A person who is not socialized WordNet 3.0 & Open English WordNet

The wild man, wild man of the woods, or woodwose/wodewose is a mythical figure and motif that appears in the art and literature of medieval Europe, comparable to the satyr or faun type in classical mythology and to Silvanus, the Roman god of the woodlands. Wikipedia

Figure of medieval European art, literature and folklore. Wikipedia Disambiguation

Mythical figure common in western European legend Wikidata

A primitive man who dwells outside of civilized society; a savage person without culture. Wiktionary