someday
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A2 adverb /ˈsʌm.deɪ/

someday

algún día
Meaning
at some time in the future
Example
Someday, I want to travel the world.
Algún día quiero viajar por el mundo.
C1 adjective /ˈspjʊəriəs/

spurious

falso / fraudulento
Meaning
Not genuine, authentic, or true; false or fake.
Example
The report was based on spurious claims.
El informe se basó en afirmaciones falsas.
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.
B2 adjective /ˈslɪp.ər.i/

Slippery

resbaladizo
Meaning
smooth and difficult to hold; causing sliding or slipping
Example
The wet floor was very slippery after cleaning.
El suelo mojado estaba muy resbaladizo después de limpiarlo.
B1 adjective /ˈskɪlfʊl/

Skilful

habilidoso; experto; diestro
Meaning
having or showing skill; expert and accomplished
Example
The skilful surgeon performed the operation with great precision.
El cirujano habilidoso realizó la operación con gran precisión.
B2 noun /səˈplaɪə(r)/

supplier

proveedor
Meaning
a person or company that provides goods or services
Example
The supplier delivered the products on time.
El proveedor entregó los productos a tiempo.
B2 noun /ˈstrʌk.tʃərz/

structures

estructuras
Meaning
Buildings or other objects constructed from several parts.
Example
The region has ancient structures.
La región tiene estructuras antiguas.
A2 noun /skɜːrt/

Skirt

falda
Meaning
a garment that hangs from the waist and covers part or all of the legs
Example
She chose a blue skirt to match her blouse.
Ella eligió una falda azul para combinar con su blusa.
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 /ˈskɛlɪtən/

skeleton

esqueleto
Meaning
The internal framework of bones that supports the body of a human or animal.
Example
The teacher showed the students a human skeleton in the biology class.
El maestro mostró a los estudiantes un esqueleto humano en la clase de biología.
C1 noun /ˌsɛlf əˌfɜːˈmeɪʃən/

self-affirmation

autoafirmación
Meaning
The practice of affirming one's own worthiness and value as an individual.
Example
Daily self-affirmation can boost your confidence.
La autoafirmación diaria puede aumentar tu confianza.
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.
C1 noun /slæb/

slab

losa
Meaning
a large, thick, flat piece of stone, concrete, or other hard material
Example
The workers laid a concrete slab for the foundation.
Los trabajadores colocaron una losa de concreto para la fundación.
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 /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 /streɪndʒ/

strange

extraño
Meaning
unusual or not normal
Example
It was strange to see him at the party after so long.
Era extraño verlo en la fiesta después de tanto tiempo.
C1 noun /sɪˈkluːʒən/

seclusion

aislamiento
Meaning
The state of being private, away from other people.
Example
She spent the weekend in complete seclusion in her cabin.
Pasó el fin de semana en completo aislamiento en su cabaña.
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.
B2 adjective /slɪm/

slim

delgado
Meaning
thin in an attractive or healthy way; small in amount or chance
Example
She looked slim in her new dress.
Ella se veía delgada en su nuevo vestido.
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 adjective /ˈsaɪt.ləs/

Sightless

ciego; sin visión
Meaning
unable to see; blind; lacking vision
Example
The sightless man navigated the street with his guide dog.
El hombre ciego navegó por la calle con su perro guía.
C1 adjective /ˈsɛnʃənt/

sentient

sensible
Meaning
Able to perceive or feel things.
Example
Humans are sentient beings capable of reasoning.
Los humanos son seres sentientes capaces de razonar.
C1 verb /ˈstæmər/

stammer

tartamudear
Meaning
To speak with sudden involuntary pauses and a tendency to repeat the initial letters of words.
Example
The nervous student began to stammer during his speech.
El estudiante nervioso comenzó a tartamudear durante su discurso.
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 noun /ˈsuːtər/

suitor

pretendiente
Meaning
a man who pursues a relationship with a woman, often with the intent to marry
Example
She had many suitors vying for her attention.
Ella tenía muchos pretendientes compitiendo por su atención.
B2 noun /ˈsɪɡ.nə.tʃər/

