Ferocious

a.

1.

Fierce; savage; wild; indicating cruelty; ravenous; rapacious; as, ferocious look or features; a ferocious lion. The humbled power of a ferocious enemy. - Lowth.

Adj.

1.

ferocious - marked by extreme and violent energy; "a ferocious beating"; "fierce fighting"; "a furious battle" Synonyms: fierce, furious, savage

Draconian, Tartarean, abandoned, aggressive, amok, animal, antagonistic, anthropophagous, atrocious, barbaric, barbarous, battling, beastly, bellicose, belligerent, bellowing, berserk, bestial, bloodthirsty, bloody, bloody-minded, brutal, brutalized, brute, brutish, cannibalistic, carried away, chauvinist, chauvinistic, combative, contentious, cruel, cruel-hearted, delirious, demoniac, demoniacal, destructive, devilish, diabolic, diabolical, distracted, ecstatic, enemy, enraptured, fell, feral, ferine, fiendish, fiendlike, fighting, frantic, frenzied, full of fight, fulminating, furious, grim, haggard, hawkish, hellish, hog-wild, hostile, howling, hysterical, implacable, in a transport, in hysterics, infernal, inhuman, inhumane, inimical, intoxicated, jingo, jingoish, jingoist, jingoistic, kill-crazy, mad, madding, malign, malignant, maniac, martial, merciless, militant, militaristic, military, monstrous, murderous, noncivilized, offensive, orgasmic, orgiastic, pitiless, possessed, predatory, pugnacious, quarrelsome, rabid, raging, ramping, ranting, rapacious, ravening, ravenous, raving, ravished, relentless, roaring, running mad, ruthless, saber-rattling, sadistic, sanguinary, sanguineous, satanic, scrappy, sharkish, slavering, soldierlike, soldierly, storming, subhuman, tameless, transported, trigger-happy, truculent, unchristian, uncivilized, uncontrollable, unfriendly, ungentle, unhuman, unpacific, unpeaceable, unpeaceful, untamed, vicious, violent, voracious, warlike, warmongering, warring, wild-eyed, wild-looking, wolfish