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C1 verb /sɪˈkriːt/

secrete

secreción
Meaning
to produce and release a substance from a cell, gland, or organ
Example
The pancreas secretes insulin to regulate blood sugar levels.
El páncreas secreta insulina para regular los niveles de azúcar en la sangre.
C1 noun səˈlɪnɪti ɪnˈtruːʒən

salinity intrusion

intrusión de salinidad
Meaning
The movement of salt water into freshwater areas, typically affecting coastal regions.
Example
Salinity intrusion affects coastal regions.
La intrusión de salinidad afecta las regiones costeras.
C1 adjective /ˈsted.fæst/

Steadfast

firme; resuelto; inquebrantable
Meaning
firm in belief, determination, or adherence; unwavering
Example
She remained steadfast in her commitment to helping the poor.
Ella permaneció firme en su compromiso de ayudar a los pobres.
C1 noun səˌsɛp.təˈbɪl.ə.ti

susceptibility

susceptibilidad
Meaning
The quality of being likely to be influenced or harmed by a particular thing; vulnerability.
Example
High susceptibility to infections requires extra care.
Alta susceptibilidad a infecciones requiere atención adicional.
C1 verb ˈsɪn.θə.saɪ.zɪŋ

synthesizing

sintetizar, combinar, presentar de forma coherente
Meaning
Combine (a number of things) into a coherent whole.
Example
He excels in synthesizing ideas from different sources.
Él sobresale en sintetizar ideas de diferentes fuentes.
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.
C1 adjective/noun /ˈsʌkjələnt/

succulent

jugoso
Meaning
Juicy or full of juice; also refers to a plant with thick, fleshy leaves adapted to storing water.
Example
The steak was so succulent that everyone enjoyed it.
El filete estaba tan jugoso que todos lo disfrutaron.
C1 noun, verb /strænd/

strand

hilo / varado
Meaning
Noun: A single thin length of thread, wire, or similar. Verb: To leave someone or something without a way of moving or leaving.
Example
The storm stranded many tourists on the island.
La tormenta dejó a muchos turistas varados en la isla.
C1 /splɪnt/

splint

férula
Meaning
A rigid device used to support and immobilize a broken or injured body part.
Example
The doctor applied a splint to stabilize the patient's broken arm.
El doctor aplicó una férula para estabilizar el brazo roto del paciente.
C1 noun /ˈsɪstərhʊd/

sisterhood

hermandad
Meaning
The relationship between sisters, or a community of women united by shared experiences or goals.
Example
The feminist movement created a strong sense of sisterhood among women.
El movimiento feminista creó un fuerte sentido de hermandad entre las mujeres.
C1 verb/noun /skɒtʃ/

scotch

poner fin / whisky escocés
Meaning
to put an end to something; also a type of whisky
Example
The report scotched the rumors of a merger.
El informe puso fin a los rumores sobre una fusión.
C1 noun /slæɡ/

slag

escoria
Meaning
Stony waste matter separated from metals during the smelting process.
Example
The factory dumped the slag near the river.
La fábrica arrojó la escoria cerca del río.
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.
C1 verb /səˈplænt/

supplant

suplantar
Meaning
To take the place of something or someone, often by force or strategy.
Example
Digital platforms have supplanted traditional newspapers.
Las plataformas digitales han suplantado a los periódicos tradicionales.
C1 adjective /ʃrɪl/

shrill

sonido agudo
Meaning
High-pitched and piercing in sound.
Example
The shrill whistle startled everyone in the room.
El silbido agudo sorprendió a todos en la sala.
C1 adjective /ˈspel.baʊnd/

Spellbound

hechizado; cautivado
Meaning
completely fascinated and unable to move or think about anything else; enchanted
Example
The children sat spellbound as the magician performed his tricks.
Los niños se quedaron hechizados mientras el mago hacía sus trucos.
C1 adjective /skænt/

Scant

escaso
Meaning
barely sufficient; inadequate; small in amount
Example
There was scant evidence to support his claim.
Había pocas pruebas para respaldar su afirmación.
C1 adjective /səbˈvɜːrsɪv/

subversive

subversivo
Meaning
seeking or intended to undermine or overthrow an established system or authority
Example
The group was banned for its subversive activities.
El grupo fue prohibido por sus actividades subversivas.
C1 noun /siˈɛrə klʌb/

