Reciprocal
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C1 adjective /rɪˈsɪ.prə.kəl/

Reciprocal

recíproco; mutuo; compartido por ambas partes;
Meaning
given or done in return; mutual; shared equally by both parties;
Example
The two countries have a reciprocal trade agreement.
Los dos países tienen un acuerdo comercial recíproco.
C1 noun /rɪˈbʌtəl/

rebuttal

refutación
Meaning
a statement or argument made to oppose or disprove another
Example
Her rebuttal was clear and convincing.
Su refutación fue clara y convincente.
C2 noun /rɪˈfrækʃən/

refraction

refracción
Meaning
The bending of light, sound, or other waves when they pass from one medium to another of different density.
Example
The refraction of light in water makes objects appear bent.
La refracción de la luz en el agua hace que los objetos parezcan doblados.
C2 verb /rɪˈdaʊnd/

redound

contribuir
Meaning
to contribute greatly to a result or consequence, usually beneficial
Example
His hard work will redound to the success of the company.
Su arduo trabajo contribuirá al éxito de la empresa.
B2 noun /ˌrɛvəˈleɪʃən/

revelation

revelación
Meaning
A surprising and previously unknown fact, especially one made known in a dramatic way.
Example
The book was full of shocking revelations about the politician.
El libro estaba lleno de revelaciones impactantes sobre el político.
C1 verb /ˈrɪdɪkjuːl/

ridicule

ridiculizar
Meaning
To make fun of someone or something in a cruel or dismissive way.
Example
He was ridiculed for his strange ideas.
Fue ridiculizado por sus ideas extrañas.
C1 noun /rɪˌsɛptɪˈvɪti/

receptivity

receptividad
Meaning
The ability or willingness to receive something, especially signals or stimuli.
Example
Her receptivity to new ideas helped improve the project.
Su receptividad a nuevas ideas ayudó a mejorar el proyecto.
C1 noun /ˈrɛtrəsˌpɛkt/

retrospect

retroceso
Meaning
the act of looking back on or reviewing past events
Example
In retrospect, the decision seemed unwise.
En retrospectiva, la decisión parecía imprudente.
C2 noun /rɪˈfrɪndʒənsi/

refringency

refringencia
Meaning
The ability of a substance to bend light; refractive power.
Example
Glass has a higher refringency than water.
El vidrio tiene una mayor refringencia que el agua.
C2 noun /ˈrɛkjʊzənt/

recusant

refractario
Meaning
a person who refuses to submit to authority or comply with rules
Example
The recusant opposed the new law.
El refractario se opuso a la nueva ley.
C1 noun/verb /rɪˈpoʊz/

repose

reposo
Meaning
a state of rest, sleep, or tranquility; to rest or lie in a peaceful position
Example
After the long journey, she sought repose in the quiet garden.
Después del largo viaje, ella buscó reposo en el jardín tranquilo.
B1 noun /ˈrʌbər/

rubber

felicidad
Meaning
a tough elastic substance made from the latex of tropical plants or synthetically, used for making tires, boots, and other products.
Example
The tires are made of natural rubber.
Ella no pudo ocultar su felicidad cuando recibió el premio.
B2 noun /ˈrɛnəˌsɑːns/

renaissance

renacimiento
Meaning
a revival of art, culture, or learning; a period of renewed interest and growth
Example
The city experienced a cultural renaissance during the 1990s.
La ciudad experimentó un renacimiento cultural durante los años 90.
B2 noun /ˈraɪfəl/

Rifle

rifle
Meaning
a gun with a long barrel that is fired from the shoulder
Example
The soldier carried a rifle during the mission.
El soldado llevaba un rifle durante la misión.
C1 noun /rɪˈsaɪtər/

reciter

recitador
Meaning
a person who recites or repeats something aloud from memory, especially poetry, prayers, or formal texts
Example
The reciter delivered the poem with clarity and emotion.
El recitador presentó el poema con claridad y emoción.
B1 verb /rɪˈliːs/

release

liberar
Meaning
to set free; to allow something to escape or go away
Example
The prisoner was released after ten years.
El prisionero fue liberado después de diez años.
B2 verb /ˌriːjuˈnaɪt/

reunite

reunir
Meaning
to bring together again after separation
Example
The family was reunited after many years.
La familia se reunió después de muchos años.
C1 verb /ˈrætɪfaɪ/

