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Synonyms

fierce

American  
[feers] / fɪərs /

adjective

fiercer, fiercest
  1. menacingly wild, savage, or hostile.

    fierce animals;

    a fierce look.

    Synonyms:
    murderous, bloodthirsty, barbarous, brutal, fell, cruel
    Antonyms:
    mild, tame
  2. violent in force, intensity, etc..

    fierce winds.

    Synonyms:
    passionate, furious, turbulent
  3. furiously eager or intense.

    fierce competition.

    Synonyms:
    turbulent, passionate, furious
  4. extremely bad or severe.

    a fierce cold.


fierce British  
/ fɪəs /

adjective

  1. having a violent and unrestrained nature; savage

    a fierce dog

  2. wild or turbulent in force, action, or intensity

    a fierce storm

  3. vehement, intense, or strong

    fierce competition

  4. informal very disagreeable or unpleasant

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Synonym Usage

Fierce, ferocious, truculent suggest vehemence and violence of temper, manner, or action: fierce in repelling a foe. Ferocious implies fierceness or cruelty, especially of a bloodthirsty kind, in disposition or action: a ferocious glare; ferocious brutality toward helpless refugees. Truculent suggests an intimidating or bullying fierceness of manner or conduct: His truculent attitude kept them terrified and submissive.

Other Word Forms

Derived Forms

Etymology

Origin of fierce

First recorded in 1300–1350; from Middle English fiers, fers, from Old French fiers, fers, from Latin ferus “wild, fierce”; cf. feral 1, ferocious

Explanation

Fierce is ferocious and forceful, like a lion. When you are fierce, opponents fear you. Despite their loss, the talented JV team put up a fierce fight against the varsity squad. Fierce comes from the Latin ferus 'wild animal.' It means strong, proud, dangerous and ready to roar. Fierce can also be used to mean intense. The family was known for their fierce pride. If you have a fierce work ethic, you don't rest until you finish the job. And a fierce storm can really devastate a community.

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Vocabulary lists containing fierce

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In 2015 Coke acquired a stake in Monster, a fierce competitor of Red Bull, and McDonald’s tested Monster in a handful of U.S. restaurants.

From The Wall Street Journal • Jun. 13, 2026

She jokes and smiles, but that should never be confused with anything but fierce determination.

From BBC • Jun. 12, 2026

Ireland may not have the global name recognition of China or the U.S.—two rivals locked into a fierce battle for market dominance—but quantum companies themselves are increasingly eyeing the country as a strategic launchpad.

From Barron's • Jun. 12, 2026

Saba Capital, and the fierce debate it ignited between Barrett and Jackson.

From Slate • Jun. 11, 2026

“Well, he’s right about one thing. He’s got a Hell of a personality. But I’m not so sure he’s fierce enough for that name.”

From "Summer of the Mariposas" by Guadalupe García McCall

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