C2 adjective /ˌʌnəˈsweɪdʒd/

unassuaged

Meaning

Not made less intense or relieved; unrelieved.

Example

His grief remained unassuaged despite the passage of time.

B2 adjective /ˌʌnəˈveɪləbəl/

unavailable

Meaning

Not able to be obtained, reached, or used; not present or accessible.

Example

The manager was unavailable to take calls during the meeting.

C1 verb /ʌnˈsɛtl/

unsettle

Meaning

To disturb or make someone feel anxious or uneasy.

Example

The sudden news unsettled the entire community.

C2 noun /juːˌtɪlɪˈtɛəriənɪzəm/

utilitarianism

Meaning

The ethical theory that actions are right if they are useful or for the benefit of the majority.

Example

Utilitarianism suggests that we should act to maximize overall happiness.

B2 adjective /ʌnˈhɜːd/

Unheard

Meaning

not heard or listened to; not given a hearing; unknown or unfamiliar

Example

His complaints went unheard by the management.

B1 adjective /ˌʌnsəkˈsesfl/

Unsuccessful

Meaning

not achieving desired aims or results; failing to accomplish a purpose

Example

His unsuccessful attempt to climb the mountain left him disappointed.

B2 adjective /ˌʌndɪˈveləpt/

Undeveloped

Meaning

not yet developed; immature or primitive

Example

The undeveloped land was later turned into a park.

C1 adjective /ʌnˈweɪ.vər.ɪŋ/

unwavering

Meaning

Steady or resolute; not wavering.

Example

He showed unwavering dedication to his goal.

C2 adjective ˌʌn.əˈseɪ.lə.bəl

unassailable

Meaning

Unable to be attacked, questioned, or defeated.

Example

An unassailable position ensures dominance.

C1 adjective /ʌnˈsəʊʃəl/

unsocial

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.

B2 adverb juːˈnæn.ɪ.məs.li

unanimously

Meaning

With the agreement of all people involved; without opposition.

Example

The proposal was unanimously accepted.

B2 adjective /ʌnˈwɪl.ɪŋ/

Unwilling

Meaning

not ready to do something; reluctant; not wanting to do

Example

He was unwilling to share his secret with anyone.

C2 adjective /ʌnˈflɛdʒd/

unfledged

Meaning

Inexperienced, immature, or not fully developed.

Example

The unfledged writer struggled to complete his first novel.

B2 adjective /ˈʌpˌhɪl/

Uphill

Meaning

difficult; requiring great effort; sloping upward

Example

Learning a new language can be an uphill battle.

B2 adjective /ˌʌndɪˈzaɪərəbl/

Undesirable

Meaning

not wanted or wished for; harmful or unpleasant

Example

The new policy had several undesirable consequences.

C1 verb /ʌnˈroʊl/

unroll

Meaning

to open something that is rolled up; to spread out gradually

Example

She unrolled the map on the table to find the route.

C2 adjective /ˌʌnɪmˈpiːtʃəbl/

unimpeachable

Meaning

Not able to be doubted, questioned, or criticized; completely trustworthy.

Example

She is known for her unimpeachable honesty.

C1 adjective /ˌʌnbɪˈliːvɪŋ/

unbelieving

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.

C1 adjective /ʌnˈskeɪðd/

unscathed

Meaning

Without suffering any injury, damage, or harm.

Example

She escaped from the accident unscathed.

B2 adjective /ʌnprəˈfɛʃ.ən.əl/

Unprofessional

Meaning

not conforming to the standards expected in a particular profession

Example

His unprofessional behavior led to his dismissal from the company.

C2 verb /ʌpˈhiːv/

upheave

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.

C2 adjective /ʌnˈlɛtəd/

unlettered

Meaning

lacking education or the ability to read and write; illiterate

Example

The unlettered villagers relied on oral traditions to preserve their history.

B2 adjective /ˌʌnˈnoʊ.tɪst/

Unnoticed

Meaning

not seen or observed; ignored

Example

His hard work went unnoticed by his manager.

B1 adjective /ʌnˈfɔːr.tʃən.ət/

Unfortunate

Meaning

having bad luck; regrettable or unlucky

Example

It was unfortunate that the meeting was cancelled at the last minute.

