say

decir
Meaning
to speak words; to express something in words
Example
She said hello to me.
Ella me dijo hola.
C1 noun /ˈstætʃuːt/

statute

ley
Meaning
A written law passed by a legislative body.
Example
The new statute protects workers' rights.
La nueva ley protege los derechos de los trabajadores.
C2 verb /ˈsæŋktɪfaɪ/

sanctify

santificar
Meaning
to make holy or sacred; to purify
Example
The priest will sanctify the marriage ceremony.
El sacerdote santificará la ceremonia de matrimonio.
C1 adjective /ˈsleɪ.vɪʃ/

slavish

esclavo
Meaning
showing no originality; completely imitative or overly submissive
Example
His slavish devotion to tradition prevented any innovation.
Su devoción esclava a la tradición impidió cualquier innovación.
C1 noun /ˈsɛvərəns/

severance

indemnización por despido
Meaning
the act of ending something, especially a relationship or employment; compensation paid upon termination
Example
The company offered him severance pay after his job ended.
La empresa le ofreció indemnización por despido después de que terminó su empleo.
B2 noun ˌsænɪˈteɪʃən

sanitation

saneamiento
Meaning
Conditions relating to public health, especially the provision of clean drinking water and adequate sewage disposal.
Example
Good sanitation practices are key to preventing infestations.
Las buenas prácticas de saneamiento son clave para prevenir infestaciones.
C1 noun /ˈsɑːri/

Saree

sari
Meaning
a garment consisting of a length of cotton or silk elaborately draped around the body, traditionally worn by women from South Asia
Example
She looked elegant in her red silk saree at the festival.
Ella lucía elegante con su sari de seda roja en el festival.
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 noun ˌsæn.ɪ.taɪˈzeɪ.ʃən

sanitization

sanitización
Meaning
The process of cleaning and disinfecting to eliminate germs and bacteria.
Example
Regular sanitization keeps appliances germ-free.
La sanitización regular mantiene los aparatos libres de gérmenes.
B2 adjective /slaɪ/

sly

astuto / sagaz
Meaning
Clever in a deceitful or cunning way.
Example
She gave him a sly smile.
Ella le dio una sonrisa astuta.
A2 noun /skɪn/

Skin

piel
Meaning
the outer covering of the body; the natural outer covering of a fruit or vegetable
Example
Her skin was soft and smooth.
Su piel era suave y lisa.
B2 verb /stɪŋ/

sting

picar
Meaning
to pierce with a sharp point; to cause sharp pain
Example
The bee stung him on his arm while he was gardening.
La abeja lo picó en el brazo mientras él estaba jardineando.
A1 verb /stænd/

stand

ponerse de pie
Meaning
to be in an upright position; to tolerate or endure
Example
Please stand up when the teacher enters.
Por favor, póngase de pie cuando entre el maestro.
A2 adverb /ˈsʌm.taɪm/

sometime

algún día
Meaning
at a time that is not known or stated; occasionally
Example
Let's meet for coffee sometime next week.
Vamos a encontrarnos para tomar un café algún día la próxima semana.
C2 adjective /spæzˈmɒdɪk/

spasmodic

espasmódico
Meaning
occurring irregularly or in sudden bursts
Example
The patient experienced spasmodic coughing during the night.
El paciente experimentó tos espasmódica durante la noche.
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.
B2 noun /swɪŋ/

Swing

columpio
Meaning
move or cause to move back and forth or from side to side while suspended or on an axis
Example
The children love to swing in the park.
A los niños les encanta balancearse en el parque.
C1 verb /snɪər/

sneer

sonreír de forma burlona
Meaning
to smile or speak in a mocking or contemptuous way
Example
She sneered at his attempt to sing.
Ella se burló de su intento de cantar.
B1 noun /ʃɑːrk/

Shark

tiburón
Meaning
a large marine fish with sharp teeth and a cartilaginous skeleton
Example
The shark is a powerful predator of the ocean.
El tiburón es un poderoso depredador del océano.
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.
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.
C2 verb /ˈsʌpjʊˌreɪt/

suppurate

supurar
Meaning
to form or discharge pus, usually as a result of infection
Example
The wound began to suppurate after a few days.
La herida comenzó a supurar después de unos días.
B2 adverb ˌsɪməlˈteɪnɪəsli

simultaneously

simultáneamente
Meaning
At the same time; occurring or existing at the same time.
Example
He worked on two projects simultaneously.
Trabajó en dos proyectos simultáneamente.
B2 adjective /ˌsuː.pəˈfɪʃ.əl/

