HackerVoca

: encounter, battle, fight, conflict, combat, collision
slack : loose, relaxed
slander : defame, scandalize, vilify /'/ verb [transitive]
formal to say bad things about someone, especially things that are not true, in order to influence other people against them
vilification /" / noun [countable]: his vilification by the popular press

slaughter : butcher, massacre, murder, slay, kill
slavery : bondage, servitude / / noun [uncountable]
the condition of being a slave or being forced to obey someone else: The legislation of 1781 abolished penal servitude in Bohemia.