A2 adjective /ʌnˈlʌki/

Unlucky

Meaning

having bad luck; unfortunate

Example

He was unlucky to miss the winning shot.

C1 adjective ʌnˈwɔːr.rən.tɪd

unwarranted

Meaning

Not justified or necessary; without good reason.

Example

His anger toward the staff was completely unwarranted.

B2 adjective /ˌʌnɪˈmædʒənəbəl/

Unimaginable

Meaning

impossible to conceive; beyond imagination

Example

The scale of destruction was unimaginable until we saw it firsthand.

C1 adjective /ʌnˈkæni/

uncanny

Meaning

Strange or mysterious, especially in an unsettling way.

Example

She has an uncanny ability to predict the future.

B2 adjective /ʌnəˈfreɪd/

unafraid

Meaning

Not feeling fear; brave or courageous

Example

She walked into the dark room, unafraid of what might be inside.

C2 adjective /ʌpˈrɔːr.i.əs/

uproarious

Meaning

Extremely funny or noisy; causing loud laughter or commotion.

Example

The comedian's jokes were absolutely uproarious.

B2 adjective /ʌnprəˈdʌk.tɪv/

Unproductive

Meaning

not achieving much; not producing good results

Example

The meeting was unproductive and wasted everyone's time.

B2 adverb /ʌnˈkɒnʃəsli/

unconsciously

Meaning

without being aware of one's actions or surroundings

Example

She unconsciously tapped her foot to the rhythm of the music.

C1 adjective ˌʌn.pəˈtɜːbd

unperturbed

Meaning

Not worried or disturbed by something; calm and composed.

Example

She remained unperturbed despite the challenges.

C1 adjective /ʌnˈspiːkəbl/

unspeakable

Meaning

too bad or shocking to be expressed in words

Example

The survivors endured unspeakable horrors during the war.

B2 adjective /ˌʌnəˈweər/

Unaware

Meaning

not knowing or realizing; having no knowledge of something

Example

She was completely unaware of the danger.

C2 noun /ˌjuːzɜːrˈpeɪʃən/

usurpation

Meaning

The act of taking someone's power or property illegally or by force.

Example

The general's usurpation of the presidency led to political unrest.

B2 adjective /ˌʌnˈkɔːrdɪneɪtɪd/

uncoordinated

Meaning

lacking coordination, not well-organized or clumsy in movement

Example

His movements were uncoordinated, making him prone to accidents.

B1 adjective /ʌnˈwɒn.tɪd/

Unwanted

Meaning

not desired or welcome; not wanted

Example

He felt like an unwanted guest at the meeting.

C1 adjective /ʌnˈθɪŋkɪŋ/

unthinking

Meaning

done without careful thought; automatic or thoughtless

Example

His unthinking remark hurt her feelings.

A1 verb /juːz/

use

Meaning

to employ something for a purpose; to take advantage of

Example

I use my computer for work and entertainment.

B2 adjective /ˌʌnəˈfɪʃ.əl/

Unofficial

Meaning

not officially authorized or confirmed; informal

Example

The unofficial results showed a close race.

B2 adjective /ʌnhaɪˈdʒiːnɪk/

Unhygienic

Meaning

not clean; lacking proper sanitation

Example

The restaurant was closed due to unhygienic conditions in the kitchen.

C1 adjective /ˌʌnfɔːrθˈkʌmɪŋ/

unforthcoming

Meaning

Not willing to talk or provide information; uncooperative.

Example

The witness was unforthcoming about what he had seen.

C1 adjective /ˌʌnprɪˈtɛnʃəs/

unpretentious

Meaning

modest; not attempting to impress others with appearance or importance

Example

She lives in an unpretentious home but is very happy.

C1 adjective /ʌnˈɒnəd/

unhonoured

Meaning

not respected or given the recognition that is deserved; treated without honor

Example

He felt unhonoured after his years of service were ignored.

C2 noun /ˌjuːnɪˈtɛəriən/

unitarian

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.

B2 adjective /ˈjuː.nɪ.faɪd/

unified

Meaning

Made into a whole or joined together.

Example

A unified approach fosters better outcomes.

