- unfeeling
- undoable
- uncut
- unconsumed
- unexpended
- undischarged
- unbowed
- upkeep
- untrue
- unwritten
- unit
- unearth
- unveil
- unfold
- unplaced
- undulatory
- undermine
- unprincipled
- unworried
- unthought
- unhoped for
- untouchable
- unpractised
- unversed
- unpracticed
- uncoordinated
- unthankful
- undeniable
- unshakable
- unbodied
- unbroken
- unburden
- uncanny
- uncertain
- unchanged
- uncolored
- unsecured
- unconscious
- uncontrollable
- unconventional
- unmanageable
- ungovernable
- usage
- urge
- urgency
- uproot
- upstage
- upstairs
- useful
- unenforceable