superficial

superficial
Meaning
Existing or occurring at or on the surface; not thorough or deep.
Example
His understanding of the subject was rather superficial.
Su comprensión del tema era bastante superficial.
C2 noun /ˈsɪnəd/

synod

sínodo
Meaning
An assembly of the clergy in a Christian church convened to decide on issues of doctrine or administration.
Example
The synod gathered to discuss reforms in the church.
El sínodo se reunió para discutir reformas en la iglesia.
C1 verb /ʃɪə/

shear

cortar
Meaning
to cut the wool off a sheep or to cut something with sharp tools like scissors or shears
Example
The farmer will shear the sheep in the spring.
El agricultor sheará la oveja en la primavera.
C1 verb /smɜrk/

smirk

sonreír con suficiencia
Meaning
to smile in a self-satisfied, smug, or silly way
Example
He smirked when he won the argument.
Él sonrió cuando ganó la discusión.
C1 verb /snʌb/

snub

despreciar
Meaning
to insult or ignore someone by treating them rudely
Example
He felt hurt when his invitation was snubbed.
Él se sintió herido cuando su invitación fue despreciada.
C1 adjective /ˈstrætɪfaɪd/

stratified

estratificado
Meaning
arranged or classified in layers or strata
Example
Society in the past was highly stratified based on class and wealth.
La sociedad en el pasado estaba altamente estratificada según la clase y la riqueza.
B2 noun /spaɪt/

spite

despecho
Meaning
a desire to hurt, annoy, or offend someone
Example
She refused the gift out of spite.
Ella rechazó el regalo por despecho.
B2 noun ˈʃɔːtkʌmɪŋz

shortcomings

deficiencias
Meaning
A fault or failure to meet a certain standard; deficiencies.
Example
Institutional shortcomings affect student behavior negatively.
Las deficiencias institucionales afectan negativamente el comportamiento de los estudiantes.
A2 noun, verb /ˈsɛntəns/

sentence

oración; sentencia
Meaning
A set of words that expresses a complete thought; or a punishment given by a court of law.
Example
The judge gave him a five-year prison sentence.
El juez le dio una sentencia de cinco años de prisión.
B2 verb /ˈstrɛŋkθən/

strengthen

fortalecer
Meaning
To make or become stronger.
Example
Communication can strengthen bonds between people.
La comunicación puede fortalecer los lazos entre las personas.
C2 adjective /sæŋˈɡwɪniəs/

sanguineous

relacionado con sangre
Meaning
Relating to blood; bloody.
Example
The surgeon examined the sanguineous discharge from the wound.
El cirujano examinó la secreción sanguínea de la herida.
C1 adjective /skəˈlæstɪk/

scholastic

escolar
Meaning
Relating to schools, education, or academic learning.
Example
The school organizes scholastic competitions every year.
La escuela organiza competencias escolares cada año.
A2 verb /səˈdʒɛst/

suggest

sugerir
Meaning
to put forward an idea, plan, or recommendation for consideration
Example
He suggested going to the new restaurant for dinner.
Él sugirió ir al nuevo restaurante para la cena.
B2 noun /ˈsuː.ɪ.saɪd/

Suicide

suicidio
Meaning
the act of intentionally killing oneself
Example
Mental health professionals work to prevent suicide.
Los profesionales de la salud mental trabajan para prevenir el suicidio.
B2 noun /spekˈteɪtər/

Spectator

espectador
Meaning
a person who watches at a show, game, or other event; an observer
Example
The stadium was filled with excited spectators.
El estadio estaba lleno de espectadores emocionados.
B1 adjective /ˈsætɪsfaɪd/

satisfied

satisfecho
Meaning
Pleased or content with what has been achieved or received.
Example
He felt satisfied after finishing his project.
Se sintió satisfecho después de terminar su proyecto.
B2 noun /ˈsliːpər/

sleeper

persona que duerme; algo que tiene éxito inesperado
Meaning
a person or thing that sleeps; something that unexpectedly succeeds
Example
The movie turned out to be a real sleeper hit.
La película resultó ser un éxito inesperado.
C1 noun/verb /ˈslʌmbər/

slumber

sueño
Meaning
A state of sleep; to sleep lightly or rest.
Example
The child slumbered peacefully through the night.
El niño durmió pacíficamente durante la noche.
B2 verb /ʃrʌɡ/

