unsociable
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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.
B2 adjective /ʌnˈwɜːrði/

Unworthy

indigno; no merecedor
Meaning
not deserving respect or attention; lacking worth or merit
Example
He felt unworthy of such praise and recognition.
Él se sintió no digno de tal alabanza y reconocimiento.
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 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.
C1 adjective /ˌʌnˈpɑr.də.nə.bəl/

Unpardonable

imperdonable
Meaning
too bad to be forgiven; inexcusable
Example
His betrayal of trust was an unpardonable offense.
Su traición fue un delito imperdonable.
C1 verb /ˌʌndərˈsɛl/

undersell

vender a un precio más bajo
Meaning
to sell something at a lower price than competitors or to downplay the value of something
Example
The shop undersold its rivals by offering huge discounts.
La tienda vendió a sus rivales a un precio más bajo ofreciendo grandes descuentos.
C1 noun /juːˈtoʊpiə/

utopia

utopía
Meaning
An imagined perfect society or place where everything is ideal.
Example
Many philosophers dreamed of creating a utopia for humanity.
Muchos filósofos soñaron con crear una utopía para la humanidad.
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 /ˌʌnəbˈtruːsɪv/

unobtrusive

discreto
Meaning
not attracting attention; blending in without causing notice
Example
The security cameras are designed to be unobtrusive.
Las cámaras de seguridad están diseñadas para ser discretas.
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.
B2 adjective /ʌnˈɑːrmd/

unarmed

desarmado
Meaning
Not equipped with or carrying weapons
Example
The police found the suspect unarmed during the search.
La policía encontró al sospechoso desarmado durante la búsqueda.
A2 adjective /ˈʌɡ.li/

Ugly

feo; repulsivo; desagradable
Meaning
unpleasant or repulsive in appearance; morally reprehensible
Example
The old building looked ugly after years of neglect.
El edificio viejo se veía feo después de años de descuido.
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.
B2 adjective /ʌnˈsuːtəbl/

Unsuitable

inapropiado; inapto
Meaning
not fitting or appropriate for a particular purpose or situation
Example
This formal dress is unsuitable for a casual beach party.
Este vestido formal es inapropiado para una fiesta de playa casual.
B2 adjective /ʌnəˈfreɪd/

unafraid

sin miedo
Meaning
Not feeling fear; brave or courageous
Example
She walked into the dark room, unafraid of what might be inside.
Ella entró en la habitación oscura, sin miedo de lo que pudiera haber dentro.
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 verb /ʌnˈkɔrk/

uncork

destapar
Meaning
To remove the cork from a bottle; to open a bottle, especially of wine
Example
He uncorked the wine and poured a glass for everyone.
Destapó el vino y sirvió un vaso para todos.
A2 adjective /ʌnˈhel.θi/

Unhealthy

insalubre; no saludable
Meaning
harmful to health; not in good health; detrimental to well-being
Example
Eating too much fast food is unhealthy for your body.
Comer demasiada comida rápida es insalubre para tu cuerpo.
B2 adjective /ʌnprəˈfɛʃ.ən.əl/

Unprofessional

no profesional
Meaning
not conforming to the standards expected in a particular profession
Example
His unprofessional behavior led to his dismissal from the company.
Su comportamiento no profesional llevó a su despido de la empresa.
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 adjective /juːˈnɪsənənt/

unisonant

armonioso
Meaning
Sounding together or in harmony.
Example
The unisonant voices created a powerful effect.
Las voces armoniosas crearon un efecto poderoso.
C1 adjective /ʌnˈfɛtərd/

unfettered

libre
Meaning
not restricted or confined; free
Example
The artist enjoyed unfettered freedom of expression.
El artista disfrutó de la libertad ilimitada de expresión.
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.
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.
C2 adjective /ˈɜːrsaɪn/

ursine

osoide
Meaning
Relating to or resembling a bear.
Example
The man’s ursine strength amazed everyone.
La fuerza osoide del hombre sorprendió a todos.
C2 noun /ˈjuːnɪvəˌlɛns/

univalence

univalencia
Meaning
The state of having a single valence or combining power, especially in chemistry.
Example
Hydrogen is characterized by its univalence in chemical reactions.
El hidrógeno se caracteriza por su univalencia en las reacciones químicas.
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 adverb /ʌnˈwɪlɪŋli/

unwillingly

de mala gana
Meaning
in a way that shows reluctance or lack of desire; not willingly
Example
She unwillingly agreed to attend the meeting.
Ella aceptó asistir a la reunión de mala gana.
C1 noun /ˌʌnprɪˈdɪktəˌbɪləti/

unpredictability

imprevisibilidad
Meaning
The quality of being impossible to predict or anticipate.
Example
The unpredictability of the weather made the trip uncertain.
La imprevisibilidad del clima hizo que el viaje fuera incierto.
B1 adverb /ˌʌpsaɪd ˈdaʊn/

