Strong G2635 καταλαλέω katalaleō · to slander

1 Peter

1. 1 Peter 2:12
   Having your conversation honest among the Gentiles: that, whereas they speak against you as evildoers, they may by your good works, which they shall behold, glorify God in the day of visitation.
2. 1 Peter 3:16
   Having a good conscience; that, whereas they speak evil of you, as of evildoers, they may be ashamed that falsely accuse your good conversation in Christ.