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

As Juneteenth has gained mainstream recognition as a federal holiday, Chef Caldwell remains fiercely protective of its true roots. —La'tasha Givens, CBS News, 20 June 2026

That case is still unsolved, but suspicion settled almost immediately on McCall, whom the Moores had criticized fiercely after the shooting. —Orlando Sentinel Editorial Board, The Orlando Sentinel, 19 June 2026

Critically, Tehran must contend with hardliners firmly entrenched within the regime, including influential figures who have fiercely opposed the terms of the current agreement with Washington and have previously attempted to sabotage diplomacy to push for war. —Mostafa Salem, CNN Money, 18 June 2026

Guns are both pervasive and fiercely defended in Missouri, where political ads are often awash in firearms. —Kacen Bayless, Kansas City Star, 17 June 2026

Word History

First Known Use

14th century, in the meaning defined at sense 1