Upside-down

al revés
Meaning
with the upper part at the bottom; in or into a reversed position
Example
The picture was hanging upside-down on the wall.
La foto estaba colgada al revés en la pared.
B2 adjective /ʌnˈfeɪ.vər.ə.bəl/

Unfavourable

desfavorable; adverso
Meaning
not helpful or advantageous; adverse
Example
The weather conditions were unfavourable for our outdoor event.
Las condiciones climáticas fueron desfavorables para nuestro evento al aire libre.
C2 adjective /ˌʌltrəˈmʌndeɪn/

ultramundane

ultramundano
Meaning
Relating to things beyond the physical world; supernatural or transcendental.
Example
Philosophers often discuss ultramundane realities beyond human perception.
Los filósofos a menudo discuten las realidades ultramundanas más allá de la percepción humana.
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.
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.
C2 adjective /ˌʌn.təˈwɔːrd/

untoward

inesperado
Meaning
Unexpected and inappropriate or inconvenient.
Example
The meeting ended without any untoward incidents.
La reunión terminó sin incidentes inesperados.
C1 adjective /ˌʌnɪnˈhɪbɪtɪd/

uninhibited

desinhibido
Meaning
Not restrained or restricted; free in behavior or expression.
Example
She gave an uninhibited laugh at the joke.
Ella dio una risa desinhibida al chiste.
B2 verb /ʌnˈveɪl/

unveil

desvelar
Meaning
to reveal or disclose something, especially in a formal manner
Example
The company will unveil a new product next week.
La compañía desvelará un nuevo producto la próxima semana.
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.
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 verb /ʌpˈruːt/

uproot

desarraigar
Meaning
To pull something out of the ground; to remove or displace completely.
Example
They uprooted the old tree from the garden.
Ellos desenterraron el viejo árbol del jardín.
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.
C2 adjective /ʌnˈfeɪnd/

unfeigned

genuino
Meaning
genuine; not pretended or insincere
Example
She expressed unfeigned joy at her friend's success.
Ella expresó una alegría genuina por el éxito de su amiga.
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.
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.
C1 adjective /ʌnˈmaɪndfəl/

Unmindful

despreocupado; descuidado;
Meaning
not paying attention; careless; heedless
Example
She was unmindful of the danger around her.
Ella no prestaba atención al peligro a su alrededor.
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.
B2 adjective /ʌnˈfeɪv(ə)rəbəl/

unfavorable

desfavorable
Meaning
not beneficial or advantageous; showing disapproval or opposition
Example
The proposal received an unfavorable response from the committee.
La propuesta recibió una respuesta desfavorable del comité.
C1 adjective /ʌnˈsəʊʃəl/

unsocial

antisocial
Meaning
not enjoying the company of others; avoiding social interaction; contrary to social norms
Example
He prefers unsocial hours so he can work alone without interruptions.
Prefiere horarios antisociales para trabajar solo.
A1 verb /juːz/

use

utilizar
Meaning
to employ something for a purpose; to take advantage of
Example
I use my computer for work and entertainment.
Yo uso mi computadora para trabajar y entretenerme.
B1 noun /ˈjuːs.fəl.nəs/

Usefulness

utilidad
Meaning
the quality of being useful; practical value or helpfulness
Example
The usefulness of this tool became apparent during the project.
La utilidad de esta herramienta se hizo evidente durante el proyecto.
C2 adjective /ˌʌnrɪˈmɪtɪŋ/

unremitting

ininterrumpido
Meaning
Never relaxing or stopping; persistent.
Example
Her unremitting efforts finally paid off.
Sus esfuerzos ininterrumpidos finalmente dieron fruto.
B1 adjective /ʌnˈlaɪkli/

