tailwind

/ˈteɪlˌwɪnd/
noun
  1. A wind blowing in the same direction as the movement of a vehicle, aircraft, or person, making travel easier or faster.
    • The sailboat made excellent progress with a steady tailwind pushing it forward.
    • Cyclists love a tailwind because it helps them go faster with less effort.
    • The plane arrived early thanks to a strong tailwind.
  2. A factor or condition that helps progress or success.
    • New technology provided a tailwind for the startup's growth.
    • The company enjoyed a tailwind from increased consumer spending.
    • Low interest rates were a tailwind for the housing market.
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