upcast
All a b c d e f g h i j k l m n o p q r s t u v w x y z
All CEFR A1 A2 B1 B2 C1 C2
Content locale
EN English BN Bengali HI Hindi ES Español FR Francés DE Alemán RU Ruso ZH Chino JA Japonés
All Vocabulary Cards All Vocabularies
C2 noun/verb /ˈʌpˌkæst/

upcast

lanzar hacia arriba
Meaning
Verb: To cast or throw upward. Noun: Something thrown or directed upward.
Example
The fisherman upcast his net into the air.
El pescador lanzó su red al aire.
B2 adjective /ˈʌt.ɚ/

Utter

completo; absoluto; total
Meaning
complete; absolute; total
Example
The movie was an utter disaster at the box office.
La película fue un desastre total en la taquilla.
C2 adjective /ʌnˈmɪtɪɡeɪtɪd/

unmitigated

completo
Meaning
absolute; not lessened or moderated
Example
The meeting was an unmitigated disaster.
La reunión fue un desastre completo.
C1 adjective /ˌʌnˈɪntɪmeɪtɪŋ/

unintimating

sin indicios
Meaning
Not giving a hint or suggestion; not indicating.
Example
His unintimating tone gave no clue of his true feelings.
Su tono sin indicios no dio ninguna pista sobre sus verdaderos sentimientos.
A1 noun /ˈʌŋkəl/

uncle

tío
Meaning
the brother of one's father or mother
Example
My uncle is visiting us next week.
Mi tío nos visitará la próxima semana.
B2 adjective /ˌʌnprɪˈdɪktəbəl/

unpredictable

impredecible
Meaning
not able to be predicted; changing suddenly and unexpectedly
Example
The weather in this region is highly unpredictable.
El clima en esta región es muy impredecible.
C2 verb /ˌʌndərˈɡɜːrd/

undergird

sustentar, reforzar
Meaning
to provide support or foundation for; to strengthen
Example
Strong values undergird a healthy society.
Los valores fuertes sustentan una sociedad saludable.
B2 adjective /ʌnˈriːzənəbəl/

unreasonable

irrazonable
Meaning
not guided by reason or fairness; excessive or extreme beyond what is acceptable
Example
The manager made an unreasonable demand that no one could realistically meet.
El gerente hizo una exigencia irrazonable.
C2 adjective /ˈʌndjʊləs/

undulous

ondulado
Meaning
Having a wavy surface or form.
Example
The artist painted the undulous sea at sunset.
El artista pintó el mar ondulado al atardecer.
B2 adjective /ˌʌn.kəʊˈɒp.ər.ə.tɪv/

uncooperative

poco cooperativo
Meaning
not willing to help or work with others; unhelpful
Example
The witness was uncooperative and refused to answer questions.
El testigo fue poco cooperativo y se negó a responder preguntas.
C2 verb /ˌʌn.dɪˈsiːv/

undeceive

desengañar
Meaning
To free someone from a misconception or false belief.
Example
She tried to undeceive him about the false rumors.
Ella trató de desengañarlo sobre los rumores falsos.
C1 adjective /ʌnˈsteɪtɪd/

unstated

no expresado
Meaning
not expressed directly in words; implied or left unsaid
Example
The contract included several unstated expectations.
El contrato incluía varias expectativas no expresadas.
B2 adjective /ʌnˈrɪəl/

unreal

irreal
Meaning
not real or not based on reality; exaggerated or imaginary
Example
The experience felt unreal after the sudden news.
La experiencia se sintió irreal después de la noticia repentina.
A1 adjective /ˈjuːs.fəl/

