Verses with the word slander in the Apocrypha (4 verses):

Sirach 19:15
Admonish a friend: for many times it is a slander, and believe not every tale.

Sirach 26:5
There be three things that mine heart feareth; and for the fourth I was sore afraid: the slander of a city, the gathering together of an unruly multitude, and a false accusation: all these are worse than death.

Sirach 27:23
When thou art present, he will speak sweetly, and will admire thy words: but at the last he will writhe his mouth, and slander thy sayings.

1 Maccabees 11:11
Thus did he slander him, because he was desirous of his kingdom.