Unpleasant
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B1 adjective /ʌnˈplɛz.ənt/

Unpleasant

desagradable
Meaning
not giving or causing pleasure; disagreeable
Example
The medicine had an unpleasant taste.
El medicamento tenía un sabor desagradable.
B1 adjective /ʌnˈkaɪnd/

Unkind

cruel; no amable
Meaning
cruel; not nice or caring toward others
Example
It was unkind of him to make fun of her appearance.
Fue cruel de su parte hacer burla de su apariencia.
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.
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.
B1 adjective /ʌnˈwel/

Unwell

enfermo; indispuesto
Meaning
not in good health; feeling sick or ill
Example
She has been feeling unwell since yesterday.
Ella ha estado sintiéndose mal desde ayer.
B2 adjective /ˌjuːnɪˈvɜːrsəl/

Universal

universal
Meaning
applicable to all cases; existing everywhere
Example
Music is a universal language that everyone understands.
La música es un lenguaje universal que todos entienden.
C1 noun /ʌnɪmˈpɔːrtəns/

unimportance

insignificancia
Meaning
the state or quality of being insignificant or not important
Example
He dismissed the issue with a sense of unimportance.
Él desestimó el asunto con un sentido de falta de importancia.
C1 adjective /ˌʌnɪmˈplɔɪəbəl/

unemployable

desempleable
Meaning
Not able to be employed; lacking the skills or qualities necessary for employment
Example
Due to his criminal record, he was considered unemployable in most companies.
Debido a su historial criminal, fue considerado desempleable en la mayoría de las empresas.
B2 noun /ˈʌpˌkiːp/

up-keep

mantenimiento
Meaning
The process or cost of maintaining something in good condition.
Example
The upkeep of the old house is very expensive.
El mantenimiento de la casa antigua es muy caro.
B2 adjective /ʌnˈhɜːrt/

unhurt

ileso
Meaning
Not injured or harmed.
Example
She walked away from the accident unhurt.
Ella caminó lejos del accidente sin sufrir daño.
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.
B2 adjective /ˌʌndɪˈzaɪərəbl/

Undesirable

indeseable; perjudicial; desagradable
Meaning
not wanted or wished for; harmful or unpleasant
Example
The new policy had several undesirable consequences.
La nueva política tuvo varias consecuencias indeseables.
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 /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.
B2 adjective /ʌnˈɡreɪt.fəl/

Ungrateful

ingrato
Meaning
not feeling or showing thanks for something done or given; not appreciating kindness
Example
She felt he was ungrateful for all the help she had given him.
Ella sintió que él era ingrato por toda la ayuda que le había dado.
C2 noun juːˈbɪkwɪti

ubiquity

ubicuidad
Meaning
The fact of appearing everywhere or of being very common.
Example
The ubiquity of smartphones has transformed communication.
La ubicuidad de los teléfonos inteligentes ha transformado la comunicación.
A2 adjective /ʌnˈkʌmf.tə.bəl/

Uncomfortable

incómodo; incómoda
Meaning
causing or feeling slight pain or physical discomfort; making someone feel embarrassed, awkward, or anxious
Example
The chair was so uncomfortable that I couldn't sit in it for more than ten minutes.
La silla era tan incómoda que no pude sentarme en ella por más de diez minutos.
B1 adjective /ʌnˈseɪf/

Unsafe

inseguro; peligroso;
Meaning
involving or causing danger or risk; not protected from harm
Example
It is unsafe to walk alone in this neighborhood at night.
Es inseguro caminar solo en este vecindario por la noche.
B2 adverb /ʌnˈfɛərli/

unfairly

injustamente
Meaning
In a manner that is not just, reasonable, or impartial
Example
He was treated unfairly by the committee.
Él fue tratado injustamente por el comité.
C1 adjective /ʌnˈmænɪdʒəbəl/

