Backbite

v. t.	1.	To wound by clandestine detraction; to censure meanly or spitefully (an absent person); to slander or speak evil of (one absent).
v. i.	1.	To censure or revile the absent. They are arrant knaves, and will backbite. - Shak.

Verb

1.

backbite - say mean things Synonyms: bitch

backbiter, bitch, complain, defamer, kick, kvetch, libeler, maligner, plain, quetch, slanderer, sound off, traducer, vilifier