Useful

útil; práctico
Meaning
having a beneficial purpose; practical
Example
This tool is very useful for fixing problems.
Esta herramienta es muy útil para resolver problemas.
B2 adjective ʌnˈprɛsɪˌdɛntɪd

unprecedented

sin precedentes
Meaning
Never done or known before; without previous example.
Example
Unprecedented advancements in science changed human lives.
Los avances sin precedentes en la ciencia cambiaron la vida humana.
C1 adjective /ˌʌnəˈteɪnəbl/

unattainable

inalcanzable
Meaning
impossible to achieve, reach, or accomplish
Example
For many, becoming a professional athlete remains an unattainable dream.
Para muchos, convertirse en un atleta profesional sigue siendo un sueño inalcanzable.
C1 adjective /ʌnˈvɔɪst/

unvoiced

no expresado
Meaning
not expressed in speech; in phonetics, a sound produced without vocal cord vibration
Example
The student kept her opinion unvoiced during the meeting.
La estudiante mantuvo su opinión no expresada durante la reunión.
C1 adjective /ʌnˈkuːθ/

uncouth

grosero
Meaning
Lacking good manners, refinement, or grace; awkward or rough.
Example
His uncouth behavior shocked the guests at the party.
Su comportamiento grosero sorprendió a los invitados en la fiesta.
C2 adjective /ˈʌndjʊleɪtɪŋ/

undulating

ondulante
Meaning
Having a smoothly rising and falling form or motion like waves.
Example
We drove through undulating hills.
Condujimos por colinas onduladas.
C1 adjective /ˌʌn.əˈdʌl.tə.reɪ.tɪd/

Unadulterated

puro
Meaning
not mixed or diluted with any different or extra elements; pure
Example
She felt unadulterated joy when she heard the news.
Sintió una alegría pura cuando escuchó la noticia.
C1 noun /ˈjuːnɪsən/

unison

al unísono
Meaning
Simultaneous performance or utterance of action or speech.
Example
The choir sang in unison.
El coro cantó al unísono.
C1 noun /ˌjuːnɪˈfɔːrməti/

Uniformity

uniformidad; consistencia; igualdad
Meaning
the quality of being uniform; consistency or sameness
Example
The uniformity of the design created a pleasing visual effect.
La uniformidad del diseño creó un efecto visual atractivo.
C1 noun /ˈʌndərˌɡɑːrmənt/

undergarment

ropa interior
Meaning
a piece of clothing worn under outer clothes, usually next to the skin
Example
He bought new undergarments for the wedding.
Compró ropa interior nueva para la boda.
C1 verb /ˌʌndərˈlaɪ/

underlie

subyacer
Meaning
to be the hidden cause or basis of something
Example
Strong cultural traditions underlie the community's practices.
Las fuertes tradiciones culturales subyacen a las prácticas de la comunidad.
C2 adjective /ˌʌnəˈsweɪdʒd/

unassuaged

inquieto
Meaning
Not made less intense or relieved; unrelieved.
Example
His grief remained unassuaged despite the passage of time.
Su dolor permaneció inquieto a pesar del paso del tiempo.
C2 adjective /ʌnˈkɒnʃənəbl/

unconscionable

injustificable
Meaning
shockingly unfair or unreasonable
Example
The company made unconscionable profits from the crisis.
La empresa hizo ganancias injustificables durante la crisis.
C2 noun /ˈʌp.wel.ɪŋ/

upwelling

Fenómeno oceanográfico que implica el movimiento de agua densa, fría y rica en nutrientes hacia la superficie del océano.
Meaning
An oceanographic phenomenon that involves wind-driven motion of dense, cooler, and nutrient-rich water towards the ocean surface.
Example
Upwelling brings nutrients to the ocean surface.
El upwelling lleva nutrientes a la superficie del océano.
B2 adjective /ʌnprɪˈpɛrd/

Unprepared

despreparado
Meaning
not ready or able to deal with something
Example
He was unprepared for the difficult exam.
Él estaba desprevenido para el examen difícil.
A1 pronoun /ʌs/

us

nosotros
Meaning
used to refer to the speaker and one or more other people as the object of a verb or preposition
Example
She gave us a gift.
Ella nos dio un regalo.
B2 adjective /ʌnˈendɪŋ/

