fiercely is a form of:

Fierce



adjective
1.
យ៉ាងខ្លាំងសាហាវ
ENGLISH MEANING
adjective
1.
Furious; violent; unrestrained; impetuous; as, a fierce wind.
2.
Vehement in anger or cruelty; ready or eager to kill or injure; of a nature to inspire terror; ferocious.
3.
Excessively earnest, eager, or ardent.