ferocious
adj.very violent, aggressive, or strong. You use it to describe a wild animal or a person's intense behavior.
adj.marked by extreme violence, cruelty, or intensity. Often describes predatory behavior or powerful natural forces.
“The ferocious dog barked at every stranger.”
“A ferocious storm hit the coast last night, causing significant damage to the harbor.”
“The debate grew ferocious as both sides refused to compromise on their core principles, leading to a complete breakdown in communication.”
Often used to modify nouns related to conflict, weather, or predatory animals.
“When an animal is dying, it becomes its most ferocious.”
Taken from Latin ferōx (“wild, bold, savage, fierce”) + -ous.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.