Wild or untamed

• Not cultivated or domesticated

Fierce, violent, or merciless

• Harsh or severe, as of criticism or attack

Informal: impressively bold or brutally honest

• Informal: extremely cool or admirable

A fierce or brutal person

• A wild and ferocious animal

Dated, offensive: a person considered uncivilized

To attack or maul fiercely

• To criticize harshly