fiercest
adjective
Definitions
Exceedingly violent, severe, ferocious, cruel or savage.
Example: A fierce storm battered the coast.
Resolute or strenuously active.
Example: We made a fierce attempt to escape.
Threatening in appearance or demeanor.
Example: The lion gave a fierce roar.
(rural) Excellent, very good.
Example: Q: "How was the party last night?" A: "Fierce!"