Unmanageable

incontrolable; fuera de control
Meaning
difficult or impossible to control or handle
Example
The large class became unmanageable without proper supervision.
La gran clase se volvió incontrolable sin una supervisión adecuada.
C1 adjective /ʌnˈkæni/

uncanny

extraño
Meaning
Strange or mysterious, especially in an unsettling way.
Example
She has an uncanny ability to predict the future.
Ella tiene una extraña habilidad para predecir el futuro.
C1 adjective /ʌnˈɒnəd/

unhonoured

deshonrado
Meaning
not respected or given the recognition that is deserved; treated without honor
Example
He felt unhonoured after his years of service were ignored.
Se sintió deshonrado después de que ignoraran sus años de servicio.
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.
C2 noun /ˈjuːzjuːfrʌkt/

usufruct

usufructo
Meaning
The legal right to use and enjoy the benefits of someone else’s property without owning it.
Example
The tenant had the usufruct of the land but not its ownership.
El inquilino tenía el usufructo de la tierra pero no su propiedad.
C2 verb /juˈzɜrp/

usurp

usurpar
Meaning
to take someone's position of power illegally or by force
Example
The general tried to usurp the king's throne.
El general intentó usurpar el trono del rey.
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.
C1 adjective /ʌnˈsəʊʃəbl/

unsociable

poco sociable
Meaning
not enjoying the company of others; avoiding social interaction
Example
He became unsociable after moving to a new city.
Se volvió poco sociable después de mudarse a una nueva ciudad.
C2 adjective /juːˈbɪkwɪtəs/

ubiquitious

ubicuo
Meaning
Present, appearing, or found everywhere.
Example
Smartphones have become ubiquitous in modern society.
Los teléfonos inteligentes se han vuelto ubicuos en la sociedad moderna.
C1 verb /ʌnˈrævəl/

unravel

desentrañar
Meaning
To undo twisted or knitted threads; to solve or explain something complicated.
Example
The detective worked hard to unravel the mystery.
El detective trabajó arduamente para desentrañar el misterio.
C2 noun /ˌjuːnɪˈtɛəriən/

unitarian

unitario
Meaning
A person who believes that God exists as one entity rather than as a Trinity; a member of a religious denomination that emphasizes individual freedom of belief.
Example
The Unitarian church is known for its inclusive and open-minded approach.
La iglesia unitaria es conocida por su enfoque inclusivo y de mente abierta.
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 /ʌnˈfɔːr.tʃən.ət/

Unfortunate

desafortunado; lamentable
Meaning
having bad luck; regrettable or unlucky
Example
It was unfortunate that the meeting was cancelled at the last minute.
Fue desafortunado que la reunión se cancelara en el último minuto.
C1 adverb /ʌnˈnætʃrəli/

unnaturally

de manera antinatural
Meaning
in a way that is not natural or normal; excessively or strangely
Example
He smiled unnaturally, making everyone feel uncomfortable.
Sonrió de manera antinatural, haciendo que todos se sintieran incómodos.
B1 adjective /ˈɜːrbən/

urban

urbano
Meaning
related to, characteristic of, or situated in a city or town
Example
Urban areas often have higher population density than rural areas.
Las áreas urbanas suelen tener una mayor densidad de población que las áreas rurales.
B1 adjective /ʌnˈnesəseri/

Unnecessary

innecesario; innecesario
Meaning
not needed; not required; pointless
Example
The meeting was unnecessary since all decisions were already made.
La reunión fue innecesaria ya que todas las decisiones ya se habían tomado.
B2 adjective /ʌnˈiːzi/

Uneasy

inquieto; ansioso; incómodo
Meaning
worried; anxious; uncomfortable; restless
Example
She felt uneasy about walking alone at night.
Ella se sentía inquieta al caminar sola de noche.
B2 adjective /ˌʌnkənˈvɪnsɪŋ/

Unconvincing

increíble
Meaning
failing to persuade or impress; not believable or credible
Example
His excuse for being late was completely unconvincing.
Su excusa por llegar tarde era completamente increíble.
C1 adjective /ʌnˈθɪŋkɪŋ/

unthinking

irreflexivo
Meaning
done without careful thought; automatic or thoughtless
Example
His unthinking remark hurt her feelings.
Su comentario irreflexivo hirió sus sentimientos.
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 adjective /ˌʌnkənˈvɛnʃənl/

unconventional

no convencional
Meaning
not based on or conforming to what is generally done or believed
Example
Her unconventional approach to teaching inspired her students to think creatively.
Su enfoque de enseñanza no convencional inspiró a sus estudiantes a pensar creativamente.
B1 adjective /ʌnɪmˈplɔɪd/

Unemployed

desempleado
Meaning
without a job; not having paid work
Example
He has been unemployed for six months now.
Él ha estado desempleado durante seis meses.
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 /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.
C1 adjective /ʌnˈkwaɪ.ət/

