Saphire
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C1 noun /ˈsæf.aɪər/

Saphire

zafiro
Meaning
a precious stone that is typically blue in color
Example
The royal crown was adorned with a large sapphire.
La corona real estaba adornada con un gran zafiro.
C2 noun /ˈspɛndˌθrɪft/

spendthrift

derrochador
Meaning
A person who spends money extravagantly or wastefully.
Example
The young prince was known as a spendthrift, wasting his fortune on lavish parties.
El joven príncipe era conocido como un derrochador, desperdiciando su fortuna en fiestas lujosas.
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.
A2 preposition /sɪns/

since

desde
Meaning
from a particular time in the past until now
Example
I have known her since childhood.
La conozco desde la infancia.
C1 adjective /ˈstʌm.pi/

Stumpy

bajo y grueso
Meaning
short and thick; having a short, thick appearance
Example
The stumpy little dog wagged its tail enthusiastically.
El perrito bajo y grueso movió su cola con entusiasmo.
B2 noun /ˌspeʃiˈælɪti/

Speciality

especialidad
Meaning
a particular area of activity or interest that someone focuses on; expertise in a specific field
Example
His speciality is Italian cuisine.
Su especialidad es la cocina italiana.
C1 verb /ˈstɪp.jʊ.leɪt/

stipulate

establecer
Meaning
to demand or specify a condition in an agreement or contract
Example
The contract stipulates that payment must be made within 30 days.
El contrato estipula que el pago debe realizarse dentro de 30 días.
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.
C2 noun /ˈsʊrmə fɪʃ/

Surma fish

pez Surma
Meaning
a freshwater fish species found in the Surma river system of Bangladesh and northeastern India
Example
Surma fish is native to the rivers of Sylhet region.
El pez Surma es originario de los ríos de la región de Sylhet.
C1 verb /ˈsætəˌraɪz/

satirize

satirizar
Meaning
to mock or criticize something using satire
Example
The play satirizes the greed of modern corporations.
La obra satiriza la codicia de las corporaciones modernas.
B2 verb /səbˈtrækt/

subtract

restar
Meaning
to take away a number or amount from another number or amount
Example
If you subtract 5 from 10, you get 5.
Si restas 5 de 10, obtienes 5.
B2 noun/verb /ˈslɔː.tər/

slaughter

matanza / asesinato
Meaning
the killing of animals for food; killing in large numbers violently
Example
The army slaughtered hundreds of enemy soldiers.
El ejército mató a cientos de soldados enemigos.
C1 adjective /ˈskwɒlɪd/

squalid

extremadamente sucio
Meaning
extremely dirty and unpleasant, often due to poverty or neglect
Example
He lived in a squalid room with broken furniture.
Vivía en una habitación sucia con muebles rotos.
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 noun /ʃuː/

Shoe

zapato
Meaning
covering for the foot, typically made of leather or cloth
Example
She bought a new pair of running shoes for exercise.
Ella compró un par de zapatos para correr para hacer ejercicio.
C2 adjective /sɪˈlæbɪk/

syllabic

silábico
Meaning
Relating to or based on syllables.
Example
The teacher explained the syllabic structure of the word.
El maestro explicó la estructura silábica de la palabra.
C1 noun /stents/

stents

stents
Meaning
Small mesh tubes used to treat narrow or blocked arteries.
Example
Stents were successfully placed using robotic techniques.
Los stents fueron colocados con éxito utilizando técnicas robóticas.
C2 noun/verb /sluːs/

sluice

compuerta de agua / enjuagar
Meaning
A sliding gate for controlling the flow of water; to wash or rinse with water in large quantities.
Example
The workers sluiced the mud off the street after the heavy rain.
Los trabajadores limpiaron el barro de la calle después de la fuerte lluvia.
C2 noun /ˈskʌl.i.ən/

scullion

sirviente de cocina
Meaning
a servant assigned the most menial kitchen tasks
Example
In medieval times, a scullion was responsible for cleaning pots and pans.
En la Edad Media, un scullion era responsable de limpiar las ollas y sartenes.
C2 adjective /ˈsiːkwənt/

