tailwind; fair wind; favorable wind
A wind blowing in the same direction as one's movement, making travel easier. Often used literally in weather, sailing, and cycling contexts.
With the tailwind today, cycling is easy.
The ship left the harbor with a fair wind.
favorable condition; advantageous situation
Figurative use: a situation or trend that works in one's favor, like a tailwind pushing one forward. Common in business, politics, and sports commentary.
Sales grew thanks to the tailwind of economic recovery.
His new work became a huge hit, helped by the tailwind of film awards.
Today there's a tailwind blowing, so I can ride my bike fast.
The industry grew, riding the tailwind of the economic boom.
The weak yen became a favorable factor for exporting companies.
The yacht picked up speed as it caught the tailwind.
Less common variant; learners should prefer 追い風.