Unquiet

inquieto; ansioso; perturbado
Meaning
restless; unable to remain still or quiet; anxious or troubled
Example
She spent an unquiet night worrying about the exam results.
Pasó una noche inquieta preocupada por los resultados del examen.
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 /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.
B2 verb /ˈjuːtɪlaɪz/

utilize

utilizar
Meaning
to make practical or effective use of something
Example
The company aims to utilize solar energy for production.
La compañía tiene como objetivo utilizar energía solar para la producción.
C2 adjective ˌʌn.əˈseɪ.lə.bəl

unassailable

inexpugnable
Meaning
Unable to be attacked, questioned, or defeated.
Example
An unassailable position ensures dominance.
Una posición inexpugnable asegura la dominancia.
B1 adjective /ˈʌpər/

upper

superior
Meaning
higher in position or rank
Example
The upper floor of the building is under renovation.
El piso superior del edificio está en renovación.
C1 adjective /ʌnˈtaɪmli/

Untimely

precipitado
Meaning
happening at an inappropriate or inconvenient time; premature
Example
His untimely death at the age of thirty shocked everyone.
Su muerte precipitada a la edad de treinta años sorprendió a todos.
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.
C1 verb /ʌnˈsɛtl/

unsettle

desconcertar
Meaning
To disturb or make someone feel anxious or uneasy.
Example
The sudden news unsettled the entire community.
La noticia repentina desconcertó a toda la comunidad.
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.
B2 adjective /ʌnprəˈdʌk.tɪv/

Unproductive

improductivo; ineficaz
Meaning
not achieving much; not producing good results
Example
The meeting was unproductive and wasted everyone's time.
La reunión fue improductiva y desperdició el tiempo de todos.
B2 adjective /ʌnˈbiːtən/

Unbeaten

invicto; no derrotado
Meaning
not defeated; having never lost; undefeated
Example
The team remains unbeaten this season.
El equipo sigue invicto esta temporada.
C2 adjective /ʌnˈtræməld/

untrammeled

libertad ilimitada
Meaning
Not restricted or hampered; free and unrestricted.
Example
She enjoyed untrammeled freedom in her new life abroad.
Disfrutó de libertad ilimitada en su nueva vida en el extranjero.
B2 verb /ˌʌndərˈteɪk/

undertake

emprender
Meaning
to commit to and begin a task or project; to take on responsibility
Example
She decided to undertake a challenging project.
Ella decidió emprender un proyecto desafiante.
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.
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.
B2 verb /ˌʌndərˈɡoʊ/

undergo

someterse
Meaning
to go through something, especially something unpleasant or difficult
Example
She had to undergo surgery to recover.
Tuvo que someterse a cirugía para recuperarse.
C1 adjective /ˌʌnbɪˈkʌmɪŋ/

unbecoming

inadecuado
Meaning
Not proper or appropriate for a person; unsuitable.
Example
His rude behavior was unbecoming of a leader.
Su comportamiento grosero era inadecuado para un líder.
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.
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 adjective /ˌʌnprəˈpɪʃəs/

unpropitious

desfavorable
Meaning
Not giving or indicating a good chance of success; unfavorable.
Example
The team began their journey under unpropitious weather conditions.
El equipo comenzó su viaje bajo condiciones meteorológicas desfavorables.
C1 adjective ˌʌn.pəˈtɜːbd

unperturbed

no preocupado o perturbado por algo; calmado y compuesto
Meaning
Not worried or disturbed by something; calm and composed.
Example
She remained unperturbed despite the challenges.
Ella permaneció tranquila a pesar de los desafíos.
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.
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.
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 noun ˈjuːnəti

unity

unidad
Meaning
The state of being united or joined as a whole.
Example
Unity among people led to victory.
La unidad entre las personas llevó a la victoria.
C1 noun /ˈʌndərˌwɜːrld/

underworld

submundo
Meaning
The criminal world of organized crime or the mythical world of the dead.
Example
The detective spent years studying the secrets of the underworld.
El detective pasó años estudiando los secretos del submundo.
C2 adjective /ʌnəˈpiːzd/

unappeased

insatisfecho
Meaning
Not satisfied or calmed; still feeling discontent or anger
Example
Despite the apology, she remained unappeased.
A pesar de la disculpa, ella permaneció insatisfecha.
C2 adjective /ɜːrˈbeɪn/

urbane

urbano
Meaning
showing polished manners, refinement, and sophistication
Example
He was an urbane gentleman who charmed everyone at the party.
Era un caballero urbano que encantó a todos en la fiesta.
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.
B2 adjective /ˌʌndərˈlaɪɪŋ/

