ETYM back, n . + bite.
To say mean things; SYN. bitch.
To smirch or soil; to discolor; to obscure. Hence: To dishonor; to sully.
To make or become black; SYN. melanize, nigrify, black.
To expose while ridiculing; esp. of pretentious or false claims and ideas; SYN. expose.
To cry down; to censure as faulty, mean, or worthless; to clamor against; to blame clamorously; to discredit; to disparage.
ETYM Latin denigrare; de- + nigrare to blacken, niger black.
To blacken thoroughly; to insult.
1. To spread negative information about; SYN. revile, vituperate, rail.
2. Slander; degrade.