ratify

ratificar
Meaning
to approve or confirm something officially, usually by law or formal consent
Example
The government ratified the trade agreement.
El gobierno ratificó el acuerdo comercial.
C1 adjective /ˌrɛtroʊˈæktɪv/

retroactive

retroactivo
Meaning
applying to a period before it was enacted or established
Example
The new law was made retroactive to cover past cases.
La nueva ley se hizo retroactiva para cubrir los casos pasados.
C2 verb /rɪˈvaɪl/

revile

despreciar
Meaning
to criticize in an abusive or angrily insulting manner
Example
The politician was reviled by the public for his corruption.
El político fue despreciado por el público debido a su corrupción.
B1 adjective /rɪˈkwaɪəd/

required

requerido
Meaning
necessary or compulsory
Example
A visa is required to enter the country.
Se requiere una visa para entrar al país.
C1 adjective /ˈrɛvərənt/

reverent

reverente
Meaning
Showing deep and solemn respect.
Example
They listened to the speech in a reverent silence.
Escucharon el discurso en un silencio reverente.
B2 noun, verb /ˈrætəl/

rattle

traquetear; sonajero
Meaning
to make a rapid series of short, sharp sounds; a device or object that makes such a sound
Example
The loose window began to rattle in the strong wind.
La ventana suelta empezó a traquetear con el viento fuerte.
C1 noun /ˌræʃəˈnæl/

rationale

razón subyacente
Meaning
the underlying reason or explanation for something
Example
The rationale behind his decision was clearly explained.
La razón detrás de su decisión fue claramente explicada.
B2 adverb /rɪˈɡɑrdləs/

regardless

sin importar la situación
Meaning
without paying attention to the current situation or condition
Example
She will go to the party regardless of the weather.
Ella irá a la fiesta sin importar el clima.
C1 noun /ˈrʌp.tʃər/

Rupture

ruptura; quiebre de relaciones
Meaning
breaking or bursting apart; breakdown of relations
Example
The rupture in the pipeline caused a massive oil spill.
La ruptura en la tubería causó un gran derrame de petróleo.
B2 verb /rɪˈvaɪv/

revive

revivir
Meaning
To bring back to life, consciousness, or activity.
Example
The paramedics managed to revive the unconscious man.
Los paramédicos lograron revivir al hombre inconsciente.
C1 adjective /ˈreɪ.si/

racy

picante
Meaning
Lively, entertaining, or slightly shocking (especially in a sexual way).
Example
The novel was full of racy dialogues.
La novela estaba llena de diálogos picantes.
C1 noun /ˈrɛpərˌtɔːri/

repertory

repertorio
Meaning
A collection of works that a company, performer, or institution regularly performs; also a storehouse of information or skills.
Example
The theater has a repertory of classic plays.
El teatro tiene un repertorio de obras clásicas.
B2 noun /ˈrerəti/

Rarity

la condición de ser raro; algo poco común o escaso
Meaning
the state of being rare; something that is uncommon or scarce
Example
The antique vase was a rarity worth thousands of dollars.
El jarrón antiguo era una rareza que valía miles de dólares.
C2 adjective /rɪˈfræktəri/

refractory

refractario
Meaning
Stubborn or resistant to control, authority, or treatment.
Example
The refractory child refused to follow the teacher's instructions.
El niño refractario se negó a seguir las instrucciones del maestro.
C1 noun /rɪˈteɪnər/

retainer

anticipo / retenedor
Meaning
a fee paid in advance to secure someone's services, or a device that holds something in place
Example
The lawyer asked for a retainer before taking the case.
El abogado pidió un anticipo antes de tomar el caso.
B2 verb /rɪp/

rip

rasgar
Meaning
to tear something quickly or violently
Example
He accidentally ripped his shirt on the fence.
Él accidentalmente rasgó su camisa en la cerca.
B2 adverb /rɪˈpɔːtɪdli/

reportedly

según se dice
Meaning
according to what is said or believed, although not confirmed
Example
The company has reportedly agreed to the new terms.
La empresa ha acordado reportedly los nuevos términos.
B2 verb /rɪˈzɪst/

resist

resistir
Meaning
to oppose or fight against; to withstand
Example
He could not resist the temptation.
Él no pudo resistir la tentación.
C1 verb /ˌrekəˈlekt/

recollect

recordar
Meaning
to remember something; to recall from memory
Example
I can't recollect where I put my keys.
No puedo recordar dónde dejé mis llaves.
B2 noun /ˈreɪ.dɑːr/

