fiercely

adverb

fierce·​ly ˈfirs-lē 

1

: in a fierce or vehement manner

fiercely competitive

2

: to a high degree : very

fiercely expensive

Synonyms of fiercely

• extremely
• very
• incredibly
• terribly
• highly
• too
• desperately
• intensely
• damned
• so
• badly
• damn
• severely
• really
• wildly
• seriously
• heavily
• far
• most
• greatly

Examples of fiercely in a Sentence

fiercely hot weather

Recent Examples on the Web

Despite his age, Messi is still blessed with breathtaking skill, and is also fiercely competitive, even at training. — Michelle Kaufman, Miami Herald, 2 July 2026

Today, more than 140 companies, most of which compete fiercely with one another, agreed to back the same stablecoin. — Christian Catalini, Forbes.com, 30 June 2026

Still, that doesn’t mean Swift, who’s fiercely protective of her intellectual property rights, won’t try to protect her name. — Winston Cho, HollywoodReporter, 2 July 2026

Collectors are still willing to compete fiercely for exceptional Old Masters. — Daniel Cassady, ARTnews.com, 1 July 2026

Word History

First Known Use

14th century, in the meaning defined at sense 1