Signature

firma
Meaning
a person's name written in their own handwriting as identification or authorization
Example
Please put your signature at the bottom of the document.
Por favor ponga su firma en la parte inferior del documento.
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.
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.
B2 noun/verb /skɔːrn/

scorn

desprecio
Meaning
the feeling or expression of contempt or disdain; to treat with contempt
Example
She looked at him with open scorn.
Ella lo miró con desprecio.
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.
B2 noun /ˈswɛər wɜːrd/

swear-word

palabra grosera
Meaning
An offensive or rude word used to express anger or frustration.
Example
He shouted a swear-word when he hit his toe.
Él gritó una palabra grosera cuando se golpeó el dedo del pie.
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 verb ˈsiːlɪŋ

sealing

sellar, cerrar
Meaning
The action of closing or blocking something to prevent entry or escape.
Example
Sealing cracks in the walls can prevent pests from entering.
Sellar las grietas en las paredes puede evitar que las plagas entren.
C1 adjective /ˈsɛreɪtɪd/

serrated

dentado
Meaning
Having a notched or saw-toothed edge.
Example
The bread knife had a serrated blade.
El cuchillo de pan tenía una hoja dentada.
C1 noun /ˈsɒlstɪs/

solstice

solsticio
Meaning
the two times in the year when the sun is at its greatest distance from the equator (summer and winter solstice)
Example
People celebrate the summer solstice with festivals and rituals.
La gente celebra el solsticio de verano con festivales y rituales.
B1 verb /spaɪ/

spy

espía
Meaning
to secretly collect information about a person, group, or country
Example
He was caught spying on his neighbor through the window.
Lo atraparon espiando a su vecino a través de la ventana.
C1 noun /sloʊθ/

Sloth

pereza; reluctancia a trabajar o hacer un esfuerzo
Meaning
laziness; reluctance to work or make an effort
Example
His sloth prevented him from achieving his goals.
Su pereza le impidió alcanzar sus metas.
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 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.
A1 noun /striːt/

street

calle
Meaning
a public road in a city or town, typically with buildings on one or both sides
Example
He walked down the street to the park.
Caminó por la calle hasta el parque.
B2 adverb /ˈsiː.krət.li/

secretly

secretamente
Meaning
in a way that is hidden or not known by others
Example
She secretly planned a surprise party for her friend.
Ella planeó secretamente una fiesta sorpresa para su amiga.
C2 adjective səˈluː.bri.əs

salubrious

saludable
Meaning
Health-giving; healthy; promoting health and well-being.
Example
The mountain air is salubrious and refreshing.
El aire de la montaña es saludable y refrescante.
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.
C2 noun /səˈɡæs.ə.t̬i/

sagacity

sabiduría profunda
Meaning
The quality of being sagacious; having or showing keen mental discernment and good judgment.
Example
His sagacity made him a great leader.
Su sagacidad lo convirtió en un gran líder.
C1 noun /ʃraɪn/

Shrine

santuario; templo; lugar sagrado
Meaning
a holy or sacred place dedicated to a specific deity, ancestor, hero, or saint
Example
Pilgrims visit the shrine to pray for good health.
Los peregrinos visitan el santuario para rezar por buena salud.
B2 noun /ˈsɜːdʒən/

surgeon

cirujano
Meaning
a doctor who performs medical operations
Example
The surgeon performed a complex heart operation.
El cirujano realizó una operación compleja de corazón.
B2 adjective səˈfɪs.tɪ.keɪ.tɪd

sophisticated

sofisticado
Meaning
Having great knowledge or experience of the world and knowing about fashion, culture, and other things that people think are socially important; highly developed or complex.
Example
Sophisticated designs enhance aesthetics.
Los diseños sofisticados mejoran la estética.
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 verb /suːð/

soothe

calmar
Meaning
to calm or comfort; to relieve pain or distress
Example
The mother soothed her crying baby with a gentle lullaby.
La madre calmó a su bebé llorando con una suave canción de cuna.
B1 verb /ˈsɪzər/

scissor

cortar con tijeras
Meaning
to cut with or as if with scissors
Example
The tailor scissored the fabric neatly.
El sastre cortó la tela de manera ordenada.
B2 adjective /ˈspɪr.ɪ.tʃu.əl/