Unlikely

improbable; poco probable
Meaning
not likely to happen; improbable
Example
It's unlikely to rain today with such clear skies.
Es poco probable que llueva hoy con cielos tan despejados.
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.
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.
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.
C2 adjective /ʌnˈstɪntɪŋ/

unstinting

generoso
Meaning
given generously without holding back
Example
She received unstinting support from her family.
Ella recibió un apoyo generoso de su familia.
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.
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 ʌnˈtʃɑːtɪd

uncharted

inexplorado
Meaning
Not mapped or surveyed; unknown or unexplored.
Example
The mission aimed to explore uncharted areas of the planet.
La misión tenía como objetivo explorar áreas inexploradas del planeta.
B1 verb /ʌnˈlɒk/

unlock

desbloquear
Meaning
to open something that is locked; to make something accessible or available
Example
She used the key to unlock the door.
Usó la llave para desbloquear la puerta.
C1 adjective /ˌʌnəˈsjuːmɪŋ/

unassuming

modesto
Meaning
Not pretentious or arrogant; modest.
Example
Despite his success, he remained unassuming and humble.
A pesar de su éxito, siguió siendo modesto y humilde.
B1 adverb /ʌnˈfɔːrtʃənətli/

Unfortunately

desafortunadamente
Meaning
used to express regret or disappointment about something
Example
Unfortunately, the weather was bad for our picnic.
Desafortunadamente, el tiempo estuvo mal para nuestro picnic.
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.
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.
A1 preposition/conjunction /ʌnˈtɪl/

until

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

unkindly

cruelmente
Meaning
in a cruel, harsh, or unsympathetic manner
Example
She spoke unkindly about her colleague during the meeting.
Ella habló cruelmente de su colega durante la reunión.
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 adjective /ʌnˈflɛdʒd/

unfledged

inexperto
Meaning
Inexperienced, immature, or not fully developed.
Example
The unfledged writer struggled to complete his first novel.
El escritor inexperto luchó por completar su primera novela.
C2 adjective /ˌʌnsɛrəˈmoʊniəs/

unceremonious

sin ceremonias/rudo
Meaning
Done without formality or courtesy; abrupt or rude.
Example
He made an unceremonious exit from the party.
Él hizo una salida sin ceremonias de la fiesta.
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.
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.
B1 adjective /ʌnˈlaɪk/

Unlike

diferente; no similar
Meaning
different from; not similar to
Example
Unlike his brother, he prefers quiet activities.
A diferencia de su hermano, él prefiere actividades tranquilas.
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.
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 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.
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.
B1 adjective /ˈɜːrdʒənt/

Urgent

urgente
Meaning
requiring immediate action or attention; pressing
Example
The patient needs urgent medical attention.
El paciente necesita atención médica urgente.
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.
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.
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 adjective /ʌnˈwaɪz/

unwise

imprudente
Meaning
Showing poor judgment; not sensible or prudent.
Example
It would be unwise to invest all your money in one company.
Sería imprudente invertir todo tu dinero en una sola empresa.
B2 adjective /ʌnˈiːkwəl/

Unequal

desigual; injusto;
Meaning
not the same in quantity, size, or value; not fair or just
Example
The distribution of wealth is unequal in many countries.
La distribución de la riqueza es desigual en muchos países.
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.
A1 adjective /juːzd/

used

usado
Meaning
having already been used
Example
This is a used car.
Este es un coche usado.
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.
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 /ʌnˈtʃeɪst/

Unchaste

inmoral; impuro;
Meaning
not celibate; having engaged in sexual relations; lacking moral purity
Example
The conservative society considered her behavior unchaste and improper.
La sociedad conservadora consideró su comportamiento inmoral e inapropiado.
C2 noun /ˈʌŋkʃən/

unction

unción
Meaning
The act of anointing as part of a religious or ceremonial ritual; excessive or insincere flattery.
Example
The priest performed the holy unction with solemnity.
El sacerdote realizó la santa unción con solemnidad.
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.
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.
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.
B2 adjective /ˈʌpˌraɪt/