sequent

secuente
Meaning
Following in order or as a result.
Example
The sequent events changed the course of history.
Los eventos subsecuentes cambiaron el curso de la historia.
B2 noun /ˈsɛnətər/

senator

senador
Meaning
a member of a senate, especially in a legislative body
Example
The senator spoke passionately about environmental policies.
El senador habló con pasión sobre las políticas ambientales.
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 adjective /ˈskrɔːni/

scrawny

flaco
Meaning
very thin and bony, often looking unhealthy
Example
The scrawny boy could barely lift the heavy bag.
El chico flaco apenas podía levantar la bolsa pesada.
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.
B1 noun /ˈsɛkrəteri/

secretary

secretario
Meaning
a person employed to handle correspondence and manage routine tasks for an individual or organization
Example
The secretary scheduled the meeting for tomorrow.
El secretario programó la reunión para mañana.
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.
B1 noun ˈstrætədʒi

strategy

estrategia
Meaning
A plan of action designed to achieve a long-term or overall aim.
Example
The strategy ensured success.
La estrategia aseguró el éxito.
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 /ˈspesɪmən/

Specimen

muestra; espécimen; ejemplar
Meaning
an individual example of something; a sample collected for scientific study or testing
Example
The scientist collected a blood specimen for analysis.
El científico recogió una muestra de sangre para su análisis.
C2 adjective /ˌsɒfəˈmɒrɪk/

sophomoric

inmaduro
Meaning
showing immaturity and overconfidence, like a sophomore
Example
His sophomoric behavior embarrassed his friends.
Su comportamiento inmaduro avergonzó a sus amigos.
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 /ˈsɪlk.wɜːrm/

Silk-worm

gusano de seda
Meaning
the caterpillar of a moth that produces silk fibers used to make silk fabric
Example
Silkworms feed on mulberry leaves to produce silk.
Los gusanos de seda se alimentan de hojas de morera para producir seda.
B1 verb /splɪt/

split

dividir
Meaning
to divide or separate into parts or groups
Example
He split the log in two with an axe.
Él dividió el tronco en dos con un hacha.
A1 modal verb /ʃʊd/

should

debería
Meaning
used to indicate obligation or duty
Example
You should study for your exams.
Deberías estudiar para tus exámenes.
B1 noun səˈplaɪ

supply

suministro. provisión.
Meaning
A stock or amount of something supplied or available for use.
Example
Supply chains ensure resource availability.
Las cadenas de suministro aseguran la disponibilidad de recursos.
C1 noun /ˈsɛntɪnəl/

sentinel

centinela
Meaning
A soldier or guard whose job is to stand and keep watch.
Example
A sentinel stood at the entrance of the camp.
Un centinela estaba de pie en la entrada del campamento.
B2 noun /stɑːr fɪʃ/

Star fish

estrella de mar
Meaning
a marine echinoderm with five or more radiating arms, typically found on the sea floor
Example
The starfish slowly moved across the ocean floor searching for food.
La estrella de mar se movía lentamente por el fondo del océano buscando comida.
C1 noun/verb /skɜːrdʒ/

scourge

maldición / flagelo
Meaning
A source of great pain or punishment; to whip or inflict suffering on someone.
Example
Disease and poverty remain a scourge in many regions.
La enfermedad y la pobreza siguen siendo una maldición en muchas regiones.
B2 adjective /ʃɪər/

Sheer

completo; absoluto; transparente; muy empinado
Meaning
complete; absolute; transparent; very steep
Example
It was sheer luck that we found the place.
Fue pura suerte que encontramos el lugar.
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 adjective /ˈskʌr.ɪ.ləs/

scurrilous

calumnioso
Meaning
Using or expressed in coarse, abusive, or slanderous language.
Example
The politician faced criticism for his scurrilous remarks about his opponent.
El político enfrentó críticas por sus comentarios calumniosos sobre su oponente.
B1 noun /swiːt pəˈteɪtoʊ/