Unending

interminable
Meaning
continuing forever; without end
Example
The unending rain made the day feel gloomy.
La lluvia interminable hizo que el día se sintiera triste.
C2 adjective /ʌnˈælɔɪd/

unalloyed

puro
Meaning
Pure, complete, and not mixed with anything else.
Example
She felt unalloyed joy at the news of her success.
Ella sintió una alegría pura al recibir la noticia de su éxito.
C2 adverb /ʌnˈɜːrɪŋli/

unerringly

sin cometer errores
Meaning
Without making any mistakes; always accurate
Example
The archer aimed unerringly at the target.
El arquero apuntó sin cometer errores al objetivo.
C1 adjective /ʌnˈfɔːltərɪŋ/

unfaltering

inquebrantable
Meaning
Steady and resolute; not weakening or hesitating
Example
She continued with unfaltering determination.
Ella continuó con una determinación inquebrantable.
B1 adjective /ʌnˈklɪər/

unclear

poco claro
Meaning
not easy to understand; vague or ambiguous
Example
The instructions were unclear, so I asked for clarification.
Las instrucciones eran poco claras, así que pedí aclaraciones.
C1 adjective /ʌnˈsiːmli/

unseemly

indecoroso
Meaning
Not proper or appropriate in behavior or appearance; unbecoming.
Example
His unseemly remarks embarrassed everyone at the dinner table.
Sus comentarios indecorosos avergonzaron a todos en la mesa de la cena.
A2 noun /ˈjuːnɪt/

unit

unidad
Meaning
an individual thing or person regarded as a single and complete entity
Example
Each unit in the production line is carefully tested.
Cada unidad en la línea de producción se prueba cuidadosamente.
C2 verb /ˈʌndjʊleɪt/

undulate

ondular
Meaning
To move with a smooth, wave-like motion.
Example
The snake undulated across the sand.
La serpiente onduló a través de la arena.
A2 noun /ʌmˈbrɛlə/

umbrella

paraguas
Meaning
A device used for protection against rain or sun, typically consisting of a collapsible canopy mounted on a central rod.
Example
She opened her umbrella as it started to rain.
Ella abrió su paraguas cuando empezó a llover.
C2 adjective /ʌnˈlɛtəd/

unlettered

analfabeto
Meaning
lacking education or the ability to read and write; illiterate
Example
The unlettered villagers relied on oral traditions to preserve their history.
Los aldeanos analfabetos dependían de las tradiciones orales para preservar su historia.
B2 adjective /ʌnˈɪndʒərd/

uninjured

ileso
Meaning
Without injury; not physically harmed.
Example
All the passengers were rescued uninjured.
Todos los pasajeros fueron rescatados ilesos.
B2 adjective /ʌnˈprɒf.ɪ.tə.bl̩/

Unprofitable

no rentable
Meaning
not yielding profit or gain; not producing financial benefit
Example
The unprofitable business was forced to close down after three years.
El negocio no rentable se vio obligado a cerrar después de tres años.
B1 adjective /ʌnˈpɒpjʊlə/

unpopular

impopular
Meaning
not liked or supported by many people
Example
The decision was unpopular with the public.
La decisión fue impopular entre el público.
B2 adverb /ˈʌt.ə.li/

Utterly

totalmente; absolutamente; completamente
Meaning
completely; absolutely; totally
Example
The movie was utterly boring and I fell asleep.
La película era completamente aburrida y me quedé dormido.
B2 adjective /ˌʌnɪnˈtenʃənəl/

Unintentional

no intencionado; accidental
Meaning
not done on purpose; accidental
Example
The damage to the car was unintentional.
El daño al coche fue no intencionado.
C2 adjective /ʌnˈflæpəbəl/

unflappable

imperturbable
Meaning
calm and composed, especially in difficult situations
Example
Despite the crisis, he remained unflappable and confident.
A pesar de la crisis, se mantuvo imperturbable y confiado.
C1 adjective /ʌnˈhoʊli/

