tailwind

In a literal sense, this term is primarily used in aviation, sailing, and cycling to describe a wind that pushes a vehicle from behind. It is the direct opposite of a headwind, which creates resistance and slows progress.

In business and economic contexts, the term is used as a metaphor for external factors that accelerate growth or success. It describes a favorable environment—such as a sudden shift in consumer behavior or a new government policy—that makes it easier for an organization to achieve its goals without additional internal effort.