B2 noun /ˈʌndərkləʊðz/

underclothes

Meaning

Clothing worn beneath outer clothes, such as underwear or lingerie

Example

He folded his underclothes neatly before packing them.

B1 adjective /ʌnˈjuzd/

Unused

Meaning

not being used; not having been used before

Example

There are many unused rooms in this old mansion.

A2 adjective /ˈʌɡ.li/

Ugly

Meaning

unpleasant or repulsive in appearance; morally reprehensible

Example

The old building looked ugly after years of neglect.

C1 adjective /ʌnˈfɔːltərɪŋ/

unfaltering

Meaning

Steady and resolute; not weakening or hesitating

Example

She continued with unfaltering determination.

B2 adjective /ʌnˈiːkwəl/

Unequal

Meaning

not the same in quantity, size, or value; not fair or just

Example

The distribution of wealth is unequal in many countries.

C1 adjective /ʌnˈkleɪmd/

Unclaimed

Meaning

not claimed by anyone; not demanded or requested; abandoned or ownerless

Example

The unclaimed luggage was stored in the airport's lost property department.

B2 adjective /ʌnˈiːvən/

Uneven

Meaning

not level or smooth; not regular or consistent

Example

The road was uneven and full of potholes.

B2 adjective /ˌʌnkənˈtroʊld/

uncontrolled

Meaning

not restrained or managed; lacking control

Example

The wildfire spread in an uncontrolled manner, causing widespread damage.

C2 verb /ʌnˈfrɒk/

unfrock

Meaning

To remove a priest from his position or deprive someone of a rank.

Example

The corrupt priest was unfrocked after the investigation.

C2 adjective /ʌkˈsɔːriəs/

uxorious

Meaning

excessively fond of or submissive to one's wife

Example

He was so uxorious that he agreed with everything his wife said.

B1 noun /ˈjuːnjən/

Union

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.

A2 noun /ˈʌndərweər/

underwear

Meaning

Clothing worn beneath outer clothes, typically next to the skin.

Example

He bought new underwear for the trip.

C2 noun juːˈbɪkwɪti

ubiquity

Meaning

The fact of appearing everywhere or of being very common.

Example

The ubiquity of smartphones has transformed communication.

C1 noun /ˌʌnbɪˈliːf/

Unbelief

Meaning

lack of religious belief; skepticism or doubt

Example

His unbelief in the supernatural made him a skeptic.

C2 noun/verb /ˈʌpˌkæst/

upcast

Meaning

Verb: To cast or throw upward. Noun: Something thrown or directed upward.

Example

The fisherman upcast his net into the air.

B2 noun ˈjuːnəti

unity

Meaning

The state of being united or joined as a whole.

Example

Unity among people led to victory.

C1 adjective /ʌnˈɜːrθli/

unearthly

Meaning

Strange or unnatural in a way that seems not of this world

Example

The forest was filled with an unearthly glow.

B1 adjective /ˌʌnɪkˈspektɪd/

Unexpected

Meaning

not expected or anticipated; surprising

Example

The unexpected news left everyone speechless.

C2 adjective /ˈʌŋk.tʃu.əs/

unctuous

Meaning

Excessively flattering or ingratiating; oily in texture.

Example

His unctuous tone made everyone uncomfortable.

A2 adjective /ˈjuːs.ləs/

Useless

Meaning

having no beneficial purpose; not useful

Example

This broken computer is completely useless.

C2 adjective /ˌʌnsɛrəˈmoʊniəs/

unceremonious

Meaning

Done without formality or courtesy; abrupt or rude.

Example

He made an unceremonious exit from the party.

B2 adjective /ʌnˈriːdəbl/

unreadable

Meaning

not able to be read or understood clearly; illegible

Example

The doctor’s handwriting was completely unreadable.

A1 preposition/conjunction /ʌnˈtɪl/

until

Meaning

up to the time of

Example

I will wait until you come back.

B1 adjective /juːˈnaɪtɪd/

United

Meaning

joined together for a common purpose; in agreement

Example

The team was united in their goal to win.

B2 adjective /ʌnˈɑːrmd/

unarmed

Meaning

Not equipped with or carrying weapons

Example

The police found the suspect unarmed during the search.

