v.tr. To speak spitefully or slanderously about (another).

What is the meaning of backbiters?

: to say mean or spiteful things about a person (such as someone who is not present) They beguiled the time by backbiting and intriguing against each other in a foolish kind of way.— Jack London.

What do you call someone who Backbites?

▲ The action of slandering a person without that person's knowledge. scandalmongering. abuse. calumny.