English Words Starting With U

• univocal

  adjectivenounLow (C2 level vocabulary)
  /ˌjuːnɪˈvəʊk(ə)l/Having only one meaning; unambiguous
• unix

  nounC1
  /ˈjuːnɪks/A family of multitasking, multiuser computer operating systems originally developed in the 1970s at Bell Labs. It is known for its portability, modular design, and philosophy of 'everything is a file'.
• unjoint

  verb-transitiveVery low frequency / Archaic / Technical
  /ʌnˈdʒɔɪnt/to separate or disconnect something at a joint or point of connection.
• unkelos

  nounN/A (Not an established word)
  A non-standard, invented word not found in established dictionaries.
• unkennel

  verbverb-intransitiveverb-transitiveLow (archaic/literary)
  /ʌnˈkɛn(ə)l/To release from or as if from a kennel or confined space; to drive out from a hiding place or den.
• unknit

  verbverb-intransitiveverb-transitiveVery Low
  /ʌnˈnɪt/To undo or separate something that has been knitted or woven together; to untie.
• unknot

  verb-transitiveLow
  /ʌnˈnɒt/To undo or untie a knot.
• unknowable

  adjectivenounC1/C2
  /ʌnˈnəʊəbl̩/Incapable of being known, understood, or discovered by human beings.
• unknown

  adjectivenounB1
  /ʌnˈnəʊn/Not known, familiar, or identified.
• unknown soldier

  nounC1
  /ˌʌnˈnəʊn ˈsəʊldʒə(r)/A soldier, often commemorated at a national monument, whose body could not be identified after a battle, representing all unidentified war dead.
• unlace

  verbverb-transitiveLow
  /ʌnˈleɪs/To undo or loosen the laces of something, typically footwear or clothing.
• unlade

  verbverb-intransitiveverb-transitiveVery Low / Archaic
  /ʌnˈleɪd/To remove a load or cargo, especially from a ship or vehicle.
• unlash

  verbverb-transitiveC2
  /ʌnˈlæʃ/To untie or unfasten something that is secured with a cord, rope, or similar binding.
• unlatch

  verbverb-intransitiveverb-transitiveC1-C2 / Low-frequency
  /ʌnˈlatʃ/to release or open a latch on a door, gate, or window.
• unlawful assembly

  nounC2
  /ʌnˈlɔːf(ə)l əˈsɛmbli/A gathering of three or more people with the intent to commit a crime or to carry out some act, lawful or unlawful, in a manner likely to cause a breach of the peace.
• unlax

  verb-ambitransitiveLow
  /ʌnˈlæks/To relax or unwind, often used humorously or archaically.
• unlay

  verbverb-transitiveVery Low (Rare, Technical)
  /ʌnˈleɪ/To untwist or separate the strands of (a rope or cable).
• unlead

  verbverb-transitiveLow
  /ʌnˈlɛd/To remove lead (the metallic element) from something, or to replace lead with a non-leaded alternative.
• unleaded

  adjectivenounB2
  /ʌnˈlɛdɪd/Of petrol/gasoline: not containing lead additives.
• unlearn

  verbverb-intransitiveverb-transitiveC1
  /ʌnˈlɜːn/To deliberately forget or discard previously learned knowledge, habits, or behaviours.

Showing 801–820 of 1514 words.