Initial U

• ugly: offensive to the sight; contrary to beauty; disagreeable aspect; unsightly ultimate: final; being the last or concluding; fundamental; elemental; extreme ultimately: as final consequence; at last; in the end
• ultrasonic: supersonic; higher in frequency than the range of sound perceptible to the human ear ultraviolet: wave lengths shorter than light but longer than X rays
• unanimous: uniform; in complete agreement
• unbearable: unendurable; so unpleasant, distasteful, or painful as to be intolerable
• unconscious: lacking awareness; senseless; unaware
• uncover: remove the cover from; expose; disclose
• underestimate: make too low an estimate of the quantity; undervalue
• undergo: experience; suffer; pass through
• undergraduate: university student who has not yet received a first degree
• underground: under the level of the ground; buried
• underline: mark a line below, as words; underscore.
• underlying: lying under or beneath something; basic; implicit; taking precedence; prior
• undermine: weaken by wearing away base or foundation; injure or impair; dig a mine or tunnel beneath
• underneath: under or below an object or a surface; lower down on the page
• undertake: take on; embark on; assume
• undertaking: task or assignment undertaken; career
• undo: release; cause the ruin or downfall of; cancel or reverse an action
• undoubtedly: unquestionably; without doubt; certainly
• undue: not due; not yet owing; not just, proper, or legal; ; excessive
• uneasy: not easy; difficult; restless; disturbed by pain, anxiety
• unfair: unjust; contrary to laws or conventions, especially in commerce
• unfold: extend or stretch out to a greater or the full length; happen
• unfortunately: unluckily; by bad luck
• uniform: consistent; standardized; clothing of a particular group
• unique: without an equal; being the only one of its kind
• unity: cohesion; harmony; quality of being united into one
• universal: affecting all; general; present everywhere; relating to the entire world or all within the world; worldwide
• universe: cosmos; everything that exists anywhere
• unlikely: improbable; has little chance of being the case or coming about
• unload: take something off a container
• unprecedented: having no previous example; novel; unparalleled
• unsatisfactory: not giving satisfaction; inadequate
• unstable: inconstant; variable; lacking control of one’s emotions; constantly changing
• unwarranted: having no justification; groundless; not guaranteed to be good, sound, or of a certain quality
• uphold: support; preserve; hold aloft; raise
• upright: in an erect position or posture; perpendicular; vertical, or nearly vertical; pointing upward
• upset: concerned by anxious uneasiness or trouble or grief
• urban: metropolitan; of, relating to, or located in a city
• urge: force in an indicated direction; stimulate; excite
• urgent: pressing; compelling immediate action or attention
• utensil: instrument, implement, or container for practical use, especially in kitchen or laboratory
• utility: something useful; public service
• utilization: state of having been made use of; the act of using
• utilize: put into service; take advantage of
• utmost: farthest point or extremity; most distant; extreme
• utter: speak; express; send forth with the voice
• utterance: vocal expression; power of speaking; last or utmost extremity