One who taunts a lot, going around with slander.
A slanderer, a backbiter.
the backbiter who goes about slandering
Defamer, going about with slander
Backbiter/urger , walking gossiper with slander/malice
… knows nobody believes him, therefore he swears every time that he mentions something…
The excessively insulting one, spreader of spite
Backbiter, one who goes about slandering
(The one who is) a slanderer, fault-finder, mischief-monger, (and) who backbites the people to rouse strife
Who is backbiter, one who goes about with slander and evil talk
A slanderer, going about with calumnies