The compound "wild-goose" is a metaphorical extension based on the nature of the wild goose (Anser species). Wild geese are migratory birds known for their elusive and unpredictable flight patterns, making them notoriously difficult to hunt or capture. By the late 16th century, this characteristic was figuratively applied to any fruitless chase or erratic, confusing endeavor. The logic of the term lies in the comparison: pursuing a wild goose is as futile and bewildering as pursuing an aim that constantly shifts or leads nowhere. The hyphenated form "wild-goose" specifically functions as an attributive adjective to label such quixotic activities, as in "a wild-goose chase."

Structure: wild (untamed) + goose (waterfowl) - wild: From Old English wilde, meaning "in a natural state, untamed, undomesticated." Of Germanic origin. - goose: From Old English gōs, meaning the large waterfowl. Of Germanic origin.