Sierra Club

Sierra Club
Meaning
An American environmental organization founded in 1892 by John Muir, focused on promoting conservation of the natural environment by influencing public policy decisions.
Example
John Muir founded the Sierra Club in 1892 to protect wild areas.
John Muir fundó el Sierra Club en 1892 para proteger áreas salvajes.
C1 adjective /sɔɪld/

soiled

sucio
Meaning
dirty or stained; not clean
Example
His clothes were soiled after playing in the mud.
Su ropa estaba sucia después de jugar en el barro.
C1 verb /ˈsaɪdˌstɛp/

sidestep

eludir
Meaning
To avoid something by stepping aside; to evade a problem or question indirectly.
Example
The politician tried to sidestep the difficult question.
El político intentó eludir la difícil pregunta.
C1 adjective /ˈstɔːlwərt/

stalwart

firme, leal
Meaning
Loyal, reliable, and hardworking; strongly built or sturdy.
Example
She has always been a stalwart supporter of the community.
Ella siempre ha sido una firme defensora de la comunidad.
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 verb /ˈsɪn.θə.saɪz/

synthesize

sintetizar
Meaning
To combine a number of things into a coherent whole.
Example
Scientists synthesize new compounds for medical research.
Los científicos sintetizan nuevos compuestos para la investigación médica.
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.
C1 noun /ˈsteɪtəs kwoʊ/

status quo

status quo
Meaning
The existing state of affairs, especially regarding social or political issues.
Example
The government decided to maintain the status quo until further review.
El gobierno decidió mantener el status quo hasta una revisión posterior.
C1 noun /sərˈveɪər/

surveyor

topógrafo
Meaning
A person who measures and maps land, buildings, or other features.
Example
The surveyor measured the land for construction.
El topógrafo midió la tierra para la construcción.
C1 noun /ˈseɪɑːns/

seance

sesión espiritista
Meaning
A meeting where people attempt to communicate with the spirits of the dead.
Example
They held a seance to contact their late grandmother.
Celebraron una sesión espiritista para contactar a su abuela fallecida.
C1 adjective /ʃruːd/

Shrewd

astuto; inteligente; perspicaz
Meaning
having or showing sharp powers of judgment; astute
Example
The shrewd businessman made a profitable deal in the competitive market.
El astuto hombre de negocios hizo un trato rentable en el mercado competitivo.
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.
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.
C1 noun/verb /sleɪt/

slate

pizarra / programar
Meaning
a fine-grained rock used for roofing or writing; to schedule or designate for a task
Example
The meeting is slated for next Monday.
La reunión está programada para el próximo lunes.
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 adjective /ˈsɪnjuəs/

sinuous

sinuoso
Meaning
Having many curves, bends, or turns; winding.
Example
The hikers followed a sinuous path through the forest.
Los excursionistas siguieron un camino sinuoso a través del bosque.
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 /stɪˈlɛtoʊ/

stiletto

zapato de tacón delgado / daga
Meaning
A small, thin, high-heeled shoe or a dagger with a slender blade.
Example
She wore elegant stiletto heels to the party.
Ella llevaba unos elegantes tacones stilettos a la fiesta.
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 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.
C1 adjective səˈsaɪ.ə.təl

societal

social
Meaning
Relating to society or social relationships.
Example
Societal benefits of space tourism are under debate.
Los beneficios sociales del turismo espacial están en debate.
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 adjective /stjuːˈpɛndəs/

stupendous

asombroso
Meaning
extremely impressive; amazing in size, degree, or excellence
Example
The magician’s performance was simply stupendous.
La actuación del mago fue simplemente asombrosa.
C1 adjective /ˈsɜːrvɪsəbl/

serviceable

utilizable
Meaning
fit for use; usable; in working order
Example
The old bicycle is still serviceable despite its age.
La bicicleta vieja sigue siendo utilizable a pesar de su edad.
C1 noun /səˈbraɪəti/

