uber :above everything else
ubiquitous/ubiquity a/n:existing or being everywhere; simultaneously
umbrage n :resentment; offense; suspicion; doubt; shade by foliage
unitary a :undivided/whole; characterized by units/unity
urbane a :possessing worldliness/sophistication/refinement; polished
usufruct n :legal right to use fruits/profits of anothers
usurpation n :seize possession w/out legal right, encroach
utopia n :place/state/political/social of perfection