- menacingly wild, savage, or hostile: fierce animals; a fierce look.
- violent in force, intensity, etc.: fierce winds.
- furiously eager or intense: fierce competition.
- Informal. extremely bad or severe: a fierce cold.
Origin of fierce
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for fiercest
Even its fiercest detractors admit that WWP has the right motives, even if they believe WWP can be a lot more effective.Wounded Warrior Project Under Fire
September 26, 2014
Sharks are normally considered to be the fiercest fish in the water.Shark-Eating Monsters, the Kid Emmys, and More Viral Videos
The Daily Beast Video
August 24, 2014
The Peshmerga have long been considered the fiercest fighting force in the region.Obama’s Iraq Plan Has a Killer Flaw—and Airstrikes Alone May Not Save It
August 8, 2014
They left a week ago, after the Ukrainian Army began the latest and fiercest episode of its “Anti-Terrorist Operation.”Ukraine Families Flee Into the Forest to Escape Brutal Fighting in Sloviansk
June 10, 2014
The religious basis of the fiercest opposition to same-sex marriage is a truism.Opposing Gay Marriage Doesn’t Make You a Crypto-Racist
April 24, 2014
At this hour of fiercest sun the whole world slept with him.The Leopard Woman
Stewart Edward White
The failure of the attempt was followed by the fiercest paroxysms.Alice, or The Mysteries, Complete
A sight which roused in him afresh—on the instant—all his fiercest animosities.The Coryston Family
Mrs. Humphry Ward
Spent with struggle, stumbled the warrior, fiercest of fighting-men, fell adown.Beowulf
He always, however, kept his fiercest animosity for the Rougons.The Fortune of the Rougons
- having a violent and unrestrained nature; savagea fierce dog
- wild or turbulent in force, action, or intensitya fierce storm
- vehement, intense, or strongfierce competition
- informal very disagreeable or unpleasant
Word Origin and History for fiercest
mid-13c., "proud, noble, bold," from Old French fers, nominative form of fer, fier "strong, overwhelming, violent, fierce, wild; proud, mighty, great, impressive" (Modern French fier "proud, haughty"), from Latin ferus "wild, untamed," from PIE root *ghwer- "wild, wild animal" (cf. Greek ther, Old Church Slavonic zveri, Lithuanian zveris "wild beast").
Original English sense of "brave, proud" died out 16c., but caused the word at first to be commonly used as an epithet, which accounts for the rare instance of a French word entering English in the nominative case. Meaning "ferocious, wild, savage" is from c.1300. Related: Fiercely; fierceness.