U字母开头的单词或词组(第9页)：

• unobtrusive
• unpalatable
• unprecedented
• unprepossessing
• unpremeditated
• unproductive
• unqualified
• unravel
• unpretentious
• unprincipled
• unprovoked
• unregenerate
• unregulated
• untapped
• unremitting
• unrepentant
• unrequited
• unreserved
• unscathed
• unscented
• unscrupulous
• unscrupulousness
• unseemly
• unsettling
• unsettle
• unsound
• unspoiled
• unspotted
• untold
• untoward
• upgrade
• untutored
• unwarranted
• unwieldy
• unwitting
• unwonted
• Utopia
• unworldly
• upbraid
• Utopian
• upheaval
• uphold
• upright
• upstage