pure; untouched by corruption or imperfection; above reproach: He tries to pass himself off as some sort of lily-white saint, but he's not.
designating or pertaining to any faction, organization, or group opposing the inclusion of blacks, esp. in political or social life.
—n.
a member of a lily-white organization, esp. a member of a former faction of the Republican party in the South opposed to the inclusion of blacks in the party or in political life in general.