0 a person who slanders someone (= damages their reputation by making a false spoken statement about them):
The slanderer would be free to leave court and slander again if he likes.
She shows her anger towards him, referring to him as a “contemptible slanderer.”
Knowing that the accusations were untrue, he did not consider it necessary to respond to his slanderer.
In many detainees' view, men who confessed were slanderers.
Yet that is the last thing slanderers would utter.
I do not think that even the most malignant slanderer of birds has ever had a word to say against the beneficent activities of the lapwing.
And the subordinates and subalterns will be there to rebuke their slanderers and traducers.
Even so must their wives be grave, not slanderers, sober, faithful in all things.