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Definitions

ferocious

[fuh-roh-shuhs] / fəˈroʊ ʃəs /
ADJECTIVE
violent, barbaric
Synonyms
STRONGEST
brutal brutish cruel fierce frightful merciless murderous ravenous relentless ruthless savage vehement vicious voracious
WEAK
barbarous bloodthirsty fell feral grim implacable inhuman inhumane lupine pitiless predatory rapacious ravening sanguinary tigerish truculent unmerciful unrestrained untamed wild wolfish
Antonyms
STRONGEST
calm compassionate considerate gentle giving kind merciful nice pleasant satisfied sympathetic tame
WEAK
innocent mild nonviolent tender

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.

Clarke also dismissed the $29-million lawsuit, which arose from a ferocious dispute among the sibling heirs to an Oregon winery fortune, with prejudice, so it can’t be refiled.

From Los Angeles Times • Mar. 27, 2026

Gyllenhaal zips between tones and styles with a ferocious abandon.

From Salon • Mar. 8, 2026

A ferocious turning of the screw against a shell-shocked team.

From BBC • Mar. 7, 2026

“We have never seen a demand cycle like what we are experiencing now in the AI/datacenter infrastructure space,” wrote JPMorgan analyst Stephen Tusa, calling the current environment the “most ferocious we have ever seen.”

From Barron's • Mar. 2, 2026

But Oscar wasn’t large enough or ferocious enough to kill a deer.

From "The Wild Robot Escapes" by Peter Brown

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.