- Crazed
- Crazy
- Fanatical
- Feral
- Frothing at the mouth
- Mad (dog)
- Mad like a dog or a bird, perhaps
- Barbarian
- Feral
- Frantic
- Undomesticated
- Untamed
- Way out
- Living in a state of nature; inhabiting natural haunts,
as the forest or open field; not familiar with, or not easily
approached by, man; not tamed or domesticated; as, a wild boar; a wild
ox; a wild cat.
- Barbarian
- Barbaric
- Criticise brutally
- Cruel and vicious
- Cruel, vicious
- Feral
- Uncivilised
- Feral horse
- Small American feral horse
- Wild horse
- Wild horse found in isthmus tangle
- Wild horse; WWII fighter plane
- Wild Mexican horse
- The half-wild horse of the plains in Mexico, California,
etc. It is small, hardy, and easily sustained.