What is another word for viscious?

Here are some words that can be used as synonyms for "vicious," depending on the specific context:

General synonyms:

* Cruel

* Brutal

* Savage

* Fierce

* Malicious

* Hateful

* spiteful

* malevolent

* wicked

* ruthless

More specific synonyms:

* For behavior: ferocious, aggressive, violent, relentless, unrelenting,

* For personality: bitter, spiteful, vindictive, venomous,

* For words: scathing, biting, cutting, venomous,

* For a circle: a vicious cycle

The best synonym will depend on the specific meaning you want to convey.