Unholy

impío; perverso; profano
Meaning
wicked; sinful; profane
Example
The unholy alliance between the two companies caused public outrage.
La alianza impía entre las dos compañías causó indignación pública.
B1 adjective /ʌnˈsɜːrtən/

Uncertain

incierto
Meaning
not able to be relied on; not known or definite; not having reliable knowledge
Example
I am uncertain about my future career plans.
Estoy incierto sobre mis planes futuros de carrera.
B2 adjective /ʌnˌkənˈfɜːmd/

Unconfirmed

no confirmado; no verificado;
Meaning
not confirmed as true or definite; not verified or substantiated
Example
The report remains unconfirmed until we receive official verification.
El informe sigue sin confirmar hasta que recibamos la verificación oficial.
C2 noun /ˈjuːʒəri/

usury

usura
Meaning
The practice of lending money at unreasonably high interest rates.
Example
The law strictly prohibits usury.
La ley prohíbe estrictamente la usura.
C1 adjective /ʌnˈkʌltʃəd/

Uncultured

incivilizado; sin educación
Meaning
lacking good manners, refinement, or education; uncivilized
Example
His uncultured behavior embarrassed everyone at the dinner party.
Su comportamiento incivilizado avergonzó a todos en la fiesta de la cena.
C1 noun /ˈʌp.ʃɒt/

Upshot

resultado; conclusión
Meaning
the final result or outcome of a series of events; conclusion
Example
The upshot of the meeting was a decision to postpone the project.
El resultado de la reunión fue una decisión de posponer el proyecto.
B2 adjective /ʌnˈlɔːfl/

Unlawful

ilegal; ilícito
Meaning
not authorized by law; illegal
Example
The court declared the search unlawful.
El tribunal declaró que la búsqueda era ilegal.
B2 adjective /ʌnˈsteɪbəl/

Unstable

inestable
Meaning
likely to change; not steady or secure; unsteady
Example
The unstable economy made people worried about their jobs.
La economía inestable hizo que las personas se preocuparan por sus trabajos.
C1 adjective /ˌʌnəˈfɛktɪd/

unaffected

inafectado, genuino
Meaning
Not influenced or touched by something; genuine and natural.
Example
He remained unaffected by the criticism and kept working hard.
Él permaneció sin verse afectado por la crítica y siguió trabajando duro.
A1 noun /ˌjuːnɪˈvɜːrsɪti/

university

universidad
Meaning
an institution of higher education and research, which grants academic degrees
Example
She is studying law at the university.
Ella está estudiando derecho en la universidad.
C1 adjective /ʌnˈduː/

Undue

excesivo; inapropiado; más de lo necesario o adecuado
Meaning
excessive; inappropriate; more than is necessary or proper
Example
The teacher complained about undue pressure from parents.
El maestro se quejó de la presión excesiva de los padres.
C1 adjective /ˌʌndərˈsaɪzd/

undersized

de tamaño pequeño
Meaning
Smaller than the usual or expected size.
Example
The undersized puppy struggled to keep up with its siblings.
El perrito de tamaño pequeño luchaba por mantenerse al día con sus hermanos.
C1 verb /ʌnˈmɑːsk/

unmask

desenmascarar
Meaning
to remove a mask or covering; to reveal the true identity, nature, or intentions of someone or something
Example
The investigation helped unmask the real culprit behind the crime.
La investigación ayudó a desenmascarar al verdadero culpable del crimen.
C2 noun /ˈʌndərlɪŋ/

underling

subordinado
Meaning
a person of low rank or importance; a subordinate
Example
The manager ordered his underlings to finish the task quickly.
El gerente ordenó a sus subordinados terminar la tarea rápidamente.
B2 noun ˌjuːtɪlaɪˈzeɪʃən

utilization

utilización
Meaning
The action of making practical and effective use of something.
Example
Increased plastic utilization calls for better waste management.
El aumento de la utilización del plástico requiere una mejor gestión de los residuos.
C1 noun /ˈʌndərˌstʌdi/

understudy

doble de reparto
Meaning
An actor who learns another's role to act as a replacement if needed.
Example
The understudy performed when the lead actor fell ill.
El doble de reparto actuó cuando el actor principal se enfermó.
C1 verb /ˌʌndəˈreɪt/

underrate

subestimar
Meaning
to fail to recognize the full value or importance of something or someone
Example
Many people underrate the benefits of regular exercise.
Muchas personas subestiman los beneficios del ejercicio regular.
B1 adjective /juːˈniːk/