underlying

subyacente
Meaning
basic or hidden but important; forming the foundation of something
Example
The underlying reason for the conflict was never addressed.
La razón subyacente para el conflicto nunca fue abordada.
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.
C2 adjective /ʌnˈɡeɪnli/

ungainly

torpe
Meaning
Awkward, clumsy, or lacking grace in movement or appearance.
Example
The tall boy moved in an ungainly manner.
El chico alto se movió de manera torpe.
C2 noun /juːˈkeɪs/

ukase

decreto
Meaning
An authoritative decree or order, especially one issued by a sovereign or government.
Example
The czar issued a ukase restricting the freedom of the press.
El zar emitió un decreto que restringía la libertad de prensa.
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.
A2 adjective /ʌnˈlʌki/

Unlucky

desafortunado; de mala suerte
Meaning
having bad luck; unfortunate
Example
He was unlucky to miss the winning shot.
Él tuvo mala suerte al perder el tiro ganador.
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 /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.
C1 adjective /ʌnˈtoʊld/

Untold

incontable; infinito
Meaning
very great in amount or degree; countless; immeasurable
Example
The earthquake caused untold damage to the city.
El terremoto causó daños incontables a la ciudad.
A1 verb /ˌʌndərˈstænd/

understand

entender
Meaning
to know the meaning of something; to comprehend
Example
Do you understand the instructions?
¿Entiendes las instrucciones?
C2 noun /ˈʌn.dɚˌstɔː.ri/

understory

vegetación inferior
Meaning
The layer of vegetation beneath the main canopy of a forest.
Example
The understory of a rainforest is home to small mammals and insects.
La vegetación inferior de un bosque tropical es hogar de pequeños mamíferos e insectos.
B2 noun /ʌnəˈbɪləti/

unability

incapacidad
Meaning
the state of being unable to do something; incapacity
Example
His unability to solve the problem caused delays in the project.
Su incapacidad para resolver el problema causó retrasos en el proyecto.
B2 adverb /ˈʌltəmətli/

ultimately

finalmente
Meaning
in the end, after everything else
Example
Ultimately, we decided to go ahead with the project.
Finalmente, decidimos continuar con el proyecto.
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 verb /ʌnˈkaʊtʃ/

uncouch

sacar del sofá (uso raro)
Meaning
to remove from a couch or to release from being laid down (rare/archaic usage)
Example
The surgeon attempted to uncouch the cataract.
El cirujano intentó sacar la catarata.
B1 adjective /ʌnˈeɪ.bəl/

Unable

incapaz
Meaning
lacking the power, skill, or means to do something
Example
He was unable to attend the meeting.
Él no pudo asistir a la reunión.
B1 adjective /ʌnˈjuː.ʒu.əl/

Unusual

inusual; extraño;
Meaning
not typical; strange; different from what is normal
Example
She wore an unusual dress to the party.
Ella llevaba un vestido inusual a la fiesta.
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.
A1 preposition /ˈʌndər/

under

debajo
Meaning
in or to a lower position than something
Example
The cat is under the table.
El gato está debajo de la mesa.
B1 adjective /ˌʌnsəkˈsesfl/

Unsuccessful

fallido; no logrado;
Meaning
not achieving desired aims or results; failing to accomplish a purpose
Example
His unsuccessful attempt to climb the mountain left him disappointed.
Su intento fallido de escalar la montaña lo dejó decepcionado.
A2 adjective /ˈjuːʒəl/

usual

habitual
Meaning
habitually or typically occurring or done
Example
It’s our usual meeting spot.
Es nuestro lugar habitual de reuniones.
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.
B2 adjective /ʌnˈraɪp/

Unripe

inmaduro
Meaning
not fully developed or matured; not ready to be eaten
Example
The unripe bananas will turn yellow in a few days.
Las bananas no maduras se pondrán amarillas en unos días.
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 /ˈʌpˌhɪl/

Uphill

difícil; que requiere gran esfuerzo; inclinado hacia arriba
Meaning
difficult; requiring great effort; sloping upward
Example
Learning a new language can be an uphill battle.
Aprender un nuevo idioma puede ser una batalla difícil.
A1 preposition/conjunction /ʌnˈtɪl/

until

hasta
Meaning
up to the time of
Example
I will wait until you come back.
Esperaré hasta que regreses.
C2 adjective /ˌʌltrəˈmɒnteɪn/

ultramontane

partidario del Papa
Meaning
beyond the mountains, especially referring to support for the Pope over local church authority
Example
The debate highlighted the ultramontane position in church politics.
El debate destacó la posición ultramontana en la política eclesiástica.
B1 adjective /ʌnˈjuzd/