Spiritual

espiritual; religioso; sagrado
Meaning
relating to the human spirit or soul; religious or sacred
Example
She found spiritual peace through meditation.
Ella encontró paz espiritual a través de la meditación.
C1 noun /straɪf/

strife

conflicto, lucha
Meaning
angry or violent conflict; struggle or discord
Example
The region has been torn apart by political strife.
La región ha sido desgarrada por el conflicto político.
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 /ˈʃæmbəlz/

shambles

desorden total
Meaning
a state of complete disorder or ruin
Example
After the storm, the whole town was in shambles.
Después de la tormenta, toda la ciudad estaba en desorden total.
B2 verb /stɜːr/

stir

revolver
Meaning
to mix or move something in a circular motion, especially in liquid
Example
She stirred the soup to make sure it didn't burn.
Ella revolvió la sopa para asegurarse de que no se quemara.
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.
B1 noun, verb /stɒk/

stock

inventario
Meaning
a supply of goods kept for sale or use; to keep or fill with goods
Example
The shop stocks a wide variety of products.
La tienda tiene una amplia variedad de productos.
C1 noun /ˌsʌb.stɪˈtjuː.ʃən/

substitution

sustitución
Meaning
the action of replacing someone or something with another
Example
The substitution of the old system with the new one was difficult.
La sustitución del antiguo sistema por el nuevo fue difícil.
A2 noun /seɪl/

sale

venta
Meaning
the exchange of a commodity for money; the action of selling something
Example
The store is having a sale on winter clothing.
La tienda está teniendo una venta de ropa de invierno.
A1 noun /ʃɜːrt/

Shirt

camisa
Meaning
a piece of clothing worn on the upper body with sleeves and buttons
Example
He wore a white shirt to the office.
Él usó una camisa blanca para la oficina.
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.
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.
C2 verb /ˈsɪn.tɪ.leɪt/

scintillate

brillar
Meaning
to sparkle or shine brightly; to emit flashes of light
Example
The diamond ring scintillated under the bright lights.
El anillo de diamantes brilló bajo las luces brillantes.
B2 noun /ˈsɛktər/

sector

sector
Meaning
a distinct part or area of an economy, society, or industry
Example
The technology sector is growing rapidly.
El sector tecnológico está creciendo rápidamente.
C1 noun /ˈsɒl.ɪs/

Solace

consuelo
Meaning
comfort or consolation in a time of distress or sadness
Example
She found solace in music after her loss.
Encontró consuelo en la música después de su pérdida.
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.
C1 adjective /snaɪd/

snide

irónico
Meaning
mocking or insulting in an indirect way
Example
He couldn’t resist making a snide comment about her dress.
No pudo evitar hacer un comentario irónico sobre su vestido.
C2 noun /ˈsælvoʊ/

salvo

salva
Meaning
A simultaneous discharge of guns or release of bombs; a sudden outburst of cheers or applause.
Example
The soldiers fired a salvo to honor the fallen general.
Los soldados dispararon una salva para honrar al general caído.
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.
C1 noun, verb /spreɪn/

sprain

esguince
Meaning
an injury to a joint in which the ligaments are stretched or torn
Example
She sprained her ankle while running in the park.
Ella se torció el tobillo mientras corría en el parque.
C2 noun /sʌbˈɔːl.tən/

subaltern

persona en una posición subordinada; en el ejército, un oficial joven
Meaning
A person holding a subordinate position; in the military, a junior officer.
Example
The subaltern was responsible for leading a small platoon of soldiers.
El subalterno era responsable de dirigir un pequeño pelotón de soldados.
B2 noun /ˈskaɪˌskreɪpər/

Skyscraper

rascacielos
Meaning
a very tall building of many stories
Example
The new skyscraper dominates the city's skyline.
El nuevo rascacielos domina el horizonte de la ciudad.
C1 noun /ˈʃʊɡ.ər ˈkæn.di/

Sugar candy

caramelo de azúcar
Meaning
crystallized sugar formed into small pieces; rock candy made from sugar syrup
Example
The children enjoyed eating colorful sugar candy at the festival.
Los niños disfrutaron comer dulces de azúcar coloridos en el festival.
B2 verb /səˈsteɪn/

sustain

mantener
Meaning
To support, maintain, or keep something going over time.
Example
The team worked hard to sustain their success.
El equipo trabajó arduamente para mantener su éxito.
C1 noun /səbˈmɜːrdʒəns/

submergence

inmersión
Meaning
the act or process of being submerged or going underwater
Example
The submergence of coastal areas is a major concern due to rising sea levels.
La inmersión de las áreas costeras es una preocupación importante debido al aumento del nivel del mar.
B1 adjective /ˈsekənderi/

secondary

secundario
Meaning
Less important than something else; derived from or dependent on something primary.
Example
Safety is our primary concern, while speed is only secondary.
La seguridad es nuestra principal preocupación, mientras que la velocidad es solo secundaria.
A1 noun /ʃɒp/

shop

tienda
Meaning
a place where goods are sold to customers
Example
I need to go to the shop to buy some groceries.
Necesito ir a la tienda para comprar algunos víveres.
B2 adjective /spɒnˈteɪniəs/