Radar

radar
Meaning
a system for detecting the presence, direction, distance of aircraft, ships by sending out radio waves
Example
The radar detected an unknown aircraft approaching the base.
El radar detectó un avión desconocido acercándose a la base.
C1 noun rɪˈdɛmpʃən

redemption

redención
Meaning
The action of saving or being saved from sin, error, or evil.
Example
The story highlights the theme of redemption.
La historia destaca el tema de la redención.
C1 adjective /rɪˈvenʒ.fəl/

Revengeful

vengativo
Meaning
seeking or desiring revenge; vindictive
Example
He became revengeful after being betrayed by his friend.
Se volvió vengativo después de ser traicionado por su amigo.
B2 noun /ˌrɛprɪzɛnˈteɪʃən/

representation

representación
Meaning
the action of speaking or acting on behalf of someone or something
Example
Her representation of the team was impeccable.
Su representación del equipo fue impecable.
A2 adverb /ˈrɛɡjələrli/

regularly

regularmente
Meaning
at regular intervals; in a regular manner
Example
She exercises regularly to stay healthy.
Ella hace ejercicio regularmente para mantenerse saludable.
C2 noun /rɪˈdʒɔɪndər/

rejoinder

réplica
Meaning
a quick or witty reply; a response to a remark or argument
Example
His sharp rejoinder silenced the crowd.
Su aguda réplica silenció a la multitud.
B2 verb /ˈrɛkən/

reckon

suponer
Meaning
To think, believe, or expect something; to calculate or estimate.
Example
I reckon it will rain later today.
Yo calculo que lloverá más tarde hoy.
C2 noun /ruːθ/

ruth

compasión
Meaning
A feeling of pity, compassion, or sorrow.
Example
He felt no ruth for the people he had betrayed.
Él no sintió ninguna compasión por las personas a las que había traicionado.
C1 adjective /ˈrʌs.tɪk/

Rustic

sencillo y no sofisticado; relacionado con áreas rurales
Meaning
simple and unsophisticated; relating to rural areas
Example
The rustic cottage had wooden beams and a thatched roof.
La cabaña rústica tenía vigas de madera y un techo de paja.
C1 verb /riˈɪtəreɪt/

reiterate

reiterar
Meaning
To say something again or repeatedly for emphasis or clarity.
Example
The teacher reiterated the importance of honesty.
El maestro reiteró la importancia de la honestidad.
B2 adverb /rɪˈlʌk.tənt.li/

Reluctantly

de mala gana
Meaning
in an unwilling manner; with hesitation or resistance
Example
She reluctantly agreed to help with the project.
Ella aceptó ayudar con el proyecto de mala gana.
C2 noun /ˌriːkruːˈdɛsəns/

recrudescence

recrudecimiento
Meaning
a new outbreak or revival of something that had subsided, especially an undesirable condition
Example
Health officials warned of a recrudescence of measles in several districts.
Los funcionarios de salud advirtieron sobre un brote de sarampión en varios distritos.
C1 noun /rəʊˈbɒt.ɪk ˈsɜː.dʒər.i/

robotic surgery

cirugía robótica
Meaning
Surgery performed with the assistance of robotic systems to enhance precision and reduce invasiveness.
Example
Robotic surgery enhances precision in complex procedures.
La cirugía robótica mejora la precisión en procedimientos complejos.
C1 noun /ˈrɛl.ɪk/

relic

reliquia
Meaning
an object surviving from an earlier time, often of historical or religious interest
Example
The museum displayed relics from the ancient civilization.
El museo exhibió reliquias de la antigua civilización.
C1 verb /ˈrɛzəneɪt/

resonate

resonar
Meaning
To produce or be filled with a deep, full, and reverberating sound; to evoke a feeling or memory.
Example
Her words resonated with the audience.
Sus palabras resonaron con la audiencia.
C1 noun /ˈrep.lɪ.kə/

Replica

réplica
Meaning
an exact copy or model of something, especially one on a smaller scale
Example
The museum displayed a perfect replica of the ancient statue.
El museo exhibió una réplica perfecta de la estatua antigua.
C1 noun /ˌriː.əˈdʒʌst.mənt/

readjustment

reajuste
Meaning
The act of changing or correcting something again to make it suitable or balanced.
Example
After moving to a new city, he went through a period of readjustment.
Después de mudarse a una nueva ciudad, él pasó por un periodo de reajuste.
B1 adjective /roʊˈmæn.tɪk/

