IPA: /ˈvɪʃəsli/
KK: /ˈvɪʃəsli/
In a cruel or violent way, often with the intention to harm or hurt someone.
The dog barked viciously at the stranger approaching the house.
Viciously → It is formed from "vicious" (from Latin "viciosus", meaning full of faults or defects) and the suffix "-ly" (meaning in a manner of). The word "viciously" means in a manner that is full of faults or characterized by vice.
Think of 'vicious' meaning full of faults or bad qualities, and remember that 'viciously' describes doing something in a bad or harmful way.