KEY: Capital.
SYN: Chief, excellent, important, cardinal, principal, consummate,high.
ANT: Inferior, unimportant, subordinate, minor, defective, mean.

• Unsettle
• Unskillful, [See SETTLE]
• Unsophisticated, SIMPLE_==_key:, Unsound, SOUND_==_key:,
• Unsteady
• Unsuccessful
• Untrodden
• Untruth
• Unusual
• Unwearied
• Unwilling
• Unyielding
• Upbraid
• Uphold
• Upright
• Uproar, [See FLEXIBLE_and_OBSTINATE]
• Uproot
• Upset
• Upshot
• Upstart
• Urbane
• Urbanity
• Urge
• Urgent
• Useful
• Useless, [See CUSTOM]