Furious; violent; unrestrained; impetuous; as, a fierce wind.

Vehement in anger or cruelty; ready or eager to kill or injure; of a nature to inspire terror; ferocious.

Excessively earnest, eager, or ardent.

marked by extreme and violent energy; "a ferocious beating"; "fierce fighting"; "a furious battle"

violently agitated and turbulent; "boisterous winds and waves"; "the fierce thunders roar me their music"- Ezra Pound; "rough weather"; "rough seas"