Unique

único; singular; raro
Meaning
being the only one of its kind; unlike anything else
Example
Every snowflake is unique in its pattern.
Cada copo de nieve es único en su patrón.
C1 adjective /ʌnˈtʃælɪndʒd/

Unchallenged

incontestable; aceptado sin oposición; sin rival
Meaning
not disputed or questioned; accepted without opposition; having no rival
Example
He remained the unchallenged champion for five years.
Él permaneció como el campeón indiscutido durante cinco años.
B2 adjective /ʌnˈlɪmɪtɪd/

unlimited

ilimitado
Meaning
without any limits or restrictions
Example
The internet plan offers unlimited data for the whole month.
El plan de internet ofrece datos ilimitados durante todo el mes.
C1 adjective /ʌnˈsɜːrvɪsəbəl/

Unserviceable

inservible; defectuoso
Meaning
not in working order; unable to be used; defective
Example
The old computer became unserviceable after the system crash.
La computadora vieja se volvió inservible después del fallo del sistema.
B2 adverb /ˈɜːrdʒəntli/

urgently

urgentemente
Meaning
in a way that requires immediate attention or action
Example
The patient urgently needs medical attention.
El paciente necesita atención médica urgentemente.
B1 adjective /ˌʌndərˈstændəbl/

understandable

comprensible
Meaning
Able to be understood; reasonable or justifiable.
Example
Her reaction was understandable given the situation.
Su reacción fue comprensible dada la situación.
C2 adjective /ʌnˈʌtərəbl/

unutterable

inefable
Meaning
Too great, intense, or awful to be expressed or described in words.
Example
She was filled with unutterable joy at the news of her success.
Ella estaba llena de una alegría inefable al escuchar las noticias de su éxito.
B1 adjective /ˈʌpˌkʌmɪŋ/

upcoming

próximo
Meaning
about to happen or appear
Example
The upcoming event will be held next week.
El próximo evento se llevará a cabo la próxima semana.
B2 adjective /ˌʌnɪˈmædʒənəbəl/

Unimaginable

inimaginable
Meaning
impossible to conceive; beyond imagination
Example
The scale of destruction was unimaginable until we saw it firsthand.
La escala de la destrucción era inimaginable hasta que lo vimos de primera mano.
C2 verb /ʌpˈhiːv/

upheave

levantar
Meaning
to lift or raise something forcefully; to cause to rise suddenly
Example
The workers had to upheave the heavy stone to clear the path.
Los trabajadores tuvieron que levantar la piedra pesada para despejar el camino.
B2 adjective /ˈʌt.moʊst/

Utmost

máximo; extremo
Meaning
greatest; most extreme; maximum possible
Example
She showed utmost care while handling the fragile items.
Ella mostró el máximo cuidado al manejar los artículos frágiles.
B1 adverb /ʌnˈjuːʒuəli/

unusually

de manera inusual
Meaning
in a way that is not typical or expected; to an uncommon degree
Example
It was unusually cold for this time of year.
Hacía un frío inusual para esta época del año.
B2 adjective /ʌnˈriːdəbl/

unreadable

ilegible
Meaning
not able to be read or understood clearly; illegible
Example
The doctor’s handwriting was completely unreadable.
La letra del médico era completamente ilegible.
B2 adjective /ˌʌnəˈweər/