Spontaneous

espontáneo
Meaning
done without planning; natural and unforced
Example
Their spontaneous dance in the rain was beautiful.
Su danza espontánea en la lluvia fue hermosa.
C1 verb, noun /sæp/

sap

savia / agotar
Meaning
As a noun: the vital fluid in plants; As a verb: to gradually weaken or drain strength.
Example
The long journey began to sap his energy.
El largo viaje comenzó a agotar su energía.
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.
A2 noun sɔːŋz

songs

canciones
Meaning
A short poem or other set of words set to music or meant to be sung.
Example
Listen to songs to learn pronunciation.
Escucha canciones para aprender pronunciación.
B1 noun /ˈseɪ.vɪŋz/

savings

ahorros
Meaning
Money that is saved, especially in a bank or official scheme for future use.
Example
Many people invest their savings in real estate.
Muchas personas invierten sus ahorros en bienes raíces.
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.
C1 adjective /ˈsʌlən/

sullen

gruñón
Meaning
bad-tempered and gloomy; silently resentful
Example
She gave him a sullen look and walked away.
Ella le dio una mirada gruñona y se fue.
C1 adjective /sliːk/

sleek

elegante y brillante
Meaning
smooth, shiny, and stylish
Example
She drove a sleek black sports car.
Ella condujo un coche deportivo brillante y elegante.
C2 adjective /ˌsæsərˈdoʊtl/

sacerdotal

sacerdotal
Meaning
Relating to priests or the priesthood.
Example
The ritual had a distinctly sacerdotal character.
El ritual tenía un carácter claramente sacerdotal.
A2 verb /sɑːlv/

solve

resolver
Meaning
to find an answer to a problem or question; to resolve a difficulty
Example
The detective finally solved the mysterious case.
El detective finalmente resolvió el caso misterioso.
B2 noun /ˈsɜr.neɪm/

Surname

apellido
Meaning
a hereditary name common to all members of a family; family name
Example
Please write your first name and surname on the form.
Por favor, escriba su primer nombre y apellido en el formulario.
C2 noun /ˌself əˈbeɪs.mənt/

self-abasement

automenos
Meaning
The act of belittling or humiliating oneself.
Example
His constant self-abasement made others uncomfortable.
Su constante automenos lo hacía sentir incómodo frente a los demás.
C2 adjective /sɪˈnɜːrdʒɪk/

synergic

sinérgico
Meaning
Working together in a cooperative and effective manner.
Example
The two departments have a synergic relationship that boosts productivity.
Los dos departamentos tienen una relación sinérgica que aumenta la productividad.
B2 verb /ˈsuːpərvaɪz/

supervise

supervisar
Meaning
to watch and direct a person or activity to ensure things are done correctly
Example
The teacher supervises students during the exam.
El maestro supervisa a los estudiantes durante el examen.
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.
A1 noun /ˈsæləd/

salad

ensalada
Meaning
a dish consisting of various ingredients, typically including vegetables, which are usually mixed with a dressing
Example
She made a fresh salad with lettuce, tomatoes, and cucumbers.
Ella preparó una ensalada fresca con lechuga, tomates y pepinos.
B1 adjective /ˈsɪniər/

senior

senior
Meaning
having a higher rank or status; older or more experienced
Example
He is the senior manager in the department.
Él es el gerente senior en el departamento.
C2 noun /ˈsɛm.ɪ.nɛr.i/

seminary

seminario
Meaning
A school or college for training priests, ministers, or rabbis.
Example
He decided to enroll in a seminary to study theology.
Decidió inscribirse en un seminario para estudiar teología.
B2 noun /ˈsɛnət/

senate

senado
Meaning
a legislative or governing body, typically the upper chamber in a bicameral legislature
Example
The senate voted in favor of the new healthcare bill.
El senado votó a favor del nuevo proyecto de ley de salud.
B2 verb /ˈʃætər/

shatter

romper
Meaning
To break suddenly into many small pieces.
Example
The glass will shatter if you drop it.
El vidrio se romperá si lo dejas caer.
C1 verb /sɪˈkluːd/

seclude

aislar
Meaning
To keep someone away from other people; to isolate.
Example
The monk chose to seclude himself in the mountains.
El monje eligió aislarse en las montañas.
C1 noun /ˌstætʃuˈɛt/

statuette

estatuilla
Meaning
A small statue, usually decorative or artistic.
Example
The artist won a gold statuette for his work.
El artista ganó una estatuilla de oro por su trabajo.
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.
A2 noun /stres/

stress

estrés
Meaning
Physical, mental, or emotional strain or tension.
Example
Excessive stress can lead to health issues.
El estrés excesivo puede causar problemas de salud.
A2 noun /sɔːs/