Romantic

romántico
Meaning
relating to love; idealistic; dreamy
Example
They enjoyed a romantic dinner by candlelight.
Disfrutaron de una cena romántica a la luz de las velas.
B2 verb /reɪl/

rail

quejarse
Meaning
to complain or protest strongly about something
Example
He railed against the unfair decision.
Él se quejó contra la decisión injusta.
A2 noun /ˈriːdər/

reader

lector
Meaning
a person who reads or who is capable of reading
Example
She is a fast reader, finishing books in a day.
Ella es una lectora rápida, termina libros en un día.
B1 adjective /ˈrel.ə.vənt/

Relevant

relevante
Meaning
closely connected or appropriate to what is being discussed; pertinent
Example
Please provide only relevant information for this discussion.
Por favor, proporcione solo información relevante para esta discusión.
B2 noun /rɪˈfreʃ.mənt/

Refreshment

refrigerio
Meaning
food and drink that is served as a light meal; something that refreshes
Example
We served light refreshments after the meeting.
Servimos refrigerios ligeros después de la reunión.
B2 noun /ˈreɪn.dʒər/

ranger

guardabosques
Meaning
A person responsible for protecting and managing forests, parks, or natural areas.
Example
The park ranger guided the tourists through the forest trail.
El guardabosques del parque guió a los turistas por el sendero del bosque.
C1 noun/verb /rɪˈpriːz/

reprise

repetición
Meaning
A repetition or return to an earlier theme, role, or action.
Example
The actor reprised his role in the sequel.
El actor repitió su papel en la secuela.
B2 noun rɪˈsɛʃ.ən

recession

recesión
Meaning
A period of temporary economic decline during which trade and industrial activity are reduced.
Example
The country faced a severe recession due to the financial crisis.
El país enfrentó una recesión severa debido a la crisis financiera.
C2 noun /rɪˈsɪdɪvɪst/

recidivist

recidivista
Meaning
A person who repeatedly commits crimes, especially after having been punished.
Example
The police identified him as a recidivist who had been arrested several times before.
La policía lo identificó como un recidivista que había sido arrestado varias veces antes.
C1 noun ˌrev.əˈluː.ʃən.ər.i ɪˈnɪʃ.ə.tɪv

revolutionary initiative

iniciativa revolucionaria
Meaning
A groundbreaking action or plan that brings about significant change or transformation.
Example
The revolutionary initiative promotes sustainable energy.
La iniciativa revolucionaria promueve la energía sostenible.
C2 adjective /rɪˈmiːdiəbl/

remediable

remediable
Meaning
capable of being corrected or cured
Example
The mistake was serious but still remediable.
El error fue grave pero aún remediable.
B1 noun, verb /ˈrɒkɪt/

rocket

felicidad
Meaning
a missile or vehicle propelled by a rocket engine; to increase or move very quickly
Example
The company’s profits rocketed after the new product launch.
No pudo ocultar su felicidad cuando recibió el premio.
B1 verb /rɪˈper/

repair

reparar
Meaning
to fix something that is broken or damaged
Example
The mechanic will repair the car's engine tomorrow.
El mecánico reparará el motor del coche mañana.
B2 verb /ˌriː.ɪnˈfɔːrs/

reinforce

fortalecer
Meaning
To strengthen or support something with additional material, people, or effort.
Example
The teacher used examples to reinforce the lesson.
El maestro usó ejemplos para reforzar la lección.
B2 verb /ˌriːəˈreɪndʒ/

rearrange

reorganizar
Meaning
to change the order or position of something
Example
She decided to rearrange the furniture in her living room.
Ella decidió reorganizar los muebles en su sala de estar.
C1 verb /ˌriːɪmˈbɜːrs/

reimburse

reembolsar
Meaning
to pay back money to someone who has spent it or lost it
Example
The company reimbursed him for travel expenses.
La empresa le reembolsó los gastos de viaje.
B1 adjective /rɪˈmeɪnɪŋ/

remaining

restante
Meaning
still existing or left after others are gone or dealt with
Example
There were only a few remaining tickets for the concert.
Quedaban solo unos pocos boletos para el concierto.
B2 noun /rʌʃ/