Unaware

inconsciente; ajeno; sin saber
Meaning
not knowing or realizing; having no knowledge of something
Example
She was completely unaware of the danger.
Ella estaba completamente inconsciente del peligro.
C1 noun /ˌʌl.tɪˈmeɪ.təm/

Ultimatum

ultimátum
Meaning
a final demand or statement of terms, the rejection of which will result in retaliation
Example
The boss gave him an ultimatum: improve or be fired.
El jefe le dio un ultimátum: mejora o serás despedido.
A1 interjection /ʌ/

uh

eh
Meaning
a sound people make when they hesitate or are unsure what to say next.
Example
Uh, I’m not sure if that’s the right answer.
Eh, no estoy seguro de si esa es la respuesta correcta.
B2 verb ˈjuːnɪfaɪ

unify

unificar
Meaning
To make or become united, uniform, or whole; to bring together into a single unit.
Example
Adolescents unify with peers for social acceptance.
Los adolescentes se unifican con sus compañeros para la aceptación social.
C2 adjective /ˌʌnɪkˈsɛpʃənəbl/

unexceptionable

irreprochable
Meaning
Not open to objection; acceptable and unobjectionable
Example
His behavior was unexceptionable throughout the event.
Su comportamiento fue irreprochable durante el evento.
B1 verb /juˈnaɪt/

unite

unir
Meaning
to join together or combine; to bring people or things together
Example
The crisis helped unite the community.
La crisis ayudó a unir a la comunidad.
C2 adjective /ˌʌn.rɪˈdʒɛn.ər.ət/

unregenerate

intransigente
Meaning
Not reformed or showing no signs of change; stubbornly refusing to reform or repent.
Example
He remained an unregenerate opponent of progress.
Siguió siendo un oponente intransigente del progreso.
C1 adjective /ʌnˈtaɪərɪŋ/

Untiring

incansable; persistente; infatigable
Meaning
continuing without stopping; persistent; tireless
Example
Her untiring efforts finally led to success.
Sus esfuerzos incansables finalmente llevaron al éxito.
B2 adjective /ˌʌndɪˈveləpt/

Undeveloped

no desarrollado; inmaduro; primitivo
Meaning
not yet developed; immature or primitive
Example
The undeveloped land was later turned into a park.
La tierra no desarrollada fue luego convertida en un parque.
C1 verb /ˌʌndərˈvæljuː/

undervalue

devaluar
Meaning
To assign too low a value or importance to something or someone.
Example
She felt that her boss consistently undervalued her contributions.
Ella sintió que su jefe constantemente no valoraba sus contribuciones.
B2 adjective /ˌʌnˈnoʊ.tɪst/

Unnoticed

desapercibido; ignorado
Meaning
not seen or observed; ignored
Example
His hard work went unnoticed by his manager.
Su arduo trabajo pasó desapercibido por su gerente.
C1 adjective ʌnˈwɔːr.rən.tɪd

unwarranted

innecesario
Meaning
Not justified or necessary; without good reason.
Example
His anger toward the staff was completely unwarranted.
Su enojo hacia el personal fue completamente innecesario.
B2 adjective /ʌnˈberəbəl/

Unbearable

insostenible
Meaning
too painful, annoying, or unpleasant to tolerate; impossible to endure
Example
The heat in the desert was unbearable.
El calor en el desierto era insoportable.
C1 adjective ʌnˈpær.ə.leld

Unparalleled

incomparable
Meaning
Having no equal; unmatched, peerless, and supreme in quality or achievement.
Example
The unparalleled beauty of the Taj Mahal amazes visitors.
La belleza incomparable del Taj Mahal asombra a los visitantes.
B2 verb /ʌpˈhoʊld/

uphold

mantener
Meaning
to maintain or support a principle, law, or decision
Example
The judge promised to uphold justice at all costs.
El juez prometió mantener la justicia a toda costa.
C1 adjective /ʌnˈtʌtʃəbəl/