Sauce

salsa
Meaning
a liquid or semi-liquid substance served with food to add moisture and flavor
Example
She added tomato sauce to her pasta.
Ella agregó salsa de tomate a su pasta.
C2 noun /ˈskɪz.əm/ or /ˈsɪz.əm/

schism

felicidad
Meaning
A division or split between strongly opposed parties, often in religion or organizations.
Example
The schism in the church led to the formation of two separate groups.
Ella no pudo ocultar su felicidad cuando recibió el premio.
C2 noun /səbˈsɜːviəns/

subservience

subyugación
Meaning
the condition of being too willing to obey or serve others
Example
His subservience to authority annoyed his colleagues.
Su subyugación a la autoridad molestó a sus colegas.
B2 verb /ˈsteɪ.bə.laɪz/

stabilize

estabilizar
Meaning
to make something steady, secure, or unlikely to change suddenly
Example
The government took measures to stabilize the economy.
El gobierno tomó medidas para estabilizar la economía.
B1 verb /siːl/

seal

sellar, cerrar
Meaning
to close or secure something tightly or officially confirm something
Example
He sealed the envelope before sending the letter.
Él selló el sobre antes de enviar la carta.
C2 noun /ˈʃæd.ək/

Shaddock

pomelo
Meaning
a large citrus fruit similar to grapefruit; pomelo
Example
The shaddock is the largest citrus fruit in the world.
El shádok es la fruta cítrica más grande del mundo.
B2 noun/verb /ˈsæd.əl/

saddle

asiento de caballo; cargar a alguien con responsabilidad
Meaning
A seat fastened on the back of a horse for riding; to burden someone with a responsibility.
Example
He saddled the horse before going for a ride.
Él saddló el caballo antes de ir a montar.
A2 adjective /smuːð/

Smooth

suave; liso; sin dificultades; fluido
Meaning
having an even surface; without difficulties; flowing easily
Example
The road was smooth and comfortable to drive on.
El camino estaba suave y cómodo para conducir.
C2 noun /ˈsfɛrɔɪd/

spheroid

esferoide
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.
La Tierra no es una esfera perfecta sino un esferoide oblato.
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.
C1 noun /ˈslændər/

Slander

calumnias
Meaning
the action of making false spoken statements damaging to someone's reputation
Example
The politician sued the newspaper for slander.
El político demandó al periódico por calumnias.
A1 adjective /ʃɔːrt/

Short

corto; breve
Meaning
having a small length, height, or duration; not long
Example
The meeting was very short, lasting only ten minutes.
La reunión fue muy corta, duró solo diez minutos.
B2 adjective /ˈstʌb.ərn/

Stubborn

terco; obstinado; testarudo
Meaning
refusing to change opinion or course of action; persistent; obstinate
Example
The stubborn child refused to eat his vegetables.
El niño terco se negó a comer sus verduras.
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.
B2 noun /sɪlk/

silk

seda
Meaning
a fine, smooth fabric made from the threads produced by silkworms
Example
The dress was made of pure silk.
El vestido estaba hecho de seda pura.
B2 noun /ˈsɪr.i.əs.nəs/

Seriousness

seriedad; importancia
Meaning
the quality of being serious; gravity; importance
Example
The seriousness of the situation became clear when the doctor spoke.
La seriedad de la situación quedó clara cuando el doctor habló.
C1 noun /ˈskaɪ.lɑːrk/

Sky-Lark

alondra
Meaning
a small brown bird known for singing while flying high in the sky
Example
The skylark sang beautifully as it soared above the meadow.
La alondra cantó hermosamente mientras se elevaba sobre el prado.
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 verb /ˈstɪp.əl/

stipple

cubrir con pequeños puntos
Meaning
to cover a surface with numerous small dots or specks, often in drawing or painting
Example
The artist stippled the canvas to create a textured effect.
El artista cubrió el lienzo con pequeños puntos para crear un efecto texturizado.
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.