U字母开头的单词或词组(第3页)：
- unanimity
- unattended
- unblemished
- unfettered
- unruly
- unveil
- upbringing
- uproot
- urbane
- undervalue
- UN
- unfavourable
- untenable
- unconditioned
- undersigned
- unclean
- undermentioned
- unfairly
- unplug
- under no circumstances
- under fire
- under the weather
- up against
- up in the air
- up to scratch
- up to the minute
- user
- utilise
- ultimately
- uniformly
- universally
- unstable
- unlock
- unnatural
- unparalleled
- unreasonable
- unsatisfactory
- unsuccessful
- unsuitable
- untie
- unyielding
- unworthy
- uplift
- upside