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English words starting with U — with CEFR levels
240 words from A1 to C2. Click a word to learn it in its unit.
- A1uglyadj · not nice to look at
- B2ultimateadj · final or most important
- B2ultimatelyadv · in the end, after everything else
- A1umbrellan · a tool that keeps rain off you
- B1unableadj · not able to do something
- B2unacceptableadj · not good enough to be allowed
- C2unadulteratedadj · pure, with nothing added
- B1unafraidadj · not afraid
- B2unashamedlyadv · without feeling embarrassed
- C1unassistedadj · done without help
- B2unattractiveadj · not pleasant to look at
- B2unawareadj · not knowing about something
- B2unbearableadj · too bad to accept or stand
- B2unbeatableadj · impossible to defeat
- B1unbelievableadj · too amazing to believe
- C2uncannyadj · strange and slightly frightening
- A2uncertainadj · not sure
- B1uncertaintyn · the state of not being sure
- B2unchangedadj · staying the same, not changed
- B2uncharacteristicadj · not typical of a person
- A1unclen · the brother of your mother or father
- B1unclearadj · not easy to understand
- B2unclearlyadv · in a way that is hard to understand
- A2uncomfortableadj · not nice or relaxing to sit in
- B2uncomfortablyadv · in a way that is not relaxed
- B2uncommonadj · rare; not often found
- B2unconcernedadj · not worried about something
- B2unconsciousadj · not awake and unaware of things
- B1uncontrollableadj · impossible to stop or control
- C1unconventionaladj · different from what is normal or traditional
- C1unconvincingadj · not making people believe or accept it
- C1unconvincinglyadv · in a way that fails to persuade people
- B1uncoverv · to find out something that was hidden
- C1undauntedadj · not afraid or discouraged by difficulty
- C2undemonstrativeadj · not openly showing feelings
- C2undemonstrativelyadv · in a way that hides your feelings
- A1underprep · below something
- B1underageadj · too young to do something by law
- B2underestimatev · to think something is smaller or easier than it is
- B1undergov · to experience something difficult
- B2undergraduaten · a student working toward a first degree
- B2undergroundadj/adv · below the surface of the ground
- A1underlinen · a line drawn under a word
- B1underlinev · to draw a line under a word
- B1underneathprep · below or under something
- B2underneathadv · below something, under it
- B1underpantsn · underwear worn under trousers
- B2underseaadj · below the surface of the sea
- A2understandv · to know what something means
- B2understandableadj · easy to understand or sympathize with
- B2understandingn/adj · knowledge or sympathy about something or someone
- B2undertakev · to start and be responsible for a task
- A2underwateradj · below the surface of water
- B2underwateradv · below the surface of water
- B2underwearn · clothes worn next to the skin
- C2undiminishingadj · not becoming smaller or weaker
- B1undov · to open or untie something
- B2undoubtedlyadv · without any doubt; certainly
- B2undreamedadj · never imagined or thought possible
- B1undressv · to take clothes off yourself or another person
- B2undressedadj · not wearing clothes
- B2uneasen · a worried feeling that something is wrong
- B2uneasilyadv · in a nervous or uncomfortable way
- A2uneasyadj · worried and not comfortable
- B1unemployedadj · without a job
- B1unemploymentn · not having a job
- C2unencumberedadj · free from debt or burdens
- B2unenthusiasticadj · not excited or interested
- C1unenviableadj · not wanted because it is difficult or unpleasant
- C1unenviablyadv · in a way nobody would want to be
- C2unequivocaladj · clear and with no doubt
- C2unequivocallyadv · clearly, with no doubt
- B2unevenadj · not flat or smooth
- C1uneventfuladj · without anything exciting or unusual happening
- C2unexceptionaladj · ordinary; not special in any way
- C2unexceptionallyadv · in an ordinary way, with nothing special
- C2unexcusedadj · without an accepted reason or permission
- B1unexpectedadj · surprising
- B1unexpectedlyadv · in a way you did not expect
- A2unfairadj · not right or equal
- B1unfairlyadv · in a way that is not fair
- B2unfamiliaradj · not known or not seen before
- B2unfashionableadj · not popular or in style
- C2unfeasibleadj · not possible to do
- C2unfeasiblyadv · to a degree that makes it impossible
- B1unfitadj · not in good physical condition
- B1unfoldv · to open something that was folded
- B2unforeseenadj · not expected
- A2unforgettableadj · so good that you will always remember it
- B1unfortunateadj · having bad luck
- A2unfortunatelyadv · sadly; used for bad news
- B1unfriendlyadj · not kind or welcoming to others
- B2ungodlyadj · very unreasonable, especially early
- B2unhappinessn · the state of feeling sad
- A2unhappyadj · not happy
- C2unharriedadj · calm and not rushed or troubled
- A2unhealthyadj · bad for your body
- B1unheardadj · not listened to or not noticed
- B2unhelpfuladj · not giving help
- A2uniformn/adj · special clothes worn by a group
- C1uniformityn · the quality of being the same throughout
- B1unifyv · to join things together into one
- B2unimaginableadj · too great or strange to imagine
- B2unimaginablyadv · in a way that is difficult to imagine
- A2unimportantadj · not important
- C1uninspiringadj · dull and not interesting or exciting
- B1uninterestedadj · not interested in something
- B1uninterestingadj · not interesting
- B1unionn · an organization that protects workers’ rights
- B1uniqueadj · being the only one of its kind
- C1unisonn · all together at the same time
- A2unitn · a part of a course book
- B1unitev · to join together
- B2unitedadj · joined together as a group
- B2universaladj · true or relevant for everyone
- B1universen · all space and everything in it