sobriety

sobriedad
Meaning
the state of being sober; self-restraint and seriousness
Example
He has maintained his sobriety for five years.
Ha mantenido su sobriedad durante cinco años.
C1 adjective /ˈsaɪz.mɪk/

seismic

sísmico
Meaning
Relating to earthquakes or vibrations of the earth and its crust.
Example
The region is known for its seismic activity.
La región es conocida por su actividad sísmica.
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.
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 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.
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.
C1 adjective ˈskruː.pjʊ.ləs

scrupulous

escrupuloso
Meaning
Diligent, thorough, and extremely attentive to details; having moral integrity; acting in strict regard for what is considered right or proper.
Example
He is known for being scrupulous in his work.
Es conocido por ser escrupuloso en su trabajo.
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.
C1 adjective ˈsɒvrɪn

sovereign

soberano, supremo
Meaning
Possessing supreme or ultimate power; independent.
Example
The sovereign government has control over its currency.
El gobierno soberano tiene control sobre su moneda.
C1 adjective /ˈsɜːrvaɪl/ or /ˈsɜːrvəl/

servile

servil
Meaning
having or showing an excessive willingness to serve or please others
Example
His servile attitude annoyed his colleagues.
Su actitud servil molestaba a sus compañeros.
C1 verb sɪˈkwɛstər

sequester

aislar, esconder
Meaning
To isolate or hide away.
Example
The carbon captured by trees can be sequestered for years.
El carbono capturado por los árboles puede ser aislado durante años.
C1 adjective /səˈnɔːrəs/

sonorous

sonido profundo
Meaning
Deep, full, and rich in sound.
Example
The actor's sonorous voice filled the entire theater.
La voz sonorosa del actor llenó todo el teatro.
C1 noun /səˈlɛmnɪti/

solemnity

solemnidad
Meaning
the state or quality of being serious and dignified
Example
The ceremony was conducted with great solemnity.
La ceremonia se realizó con gran solemnidad.
C1 verb /sɪˈsiːd/

secede

secesionar
Meaning
To formally withdraw from a political or organizational union.
Example
Several states threatened to secede from the union.
Varios estados amenazaron con separarse de la unión.
C1 adjective ˈsɪŋ.krə.nəs

synchronous

sincrónico
Meaning
Existing or occurring at the same time.
Example
Synchronous learning involves live online classes.
El aprendizaje sincrónico implica clases en línea en vivo.
C1 adjective /sɪmˈplɪstɪk/

simplistic

excesivamente simplificado
Meaning
treating complex issues as if they were much simpler than they really are
Example
His explanation was too simplistic and ignored key details.
Su explicación fue demasiado simplificada e ignoró detalles clave.
C1 adjective /swɑːv/

suave

atractivo y refinado
Meaning
charming, confident, and elegant, often in a smooth or polished way
Example
He was a suave gentleman who impressed everyone at the party.
Era un caballero refinado que impresionó a todos en la fiesta.
C1 adjective /ˈsɪm.jʊ.leɪ.tɪd/

simulated

simulado
Meaning
Artificially created to look real but not actually real.
Example
The pilot trained in a simulated flight environment.
El piloto entrenó en un ambiente de vuelo simulado.
C1 verb /sɪndʒ/

singe

quemar ligeramente
Meaning
To burn something superficially or lightly, especially at the edges.
Example
The fire singed his eyebrows.
El fuego le quemó las cejas.
C1 adjective /ˈstɪndʒi/

stingy

tacaño
Meaning
unwilling to spend or give; miserly
Example
He is too stingy to buy a gift for his friend.
Es demasiado tacaño para comprar un regalo para su amigo.
C1 noun /sɪˈdʌk.ʃən/

