fiercely

adverb

fierce·​ly ˈfirs-lē 

1

: in a fierce or vehement manner

fiercely competitive

2

: to a high degree : very

fiercely expensive

Synonyms

• achingly
• almighty
• archly
• awful
• awfully
• badly
• beastly
• blisteringly
• bone
• colossally
• corking
• cracking
• damn
• damned
• dang
• deadly
• desperately
• eminently
• enormously
• especially
• ever
• exceedingly
• exceeding
• extra
• extremely
• fabulously
• fantastically
• far
• filthy
• frightfully
• full
• greatly
• heavily
• highly
• hugely
• immensely
• incredibly
• intensely
• jolly
• majorly
• mightily
• mighty
• monstrous [chiefly dialect]
• mortally
• most
• much
• particularly
• passing
• rattling
• real
• really
• right
• roaring
• roaringly
• seriously
• severely
• so
• sore
• sorely
• spanking
• specially
• stinking
• such
• super
• supremely
• surpassingly
• terribly
• that
• thumping
• too
• unco
• uncommonly
• vastly
• very
• vitally
• way
• whacking
• wicked
• wildly

Examples of fiercely in a Sentence

fiercely hot weather

Recent Examples on the Web

And after years of fiercely protecting her private life (and facing incredible scrutiny from the tabloids, who analyzed every move of the Girls girls), Williams is feeling more open to sharing more of herself with the world. —Stephanie McNeal, Glamour, 26 June 2025

Brands—especially those in the fiercely competitive e-commerce environment—need to think outside the box to stand out. —Expert Panel®, Forbes.com, 25 June 2025

His soul fretted in the shadow of his oppressor’s language, but the fiercely patriotic Irish nationalist—the citizen—is no hero either. —Benjamin Hale june 23, Literary Hub, 23 June 2025

Thandiwe is protective of Nico As someone who navigated the challenges of being a young actress in Hollywood herself, Thandiwe is fiercely protective of Nico. —Kelsey Lentz, People.com, 14 June 2025

Word History

First Known Use

14th century, in the meaning defined at sense 1