- utter
- upward
- urge
- ultimate
- uncertain
- uncertainty
- unfit
- underestimate
- unlike
- unlikely
- untie
- under way
- ultraviolet
- underline
- underlying
- undermine
- undertake
- undergo
- uncover
- upside-down
- uproar
- utmost
- upright
- upset
- used
- use
- utility
- utilization
- utilize
- unfold
- urban
- unsuitable
- universal
- upgrade
- unload
- unanimous
- unfortunate
- undo
- unite
- unity
- union
- uniform
- unify
- urgent
- uphold
大学英语专业四级单词单词大全〔U 〕课程包含45个英语单词词汇。