Sweet potato

batata dulce
Meaning
A root vegetable with sweet flesh, typically orange or purple in color
Example
Roasted sweet potato makes a healthy and delicious side dish.
La batata asada hace un acompañante saludable y delicioso.
B2 verb /saɪ/

sigh

suspirar
Meaning
to let out a long, deep breath as an expression of tiredness, relief, or sadness
Example
She sighed with relief when she heard the good news.
Ella suspiró de alivio cuando escuchó las buenas noticias.
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.
C1 adjective /ˈsiːzənəbəl/

Seasonable

estacional
Meaning
occurring at the right time; appropriate for the season; timely
Example
The seasonable rain helped the farmers with their crops.
La lluvia estacional ayudó a los agricultores con sus cultivos.
C1 adjective /ˈsaʊnd.pruːf/

Sound-proof

a prueba de sonido; que evita que el sonido entre o salga
Meaning
impervious to sound; preventing sound from entering or leaving
Example
The recording studio has sound-proof walls.
El estudio de grabación tiene paredes a prueba de sonido.
C2 noun /seɪn/

seine

gran red
Meaning
A large fishing net that hangs vertically in the water.
Example
The fishermen cast their seine into the river.
Los pescadores echaron su gran red en el río.
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.
A2 noun /ˈsɛlər/

seller

felicidad
Meaning
a person who sells something
Example
The seller offered a discount on bulk purchases.
Ella no pudo ocultar su felicidad cuando recibió el premio.
C1 adjective /ˈstɪltɪd/

stilted

artificial, forzado
Meaning
Speech or writing that is stiff, unnatural, or overly formal.
Example
His speech sounded stilted and rehearsed.
Su discurso sonaba forzado y ensayado.
B2 noun /ˈsʌm.ɪt/

summit

cumbre
Meaning
A high-level meeting between leaders, especially of governments; a conference.
Example
The summit addressed pressing global issues.
La cumbre abordó cuestiones globales urgentes.
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.
A2 adjective /ʃɑːrp/

Sharp

agudo; intenso; repentino y fuerte; rápido para entender
Meaning
having a cutting edge or point; sudden and intense; quick to understand
Example
The knife has a very sharp blade.
El cuchillo tiene una hoja muy afilada.
A2 adjective /skɛrd/

scared

asustado
Meaning
feeling afraid or worried
Example
She was scared of the dark.
Ella tenía miedo de la oscuridad.
B2 noun /skwɒd/

squad

escuadra
Meaning
a small group of people organized for a specific purpose or task, often in the military or sports
Example
The football squad trained hard before the championship match.
El equipo de fútbol entrenó duro antes del partido de campeonato.
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.
A2 noun /saɪz/

size

tamaño
Meaning
the physical dimensions, proportions, or magnitude of something
Example
This shirt is too small in size for me.
Esta camisa es demasiado pequeña en tamaño para mí.
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/verb /ˈsoʊdʒɜrn/

sojourn

estancia temporal
Meaning
A temporary stay at a place; to stay temporarily
Example
She enjoyed a brief sojourn in Paris during the summer.
Disfrutó de una breve estancia temporal en París durante el verano.
C1 noun ˈsɪnədʒi

synergy

sinergia, cooperación
Meaning
The interaction or cooperation of two or more organizations, substances, or other agents to produce a combined effect greater than the sum of their separate effects.
Example
The synergy between the two companies led to a successful partnership.
La sinergia entre las dos empresas condujo a una exitosa asociación.
A2 noun/verb /sɛns/

sense

sentido
Meaning
A faculty by which the body perceives external stimuli; or to perceive something without being told.
Example
She had a strong sense of responsibility.
Ella tenía un fuerte sentido de responsabilidad.
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.
B2 adjective /ˈsʌb.sɪ.kwənt/

subsequent

subsecuente
Meaning
Coming after something in time; following in time or order.
Example
Subsequent events clarified the outcomes.
Los eventos subsecuentes aclararon los resultados.
B2 adverb /ˈstɛdɪli/

steadily

de manera constante
Meaning
in a regular and continuous way; without stopping or changing
Example
The company's profits have been increasing steadily.
Las ganancias de la empresa han aumentado de manera constante.
C2 noun /skɪf/

skiff

bote pequeño
Meaning
a small, light boat usually for one person
Example
The fisherman paddled his skiff across the lake.
El pescador remó su bote pequeño a través del lago.
A2 noun /ˈsɪŋ.ər/