Untouchable

intocable; más allá de la crítica o el ataque
Meaning
not able to be touched or affected; beyond criticism or attack
Example
The CEO seemed untouchable despite the scandal.
El CEO parecía intocable a pesar del escándalo.
C1 adjective /ˈʌpərˌmoʊst/

uppermost

más alto
Meaning
situated at the highest place or most important
Example
Her family's safety was uppermost in her mind during the crisis.
La seguridad de su familia era lo más importante en su mente durante la crisis.
B2 adjective /ʌn.rɪˈleɪ.tɪd/

Unrelated

irrelevante; no relacionado
Meaning
having no connection or relationship; not connected by family ties
Example
The two incidents were completely unrelated to each other.
Los dos incidentes estaban completamente no relacionados entre sí.
C1 adjective /ʌnˈsoʊld/

unsold

no vendido
Meaning
not sold; remaining without a buyer
Example
The unsold goods were returned to the warehouse.
Los productos no vendidos fueron devueltos al almacén.
B2 adjective /ʌnˈhɛlpfəl/

unhelpful

poco útil
Meaning
not providing help or support; making a situation harder rather than easier
Example
His unhelpful attitude slowed down the entire project.
Su actitud poco útil retrasó todo el proyecto.
C2 verb /ˈʌndərˌmæn/

underman

quedarse sin personal
Meaning
to supply with fewer workers or personnel than needed
Example
The hospital was undermanned during the flu outbreak.
El hospital estuvo con poco personal durante el brote de gripe.
B2 adjective /ʌnˈbaɪəst/

unbiased

imparcial
Meaning
Not showing prejudice; impartial and fair.
Example
The report gave an unbiased view of the situation.
El informe dio una vista imparcial de la situación.
C1 adjective /ʌnˈkɒm.prə.maɪ.zɪŋ/

Uncompromising

intransigente, inflexible
Meaning
unwilling to change one's views or to agree about something; showing an unwillingness to make concessions to others
Example
He was uncompromising in his demand for a full apology.
Él era intransigente en su demanda de una disculpa completa.
C1 adjective /ʌnˈweɪ.vər.ɪŋ/

unwavering

inquebrantable
Meaning
Steady or resolute; not wavering.
Example
He showed unwavering dedication to his goal.
Él mostró una dedicación inquebrantable hacia su meta.
A2 noun /ˌʌpˈsteəz/

Upstairs

piso superior
Meaning
on or to an upper floor of a building; the upper floor or floors
Example
She went upstairs to her bedroom to rest.
Ella subió al piso de arriba a su dormitorio para descansar.
B1 noun /ˈjuːnjən/

Union

unión
Meaning
the action of joining or combining; a political unit formed from separate states
Example
The union of the two companies created a powerful corporation.
La unión de las dos empresas creó una poderosa corporación.
B2 adjective /ˌʌnəˈveɪləbəl/

unavailable

no disponible
Meaning
Not able to be obtained, reached, or used; not present or accessible.
Example
The manager was unavailable to take calls during the meeting.
El gerente no estaba disponible para atender llamadas durante la reunión.
C1 adjective /ˌjuːtɪlɪˈtɛəriən/

utilitarian

utilitario
Meaning
Designed to be useful or practical rather than attractive; relating to the doctrine that actions are right if they are useful or for the benefit of a majority.
Example
The building had a simple utilitarian design.
El edificio tenia un diseno utilitario simple.
C1 noun /ˈʌp.raɪt.nəs/

Uprightness

rectitud; integridad
Meaning
the quality of being honest and morally correct; integrity
Example
His uprightness in business dealings earned him great respect.
Su rectitud en los negocios le ganó gran respeto.
B2 adjective /ʌnˈfeɪθ.fəl/

