expression
with great vigor; in leaps and bounds; like surging waves
Idiomatic phrase describing rapid, powerful progress or momentum, often used for growth, success, or unstoppable force. The literal image is of raging waves.
新製品は怒涛の勢いで売れている。
The new product is selling like hotcakes.
彼は怒涛の勢いで出世した。
He rose through the ranks with astonishing speed.
Compound of 怒涛 (raging waves) + の (possessive particle) + 勢い (force, momentum). The phrase evokes the unstoppable power of surging waves.