Singer

cantante
Meaning
a person who sings, especially as a job or profession
Example
The singer performed beautifully at the concert last night.
El cantante realizó una hermosa actuación en el concierto de anoche.
C1 verb /ˈstriːmlaɪnɪŋ/

streamlining

simplificación
Meaning
The process of making an organization or system more efficient by simplifying or eliminating unnecessary steps
Example
Streamlining processes can significantly reduce operational costs.
La simplificación de procesos puede reducir significativamente los costos operacionales.
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.
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 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.
A2 noun /ˈsɒftweə/

software

software
Meaning
the programs and other operating information used by a computer
Example
He installed the software to enhance the performance of his computer.
Instaló el software para mejorar el rendimiento de su computadora.
A1 noun /suːp/

Soup

sopa
Meaning
a liquid food made by boiling meat, vegetables, or other ingredients in water
Example
I had a bowl of chicken soup for lunch.
Tuve un tazón de sopa de pollo para el almuerzo.
C1 noun /ˌsæbəˈtɜːr/

saboteur

saboteador
Meaning
A person who engages in sabotage.
Example
The saboteur was arrested before he could plant the bomb.
El saboteador fue arrestado antes de poder plantar la bomba.
C1 verb /ˈspɪərˌhɛd/

spearhead

encabezar
Meaning
to lead or initiate an action, project, or movement
Example
She spearheaded the campaign for environmental awareness.
Ella encabezó la campaña por la conciencia ambiental.
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 /səˈraʊnd/

surround

rodear
Meaning
To be all around someone or something.
Example
Mountains surround the small village.
Las montañas rodean el pequeño pueblo.
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.
C1 noun /spæt/

spat

disputa pequeña
Meaning
a short, petty quarrel or argument
Example
They had a brief spat about who should do the dishes.
Tuvieron una breve disputa sobre quién debería lavar los platos.
B2 noun /spɑːrk/

Spark

chispa
Meaning
a small fiery particle thrown off from a fire; a flash of light; something that triggers or initiates
Example
A spark from the campfire ignited the dry leaves.
Una chispa del fuego de campamento encendió las hojas secas.
B1 noun /sɔɪl/

soil

suelo
Meaning
The upper layer of earth in which plants grow.
Example
The soil in this area is reddish.
El suelo en esta área es rojizo.
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.
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.
B2 verb /spɪt/

spit

escupir
Meaning
to force liquid, especially saliva, out of the mouth
Example
He spat on the ground in anger.
Él escupió en el suelo con ira.
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 noun, adjective /ˈsɒlvənt/

solvent

disolvente, capaz de pagar deudas
Meaning
a liquid that dissolves other substances; also means able to pay debts
Example
Acetone is a common solvent used in laboratories.
El acetona es un disolvente común usado en laboratorios.
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.
C2 verb /səˈfjuːz/

suffuse

difundir
Meaning
to gradually spread through or over something
Example
A warm glow suffused her face as she smiled.
Un resplandor cálido se difundió por su rostro mientras ella sonreía.
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.
C2 adjective /ˌsuːpərˈnuːmərɛri/

supernumerary

suplementario
Meaning
Exceeding the usual number; extra or unnecessary.
Example
The play included several supernumerary actors to fill the background scenes.
La obra incluyó varios actores suplementarios para llenar las escenas de fondo.
A1 adjective /ʃʊr/

