English Words Starting With U

• uncollectible

  adjectivenounLow
  /ˌʌnkəˈlɛktɪb(ə)l/Impossible to collect, especially money that is owed.
• unconcern

  nounC1
  /ˌʌnkənˈsɜːn/A lack of worry or interest; indifference.
• unconditional convergence

  nounC1/C2
  /ˌʌnkənˈdɪʃənəl kənˈvɜːdʒəns/A situation in which two or more things (e.g., economies, data series, opinions) move toward the same point, state, or value without any prerequisites or restrictions.
• unconditioned response

  nounC2
  /ˌʌnkənˈdɪʃənd rɪˈspɒns/An innate, automatic reaction to a specific stimulus that does not require prior learning.
• unconditioned stimulus

  nounAcademic/Technical
  /ˌʌnkənˈdɪʃənd ˈstɪmjʊləs/A stimulus that naturally and automatically triggers a reflexive response without prior learning.
• unconformity

  nounLow (C1-C2)
  /ˌʌnkənˈfɔːmɪti/A lack of conformity; a break or gap in the geological record where younger rock layers are deposited on eroded older rock layers, representing missing time.
• unconscious

  adjectivenounC1
  /ʌnˈkɒnʃəs/The state of being unaware and unresponsive to one's surroundings, typically as a result of injury, illness, or lack of consciousness; also, the deep mental processes not directly available to awareness.
• unconscious bias

  nounMedium-to-High (frequent in academic, business, and social justice contexts)
  /ʌnˈkɒnʃəs ˈbaɪəs/An automatic, unintentional mental association or preference that influences judgments and decisions, often based on social stereotypes.
• unconsciousness

  nounC1
  /ʌnˈkɒnʃəsnəs/The state of being completely unaware of oneself and one's surroundings, typically as a result of injury, illness, or sleep.
• unconstitutional strike

  nounC2
  /ˌʌnkɒnstɪˈtjuːʃənəl straɪk/An industrial action, typically by workers, that is declared illegal by a court because it violates a country's constitution or specific laws governing labour disputes.
• unconstraint

  nounC2 / Very Low Frequency
  /ˌʌnkənˈstreɪnt/The state or quality of being free from constraint, restriction, or inhibition; spontaneous freedom.
• uncontrollable

  adjectivenounB2
  /ˌʌnkənˈtrəʊləb(ə)l/Not able to be controlled, restrained, or managed.
• unconventional warfare

  nounC1/C2
  /ˌʌnkənˈvɛnʃənl ˈwɔːfeə/Military operations conducted by irregular forces using non-standard tactics, often against a conventional military.
• unconventionality

  nounC1
  /ˌʌnkənˌvenʃəˈnæləti/The quality or state of not following accepted customs, rules, or traditional ways of thinking or behaving.
• uncork

  verbverb-transitiveC1 (Less common, but understood by advanced learners)
  /ʌnˈkɔːk/to remove the cork from a bottle, especially one containing wine or champagne.
• uncorrect

  verb-transitiveVery Low (Obsolete/Rare/Specialized)
  /ˌʌnkəˈrɛkt/The act or state of not being corrected, or the quality of lacking correction.
• uncouple

  verbverb-intransitiveverb-transitiveC1
  /ʌnˈkʌp(ə)l/To disconnect or separate things that were joined or linked together.
• uncover

  verbverb-intransitiveverb-transitiveB2
  /ʌnˈkʌvə(r)/to remove a cover or covering from something; to reveal something that was hidden or secret.
• uncross

  verb-transitiveC2
  /ʌnˈkrɒs/To move something (like limbs) from a crossed position back to a straight or parallel position.
• uncrown

  verb-transitiveC2
  /ʌnˈkraʊn/To remove a crown from; to deprive of a crown, royal status, or highest position.

Showing 321–340 of 1514 words.