Seduction

seducción; tentación
Meaning
the action of seducing someone; temptation to do something wrong
Example
He fell victim to the seduction of easy money.
Cayó víctima de la seducción del dinero fácil.
C1 adjective ˌsɪn.əˈdʒɪs.tɪk

synergistic

sinérgico
Meaning
Relating to the interaction of elements that when combined produce a greater effect than the sum of their individual effects.
Example
A synergistic effect occurs when nutrients work together.
Un efecto sinérgico ocurre cuando los nutrientes trabajan juntos.
C1 noun ˈsʌfrɪdʒ

suffrage

sufragio
Meaning
The right to vote in political elections; the principle of political representation.
Example
Universal suffrage was a key demand.
El sufragio universal fue una demanda clave.
C1 noun /ˌsɛlf ɪnˈdʌldʒəns/

self-indulgence

autoindulgencia
Meaning
The act of allowing oneself to enjoy pleasures or desires excessively.
Example
His weekend of self-indulgence included eating sweets and watching movies nonstop.
Su fin de semana de autoindulgencia incluyó comer dulces y ver películas sin parar.
C1 noun /ˈsaɪ.ən/

scion

descendiente
Meaning
a descendant of a wealthy, aristocratic, or influential family
Example
He is the scion of a wealthy industrialist family.
Él es el descendiente de una familia industrialista rica.
C1 adjective /ˈʃeɪp.ləs/

Shapeless

sin forma
Meaning
having no definite or well-defined shape or form
Example
The fog created a shapeless mass in the distance.
La niebla creó una masa sin forma a lo lejos.
C1 verb /ˈsælvɪdʒ/

salvage

salvar
Meaning
To save something from loss, damage, or destruction.
Example
They managed to salvage some goods from the fire.
Lograron salvar algunos bienes del incendio.
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.
C1 verb /sʌlk/

sulk

estar enojado
Meaning
to be silent and bad-tempered because you are angry or disappointed
Example
She sulked in her room after the argument.
Ella se enojó en su habitación después de la discusión.
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.
C1 adjective /ˈspɑːrtn/

spartan

espartano
Meaning
showing simplicity and lack of luxury; austere
Example
He lived in a spartan room with just a bed and a chair.
Vivió en una habitación espartana con solo una cama y una silla.
C1 adjective /seɪdʒ/

Sage

sabio; prudente; con buen juicio
Meaning
wise; showing wisdom from experience; prudent; having good judgment
Example
The sage advice from the elder helped solve the problem.
El sabio consejo del anciano ayudó a resolver el problema.
C1 verb /səˈkʌm/

succumb

sucumbir
Meaning
To give in to pressure, temptation, or illness; to yield or fail to resist.
Example
He finally succumbed to his illness after a long struggle.
Finalmente sucumbió a su enfermedad después de una larga lucha.
C1 noun /ˈskruːpəl/

scruple

escrúpulo
Meaning
A moral or ethical consideration that restrains actions.
Example
He had no scruples about lying to get ahead.
Él no tenía escrúpulos para mentir y avanzar.
C1 verb /ˈskævɪndʒ/

scavenge

buscar entre la basura
Meaning
to search through waste or discarded material to find useful items
Example
The children scavenged for food in the garbage dump.
Los niños scavengaron para encontrar comida en el basurero.
C1 noun /ˈskwɒlər/

squalor

miseria
Meaning
the state of being extremely dirty and unpleasant, especially due to poverty or neglect
Example
They lived in squalor without basic facilities.
Vivían en la miseria sin instalaciones básicas.
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 /ˈstrɑːtəm/

stratum

estrato
Meaning
a layer or level of material, or a social class in society
Example
The upper stratum of society enjoyed privileges not available to others.
La capa superior de la sociedad disfrutaba de privilegios que no estaban disponibles para los demás.
C1 noun /ʃæk/

Shack

choza
Meaning
a small, crudely built dwelling; a poorly constructed building
Example
The fisherman lived in a small shack near the beach.
El pescador vivía en una pequeña choza cerca de la playa.
C1 verb/noun /ˈswæɡ.ər/

swagger

presunción
Meaning
To walk or behave in a very confident and arrogant way.
Example
He swaggered into the room as if he owned the place.
Entró en la habitación como si fuera dueño del lugar.
C1 verb/noun /stuːp/

stoop

felicidad
Meaning
To bend one's body forward and downward; also a small porch or staircase at the entrance of a house
Example
He had to stoop to pick up the coin.
No pudo esconder su felicidad cuando recibió el premio.
C1 noun /ˌstætɪˈstɪʃən/

