The term 'whig' originated as a 17th-century Scottish Gaelic insult, 'whiggamaire', for horse drivers and rustic Presbyterians who marched on Edinburgh. It was adopted by their political opponents in England as a derogatory label for those who opposed the succession of the Catholic James II. The faction defiantly embraced the name, and it evolved from a term for rebellious Scottish covenanters to denote the major parliamentary party advocating for constitutional monarchy and Protestant supremacy. Over centuries, its meaning shifted across the Atlantic, coming to symbolize first colonial revolutionaries and later a major US political party, demonstrating how a pejorative based on an occupation can transform into a central label of political identity.

The word 'whig' is a simplex word. It is a shortening of the Scottish term 'whiggamore', likely derived from 'whig' (a driver of horses) + 'more' (a variant of 'moor', meaning to go). Its origin is not from classical Latin or Greek roots but from a vernacular Scots term.