Reference: Evil-speaking
Easton
is expressly forbidden (Tit 3:2; Jas 4:11), and severe punishments are denounced against it (1Co 5:11; 6:10). It is spoken of also with abhorrence (Ps 15:3; Pr 18:6-7), and is foreign to the whole Christian character and the example of Christ.
See Verses Found in Dictionary
who does not slander with his tongue, who does not harm his friend or discredit his neighbor,
A fool's lips lead to strife, and his mouth provokes a beating. A fool's mouth is his devastation, and his lips are a trap for his life.
But now I am writing you not to associate with anyone who bears the name of brother who is sexually immoral or greedy, an idolater or a reviler, a drunkard or a swindler. Do not even eat with such a person.
thieves, greedy people, drunkards, revilers, or swindlers will inherit God's kingdom.
to slander no one, to avoid fighting, and to be kind, always showing gentleness to all people.
Don't criticize one another, brothers. He who criticizes a brother or judges his brother criticizes the law and judges the law. But if you judge the law, you are not a doer of the law but a judge.