statistician

estadístico
Meaning
A person who specializes in collecting, analyzing, and interpreting numerical data.
Example
The statistician presented the survey results with great clarity.
El estadístico presentó los resultados de la encuesta con gran claridad.
C1 noun /ˈstɒpɪdʒ/

stoppage

parada; detención
Meaning
The act of stopping or ceasing; a halt in operation or activity
Example
The sudden stoppage of the train caused delays for all passengers.
La parada repentina del tren causó retrasos a todos los pasajeros.
C1 verb /səbˈstænʃieɪt/

substantiate

substanciar
Meaning
To provide evidence to support or prove the truth of something.
Example
The lawyer worked to substantiate the claims with solid evidence.
El abogado trabajó para substanciar las reclamaciones con pruebas sólidas.
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.
C1 adjective /ˈsɒljʊbəl/

soluble

soluble
Meaning
able to be dissolved, especially in water
Example
Sugar is soluble in water.
El azúcar es soluble en agua.
C1 adjective /ˈspraɪtli/

sprightly

vivaz
Meaning
full of energy and life; lively
Example
The sprightly old man danced with joy at the wedding.
El hombre vivaz bailó con alegría en la boda.
C1 adjective /ˈseɪ.li.ənt/

salient

importante, prominente o llamativo
Meaning
Most important, prominent, or noticeable
Example
The report highlighted the salient points of the discussion.
El informe destacó los puntos más importantes de la discusión.
C1 noun /ˈstreɪnər/

Strainer

colador
Meaning
a device having holes punched in it or made of crossed wires for separating solid matter from a liquid
Example
Use a strainer to drain the pasta water.
Usa un colador para drenar el agua de la pasta.
C1 noun /ˌsʌpəˈzɪʃən/

supposition

suposición
Meaning
An assumption or belief that something is true without certain proof.
Example
His plan was based on the supposition that the market would recover quickly.
Su plan estaba basado en la suposición de que el mercado se recuperaría rápidamente.
C1 adjective /ˈspʌndʒi/

Spongy

esponjoso
Meaning
soft and full of holes like a sponge; porous
Example
The cake had a light and spongy texture.
El pastel tenía una textura ligera y esponjosa.
C1 noun /sʌˈmeɪʃən/

summation

suma, resumen
Meaning
The process of adding things together; a summary of points.
Example
The lawyer gave a powerful summation of the case.
El abogado dio un poderoso resumen del caso.
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 /ˈʃeɪvɪŋ/

shaving

afeitado
Meaning
the act of removing hair with a razor; a thin strip or piece shaved from something
Example
He bought a new cream for shaving.
Compró una nueva crema para afeitarse.
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.
C1 noun /ˌsɒl.jʊˈbɪləti/

solubility

solubilidad
Meaning
The ability of a substance to dissolve in a solvent.
Example
The solubility of salt in water is high.
La solubilidad de la sal en agua es alta.
C1 noun /ˈskævɪndʒər/

scavenger

carroñero / recolector de basura
Meaning
an animal or person that feeds on dead or discarded material
Example
Vultures are natural scavengers that clean up the environment.
Los buitres son escavengers naturales que limpian el medio ambiente.
C1 adjective /ˌsʌb.təˈreɪ.ni.ən/

subterranean

subterráneo
Meaning
Existing, occurring, or done under the earth's surface.
Example
Subterranean water sources help sustain agriculture.
Las fuentes de agua subterráneas ayudan a sostener la agricultura.
C1 adjective /ˈstæɡ.nənt/

Stagnant

estancado; inmóvil; sin desarrollo
Meaning
not moving or flowing; showing no activity or development
Example
The stagnant water in the pond was covered with algae.
El agua estancada en el estanque estaba cubierta de algas.
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 verb /ʃʌn/