Rush

prisa; apresuramiento
Meaning
a sudden quick movement toward something; a period of great activity or demand; hurry
Example
There was a rush to buy tickets for the concert.
Hubo una prisa por comprar boletos para el concierto.
C2 verb /rɪˈkjʊə/

recure

curar de nuevo
Meaning
to cure again; to remedy a second time
Example
The doctor had to recure the wound after it reopened.
El doctor tuvo que curar nuevamente la herida después de que se reabriera.
C2 adjective /rɪˈdaʊ.tə.bəl/

redoubtable

temible/respetable
Meaning
formidable, especially as an opponent; inspiring fear or respect
Example
She was a redoubtable leader who commanded respect from all.
Ella era una líder temible que se ganó el respeto de todos.
C2 noun /ˈrɛd.ə.ləns/

redolence

fragancia
Meaning
a pleasant smell or the quality of suggesting something strongly
Example
The redolence of jasmine filled the evening air.
La fragancia del jazmín llenó el aire de la tarde.
C1 noun /ˌrek.ənˌsɪl.iˈeɪ.ʃən/

reconciliation

reconciliación
Meaning
The restoration of friendly relations; the action of making one view or belief compatible with another.
Example
The peace treaty was a major step toward reconciliation.
El tratado de paz fue un paso importante hacia la reconciliación.
A2 noun /rɒk/

rock

roca
Meaning
a large, solid piece of mineral matter
Example
The mountain was made of solid rock.
La montaña estaba hecha de roca sólida.
A2 verb /rɪˈplaɪ/

reply

responder
Meaning
to give an answer; to respond
Example
She replies to emails quickly.
Ella responde a los correos electrónicos rápidamente.
B1 adjective /rɪˈpiː.tɪd/

Repeated

repetido; que ocurre varias veces
Meaning
done again; happening again; occurring multiple times
Example
He made repeated attempts to contact her.
Él hizo intentos repetidos para contactarla.
A2 noun /ˈriːdɪŋ/

reading

lectura
Meaning
the action or skill of reading
Example
Reading is one of my favorite hobbies.
Leer es uno de mis pasatiempos favoritos.
B2 noun /ˈrɛzərvwɑːr/

reservoir

embalse
Meaning
A large natural or artificial lake used as a source of water supply.
Example
The city built a new reservoir to ensure enough drinking water for its residents.
La ciudad construyó un nuevo embalse para garantizar suficiente agua potable para sus residentes.
B2 verb /ˌriːprəˈdjuːs/

reproduce

reproducir, procrear
Meaning
To make a copy of something; to generate offspring.
Example
Many animals reproduce rapidly in favorable conditions.
Muchos animales se reproducen rápidamente en condiciones favorables.
B1 noun /reɪ/

ray

rayo
Meaning
a narrow beam of light, heat, or radiation
Example
A ray of sunlight broke through the clouds.
Un rayo de luz del sol rompió a través de las nubes.
C2 noun /rɪˈpoʊst/

riposte

replica aguda
Meaning
a quick and clever reply to criticism or an insult
Example
Her sharp riposte left everyone in silence.
Su aguda réplica dejó a todos en silencio.
B2 noun /ˌreɡ.jʊˈlær.ɪ.ti/

Regularity

regularidad
Meaning
the quality of being regular; occurring at fixed intervals or in a consistent pattern
Example
The regularity of his exercise routine helped him stay healthy.
La regularidad de su rutina de ejercicios lo ayudó a mantenerse saludable.
C1 noun /rɪˈpɔːrtɪʒ/

reportage

reportaje
Meaning
the act of reporting news or describing events in the media
Example
The magazine is known for its detailed reportage of political issues.
La revista es conocida por su detallado reportaje de temas políticos.
B2 verb /reɪp/

rape

violación
Meaning
to force someone to have sexual intercourse without their consent
Example
The law strictly punishes those who commit rape.
La ley castiga estrictamente a aquellos que cometen violación.
C1 noun rɪˈfaɪnmənt

refinement

refinamiento
Meaning
The process of removing impurities or unwanted elements from a substance.
Example
His manners showed a refinement that made him stand out in any crowd.
Sus modales mostraron un refinamiento que lo hizo destacar en cualquier multitud.
B2 noun ˈruθləs ˌkɑmpəˈtɪʃən

