ferocious

adjective

fe·​ro·​cious fə-ˈrō-shəs 

1

: exhibiting or given to extreme fierceness and unrestrained violence and brutality

a ferocious predator

the ferocious butchery of women and children

2

: extremely intense

ferocious heat

The competition among the students was ferocious.

ferociously adverb

ferociousness noun

Synonyms of ferocious

• intense
• fierce
• intensive
• terrible
• furious
• deep

Choose the Right Synonym for ferocious

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 ferocious in a Sentence

A ferocious wind swept the beach.

The competition among the students was ferocious.

Recent Examples on the Web

Ukrainian troops pushed back a ferocious Russian offensive last fall, and their cities survived a frigid winter despite a Russian blitz on energy infrastructure. —The Week Us, TheWeek, 4 May 2026

This led to the number of firefighters being reduced, which diminished their preparedness and mishandled emergency responses to large-scale emergencies related to ferocious fire. —Teresa Liu, Daily News, 4 May 2026

Addressing such concerns is very different from the familiar parallel in public policy debates over how AI raises such concerns for protecting privacy and intellectual property in the age of spiraling entrepreneurial opportunities and ferocious global competition. —Jeffrey Sonnenfeld, Fortune, 2 May 2026

Behind a ferocious defense and an offense that couldn’t miss, the Knicks led by 25 points after one quarter, by as many as 51 points in the first half, and by as many as 61 points after halftime. —Peter Sblendorio, New York Daily News, 1 May 2026

Word History

Etymology

Latin feroc-, ferox, literally, fierce looking, from ferus + -oc-, -ox (akin to Greek ōps eye) — more at eye

First Known Use

1646, in the meaning defined at sense 1

Rhymes for ferocious

• atrocious
• precocious

Kids Definition

ferocious

adjective

fe·​ro·​cious fə-ˈrō-shəs 

1

: fierce sense 1, savage

2

: very great : extreme

ferocious heat

ferociously adverb

ferociousness noun

ferocity

fə-ˈräs-ət-ē

noun