fierce

adjective

ˈfirs 

fiercer; fiercest

1

a

: violently hostile or aggressive in temperament

a fierce tiger

b

: given to fighting or killing : pugnacious

fierce fighters

2

a

: marked by unrestrained zeal or vehemence

a fierce argument

b

: extremely vexatious, disappointing, or intense

fierce pain

3

: furiously active or determined

make a fierce effort

4

: wild or menacing in appearance

5

informal : having or expressing bold confidence or style

When it comes to celebrity fashion, while the looks are fierce they're not always attainable.

—Marlen Komar

fierceness noun

Synonyms

• fell
• ferocious
• grim
• savage
• vicious

Choose the Right Synonym for fierce

fierce, ferocious, barbarous, savage, cruel mean showing fury or malignity in looks or actions.

fierce applies to humans and animals that inspire terror because of their wild and menacing aspect or fury in attack.

fierce warriors

ferocious implies extreme fierceness and unrestrained violence and brutality.

a ferocious dog

barbarous implies a ferocity or mercilessness regarded as unworthy of civilized people.

barbarous treatment of prisoners

savage implies the absence of inhibitions restraining civilized people filled with rage, lust, or other violent passion.

a savage criminal

cruel implies indifference to suffering and even positive pleasure in inflicting it.

the cruel jokes of schoolboys

Examples of fierce in a Sentence

He was killed in a fierce battle.

The proposal has faced fierce opposition.

The two teams have had a fierce rivalry for many years.

He's admired for his fierce independence.

You could see the fierce determination in her eyes.

Recent Examples on the Web

The Battle of Okinawa lasted 82 days, with fierce fighting on land and sea. —CBS News, 11 Apr. 2025

The documentary follows the story of Ángel, a charismatic boy with fierce love for his Guarani roots and a vision for his Paraguayan hometown of Nanawa. —Lise Pedersen, Variety, 11 Apr. 2025

This paradox lies at the heart of Level 5 leadership, a concept popularized by Jim Collins, which emphasizes the combination of humility and fierce resolve. —Wayne Yu, Forbes.com, 10 Apr. 2025

China is fierce competition in the EV space and a trade war could give them a lead that leaves the U.S in the dust. —Charles Singh, USA Today, 9 Apr. 2025

Word History

Etymology

Middle English fiers, from Anglo-French fer, fers, fiers, from Latin ferus wild, savage; akin to Greek thēr wild animal

First Known Use

14th century, in the meaning defined at sense 1a

Phrases Containing fierce

• something fierce

Rhymes for fierce

• tierce

Kids Definition

fierce

adjective

ˈfi(ə)rs 

fiercer; fiercest

1

a

: violently unfriendly or aggressive in disposition

b

: eager to fight or kill

2

: expressed with extreme force or anger : intense

a fierce argument

3

: furiously active or determined

a fierce effort

4

: wild or threatening in appearance

fiercely adverb

fierceness noun