Shun

evitar
Meaning
to deliberately avoid or stay away from someone or something
Example
He shuns public attention and prefers privacy.
Él evita la atención pública y prefiere la privacidad.
C1 verb /ˈstoʊnwɔːl/

stonewall

bloquear
Meaning
To delay or block progress by refusing to cooperate or answer
Example
The witness tried to stonewall during the investigation.
El testigo intentó hacer stonewall durante la investigación.
C1 verb /ˈsætʃəˌreɪt/

saturate

saturar
Meaning
to fill completely with something until no more can be absorbed
Example
The heavy rain saturated the ground within minutes.
La lluvia intensa saturó el suelo en minutos.
C1 adjective /ˌsɛrənˈdɪpɪtəs/

serendipitous

afortunado inesperado
Meaning
Occurring or discovered by chance in a happy or beneficial way.
Example
Their meeting at the café was purely serendipitous.
Su encuentro en el café fue completamente afortunado.
C1 adjective /ˈsʌmp.tʃu.əs/

sumptuous

suntuoso
Meaning
Splendid and expensive-looking; luxurious.
Example
The guests were treated to a sumptuous banquet.
Los invitados fueron tratados con un banquete suntuoso.
C1 adjective /sɪˈmɛtrɪkəl/

symmetrical

simétrico
Meaning
having parts on either side that match or are the same in shape, size, or arrangement
Example
The artist designed a symmetrical pattern on the floor.
El artista diseñó un patrón simétrico en el suelo.
C1 noun/adjective /ˈstɜː.lɪŋ/

sterling

moneda británica / excelente
Meaning
British money, especially pounds; of excellent quality.
Example
She was praised for her sterling work on the project.
Fue elogiada por su excelente trabajo en el proyecto.
C1 adjective /səbˈsɜːviənt/

subservient

subserviente
Meaning
prepared to obey others unquestioningly; less important than something else
Example
She was too subservient to challenge his decision.
Ella era demasiado sumisa para desafiar su decisión.
C1 noun /ˈseɪ.tən/

Satan

Satanás
Meaning
the chief evil spirit; the Devil in Christian and Islamic belief
Example
According to religious texts, Satan tempts people to sin.
Según los textos religiosos, Satanás tienta a las personas a pecar.
C1 noun /ˈsɪləbəl/

syllable

sílaba
Meaning
A unit of pronunciation having one vowel sound, with or without surrounding consonants, forming the whole or part of a word.
Example
The word 'computer' has three syllables.
La palabra 'computadora' tiene tres sílabas.
C1 noun /ʃoʊl/

shoal

cardumen
Meaning
a large group of fish swimming together; a shallow place in water
Example
We saw a shoal of fish near the coast.
Vimos un cardumen de peces cerca de la costa.
C1 verb /səˈlɪsɪt/

solicit

solicitar
Meaning
to ask for or try to obtain something from someone
Example
The charity is soliciting donations for flood victims.
La caridad está solicitando donaciones para las víctimas de las inundaciones.
C1 adjective /suːˈpɜːrlətɪv/

superlative

superlativo
Meaning
Of the highest quality or degree; expressing the extreme form of an adjective or adverb.
Example
Her performance was superlative, earning her a standing ovation.
Su desempeño fue superlativo, ganándose una ovación de pie.
C1 noun /səbˈdʒɛkʃən/

subjection

subyugación
Meaning
the act of bringing someone or something under control or domination
Example
The people suffered under the subjection of a cruel ruler.
El pueblo sufrió bajo la subyugación de un gobernante cruel.
C1 adjective /ˈsɪlkən/

Silken

de seda; suave; brillante;
Meaning
made of silk; smooth and soft like silk
Example
She wore a beautiful silken dress to the party.
Ella llevaba un hermoso vestido de seda a la fiesta.
C1 noun /sɪˈnɪləti/

senility

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

scour

fregar / buscar exhaustivamente
Meaning
to clean or brighten the surface of something by scrubbing; to search thoroughly
Example
She scoured the kitchen until it shone.
Ella fregó la cocina hasta que brilló.
C1 verb /ˌsuːpərˈsiːd/

supersede

reemplazar
Meaning
To replace or take the place of something because it is more modern or effective.
Example
This new law will supersede the old regulations.
Esta nueva ley reemplazará las viejas regulaciones.
C1 adjective /ˈskɛtʃi/

sketchy

incompleto
Meaning
not thorough or detailed; suspicious or unsafe
Example
The details of the project were still sketchy.
Los detalles del proyecto aún estaban incompletos.