Dangerously or extremely fast: he drove at breakneck speed
More example sentences
- Breathlessly we run faster and faster at a breakneck speed to a destination we neither know nor can ever reach.
- It's both breakneck fast and much funnier than you would think.
- The players had been aware that this could pose the biggest test to the top-of-the-table status and came out of the blocks at breakneck speed.
extremely fast, rapid, speedy, high-speed, lightning, whirlwind
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