ruthless competition

competencia despiadada
Meaning
Fierce and merciless rivalry or contest, without pity or compassion.
Example
Ruthless competition for power leads to societal issues.
La competencia despiadada por el poder lleva a problemas sociales.
B2 noun ˌriːfɔːˈreɪʃən

reforestation

reforestación
Meaning
The natural or intentional restocking of existing forests and woodlands that have been depleted.
Example
Reforestation efforts are crucial to restoring ecosystems.
Los esfuerzos de reforestación son cruciales para restaurar los ecosistemas.
B2 verb /rɪˈkɔːl/

recall

recordar
Meaning
to bring (a memory, fact, or situation) back into one's mind
Example
I can't recall the last time we met.
No puedo recordar la última vez que nos encontramos.
C1 verb /rɪˈkɔɪl/

recoil

retroceder
Meaning
To suddenly spring back in fear, horror, or from force such as a gun's kickback.
Example
She recoiled at the sight of the snake.
Ella se encogió al ver la serpiente.
C2 noun /ræŋˈɡuːn ˈkriːpər/

Rangoon creeper

Rangoon creeper
Meaning
A climbing vine with fragrant flowers that change color from white to pink to red
Example
The Rangoon creeper covered the entire fence with its sweet-smelling flowers.
El Rangoon creeper cubrió toda la cerca con sus flores de fragancia dulce.
A2 noun rɪˈspɛkt

respect

respeto
Meaning
A feeling of deep admiration for someone or something.
Example
We should show respect to the freedom fighters.
Debemos mostrar respeto a los luchadores por la libertad.
C1 adjective /ˈrɔːkəs/

raucous

ruidoso, estridente
Meaning
loud, harsh, and unpleasant sound or behavior
Example
The crowd became raucous after the team scored.
La multitud se volvió ruidosa después de que el equipo anotó.
C2 adjective /raɪˈpɛə.ri.ən/

riparian

relativo o situado en las orillas de un río u otro cauce de agua
Meaning
Relating to or situated on the banks of a river or other watercourse.
Example
Riparian vegetation helps prevent soil erosion along rivers.
La vegetación ribereña ayuda a prevenir la erosión del suelo a lo largo de los ríos.
C1 adjective, noun /rɪˈsiːvəbl/

receivable

cobrable
Meaning
Money that is owed to a company and is expected to be paid.
Example
The company's receivables increased significantly this quarter.
Los cobros de la empresa aumentaron significativamente este trimestre.
B2 verb rɪˈzaɪn

resign

renunciar
Meaning
Voluntarily leave a job or other position.
Example
Ministers were forced to resign.
Los ministros fueron obligados a renunciar.
C2 noun /ˈreɪmənt/

raiment

atuendo
Meaning
clothing, especially fine or formal wear
Example
The king wore royal raiment during the ceremony.
El rey usó atuendo real durante la ceremonia.
B1 noun /rɪˈkwɛst/

request

solicitud
Meaning
a formal or polite demand for something
Example
She made a request for additional time to complete the project.
Ella hizo una solicitud de tiempo adicional para completar el proyecto.
C2 noun /ˈræp.aɪn/

rapine

saqueo
Meaning
the violent seizure of someone's property
Example
The war was marked by rapine and destruction.
La guerra estuvo marcada por el saqueo y la destrucción.
B2 noun /roʊˈteɪʃən/

Rotation

rotación; giro; rotación del eje
Meaning
the action of rotating around an axis or center; a single turn
Example
The Earth's rotation takes 24 hours to complete.
La rotación de la Tierra tarda 24 horas en completarse.
B2 noun /rɪˈmaɪndər/

reminder

recordatorio
Meaning
something that helps you remember a fact, event, or action that you need to do or recall
Example
He set a reminder to call his mother on her birthday.
Él configuró un recordatorio para llamar a su madre en su cumpleaños.
C2 adjective /rɪˈdjuːsəbl̩/

reducible

reducible
Meaning
capable of being simplified, lessened, or made smaller
Example
The problem is complex but reducible to a few basic principles.
El problema es complejo pero reducible a unos pocos principios básicos.
C1 adjective /ræpt/

