Words That Start With U: A List for Writers, Readers, and English Enthusiasts

Discover a variety of words that start with the letter “U” to enhance your vocabulary and understanding of this unique initial.

  1. Ubiquitous- existing or being everywhere at the same time.
  2. Umbrage- offense or annoyance.
  3. Unanimous- fully in agreement.
  4. Unctuous- exaggeratedly or insincerely polite.
  5. Undulate- move with a smooth wavelike motion.
  6. Umbra- the fully shaded inner region of a shadow.
  7. Unfettered- not confined or restricted.
  8. Ungainly- awkward or clumsy.
  9. Unilateral- performed by or affecting only one side.
  10. Unison- simultaneous performance or utterance of action or speech.
  11. Ubiquitin- a small protein that is found in all eukaryotic cells.
  12. Ultimatum- a final demand or statement of terms.
  13. Umami- a category of taste in food, savory.
  14. Umbilical- relating to or affecting the navel or umbilical cord.
  15. Unabated- without any reduction in intensity or strength.
  16. Unbridled- uncontrolled; unrestrained.
  17. Uncanny- strange or mysterious.
  18. Undaunted- not intimidated or discouraged by difficulty.
  19. Unequivocal- leaving no doubt; unambiguous.
  20. Unfurl- to unfold or be spread out from a rolled or folded state.
  21. Unguent- a soft greasy or viscous substance used as an ointment or for lubrication.
  22. Unkempt- having an untidy or disheveled appearance.
  23. Unruly- disorderly and disruptive.
  24. Unscathed- wholly unharmed.
  25. Untoward- unexpected and inappropriate or inconvenient.
  26. Upbraid- to scold sharply.
  27. Uplift- to lift up; elevate; raise.
  28. Uproarious- characterized by or provoking loud noise or uproar.
  29. Urbane- suave, courteous, and refined in manner.
  30. Urgent- requiring immediate action or attention.
  31. Usurp- take (a position of power) illegally or by force.
  32. Utilitarian- designed to be useful or practical.
  33. Utopia- an imagined perfect place or state of things.
  34. Ubiquinol- an electron-rich (reduced) form of coenzyme Q10.
  35. Ulnar- relating to the ulna or the inner and larger bone of the forearm.
  36. Ulterior- existing beyond what is obvious or admitted.
  37. Ultimate- being the best or most extreme example of its kind.
  38. Umbrageous- shady.
  39. Unattainable- not able to be reached or achieved.
  40. Uncouth- lacking good manners, refinement, or grace.
  41. Undermine- erode the base or foundation of.
  42. Understate- to describe or represent something as being smaller or less important.
  43. Underscore- to underline; to emphasize.
  44. Undertake- commit oneself to and begin.
  45. Uneventful- unmarked by or devoid of any significant or exciting events.
  46. Unfathomable- incapable of being fully explored or understood.
  47. Unhindered- free from restraint or hindrance.
  48. Unilateral- relating to, occurring on, or involving one side only.
  49. Unimpeachable- not able to be doubted, questioned, or criticized.
  50. Unionize- to organize into a labor union.
  51. Unique- being the only one of its kind; unlike anything else.
  52. Unison- simultaneous or harmonious action or agreement.
  53. Unitary- forming a single or uniform entity.
  54. Universal- applicable everywhere or in all cases.
  55. Universe- all existing matter and space considered as a whole.
  56. Unkempt- not combed; untidy.
  57. Unleash- release from a leash or restraint.
  58. Unnerve- make someone lose courage or confidence.
  59. Unprecedented- never done or known before.
  60. Unrelenting- not yielding in strength, severity, or determination.
  61. Unravel- undo twisted, knitted, or woven threads.
  62. Unseen- not seen or noticed.
  63. Unsung- not celebrated or praised.
  64. Untangle- make something tangled or twisted straight.
  65. Untapped- not yet exploited or used.
  66. Untimely- (of an event or action) occurring at an unsuitable time.
  67. Unveil- remove a veil or covering from.
  68. Unwind- relax after a period of work or tension.
  69. Unwieldy- difficult to carry or move because of its size, shape, or weight.
  70. Upbeat- cheerful; optimistic.
  71. Update- make something more modern or up to date.
  72. Upgrade- raise to a higher standard.
  73. Uphold- confirm or support something that has been questioned.
  74. Uplink- a transmission link from the ground to a spacecraft or satellite.
  75. Uproot- pull something, especially a tree or plant, from the ground.
  76. Upscale- relatively expensive and designed to appeal to affluent consumers.
  77. Upshot- the final or eventual outcome or conclusion.
  78. Upstart- a person who has risen suddenly to wealth or power.
  79. Upstream- towards the source of a river or stream.
  80. Urban- relating to a city or town.
  81. Urchin- a small, mischievous young child.
  82. Urethane- a synthetic resin or plastic consisting of a polymer.
  83. Urgency- importance requiring swift action.
  84. Usability- the degree to which something is able or fit to be used.
  85. Usage- the action of using something or the fact of being used.
  86. Useful- able to be used for a practical purpose.
  87. Usher- show or guide someone somewhere.
  88. Usual- habitual or customary.
  89. Usurper- a person who takes a position of power or importance illegally.
  90. Utilize- make practical and effective use of.
  91. Utmost- most extreme; greatest.
  92. Utopian- modeled on or aiming for a state in which everything is perfect.
  93. Utter- complete; absolute.
  94. Utterance- a spoken word, statement, or vocal sound.
  95. Ubiquinone- another term for coenzyme Q10, found in all cells and membranes.
  96. Uralite- a metamorphic rock formed by the alteration of pyroxene to amphibole.
  97. Uranium- a gray, dense radioactive metal used as a fuel in nuclear reactors.
  98. Urchin- a small sea creature with a spiny shell.
  99. Utilitarianism- the doctrine that actions are right if they are useful for the benefit of most.
  100. Uveitis- inflammation of the uvea, the middle layer of the eye.

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