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

While Patel is fiercely loyal to Trump, his message Saturday was a rebuke to Musk, who has had the ear of the president since the 2024 campaign. —Bart Jansen, USA TODAY, 25 Feb. 2025

Firefly exemplifies how innovation and responsibility can coexist, even in a fiercely competitive and rapidly evolving market. —Alexander Puutio, Forbes, 22 Feb. 2025

In Aries, the love planet is fiercely independent and unapologetic in its pursuits. —Valerie Mesa, People.com, 20 Feb. 2025

The race in New York’s 17th District, just north of the city, promises to be among the most fiercely and expensively contested in the country in the 2026 midterms. —Nicholas Fandos, New York Times, 18 Feb. 2025

Word History

First Known Use

14th century, in the meaning defined at sense 1