shrug

encogerse de hombros
Meaning
To raise and lower the shoulders to express uncertainty or indifference.
Example
He shrugged when asked about the missing file.
Él se encogió de hombros cuando le preguntaron sobre el archivo perdido.
C2 noun /ˈsɛkstənt/

sextant

sextante
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.
Usando un sextante, el navegante fijó la posición del barco al mediodía.
B1 verb/adjective /sɪˈkjʊər/

secure

asegurar
Meaning
to make safe or protect; to fix something firmly in place
Example
Please secure the door before you leave.
Por favor asegura la puerta antes de irte.
C1 noun /ˌsəʊʃəˈbɪləti/

sociability

sociabilidad
Meaning
The quality or state of being sociable; friendliness.
Example
Her sociability made her popular in the office.
Su sociabilidad la hizo popular en la oficina.
C1 noun /ˈsaɪnəs/

sinus

seno
Meaning
A cavity within a bone or tissue, especially those in the bones of the face connected with the nasal cavities.
Example
He suffered from a sinus infection that caused headaches.
Él sufrió de una infección sinusal que le causó dolor de cabeza.
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.
B1 noun /səˈdʒes.tʃən/

Suggestion

sugerencia; consejo
Meaning
an idea or plan put forward for consideration; advice or recommendation
Example
Do you have any suggestions for improving our team's productivity?
¿Tienes alguna sugerencia para mejorar la productividad de nuestro equipo?
B2 verb, noun /stæb/

stab

apuñalar
Meaning
to pierce or wound with a pointed weapon or object
Example
He was stabbed in the back during the altercation.
Fue apuñalado en la espalda durante la pelea.
B2 adjective spekˈtækjʊlər

spectacular

espectacular
Meaning
Beautiful in a dramatic and eye-catching way; very impressive.
Example
The launch of the spacecraft was a spectacular event.
El lanzamiento de la nave espacial fue un evento espectacular.
B2 adjective /ˈsoʊlər/

solar

solar
Meaning
Relating to or determined by the sun
Example
The house is powered by solar energy.
La casa está alimentada por energía solar.
C2 noun /ˈsteɪsɪs/ or /ˈstæsɪs/

stasis

estasis
Meaning
A state of inactivity or equilibrium; a situation where nothing changes.
Example
The negotiations reached a state of stasis with no progress made.
Las negociaciones llegaron a un estado de estasis sin avances.
B1 adjective /ˈsɔːlti/

Salty

salado
Meaning
having the taste of salt; containing salt; tasting of seawater
Example
The salty ocean water made her thirsty.
El agua salada del océano la hizo tener sed.
C1 adjective /ˈskræpi/

scrappy

peleador / desordenado
Meaning
Determined and willing to fight or argue; also messy or disorganized.
Example
Despite being small, he was a scrappy fighter.
A pesar de ser pequeño, era un peleador audaz.
C2 noun /ˈsʌfrədʒɪst/

suffragist

sufragista
Meaning
a person advocating the extension of suffrage, especially to women
Example
The suffragists organized rallies to demand voting rights for women.
Los sufragistas organizaron manifestaciones para exigir los derechos de voto para las mujeres.
C1 noun ˈsʌs.tɪ.nəns

Sustenance

sustento o alimento
Meaning
Food or support necessary for sustaining life
Example
Water is essential for human sustenance.
El agua es esencial para la sustentación humana.
C1 noun /ˈsʌm.ɪt əv ðə ˈfjuː.tʃər/

Summit of the Future

Cumbre del futuro
Meaning
A high-level conference focused on addressing future challenges and opportunities.
Example
The Summit of the Future addressed global challenges.
La Cumbre del Futuro abordó los desafíos globales.
C1 noun ˈsɒl.vən.si

solvency

la posesión de activos en exceso de pasivos; capacidad para pagar deudas
Meaning
The possession of assets in excess of liabilities; ability to pay debts.
Example
The company's solvency improved after restructuring.
La solvencia de la empresa mejoró después de la reestructuración.
B1 noun /ˈslɪpər/

Slipper

pantufla
Meaning
light, comfortable shoe without a back, worn indoors
Example
She put on her slippers before walking around the house.
Ella se puso sus pantuflas antes de caminar por la casa.
C2 adjective /saɪˈdɪəriəl/

sidereal

sideral
Meaning
Relating to the stars or constellations; measured relative to the stars.
Example
Astronomers use sidereal time to track the positions of stars.
Los astrónomos usan el tiempo sideral para rastrear las posiciones de las estrellas.