Unused

sin usar; no utilizado
Meaning
not being used; not having been used before
Example
There are many unused rooms in this old mansion.
Hay muchas habitaciones sin usar en esta antigua mansión.
C2 adjective /ʌnˈsʌlid/

unsullied

inmaculado
Meaning
not spoiled or made impure; perfectly clean or pure
Example
His reputation remained unsullied despite the accusations.
Su reputación permaneció inmaculada a pesar de las acusaciones.
C2 adjective /juːˈʒʊəriəs/

usurious

usurero
Meaning
Charging excessively high interest rates on loans.
Example
The bank was accused of offering loans at usurious rates.
El banco fue acusado de ofrecer préstamos a tasas usureras.
C1 adjective /ʌnˈvaɪəbl/

unviable

inválido
Meaning
Not capable of working successfully; not feasible or practical.
Example
The project was deemed unviable due to high costs.
El proyecto fue considerado inviable debido a los altos costos.
C1 adjective /ˌʌnɪˈkwɪvəkəl/

unequivocal

inequívoco
Meaning
Leaving no doubt; clear and unambiguous
Example
She gave an unequivocal answer to the question.
Ella dio una respuesta inequívoca a la pregunta.
C2 adjective /ʌnˈmɪtɪɡeɪtɪd/

unmitigated

completo
Meaning
absolute; not lessened or moderated
Example
The meeting was an unmitigated disaster.
La reunión fue un desastre completo.
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.
B2 adjective /ʌnˈnætʃərəl/

Unnatural

antinatural
Meaning
not existing in nature; artificial; forced
Example
The actor's smile looked unnatural and forced.
La sonrisa del actor parecía antinatural y forzada.
A2 conjunction /ʌnˈlɛs/

unless

a menos que
Meaning
except if
Example
We won't go unless it stops raining.
No iremos a menos que deje de llover.
B2 noun /ˈjuː.sɪdʒ/

Usage

uso
Meaning
the action of using something; the way in which words are used in a language
Example
The dictionary explains the correct usage of difficult words.
El diccionario explica el uso correcto de palabras difíciles.
B2 adjective /ˌʌnəˈvɔɪdəbəl/

Unavoidable

Inevitable; que no se puede evitar; obligatorio
Meaning
cannot be avoided; certain to happen; inevitable
Example
The meeting is unavoidable, so we must attend.
La reunión es inevitable, así que debemos asistir.
B2 adjective /ʌnˈiːvən/

Uneven

irregular; áspero
Meaning
not level or smooth; not regular or consistent
Example
The road was uneven and full of potholes.
La carretera estaba irregular y llena de baches.
C1 noun ˌʌndərˈprɪvəlɪdʒd ɡruːps

underprivileged groups

grupos desfavorecidos
Meaning
Groups of people who lack basic necessities or advantages that are available to other members of society.
Example
Underprivileged groups benefit from social initiatives.
Los grupos desfavorecidos se benefician de las iniciativas sociales.
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.
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.
B2 adjective /ˌʌnˈkɔːrdɪneɪtɪd/

uncoordinated

descoordinado
Meaning
lacking coordination, not well-organized or clumsy in movement
Example
His movements were uncoordinated, making him prone to accidents.
Sus movimientos eran descoordinados, lo que lo hacía propenso a accidentes.
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.
C1 noun /ˈʌndərˌteɪkər/

undertaker

enterrador
Meaning
A person whose job is to prepare the dead for burial and arrange funerals.
Example
The undertaker prepared the body for the funeral service.
El enterrador preparó el cuerpo para el servicio funerario.
C1 adjective /ʌnˈɜːrθli/

unearthly

sobrenatural
Meaning
Strange or unnatural in a way that seems not of this world
Example
The forest was filled with an unearthly glow.
El bosque estaba lleno de un resplandor sobrenatural.
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.
C2 adjective /ʌnˈspɛərɪŋ/

unsparing

implacable
Meaning
Showing no mercy or generosity; harsh or severe.
Example
The critic was unsparing in his review of the play.
El crítico fue implacable en su reseña de la obra.