B1 adjective /ʌnˈʃʊr/

unsure

Meaning

not certain or confident; feeling doubt

Example

She felt unsure about the decision.

B2 adjective /ʌnˈθɪŋkəbl/

Unthinkable

Meaning

impossible to conceive or imagine; beyond belief or consideration

Example

It was unthinkable that such a tragedy could happen in our peaceful town.

C1 noun ˌʌndərˈprɪvəlɪdʒd ɡruːps

underprivileged groups

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.

C1 noun /ˈʌp.rɔːr/

Uproar

Meaning

a loud and emotional noise or disturbance; public outcry

Example

The announcement caused an uproar among the students.

B2 adjective /ʌnˈbæləns/

Unbalanced

Meaning

not balanced; lacking stability or equilibrium; mentally unstable

Example

The unbalanced table kept wobbling.

C2 adjective /ʌnˈfeɪnd/

unfeigned

Meaning

genuine; not pretended or insincere

Example

She expressed unfeigned joy at her friend's success.

C1 adjective /ʌnˈdɔːntɪd/

Undaunted

Meaning

not intimidated or discouraged by difficulty, danger, or disappointment

Example

Despite the setbacks, she remained undaunted in pursuing her goals.

B1 verb /ˈʌpˌɡreɪd/

upgrade

Meaning

to raise something to a higher standard, improve

Example

We decided to upgrade the software to the latest version.

B2 adjective /ʌnˈtʃeɪndʒəbəl/

Unchangeable

Meaning

not able to be changed or altered; fixed and permanent

Example

The laws of physics are unchangeable principles that govern the universe.

B2 adjective /ˌʌnrɪˈzɒlvd/

unresolved

Meaning

not solved or settled; remaining undecided or unclear

Example

The dispute remains unresolved despite several meetings.

B1 adjective /ˈɜːrdʒənt/

Urgent

Meaning

requiring immediate action or attention; pressing

Example

The patient needs urgent medical attention.

B2 adjective /ʌnˈkɒn.ʃəs/

Unconscious

Meaning

not awake and aware of one's surroundings; done or existing without one realizing

Example

The patient was unconscious for several hours after the surgery.

B1 adjective /ʌnˈwel/

Unwell

Meaning

not in good health; feeling sick or ill

Example

She has been feeling unwell since yesterday.

B2 adverb /ˈʌltəmətli/

ultimately

Meaning

in the end, after everything else

Example

Ultimately, we decided to go ahead with the project.

C2 adjective /ʌnˈtiːtʃəbəl/

unteachable

Meaning

not able or willing to learn; resistant to instruction or guidance

Example

He was so stubborn that he became almost unteachable.

A1 interjection /ʌ/

uh

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.

B1 preposition, adverb, adjective /ˌʌndərˈniːθ/

underneath

Meaning

Located directly below or beneath something

Example

The keys were hidden underneath the pile of papers.

C1 adjective /ʌnˈsɜːrvɪsəbəl/

Unserviceable

Meaning

not in working order; unable to be used; defective

Example

The old computer became unserviceable after the system crash.

B2 noun /ˌʌndəˈɡrædʒuət/

undergraduate

Meaning

a student who has not yet earned a bachelor's degree

Example

She is an undergraduate studying computer science.

C1 adjective /ʌnˈtoʊld/

Untold

Meaning

very great in amount or degree; countless; immeasurable

Example

The earthquake caused untold damage to the city.

C2 adjective /ʌnˈtʃeɪst/

Unchaste

Meaning

not celibate; having engaged in sexual relations; lacking moral purity

Example

The conservative society considered her behavior unchaste and improper.

C1 noun /ʌnˈfeɪθfʊlnəs/

unfaithfulness

Meaning

the quality of being disloyal or not faithful; breach of trust or fidelity

Example

His unfaithfulness led to the end of their marriage.

C2 adjective /ʌnˈflæpəbəl/

unflappable

Meaning

calm and composed, especially in difficult situations

Example

Despite the crisis, he remained unflappable and confident.

C1 verb /ʌnˈkɔrk/

uncork

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.

