adj. 25B6; adjective
a fierce black mastiff : FEROCIOUS, savage, vicious, aggressive.
fierce competition : AGGRESSIVE, cut-throat, competitive; keen, intense, strong, relentless.
fierce, murderous jealousy : INTENSE, powerful, vehement, passionate, impassioned, fervent, fervid, ardent.
a fierce wind : POWERFUL, strong, violent, forceful; stormy, blustery, gusty, tempestuous.
a fierce pain : SEVERE, extreme, intense, acute, awful, dreadful; excruciating, agonizing, piercing.
gentle, mild.