V

vainglory - noun outspoken conceit
vendetta - noun a feud in which members of the opposing parties murder each other
vestige - noun an indication that something has been present
vicissitude - noun mutability in life or nature (especially successive alternation from one condition to another); a variation in circumstances or fortune at different times in your life or in the development of something
vitiate - verb take away the legal force of or render ineffective; make imperfect; corrupt morally or by intemperance or sensuality
volition - noun the act of making a choice; the capability of conscious choice and decision and intention
volte-face - noun a major change in attitude or principle or point of view