1. existing in a wild state, especially after escaping from captivity or domestication
2. having a savage, fierce, or uncontrolled character

Examples

• The feral cats living in the alley avoided all human contact.
• A pack of feral dogs roamed the abandoned neighborhood.
• The once-domestic rabbits had become completely feral after generations in the wild.
• His feral grin made everyone in the room uncomfortable.
• The child’s feral behavior shocked the teachers at the school.
• Feral pigs have become a serious problem for farmers in the region.