WordRel.com

• marked by extreme intensity of emotions or convictions; inclined to react violently; fervid

  synonym	tearingtrigger-happyvehementviolent
  derivation	fierceness
  similar	intense

• ruthless in competition

  synonym	bowellesscutthroat
  derivation	fierceness
  similar	mercilessunmerciful

• violently agitated and turbulent

  synonym	boisterousrough
  derivation	fierceness
  similar	stormy

• marked by extreme and violent energy

  synonym	ferociousfurioussavage
  derivation	fierceness
  similar	violent