Ultraviolet
Meaning: beyond the violet end of the light spectrum and not visible to the human eye
Sentence: Ultraviolet rays can be very harmful for our skin.
Umbrella
Meaning: a circular piece of material stretched over a folding frame with a central stick which you open to protect yourself from rain or sun
Sentence: The umbrella kept him dry in the rain.
Unaccountable
Meaning: unable to be explained
Sentence: For some unaccountable reason, I completely forgot to do my homework.
Unanimous
Meaning: with everyone in agreement
Sentence: They reached a unanimous decision to go to the beach.
Unavoidable
Meaning: not able to be avoided
Sentence: Unavoidable circumstances led to the accident.
Unbearable
Meaning: not able to be endured
Sentence: Mehr?s skin rash worsened because of the unbearable heat.
Unbelievable
Meaning: not able to be believed
Sentence: She gave us an unbelievable excuse for being late.
Unconscious
Meaning: not conscious; not aware of things
Sentence: They ran towards the unconscious man.
Unicorn
Meaning: (in legends) an animal that is like a horse with one long, straight, horn growing from its forehead
Uninhabitable
Meaning: unfit to live in
Sentence: They were stuck on an uninhabitable island for weeks.
Universal
Meaning: to do with or including or done by everyone or everything
Sentence: English is fast becoming a universal language.
Unreasonable
Meaning: going beyond the limits of what is reasonable
Sentence: The greedy child made unreasonable demands.
Unsatisfactory
Meaning: not good enough
Sentence: He went back to the shop to return all the unsatisfactory goods.
Unscrupulous
Meaning: without scruples; unprincipled
Sentence: His unscrupulous behaviour is shocking.
Untimely
Meaning: occurring before the expected, normal, or proper time We were not prepared for the untimely arrival of our guests.
Unveil
Meaning: to remove a veil or covering from something
Sentence: The bride did not want to unveil during the wedding ceremony.
Upheaval
Meaning: a sudden change or disturbance
Sentence: Moving to a new house causes an upheaval.
Utensil
Meaning: a tool, device, or container, especially one for use in the house
Sentence: Which utensil will you use to turn the pancakes?
Under age
Meaning: not legally old enough to do a particular thing
Sentence: It is illegal to sell cigarettes to children who are under age.
Unduly
Meaning: more than is necessary, acceptable, or reasonable
Sentence: The new finance minister must strengthen the SBP so that there is no perception of unduly intervention of the finance ministry in the SBP’s roles.
Synonyms: excessively, immoderately, intemperately, disproportionately, out of all, proportion, inordinately, superfluously, too, overly, overmuch, unnecessarily
Antonyms: duly, appropriately
Unabashed
Meaning: without any worry about possible criticism or embarrassment
Sentence: She is to this day unabashed in her patriotism.
Synonyms: blatant, brazen, cheeky
Antonyms: N/A
UBIQUITOUS
Meaning: present, appearing, or found everywhere.
UNCONSCIONABLE
Meaning: not right or reasonable.
UNCTUOUS
Meaning: excessively flattering or ingratiating; oily.
UNIFORM
Meaning: remaining the same in all cases and at all times; unchanging in form or character.
UNREMITTING
Meaning: never relaxing or slackening; incessant.
UNWITTING
Meaning: (of a person) not aware of the full facts.
URBANE
Meaning: courteous and refined in manner (typically used of a man).
USURP
Meaning: take (a position of power or importance) illegally or by force.
UTILITARIAN
Meaning: designed to be useful or practical rather than attractive.
UTOPIA
Meaning: an imagined place or state of things in which everything is perfect.
Usurious
Meaning: (yoo-ZHOOR-ee-us), relating to or characterized by usury; extortionate.
Synonyms: extorting, mean, penny-pinching, acquisitive
Antonyms: generous, unselfish