wild

wild untamed, savage.
wild blue yonder the far distance, a remote place; from R. Crawford Army Air Corps (song, 1939).
Wild Children a term used to describe children who in different places and at different periods have been discovered apparently living independently in the wild, and perhaps reared or nurtured by animals; Peter the Wild Boy (see Peter2) is one historical example. Although there are a number of well-documented cases of such discoveries, how the children concerned reached the state in which they were found remains a matter of conjecture; it has been suggested that in a number of cases the child had in fact been abandoned comparatively recently by its parents.

Children reared in the wild by animals (especially wolves) have a long fictional history, from Romulus and Remus of Roman mythology, to Mowgli and Tarzan in the 19th and 20th centuries.
wild geese a name for the Irish Jacobites who emigrated to the Continent after the defeat of James II, especially after the Treaty of Limerick in 1691 (see Treaty Stone). The name is first found in a verse by Michael Joseph Barry (1817–89).
wild goose chase a foolish and hopeless search for or pursuit of something unattainable; originally, a kind of horse-race or sport in which all competitors had to follow accurately the course of the leader (at a definite interval), like a flight of wild geese.
Wild Huntsman a phantom huntsman of Teutonic legend, fabled to ride at night through the fields and woods with shouts and baying of hounds.
Wild West the western US in a time of lawlessness in its early history. The Wild West was the last of a succession of frontiers formed as settlers moved gradually further west. The frontier was officially declared closed in 1890, and the Wild West disappeared.

See also wild horses won't drag someone to something, sow one's wild oats at sow2.