This noun describes the act of speaking against others maliciously, tearing down reputations through words. Paul fears finding 'slander (καταλαλιάς)' among the Corinthian vices when he visits (2 Corinthians 12:20), listing it alongside quarreling, jealousy, and disorder. Peter exhorts believers to 'put away all malice and all deceit and hypocrisy and envy and all slander (καταλαλιάς)' (1 Peter 2:1), treating it as incompatible with spiritual growth. The term targets the destructive power of the tongue, the way words can wound and divide communities. Both apostles call the church to speech that builds up rather than tears down.