- A2universityn · a place for studying after school
- B2unjustlyadv · in an unfair way
- B2unkindadj · not nice to others
- A2unknownadj · not known by anyone
- B1unlessconj · if not; except if
- A2unlikeadj · different from
- B2unlikeprep · different from someone or something
- B1unlikelyadj · not probable
- B2unlimitedadj · without any limit
- B2unloadv · to take things off a vehicle
- B2unlockv · to open something that was locked
- B1unluckyadj · having bad luck
- C1unmanageableadj · too difficult or large to deal with
- C1unmannedadj · operated without a person on board
- C2unmediatedadj · direct, with nothing coming between
- B2unmistakableadj · impossible to confuse with another
- B2unmistakablyadv · in a way that is very clear and certain
- C1unmusicaladj · lacking skill or pleasure in music
- C1unmusicallyadv · in a way that sounds bad in music
- B2unnaturaladj · strange; not normal or real
- A2unnecessaryadj · not needed
- C2unnervev · to make someone feel nervous or afraid
- C2unnervingadj · making someone feel nervous or afraid
- C2unnervinglyadv · in a way that makes you feel nervous
- C2unobtrusiveadj · not noticeable; not drawing attention
- C2unobtrusivelyadv · in a way that does not attract attention
- C2unobtrusivenessn · the quality of not attracting attention
- C1unoccupiedadj · not being used by anyone; empty
- B2unofficialadj · not approved or announced by an authority
- B1unpackv · to take things out of a bag or suitcase
- A2unpleasantadj · not nice
- C1unplugv · to disconnect a device from the electricity supply
- B2unpopularadj · not liked by many people
- B1unpredictableadj · changing in a way that cannot be guessed
- C2unpromisingadj · showing little sign of a good result
- C2unravelv · to undo threads or solve a mystery
- B2unrealisticadj · not sensible or possible in real life
- B2unreasonableadj · not fair or sensible
- B2unreliableadj · not able to be trusted
- C1unreliablyadv · in a way you cannot depend on
- B2unrestn · a situation where people are angry and protest
- B2unsafeadj · dangerous; not protected from harm
- B2unsatisfactoryadj · not good enough
- C1unscathingadj · not harsh or damaging
- B2unselfishadj · caring about others more than yourself
- C1unsettlev · to make someone feel worried or upset
- C1unsettlingadj · making you feel worried and uneasy
- B2unstoppableadj · impossible to stop
- B2unsuccessfuladj · not achieving the result wanted
- B2unsuitableadj · not right for a purpose
- B2unsureadj · not certain
- C2unsurpassedadj · better than any other
- C2unsuspectedadj · not known or expected beforehand
- C1unsustainableadj · not able to continue at the same level
- C1unsustainablyadv · in a way that cannot continue long-term
- B2untalentedadj · without natural skill
- C1untanglev · to separate knotted or twisted things
- C1untangledadj · no longer twisted or knotted
- B2unthinkablyadv · in a way too extreme to imagine
- B1untidyadj · not neat or in order
- B2untiev · to open a knot or something tied
- A1untilprep · up to a certain time
- B1untilconj · up to the time when something happens
- B2untoprep · an old word meaning to or until
- B2untreatedadj · not cleaned or given medical care
- B2untrimmedadj · not cut or made neat
- A2unusualadj · different from what is normal
- B1unusuallyadv · more than is normal
- B2unusualnessn · the quality of being strange or different
- B1unwantedadj · not wanted or needed
- C1unwaveringadj · steady and not changing or weakening
- C1unwaveringlyadv · in a steady way that never weakens
- B1unwelladj · not feeling healthy
- B2unwillingadj · not ready to do something
- B2unwiseadj · not sensible
- B2unworldlyadj · not interested in practical or ordinary life
- A1upprep · to a higher place
- A2upadv · towards a higher place or position
- B1up-to-dateadj · modern; having the latest information
- B2upbringingn · the way a child is raised
- B1updatev · to make something more modern with new information
- B2updaten · a new version of software
- B2upgraden/v · to change to a better or newer version
- C1upheavaln · a sudden, big change that causes disorder
- B1upliftedadj · feeling happier and more hopeful
- B1uploadv · to send files to the internet
- A2uponprep · on; used in old stories
- B1upperadj · higher than another part
- B2uprightadj/adv · standing or sitting straight up
- A2upsetadj · unhappy and worried
- B2upsetv · to make someone feel sad or worried
- B2upside downadj/adv · with the top part at the bottom
- A2upstairsadv · on a higher floor of a building
- B1upstairsn/adj · on a higher floor of a building
- B1upwardadj · moving or leading to a higher place
- B2urbanadj · relating to a town or city
- B1urgen · a strong wish to do something
- B2urgev · to strongly encourage someone to do something
- B1urgentadj · needing immediate action
- B2urgentlyadv · very quickly because it is important
- A1uspron · the word for we as object
- B1usagen · the way a word or thing is used
- A1usev · to do a job with something
- A2usen · the purpose of something
- A2usedadj · familiar with something
- B1used tomodal · did regularly in the past, but not now
- A2usefuladj · helpful
- B1uselessadj · not helpful
- B2usern · a person who uses a product or service
- B2usherv · to guide someone to a place
- C1ushern · a person who guides people to seats
- A2usualadj · normal; what happens most often
- A1usuallyadv · most of the time
- C1utensiln · a tool or container used in cooking
- C2utilitarianadj · designed to be useful, not attractive
- B2utilityn · a basic service such as water or electricity
- C2utilizationn · the act of using something effectively
- B2utilizev · to use something for a purpose
- B2utterv · to say something aloud
- C2utteradj · complete, total
- B2utterlyadv · completely; totally