Sure

seguro; ciertamente
Meaning
completely confident that something is true; certain; definitely true
Example
I am sure that he will come tomorrow.
Estoy seguro de que él vendrá mañana.
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.
A1 noun /ˈsʌn.deɪ/

sunday

domingo
Meaning
The day of the week between Saturday and Monday; often considered a day of rest or worship.
Example
We usually relax at home on Sunday.
Normalmente descansamos en casa el domingo.
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.
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.
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.
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.
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.
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.
A2 noun /ˈswɛtər/

sweater

suéter
Meaning
a warm knitted piece of clothing worn on the upper body
Example
She wore a red sweater to keep warm in the cold weather.
Ella llevó un suéter rojo para mantenerse abrigada en el clima frío.
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.
C1 noun ˌsɪs.təˈmæt.ɪk ˈstræt.ə.dʒi

systematic strategy

estrategia sistemática
Meaning
A methodical and organized plan or approach to achieve specific objectives.
Example
A systematic strategy was employed to achieve objectives.
Se empleó una estrategia sistemática para alcanzar los objetivos.
C1 adjective /ˈstɛr.aɪl/

sterile

estéril
Meaning
Free from bacteria or other living microorganisms; incapable of producing offspring.
Example
The surgeon worked in a sterile environment to avoid infection.
El cirujano trabajó en un ambiente estéril para evitar infecciones.
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.
C2 verb /sleɪk/

slake

calmar la sed
Meaning
To satisfy thirst or desire.
Example
She drank cold water to slake her thirst.
Ella bebió agua fría para calmar su sed.
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.
B2 verb, noun, adjective /streɪ/

stray

perderse
Meaning
to move away from the correct path or go off course; a person or animal that has wandered off; something that is not where it belongs
Example
The dog strayed from the yard and got lost.
El perro se desvió del jardín y se perdió.
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.
C2 verb /skwɛltʃ/

squelch

hacer un sonido suave, como caminar en el barro; suprimir o callar
Meaning
to make a soft sucking sound, such as when walking on mud; to suppress or silence
Example
His boots squelched in the wet ground.
Sus botas hicieron un ruido de squelch en el suelo mojado.
C1 noun /ˈsɛpərətɪst/

separatist

separatista
Meaning
A person who supports the separation of a group from a larger body, often for political or cultural independence.
Example
The separatist group demanded independence from the central government.
El grupo separatista exigió la independencia del gobierno central.
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.
C1 verb /ˈswɛltər/

swelter

sufrir por calor intenso
Meaning
to suffer from intense heat
Example
We began to swelter in the midday sun.
Empezamos a sudar bajo el sol del mediodía.
A1 verb /stɑːrt/

start

comenzar
Meaning
to begin something; to commence; to initiate
Example
Let's start the meeting now.
vamos a comenzar la reunión ahora.
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 noun /ˈswiːt.miːt/

Sweetmeat

dulce
Meaning
a small piece of confectionery or candy; a sweet delicacy
Example
The children enjoyed the traditional sweetmeats during the festival.
Los niños disfrutaron de los dulces tradicionales durante el festival.
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.
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.
C1 verb ˈsɪn.ɚ.dʒaɪz

synergize

sinergizar, combinar de manera que aumente la efectividad.
Meaning
combine in such a way as to enhance effectiveness.
Example
The departments must synergize to improve efficiency.
Los departamentos deben sinergizar para mejorar la eficiencia.
B1 adverb /ˈʃɔːt.li/

Shortly

pronto; en breve; brevemente
Meaning
soon; in a short time; briefly
Example
The meeting will begin shortly.
La reunión comenzará pronto.
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.
B1 adverb /ˈspeʃ.əl.i/

Specially

especialmente
Meaning
for a particular purpose; especially; specifically
Example
This gift was specially made for you.
Este regalo fue hecho especialmente para ti.
B2 adjective /ˌsʌp.lɪˈmen.tər.i/

Supplementary

suplementario; adicional; extra
Meaning
completing or making an addition to something; additional; extra
Example
Students need to buy supplementary books for the course.
Los estudiantes necesitan comprar libros suplementarios para el curso.