To vituperate is to speak or write in an extremely negative way about someone.

Just as vituperation consists of negative, explosive, malicious outbursts, to vituperate is to communicate in this way. Negative political ads vituperate against opponents. When you insult someone and swear at them, you vituperate. People with a short temper tend to vituperate often — it's similar to railing, vilifying, and reviling. The root word is the Latin vituperationem, "blame or censuring," from vitium, "fault or defect."

Definitions of vituperate

v spread negative information about

rail, revile, vilify
Type of:
abuse, blackguard, clapperclaw, shout
use foul or abusive language towards

v censure severely or angrily

bawl out, berate, call down, call on the carpet, chew out, chew up, chide, dress down, have words, jaw, lambast, lambaste, lecture, rag, rebuke, remonstrate, reprimand, reproof, scold, take to task, trounce
castigate, chasten, chastise, correct, objurgate
censure severely
brush down, tell off
criticize harshly, usually via an electronic medium
Type of:
criticise, criticize, knock, pick apart
find fault with; express criticism of; point out real or perceived flaws