Upright

honesto y moralmente correcto; vertical o erecto en posición
Meaning
honest and morally correct; vertical or erect in position
Example
She is known for being an upright and honest businesswoman.
Ella es conocida por ser una empresaria honesta y recta.
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.
C1 adjective /ˌʌnbɪˈliːvɪŋ/

unbelieving

incrédulo
Meaning
Not willing or able to believe; skeptical or doubtful
Example
She gave him an unbelieving look when he claimed to have met a celebrity.
Ella le dio una mirada incrédula cuando afirmó haber conocido a una celebridad.
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.
B2 adjective /ˌʌnɪnˈfɔːrmd/

uninformed

desinformado
Meaning
lacking knowledge or awareness about a particular subject; not educated or informed
Example
The decision was made by an uninformed committee.
La decisión fue tomada por un comité desinformado.
B1 adjective /ʌnˈedjʊkeɪtɪd/

Uneducated

analfabeto; no educado
Meaning
lacking education; not having received formal schooling or training
Example
Many uneducated workers struggle to find well-paying jobs.
Muchos trabajadores analfabetos luchan por encontrar empleos bien remunerados.
C1 adjective /ˌʌndərˈsteɪtɪd/

understated

subestimado
Meaning
Presented in a subtle and restrained way.
Example
She wore an elegant but understated dress.
Ella llevaba un vestido elegante pero subestimado.
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 verb /ʌnˈfɛtər/

unfetter

desatar
Meaning
to release from restraint or restriction; to free
Example
The new law will unfetter small businesses from excessive regulations.
La nueva ley liberará a las pequeñas empresas de regulaciones excesivas.
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.
B2 verb /ʌnˈkʌvə(r)/

uncover

descubrir
Meaning
to reveal something that was hidden or secret
Example
The investigation uncovered new evidence.
La investigación descubrió nuevas pruebas.
B1 adjective /ʌnˈnoʊn/

Unknown

desconocido
Meaning
not known or identified; unfamiliar
Example
The author of this letter remains unknown.
El autor de esta carta sigue siendo desconocido.
A2 preposition /əˈpɒn/

upon

sobre
Meaning
on or immediately after
Example
Upon hearing the news, he rushed to the hospital.
Al escuchar la noticia, corrió al hospital.
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.
B2 adjective /ˌʌnkənˈtroʊld/

uncontrolled

incontrolado
Meaning
not restrained or managed; lacking control
Example
The wildfire spread in an uncontrolled manner, causing widespread damage.
El incendio forestal se extendió de manera incontrolada, causando daños generalizados.
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.
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.
C1 adjective /ˌʌnəˈkaʊntəbl/

unaccountable

inexplicable
Meaning
Not able to be explained or justified.
Example
She felt an unaccountable fear as she entered the dark room.
Ella sintió un miedo inexplicable al entrar en la habitación oscura.
C1 adjective /ˌʌnfɔːrˈsiːn/

unforeseen

inesperado
Meaning
Not anticipated or predicted; unexpected.
Example
The project faced unforeseen challenges that delayed its completion.
El proyecto enfrentó desafíos imprevistos que retrasaron su finalización.
A2 verb /ʌpˈset/

upset

molestar
Meaning
to make someone worried, sad, or angry; to disturb
Example
The bad news upset everyone.
La mala noticia upset a todos.
C1 adjective /ʌnˈɡɑː.dɪd/

Unguarded

desprotegido, descuidado
Meaning
not protected or defended; careless about revealing private thoughts or information
Example
In an unguarded moment, she revealed her true feelings about the project.
En un momento sin protección, ella reveló sus verdaderos sentimientos sobre el proyecto.
C1 verb /ʌnˈɜːθ/

unearth

desenterrar
Meaning
To dig up from the ground or to discover something hidden.
Example
Archaeologists unearthed ancient artifacts at the site.
Los arqueólogos desenterraron artefactos antiguos en el sitio.
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.
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.
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 /ˌʌndəˈɡrædʒuət/

undergraduate

estudiante de pregrado
Meaning
a student who has not yet earned a bachelor's degree
Example
She is an undergraduate studying computer science.
Ella es una estudiante de pregrado estudiando ciencias de la computación.
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.
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 /ʌnˈbæləns/

Unbalanced

desbalanceado; inestable
Meaning
not balanced; lacking stability or equilibrium; mentally unstable
Example
The unbalanced table kept wobbling.
La mesa desbalanceada seguía tambaleando.