Unfaithful

infiel
Meaning
not loyal or true to a spouse, partner, or commitment
Example
He was unfaithful to his wife for many years.
Él fue infiel a su esposa durante muchos años.
C1 adjective /ˌʌnrɪˈfaɪnd/

unrefined

sin refinar
Meaning
not processed or purified; lacking polish or sophistication
Example
The unrefined oil must be processed before it can be used as fuel.
El aceite sin refinar debe procesarse antes de usarse como combustible.
B1 adjective /ʌnˈfrɛndli/

unfriendly

antipático
Meaning
not kind or welcoming; hostile or cold in behavior or attitude
Example
The shop owner seemed unfriendly to new customers.
El dueño de la tienda parecía antipático con los nuevos clientes.
C2 adjective /ˈʌŋk.tʃu.əs/

unctuous

lisonjero
Meaning
Excessively flattering or ingratiating; oily in texture.
Example
His unctuous tone made everyone uncomfortable.
Su tono lisonjero hizo que todos se sintieran incómodos.
C1 adjective /ʌnˈkwes.tʃən.ə.bl̩/

Unquestionable

indiscutible; seguro
Meaning
not able to be disputed or doubted; certain and beyond doubt
Example
Her honesty and integrity are unquestionable qualities.
Su honestidad e integridad son cualidades indiscutibles.
A1 adverb /ʌp/

up

arriba
Meaning
towards a higher position or level
Example
He climbed up the ladder quickly.
Él subió rápidamente la escalera.
B2 adjective /ˌʌndɪˈstɜːrbd/

Undisturbed

ininterrumpido
Meaning
not interrupted or interfered with; calm and peaceful
Example
She slept undisturbed for eight hours.
Ella durmió ininterrumpidamente durante ocho horas.
C2 adjective /ʌnˈblʌʃɪŋ/

Unblushing

descarado; sinvergüenza
Meaning
showing no shame or embarrassment; boldly shameless
Example
He told the unblushing lie without any hesitation.
Él dijo la mentira descarada sin dudar.
B1 adjective /ʌnˈwɒn.tɪd/

Unwanted

no deseado
Meaning
not desired or welcome; not wanted
Example
He felt like an unwanted guest at the meeting.
Él se sintió como un invitado no deseado en la reunión.
A2 noun /ˌʌndərˈstændɪŋ/

understanding

comprensión
Meaning
the ability to grasp the meaning, significance, or nature of something
Example
Her understanding of the issue was impressive.
Su comprensión del tema fue impresionante.
C1 adjective /ʌnˈʃeɪkən/

Unshaken

inquebrantable; firme
Meaning
not disturbed or affected; firm and steady; unwavering
Example
Her faith remained unshaken despite all the challenges.
Su fe permaneció inquebrantable a pesar de todos los desafíos.
B2 noun /ʌnˈsɜːrtənti/

Uncertainty

incertidumbre; duda o falta de certeza
Meaning
the state of being uncertain; doubt or lack of sureness
Example
The uncertainty about the weather delayed our trip.
La incertidumbre sobre el clima retrasó nuestro viaje.
B1 adjective /ˌʌnˈɪntrəstɪŋ/

uninteresting

aburrido
Meaning
not holding attention or curiosity; boring
Example
The lecture was uninteresting and difficult to stay focused on.
La conferencia fue aburrida y difícil de seguir.
B1 adjective ʌnˈplænd

unplanned

no planificado
Meaning
Not planned or arranged in advance; happening spontaneously without preparation.
Example
Unplanned urbanization contributes to environmental issues.
La urbanización no planificada contribuye a problemas ambientales.
B2 adjective /juːˈnæn.ɪ.məs/

Unanimous

unánime
Meaning
fully in agreement; shared by all
Example
The committee reached a unanimous decision.
El comité tomó una decisión unánime.
B2 adjective /ˈjuː.nɪ.faɪd/

unified

unificado
Meaning
Made into a whole or joined together.
Example
A unified approach fosters better outcomes.
Un enfoque unificado fomenta mejores resultados.
C1 adjective /ʌnˈskeɪðd/

unscathed

ileso
Meaning
Without suffering any injury, damage, or harm.
Example
She escaped from the accident unscathed.
Ella escapó del accidente ilesa.