B2 adjective /ʌnˌkənˈdɪʃ.ən.əl/

Unconditional

Meaning

not subject to any conditions; complete and absolute

Example

She offered her unconditional support to her friend in need.

B2 adjective /ʌnˈstɛdi/

unsteady

Meaning

not firm or stable; likely to change or fail

Example

She felt unsteady on her feet after the long journey.

C1 adjective /ˈʌndərhænd/

underhand

Meaning

done secretly and dishonestly; deceitful

Example

The politician was accused of using underhand tactics to win the election.

C2 adjective /ˈʌndjʊleɪtɪŋ/

undulating

Meaning

Having a smoothly rising and falling form or motion like waves.

Example

We drove through undulating hills.

B2 adjective /ʌnˈendɪŋ/

Unending

Meaning

continuing forever; without end

Example

The unending rain made the day feel gloomy.

B2 adjective ʌnˈprɛsɪˌdɛntɪd

unprecedented

Meaning

Never done or known before; without previous example.

Example

Unprecedented advancements in science changed human lives.

B1 adverb /ʌnˈjuːʒuəli/

unusually

Meaning

in a way that is not typical or expected; to an uncommon degree

Example

It was unusually cold for this time of year.

B1 noun /juːˈten.səlz/

Utensils

Meaning

tools or implements used for cooking, eating, or serving food

Example

Please wash all the cooking utensils after preparing dinner.

C2 noun /ˈjuːnɪvəˌlɛns/

univalence

Meaning

The state of having a single valence or combining power, especially in chemistry.

Example

Hydrogen is characterized by its univalence in chemical reactions.

B1 verb /ʌnˈlɒk/

unlock

Meaning

to open something that is locked; to make something accessible or available

Example

She used the key to unlock the door.

B2 noun /ˈjuː.sɪdʒ/

Usage

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.

C2 adjective /ʌnˈblʌʃɪŋ/

Unblushing

Meaning

showing no shame or embarrassment; boldly shameless

Example

He told the unblushing lie without any hesitation.

B1 adjective /ʌnˈfeər/

Unfair

Meaning

not right or just; treating people in a way that favors some over others

Example

It's unfair to blame her for something she didn't do.

B2 verb /ɜːrdʒ/

urge

Meaning

to strongly encourage or try to persuade someone to do something

Example

Doctors urge patients to exercise regularly.

B1 adjective /ʌnˈeɪ.bəl/

Unable

Meaning

lacking the power, skill, or means to do something

Example

He was unable to attend the meeting.

C2 adjective /ʌnˈwəʊntɪd/

unwonted

Meaning

Unusual, uncommon, or out of the ordinary.

Example

She spoke with an unwonted gentleness that surprised everyone.

A2 adjective /ʌnˈhæp.i/

Unhappy

Meaning

not happy; feeling sad or displeased; unfortunate or undesirable

Example

He was unhappy with the results of his exam.

B2 adjective /ʌnˈbaɪəst/

unbiased

Meaning

Not showing prejudice; impartial and fair.

Example

The report gave an unbiased view of the situation.

B1 noun /ˈjuːnɪvɜːrs/

Universe

Meaning

all existing matter and space; the cosmos

Example

Scientists study the universe to understand its mysteries.

C2 adjective /ʌnˈspɛərɪŋ/

unsparing

Meaning

Showing no mercy or generosity; harsh or severe.

Example

The critic was unsparing in his review of the play.

B2 noun /ʌnˈsɜːrtənti/

Uncertainty

Meaning

the state of being uncertain; doubt or lack of sureness

Example

The uncertainty about the weather delayed our trip.

C2 adjective /juːˈʒʊəriəs/

usurious

Meaning

Charging excessively high interest rates on loans.

Example

The bank was accused of offering loans at usurious rates.

C1 adjective /ˌʌnˈpɑr.də.nə.bəl/

Unpardonable

Meaning

too bad to be forgiven; inexcusable

Example

His betrayal of trust was an unpardonable offense.

B1 adjective /ˈʌpər/

upper

Meaning

higher in position or rank

Example

The upper floor of the building is under renovation.

C1 adjective /ʌnˈsoʊld/

unsold

Meaning

not sold; remaining without a buyer

Example

The unsold goods were returned to the warehouse.