Rapt

absorto
Meaning
completely fascinated or absorbed by what one is seeing or hearing
Example
The children listened with rapt attention to the storyteller.
Los niños escucharon con atención absorta al cuentacuentos.
C2 adjective /rɪˈfrɪndʒənt/

refringent

refractante
Meaning
Capable of refracting light or other waves.
Example
The refringent properties of the crystal bent the light into a spectrum.
Las propiedades refractantes del cristal doblaron la luz en un espectro.
C1 noun /rɪˈpɛərə/

repairer

reparador
Meaning
a person whose job is to fix damaged or broken things
Example
The repairer fixed the broken washing machine quickly.
El reparador arregló la lavadora rota rápidamente.
C1 verb /ˈræn.də.maɪz/

randomize

aleatorizar
Meaning
To make something happen in a random order or manner.
Example
The software can randomize the order of questions.
El software puede aleatorizar el orden de las preguntas.
A1 noun /ruːm/

room

habitación
Meaning
A space within a building enclosed by walls, floor, and ceiling
Example
She decorated her room with bright colors.
Ella decoró su habitación con colores brillantes.
B2 noun /ˌrek.riˈeɪ.ʃən/

Recreation

ocio; el proceso de hacer algo existir de nuevo
Meaning
an activity that is done for enjoyment; the process of making something exist again
Example
The park provides recreation facilities for children and adults.
El parque ofrece instalaciones de recreación para niños y adultos.
B2 noun /ˈreɪsɪzəm/

racism

racismo
Meaning
the belief that some races are superior to others, leading to unfair treatment or prejudice
Example
The organization works to eliminate racism in all forms.
La organización trabaja para eliminar el racismo en todas sus formas.
C2 noun /rɪˈɡætə/

regatta

regata
Meaning
A sporting event consisting of a series of boat or yacht races.
Example
The annual regatta attracted competitors from around the world.
La regata anual atrajo a competidores de todo el mundo.
B1 noun /rɪˈsɜːtʃə(r)/

researcher

investigador
Meaning
a person who conducts research
Example
The researcher published her findings in a scientific journal.
El investigador publicó sus hallazgos en una revista científica.
B1 noun /rɪˈkwaɪə(r)mənt/

requirement

requisito
Meaning
something that is necessary or demanded
Example
The job has specific educational requirements.
El trabajo tiene requisitos educativos específicos.
B2 adjective /ˈrʌs.ti/

Rusty

oxidado; fuera de práctica; afectado por la falta de práctica reciente
Meaning
affected by rust; out of practice; impaired by lack of recent practice
Example
My piano skills are rusty after not playing for years.
Mis habilidades en el piano están oxidadas después de no tocar durante años.
C2 noun /riːm/

ream

resma
Meaning
A large quantity of paper (typically 500 sheets); informally, a large amount of something.
Example
The office ordered ten reams of paper.
La oficina ordenó diez resmas de papel.
C1 noun /ˈrɛt.ər.ɪk/

rhetoric

el arte de hablar o escribir de manera efectiva o persuasiva
Meaning
The art of effective or persuasive speaking or writing; skillful use of language to influence others.
Example
Political leaders often use rhetoric to influence people.
Los líderes políticos a menudo utilizan la retórica para influir en la gente.
A2 adjective /ˈreɡ.jə.lər/

Regular

regular
Meaning
happening at fixed intervals; consistent; normal; frequent
Example
She goes for regular exercise every morning at 6 AM.
Ella hace ejercicio regularmente todas las mañanas a las 6.
C1 noun /ˈræftər/

rafter

viga
Meaning
One of the sloping beams that supports a roof.
Example
The old barn’s rafters were exposed.
Las vigas del viejo granero estaban expuestas.
C1 adjective /rɪˈtɔːrɪkəl/

rhetorical

retórico
Meaning
relating to the art of effective or persuasive speaking or writing; often a question asked to make a point rather than get an answer
Example
He asked a rhetorical question during the debate.
Hizo una pregunta retórica durante el debate.
C2 adjective /ˈrɛstɪv/

restive

inquieto
Meaning
unable to stay still or silent; restless and impatient
Example
The crowd grew restive as they waited for the concert to begin.
La multitud se volvió inquieta mientras esperaban a que comenzara el concierto.
C2 noun /ˈreɪdɪks/

radix

base
Meaning
the base or root of something; the number on which a system of numeration is built
Example
In mathematics, the decimal system has a radix of ten.
En matemáticas, el sistema decimal tiene una base de diez.